[bsp/at32] 1.fixed some errors and remove unused contents, 2.add support at32f423 series

bsp/at32/at32f423-start/.config

+#
+# Automatically generated file; DO NOT EDIT.
+# RT-Thread Configuration
+#
+
+#
+# RT-Thread Kernel
+#
+CONFIG_RT_NAME_MAX=8
+# CONFIG_RT_USING_ARCH_DATA_TYPE is not set
+# CONFIG_RT_USING_SMART is not set
+# CONFIG_RT_USING_SMP is not set
+CONFIG_RT_ALIGN_SIZE=8
+# CONFIG_RT_THREAD_PRIORITY_8 is not set
+CONFIG_RT_THREAD_PRIORITY_32=y
+# CONFIG_RT_THREAD_PRIORITY_256 is not set
+CONFIG_RT_THREAD_PRIORITY_MAX=32
+CONFIG_RT_TICK_PER_SECOND=1000
+CONFIG_RT_USING_OVERFLOW_CHECK=y
+CONFIG_RT_USING_HOOK=y
+CONFIG_RT_HOOK_USING_FUNC_PTR=y
+CONFIG_RT_USING_IDLE_HOOK=y
+CONFIG_RT_IDLE_HOOK_LIST_SIZE=4
+CONFIG_IDLE_THREAD_STACK_SIZE=256
+CONFIG_RT_USING_TIMER_SOFT=y
+CONFIG_RT_TIMER_THREAD_PRIO=4
+CONFIG_RT_TIMER_THREAD_STACK_SIZE=512
+
+#
+# kservice optimization
+#
+# CONFIG_RT_KSERVICE_USING_STDLIB is not set
+# CONFIG_RT_KSERVICE_USING_TINY_SIZE is not set
+# CONFIG_RT_USING_TINY_FFS is not set
+# CONFIG_RT_KPRINTF_USING_LONGLONG is not set
+CONFIG_RT_DEBUG=y
+CONFIG_RT_DEBUG_COLOR=y
+# CONFIG_RT_DEBUG_INIT_CONFIG is not set
+# CONFIG_RT_DEBUG_THREAD_CONFIG is not set
+# CONFIG_RT_DEBUG_SCHEDULER_CONFIG is not set
+# CONFIG_RT_DEBUG_IPC_CONFIG is not set
+# CONFIG_RT_DEBUG_TIMER_CONFIG is not set
+# CONFIG_RT_DEBUG_IRQ_CONFIG is not set
+# CONFIG_RT_DEBUG_MEM_CONFIG is not set
+# CONFIG_RT_DEBUG_SLAB_CONFIG is not set
+# CONFIG_RT_DEBUG_MEMHEAP_CONFIG is not set
+# CONFIG_RT_DEBUG_MODULE_CONFIG is not set
+
+#
+# Inter-Thread communication
+#
+CONFIG_RT_USING_SEMAPHORE=y
+CONFIG_RT_USING_MUTEX=y
+CONFIG_RT_USING_EVENT=y
+CONFIG_RT_USING_MAILBOX=y
+CONFIG_RT_USING_MESSAGEQUEUE=y
+# CONFIG_RT_USING_SIGNALS is not set
+
+#
+# Memory Management
+#
+CONFIG_RT_PAGE_MAX_ORDER=11
+CONFIG_RT_USING_MEMPOOL=y
+CONFIG_RT_USING_SMALL_MEM=y
+# CONFIG_RT_USING_SLAB is not set
+CONFIG_RT_USING_MEMHEAP=y
+CONFIG_RT_MEMHEAP_FAST_MODE=y
+# CONFIG_RT_MEMHEAP_BEST_MODE is not set
+CONFIG_RT_USING_SMALL_MEM_AS_HEAP=y
+# CONFIG_RT_USING_MEMHEAP_AS_HEAP is not set
+# CONFIG_RT_USING_SLAB_AS_HEAP is not set
+# CONFIG_RT_USING_USERHEAP is not set
+# CONFIG_RT_USING_NOHEAP is not set
+# CONFIG_RT_USING_MEMTRACE is not set
+# CONFIG_RT_USING_HEAP_ISR is not set
+CONFIG_RT_USING_HEAP=y
+
+#
+# Kernel Device Object
+#
+CONFIG_RT_USING_DEVICE=y
+# CONFIG_RT_USING_DEVICE_OPS is not set
+# CONFIG_RT_USING_DM is not set
+# CONFIG_RT_USING_INTERRUPT_INFO is not set
+CONFIG_RT_USING_CONSOLE=y
+CONFIG_RT_CONSOLEBUF_SIZE=128
+CONFIG_RT_CONSOLE_DEVICE_NAME="uart1"
+CONFIG_RT_VER_NUM=0x50001
+# CONFIG_RT_USING_STDC_ATOMIC is not set
+# CONFIG_RT_USING_CACHE is not set
+CONFIG_RT_USING_HW_ATOMIC=y
+# CONFIG_ARCH_ARM_BOOTWITH_FLUSH_CACHE is not set
+# CONFIG_ARCH_CPU_STACK_GROWS_UPWARD is not set
+CONFIG_RT_USING_CPU_FFS=y
+CONFIG_ARCH_ARM=y
+CONFIG_ARCH_ARM_CORTEX_M=y
+CONFIG_ARCH_ARM_CORTEX_M4=y
+
+#
+# RT-Thread Components
+#
+CONFIG_RT_USING_COMPONENTS_INIT=y
+CONFIG_RT_USING_USER_MAIN=y
+CONFIG_RT_MAIN_THREAD_STACK_SIZE=2048
+CONFIG_RT_MAIN_THREAD_PRIORITY=10
+# CONFIG_RT_USING_LEGACY is not set
+CONFIG_RT_USING_MSH=y
+CONFIG_RT_USING_FINSH=y
+CONFIG_FINSH_USING_MSH=y
+CONFIG_FINSH_THREAD_NAME="tshell"
+CONFIG_FINSH_THREAD_PRIORITY=20
+CONFIG_FINSH_THREAD_STACK_SIZE=4096
+CONFIG_FINSH_USING_HISTORY=y
+CONFIG_FINSH_HISTORY_LINES=5
+CONFIG_FINSH_USING_SYMTAB=y
+CONFIG_FINSH_CMD_SIZE=80
+CONFIG_MSH_USING_BUILT_IN_COMMANDS=y
+CONFIG_FINSH_USING_DESCRIPTION=y
+# CONFIG_FINSH_ECHO_DISABLE_DEFAULT is not set
+# CONFIG_FINSH_USING_AUTH is not set
+CONFIG_FINSH_ARG_MAX=10
+# CONFIG_RT_USING_DFS is not set
+# CONFIG_RT_USING_FAL is not set
+
+#
+# Device Drivers
+#
+CONFIG_RT_USING_DEVICE_IPC=y
+CONFIG_RT_UNAMED_PIPE_NUMBER=64
+# CONFIG_RT_USING_SYSTEM_WORKQUEUE is not set
+CONFIG_RT_USING_SERIAL=y
+CONFIG_RT_USING_SERIAL_V1=y
+# CONFIG_RT_USING_SERIAL_V2 is not set
+CONFIG_RT_SERIAL_USING_DMA=y
+CONFIG_RT_SERIAL_RB_BUFSZ=64
+# CONFIG_RT_USING_CAN is not set
+# CONFIG_RT_USING_HWTIMER is not set
+# CONFIG_RT_USING_CPUTIME is not set
+# CONFIG_RT_USING_I2C is not set
+# CONFIG_RT_USING_PHY is not set
+CONFIG_RT_USING_PIN=y
+# CONFIG_RT_USING_ADC is not set
+# CONFIG_RT_USING_DAC is not set
+# CONFIG_RT_USING_NULL is not set
+# CONFIG_RT_USING_ZERO is not set
+# CONFIG_RT_USING_RANDOM is not set
+# CONFIG_RT_USING_PWM is not set
+# CONFIG_RT_USING_MTD_NOR is not set
+# CONFIG_RT_USING_MTD_NAND is not set
+# CONFIG_RT_USING_PM is not set
+# CONFIG_RT_USING_FDT is not set
+# CONFIG_RT_USING_RTC is not set
+# CONFIG_RT_USING_SDIO is not set
+# CONFIG_RT_USING_SPI is not set
+# CONFIG_RT_USING_WDT is not set
+# CONFIG_RT_USING_AUDIO is not set
+# CONFIG_RT_USING_SENSOR is not set
+# CONFIG_RT_USING_TOUCH is not set
+# CONFIG_RT_USING_LCD is not set
+# CONFIG_RT_USING_HWCRYPTO is not set
+# CONFIG_RT_USING_PULSE_ENCODER is not set
+# CONFIG_RT_USING_INPUT_CAPTURE is not set
+# CONFIG_RT_USING_DEV_BUS is not set
+# CONFIG_RT_USING_WIFI is not set
+# CONFIG_RT_USING_VIRTIO is not set
+
+#
+# Using USB
+#
+# CONFIG_RT_USING_USB is not set
+# CONFIG_RT_USING_USB_HOST is not set
+# CONFIG_RT_USING_USB_DEVICE is not set
+
+#
+# C/C++ and POSIX layer
+#
+CONFIG_RT_LIBC_DEFAULT_TIMEZONE=8
+
+#
+# POSIX (Portable Operating System Interface) layer
+#
+# CONFIG_RT_USING_POSIX_FS is not set
+# CONFIG_RT_USING_POSIX_DELAY is not set
+# CONFIG_RT_USING_POSIX_CLOCK is not set
+# CONFIG_RT_USING_POSIX_TIMER is not set
+# CONFIG_RT_USING_PTHREADS is not set
+# CONFIG_RT_USING_MODULE is not set
+
+#
+# Interprocess Communication (IPC)
+#
+# CONFIG_RT_USING_POSIX_PIPE is not set
+# CONFIG_RT_USING_POSIX_MESSAGE_QUEUE is not set
+# CONFIG_RT_USING_POSIX_MESSAGE_SEMAPHORE is not set
+
+#
+# Socket is in the 'Network' category
+#
+# CONFIG_RT_USING_CPLUSPLUS is not set
+
+#
+# Network
+#
+# CONFIG_RT_USING_SAL is not set
+# CONFIG_RT_USING_NETDEV is not set
+# CONFIG_RT_USING_LWIP is not set
+# CONFIG_RT_USING_AT is not set
+
+#
+# Utilities
+#
+# CONFIG_RT_USING_RYM is not set
+# CONFIG_RT_USING_ULOG is not set
+# CONFIG_RT_USING_UTEST is not set
+# CONFIG_RT_USING_VAR_EXPORT is not set
+# CONFIG_RT_USING_ADT is not set
+# CONFIG_RT_USING_RT_LINK is not set
+# CONFIG_RT_USING_VBUS is not set
+
+#
+# RT-Thread Utestcases
+#
+# CONFIG_RT_USING_UTESTCASES is not set
+
+#
+# RT-Thread online packages
+#
+
+#
+# IoT - internet of things
+#
+# CONFIG_PKG_USING_PAHOMQTT is not set
+# CONFIG_PKG_USING_WEBCLIENT is not set
+# CONFIG_PKG_USING_WEBNET is not set
+# CONFIG_PKG_USING_MONGOOSE is not set
+# CONFIG_PKG_USING_MYMQTT is not set
+# CONFIG_PKG_USING_MQTTCLIENT is not set
+# CONFIG_PKG_USING_WEBTERMINAL is not set
+# CONFIG_PKG_USING_CJSON is not set
+# CONFIG_PKG_USING_JSMN is not set
+# CONFIG_PKG_USING_LIBMODBUS is not set
+# CONFIG_PKG_USING_FREEMODBUS is not set
+# CONFIG_PKG_USING_LJSON is not set
+# CONFIG_PKG_USING_EZXML is not set
+# CONFIG_PKG_USING_NANOPB is not set
+
+#
+# Wi-Fi
+#
+
+#
+# Marvell WiFi
+#
+# CONFIG_PKG_USING_WLANMARVELL is not set
+
+#
+# Wiced WiFi
+#
+# CONFIG_PKG_USING_WLAN_WICED is not set
+# CONFIG_PKG_USING_RW007 is not set
+# CONFIG_PKG_USING_COAP is not set
+# CONFIG_PKG_USING_NOPOLL is not set
+# CONFIG_PKG_USING_NETUTILS is not set
+# CONFIG_PKG_USING_PPP_DEVICE is not set
+# CONFIG_PKG_USING_AT_DEVICE is not set
+# CONFIG_PKG_USING_ATSRV_SOCKET is not set
+# CONFIG_PKG_USING_WIZNET is not set
+
+#
+# IoT Cloud
+#
+# CONFIG_PKG_USING_ONENET is not set
+# CONFIG_PKG_USING_GAGENT_CLOUD is not set
+# CONFIG_PKG_USING_ALI_IOTKIT is not set
+# CONFIG_PKG_USING_AZURE is not set
+# CONFIG_PKG_USING_TENCENT_IOTHUB is not set
+# CONFIG_PKG_USING_JIOT-C-SDK is not set
+# CONFIG_PKG_USING_UCLOUD_IOT_SDK is not set
+# CONFIG_PKG_USING_NIMBLE is not set
+# CONFIG_PKG_USING_OTA_DOWNLOADER is not set
+# CONFIG_PKG_USING_IPMSG is not set
+# CONFIG_PKG_USING_LSSDP is not set
+# CONFIG_PKG_USING_AIRKISS_OPEN is not set
+# CONFIG_PKG_USING_LIBRWS is not set
+# CONFIG_PKG_USING_TCPSERVER is not set
+# CONFIG_PKG_USING_PROTOBUF_C is not set
+# CONFIG_PKG_USING_ONNX_PARSER is not set
+# CONFIG_PKG_USING_ONNX_BACKEND is not set
+# CONFIG_PKG_USING_DLT645 is not set
+# CONFIG_PKG_USING_QXWZ is not set
+# CONFIG_PKG_USING_SMTP_CLIENT is not set
+# CONFIG_PKG_USING_ABUP_FOTA is not set
+# CONFIG_PKG_USING_LIBCURL2RTT is not set
+# CONFIG_PKG_USING_CAPNP is not set
+# CONFIG_PKG_USING_RT_CJSON_TOOLS is not set
+# CONFIG_PKG_USING_AGILE_TELNET is not set
+
+#
+# security packages
+#
+# CONFIG_PKG_USING_MBEDTLS is not set
+# CONFIG_PKG_USING_libsodium is not set
+# CONFIG_PKG_USING_TINYCRYPT is not set
+# CONFIG_PKG_USING_TFM is not set
+
+#
+# language packages
+#
+# CONFIG_PKG_USING_LUA is not set
+# CONFIG_PKG_USING_JERRYSCRIPT is not set
+# CONFIG_PKG_USING_MICROPYTHON is not set
+
+#
+# multimedia packages
+#
+# CONFIG_PKG_USING_OPENMV is not set
+# CONFIG_PKG_USING_MUPDF is not set
+# CONFIG_PKG_USING_STEMWIN is not set
+# CONFIG_PKG_USING_WAVPLAYER is not set
+# CONFIG_PKG_USING_TJPGD is not set
+
+#
+# tools packages
+#
+# CONFIG_PKG_USING_CMBACKTRACE is not set
+# CONFIG_PKG_USING_EASYFLASH is not set
+# CONFIG_PKG_USING_EASYLOGGER is not set
+# CONFIG_PKG_USING_SYSTEMVIEW is not set
+# CONFIG_PKG_USING_RDB is not set
+# CONFIG_PKG_USING_QRCODE is not set
+# CONFIG_PKG_USING_ULOG_EASYFLASH is not set
+# CONFIG_PKG_USING_ADBD is not set
+# CONFIG_PKG_USING_COREMARK is not set
+# CONFIG_PKG_USING_DHRYSTONE is not set
+# CONFIG_PKG_USING_NR_MICRO_SHELL is not set
+# CONFIG_PKG_USING_CHINESE_FONT_LIBRARY is not set
+# CONFIG_PKG_USING_LUNAR_CALENDAR is not set
+# CONFIG_PKG_USING_BS8116A is not set
+
+#
+# system packages
+#
+# CONFIG_PKG_USING_GUIENGINE is not set
+# CONFIG_PKG_USING_PERSIMMON is not set
+# CONFIG_PKG_USING_CAIRO is not set
+# CONFIG_PKG_USING_PIXMAN is not set
+# CONFIG_PKG_USING_LWEXT4 is not set
+# CONFIG_PKG_USING_PARTITION is not set
+# CONFIG_PKG_USING_FAL is not set
+# CONFIG_PKG_USING_SQLITE is not set
+# CONFIG_PKG_USING_RTI is not set
+# CONFIG_PKG_USING_LITTLEVGL2RTT is not set
+# CONFIG_PKG_USING_CMSIS is not set
+# CONFIG_PKG_USING_DFS_YAFFS is not set
+# CONFIG_PKG_USING_LITTLEFS is not set
+# CONFIG_PKG_USING_THREAD_POOL is not set
+# CONFIG_PKG_USING_ROBOTS is not set
+# CONFIG_PKG_USING_EV is not set
+# CONFIG_PKG_USING_SYSWATCH is not set
+
+#
+# peripheral libraries and drivers
+#
+# CONFIG_PKG_USING_SENSORS_DRIVERS is not set
+# CONFIG_PKG_USING_REALTEK_AMEBA is not set
+# CONFIG_PKG_USING_SHT2X is not set
+# CONFIG_PKG_USING_SHT3X is not set
+# CONFIG_PKG_USING_STM32_SDIO is not set
+# CONFIG_PKG_USING_ICM20608 is not set
+# CONFIG_PKG_USING_U8G2 is not set
+# CONFIG_PKG_USING_BUTTON is not set
+# CONFIG_PKG_USING_PCF8574 is not set
+# CONFIG_PKG_USING_SX12XX is not set
+# CONFIG_PKG_USING_SIGNAL_LED is not set
+# CONFIG_PKG_USING_LEDBLINK is not set
+# CONFIG_PKG_USING_LITTLED is not set
+# CONFIG_PKG_USING_WM_LIBRARIES is not set
+# CONFIG_PKG_USING_KENDRYTE_SDK is not set
+# CONFIG_PKG_USING_INFRARED is not set
+# CONFIG_PKG_USING_ROSSERIAL is not set
+# CONFIG_PKG_USING_AGILE_BUTTON is not set
+# CONFIG_PKG_USING_AGILE_LED is not set
+# CONFIG_PKG_USING_AT24CXX is not set
+# CONFIG_PKG_USING_MOTIONDRIVER2RTT is not set
+# CONFIG_PKG_USING_AD7746 is not set
+# CONFIG_PKG_USING_PCA9685 is not set
+# CONFIG_PKG_USING_I2C_TOOLS is not set
+# CONFIG_PKG_USING_NRF24L01 is not set
+# CONFIG_PKG_USING_TOUCH_DRIVERS is not set
+# CONFIG_PKG_USING_MAX17048 is not set
+# CONFIG_PKG_USING_RPLIDAR is not set
+# CONFIG_PKG_USING_AS608 is not set
+# CONFIG_PKG_USING_RC522 is not set
+# CONFIG_PKG_USING_EMBARC_BSP is not set
+
+#
+# miscellaneous packages
+#
+# CONFIG_PKG_USING_LIBCSV is not set
+# CONFIG_PKG_USING_OPTPARSE is not set
+# CONFIG_PKG_USING_FASTLZ is not set
+# CONFIG_PKG_USING_MINILZO is not set
+# CONFIG_PKG_USING_QUICKLZ is not set
+# CONFIG_PKG_USING_MULTIBUTTON is not set
+# CONFIG_PKG_USING_FLEXIBLE_BUTTON is not set
+# CONFIG_PKG_USING_CANFESTIVAL is not set
+# CONFIG_PKG_USING_ZLIB is not set
+# CONFIG_PKG_USING_DSTR is not set
+# CONFIG_PKG_USING_TINYFRAME is not set
+# CONFIG_PKG_USING_KENDRYTE_DEMO is not set
+# CONFIG_PKG_USING_DIGITALCTRL is not set
+# CONFIG_PKG_USING_UPACKER is not set
+# CONFIG_PKG_USING_UPARAM is not set
+
+#
+# samples: kernel and components samples
+#
+# CONFIG_PKG_USING_KERNEL_SAMPLES is not set
+# CONFIG_PKG_USING_FILESYSTEM_SAMPLES is not set
+# CONFIG_PKG_USING_NETWORK_SAMPLES is not set
+# CONFIG_PKG_USING_PERIPHERAL_SAMPLES is not set
+# CONFIG_PKG_USING_HELLO is not set
+# CONFIG_PKG_USING_VI is not set
+# CONFIG_PKG_USING_NNOM is not set
+# CONFIG_PKG_USING_LIBANN is not set
+# CONFIG_PKG_USING_ELAPACK is not set
+# CONFIG_PKG_USING_ARMv7M_DWT is not set
+# CONFIG_PKG_USING_VT100 is not set
+# CONFIG_PKG_USING_ULAPACK is not set
+# CONFIG_PKG_USING_UKAL is not set
+CONFIG_SOC_FAMILY_AT32=y
+CONFIG_SOC_SERIES_AT32F423=y
+
+#
+# Hardware Drivers Config
+#
+CONFIG_SOC_AT32F423VCT7=y
+
+#
+# Onboard Peripheral Drivers
+#
+CONFIG_BSP_USING_SERIAL=y
+
+#
+# On-chip Peripheral Drivers
+#
+CONFIG_BSP_USING_GPIO=y
+# CONFIG_BSP_USING_ON_CHIP_FLASH is not set
+# CONFIG_BSP_USING_USBFS is not set
+# CONFIG_BSP_USING_RTC is not set
+CONFIG_BSP_USING_UART=y
+CONFIG_BSP_USING_UART1=y
+# CONFIG_BSP_UART1_RX_USING_DMA is not set
+# CONFIG_BSP_USING_UART2 is not set
+# CONFIG_BSP_USING_UART3 is not set
+# CONFIG_BSP_USING_PWM is not set
+# CONFIG_BSP_USING_HWTIMER is not set
+# CONFIG_BSP_USING_SPI is not set
+# CONFIG_BSP_USING_I2C is not set
+# CONFIG_BSP_USING_ADC is not set
+# CONFIG_BSP_USING_CAN is not set

bsp/at32/at32f423-start/Kconfig

+mainmenu "RT-Thread Configuration"
+
+config BSP_DIR
+    string
+    option env="BSP_ROOT"
+    default "."
+
+config RTT_DIR
+    string
+    option env="RTT_ROOT"
+    default "../../.."
+
+config PKGS_DIR
+    string
+    option env="PKGS_ROOT"
+    default "packages"
+
+source "$RTT_DIR/Kconfig"
+source "$PKGS_DIR/Kconfig"
+source "../libraries/Kconfig"
+source "board/Kconfig"

bsp/at32/at32f423-start/README.md

+# AT32F423 AT-START 开发板 BSP 说明
+
+## 简介
+
+AT32F423 AT-START是雅特力推出的一款AT32F423系列的评估板，其搭载的MCU主要资源参数如下：
+
+| 硬件      | 描述          |
+| --------- | ------------- |
+| 芯片型号  | AT32F423VCT7  |
+| CPU       | ARM Cortex M4 |
+| 主频      | 150M          |
+| 片内SRAM  | 256K          |
+| 片内FLASH | 48K           |
+
+## 编译说明
+
+AT32F423-START板级包支持MDK4﹑MDK5﹑IAR开发环境和GCC编译器，以下是具体版本信息：
+
+| IDE/编译器 | 已测试版本                   |
+| ---------- | ---------------------------- |
+| MDK4       | MDK4.74                      |
+| MDK5       | MDK531                       |
+| IAR        | IAR8.20                      |
+| GCC        | GCC 5.4.1 20160919 (release) |
+
+## 板载资源
+
+- MCU：AT32F423VCT7，主频 150MHz，256KB FLASH ，48KB RAM
+- 常用外设
+  - LED：3个，（红色PD13、黄色PD14、绿色PD15）
+  - 按键：1个，KEY_USER（兼具唤醒功能，PA0)
+- 常用接口：插针串口J8
+- 调试接口，板载的 AT-LINK SWD 下载
+
+## 外设支持
+
+本 BSP 目前对外设驱动的支持情况如下：
+
+| 驱动      | 支持情况 |            备注            |
+| --------- | -------- | :------------------------: |
+| UART      | 支持     | USART1/2/3                 |
+| GPIO      | 支持     | PA0...PF10                 |
+| IIC       | 支持     | GPIO模拟I2C                |
+| SPI       | 支持     | SPI1/2                     |
+| ADC       | 支持     | ADC1                       |
+| PWM       | 支持     | TMR1/2                     |
+| HWTIMER   | 支持     | TMR3                       |
+| CAN       | 支持     | CAN1/2                     |
+| WDT       | 支持     |                            |
+| RTC       | 支持     |                            |
+| FLASH     | 支持     |                            |
+| USB       | 支持     |                            |
+
+### IO在板级支持包中的映射情况
+
+| IO号 | 板级包中的定义 |
+| ---- | -------------- |
+| PD13 | LED2           |
+| PD14 | LED3           |
+| PD15 | LED4           |
+| PA9  | USART1_TX      |
+| PA10 | USART1_RX      |
+| PA2  | USART2_TX      |
+| PA3  | USART2_RX      |
+| PB10 | USART3_TX      |
+| PB11 | USART3_RX      |
+| PA4  | SPI1_NSS       |
+| PA5  | SPI1_SCK       |
+| PA6  | SPI1_MISO      |
+| PA7  | SPI1_MOSI      |
+| PB12 | SPI2_NSS       |
+| PB13 | SPI2_SCK       |
+| PB14 | SPI2_MISO      |
+| PB15 | SPI2_MOSI      |
+| PB6  | I2C1_SCL       |
+| PB7  | I2C1_SDA       |
+| PA8  | PWM_TMR1_CH1   |
+| PA11 | PWM_TMR1_CH4   |
+| PA0  | PWM_TMR2_CH1   |
+| PA1  | PWM_TMR2_CH2   |
+| PC0  | ADC1_IN10      |
+| PC1  | ADC1_IN11      |
+| PC2  | ADC1_IN12      |
+| PC3  | ADC1_IN13      |
+| PC4  | ADC1_IN14      |
+| PC5  | ADC1_IN15      |
+| PB8  | CAN1_RX        |
+| PB9  | CAN1_TX        |
+| PB5  | CAN2_RX        |
+| PB6  | CAN2_TX        |
+| PA11 | USB_DM         |
+| PA12 | USB_DP         |
+
+## 使用说明
+
+    本章节是为刚接触 RT-Thread 的新手准备的使用说明，遵循简单的步骤即可将 RT-Thread 操作系统运行在该开发板上，看到实验效果 。
+
+### 快速上手
+
+本 BSP 为开发者提供 MDK4、MDK5 和 IAR 工程，并且支持 GCC 开发环境。下面以 MDK5 开发环境为例，介绍如何将系统运行起来。
+
+#### 硬件连接
+
+使用数据线连接开发板到 PC，打开电源开关。
+
+#### 编译下载
+
+双击 project.uvprojx 文件，打开 MDK5 工程，编译并下载程序到开发板。
+
+> 工程默认配置使用AT-LINK SWD下载程序，在通过AT-LINK SWD连接开发板的基础上，点击下载按钮即可下载程序到开发板
+
+#### 运行结果
+
+下载程序成功之后，系统会自动运行，观察开发板上 LED 的运行效果，LED2/3/4 会周期性闪烁。
+
+连接开发板对应串口到 PC , 在终端工具里打开相应的串口（115200-8-1-N），复位设备后，在串口上可以看到 RT-Thread 的输出信息:
+
+```bash
+ \ | /
+- RT -     Thread Operating System
+ / | \     5.0.1 build Apr  7 2023 09:49:38
+ 2006 - 2022 Copyright by RT-Thread team
+msh >
+```
+
+## 注意事项
+
+可在雅特力官方网站进行所需资料下载，如Keil_v5/Keil_v4/IAR等pack安装包和AT-START开发板原理图等（www.arterytek.com）
+
+## 联系人信息
+
+维护人:
+
+- [sheltonyu]
\ No newline at end of file

bsp/at32/at32f423-start/SConscript

+# for module compiling
+import os
+Import('RTT_ROOT')
+
+cwd = str(Dir('#'))
+objs = []
+list = os.listdir(cwd)
+
+for d in list:
+    path = os.path.join(cwd, d)
+    if os.path.isfile(os.path.join(path, 'SConscript')):
+        objs = objs + SConscript(os.path.join(d, 'SConscript'))
+
+Return('objs')

bsp/at32/at32f423-start/SConstruct

+import os
+import sys
+import rtconfig
+
+if os.getenv('RTT_ROOT'):
+    RTT_ROOT = os.getenv('RTT_ROOT')
+else:
+    RTT_ROOT = os.path.normpath(os.getcwd() + '/../../..')
+
+sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
+try:
+    from building import *
+except:
+    print('Cannot found RT-Thread root directory, please check RTT_ROOT')
+    print(RTT_ROOT)
+    exit(-1)
+
+TARGET = 'rtthread.' + rtconfig.TARGET_EXT
+
+DefaultEnvironment(tools=[])
+env = Environment(tools = ['mingw'],
+    AS = rtconfig.AS, ASFLAGS = rtconfig.AFLAGS,
+    CC = rtconfig.CC, CFLAGS = rtconfig.CFLAGS,
+    AR = rtconfig.AR, ARFLAGS = '-rc',
+    LINK = rtconfig.LINK, LINKFLAGS = rtconfig.LFLAGS)
+env.PrependENVPath('PATH', rtconfig.EXEC_PATH)
+
+if rtconfig.PLATFORM in ['iccarm']:
+    env.Replace(CCCOM = ['$CC $CFLAGS $CPPFLAGS $_CPPDEFFLAGS $_CPPINCFLAGS -o $TARGET $SOURCES'])
+    env.Replace(ARFLAGS = [''])
+    env.Replace(LINKCOM = env["LINKCOM"] + ' --map project.map')
+
+Export('RTT_ROOT')
+Export('rtconfig')
+
+SDK_ROOT = os.path.abspath('./')
+
+if os.path.exists(SDK_ROOT + '/libraries'):
+    libraries_path_prefix = SDK_ROOT + '/libraries'
+else:
+    libraries_path_prefix = os.path.dirname(SDK_ROOT) + '/libraries'
+
+SDK_LIB = libraries_path_prefix
+Export('SDK_LIB')
+
+# prepare building environment
+objs = PrepareBuilding(env, RTT_ROOT, has_libcpu=False)
+
+at32_library = 'AT32F423_Firmware_Library'
+rtconfig.BSP_LIBRARY_TYPE = at32_library
+
+# include libraries
+objs.extend(SConscript(os.path.join(libraries_path_prefix, at32_library, 'SConscript')))
+
+# include usb libraries
+objs.extend(SConscript(os.path.join(libraries_path_prefix, 'usbfs_library', 'SConscript')))
+
+# include drivers
+objs.extend(SConscript(os.path.join(libraries_path_prefix, 'rt_drivers', 'SConscript')))
+
+# make a building
+DoBuilding(TARGET, objs)

bsp/at32/at32f423-start/applications/SConscript

+from building import *
+import os
+
+cwd = GetCurrentDir()
+src = Glob('*.c')
+CPPPATH = [cwd]
+
+group = DefineGroup('Applications', src, depend = [''], CPPPATH = CPPPATH)
+
+list = os.listdir(cwd)
+for item in list:
+    if os.path.isfile(os.path.join(cwd, item, 'SConscript')):
+        group = group + SConscript(os.path.join(item, 'SConscript'))
+
+Return('group')

bsp/at32/at32f423-start/applications/main.c

+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2023-04-08     shelton      first version
+ */
+
+#include <rtthread.h>
+#include <rtdevice.h>
+#include "drv_common.h"
+#include "drv_gpio.h"
+
+/* defined the led2 pin: pd13 */
+#define LED2_PIN    GET_PIN(D, 13)
+/* defined the led3 pin: pd14 */
+#define LED3_PIN    GET_PIN(D, 14)
+/* defined the led4 pin: pd15 */
+#define LED4_PIN    GET_PIN(D, 15)
+
+int main(void)
+{
+    rt_uint32_t speed = 200;
+    /* set led2 pin mode to output */
+    rt_pin_mode(LED2_PIN, PIN_MODE_OUTPUT);
+    /* set led3 pin mode to output */
+    rt_pin_mode(LED3_PIN, PIN_MODE_OUTPUT);
+    /* set led4 pin mode to output */
+    rt_pin_mode(LED4_PIN, PIN_MODE_OUTPUT);
+
+    while (1)
+    {
+        rt_pin_write(LED2_PIN, PIN_LOW);
+        rt_thread_mdelay(speed);
+        rt_pin_write(LED3_PIN, PIN_LOW);
+        rt_thread_mdelay(speed);
+        rt_pin_write(LED4_PIN, PIN_LOW);
+        rt_thread_mdelay(speed);
+        rt_pin_write(LED2_PIN, PIN_HIGH);
+        rt_thread_mdelay(speed);
+        rt_pin_write(LED3_PIN, PIN_HIGH);
+        rt_thread_mdelay(speed);
+        rt_pin_write(LED4_PIN, PIN_HIGH);
+        rt_thread_mdelay(speed);
+    }
+}

bsp/at32/at32f423-start/board/Kconfig

+menu "Hardware Drivers Config"
+
+config SOC_AT32F423VCT7
+    bool
+    select SOC_SERIES_AT32F423
+    select RT_USING_COMPONENTS_INIT
+    select RT_USING_USER_MAIN
+    default y
+
+menu "Onboard Peripheral Drivers"
+
+    config BSP_USING_SERIAL
+        bool "Enable USART (uart1)"
+        select BSP_USING_UART
+        select BSP_USING_UART1
+        default y
+
+endmenu
+
+menu "On-chip Peripheral Drivers"
+
+    config BSP_USING_GPIO
+        bool "Enable GPIO"
+        select RT_USING_PIN
+        default y
+
+    config BSP_USING_ON_CHIP_FLASH
+        bool "Enable on-chip FLASH"
+        default n
+
+    menuconfig BSP_USING_USBFS
+        bool "Enable USB BUS"
+        default n
+        if BSP_USING_USBFS
+            menuconfig BSP_USING_USBFS1
+                bool "Enable USB BUS1"
+                default n
+                if BSP_USING_USBFS1
+                    config BSP_USING_DEVICE_USBFS1
+                        bool "Enable USB1 Deivce"
+                        select RT_USING_USB_DEVICE
+                        default n
+
+                    config BSP_USING_HOST_USBFS1
+                        bool "Enable USB1 Host"
+                        select RT_USING_USB_HOST
+                        default n
+                endif
+        endif
+
+    menuconfig BSP_USING_RTC
+        bool "Enable RTC"
+        select RT_USING_RTC
+        default n
+        if BSP_USING_RTC
+            choice
+                prompt "Select clock source"
+                default BSP_RTC_USING_LEXT
+
+                config BSP_RTC_USING_LEXT
+                    bool "RTC USING LEXT"
+
+                config BSP_RTC_USING_LICK
+                    bool "RTC USING LICK"
+            endchoice
+        endif
+
+    menuconfig BSP_USING_UART
+        bool "Enable UART"
+        default y
+        select RT_USING_SERIAL
+        if BSP_USING_UART
+            config BSP_USING_UART1
+                bool "Enable UART1"
+                default y
+
+            config BSP_UART1_RX_USING_DMA
+                bool "Enable UART1 RX DMA"
+                depends on BSP_USING_UART1 && RT_SERIAL_USING_DMA
+                default n
+
+            config BSP_USING_UART2
+                bool "Enable UART2"
+                default n
+
+            config BSP_UART2_RX_USING_DMA
+                bool "Enable UART2 RX DMA"
+                depends on BSP_USING_UART2 && RT_SERIAL_USING_DMA
+                default n
+
+            config BSP_USING_UART3
+                bool "Enable UART3"
+                default n
+
+            config BSP_UART3_RX_USING_DMA
+                bool "Enable UART3 RX DMA"
+                depends on BSP_USING_UART3 && RT_SERIAL_USING_DMA
+                default n
+        endif
+
+    menuconfig BSP_USING_PWM
+        bool "Enable PWM"
+        default n
+        select RT_USING_PWM
+        if BSP_USING_PWM
+        menuconfig BSP_USING_PWM1
+            bool "Enable timer1 output pwm"
+            default n
+            if BSP_USING_PWM1
+                config BSP_USING_PWM1_CH1
+                    bool "Enable PWM1 channel1"
+                    default n
+
+                config BSP_USING_PWM1_CH4
+                    bool "Enable PWM1 channel4"
+                    default n
+            endif
+        menuconfig BSP_USING_PWM2
+            bool "Enable timer2 output pwm"
+            default n
+            if BSP_USING_PWM2
+                config BSP_USING_PWM2_CH1
+                    bool "Enable PWM2 channel1"
+                    default n
+
+                config BSP_USING_PWM2_CH2
+                    bool "Enable PWM2 channel2"
+                    default n
+            endif
+        endif
+
+    menuconfig BSP_USING_HWTIMER
+        bool "Enable HWTIMER"
+        default n
+        select RT_USING_HWTIMER
+        if BSP_USING_HWTIMER
+        config BSP_USING_HWTMR3
+            bool "Enable hardware timer3"
+            default n
+        endif
+
+    menuconfig BSP_USING_SPI
+        bool "Enable SPI BUS"
+        default n
+        select RT_USING_SPI
+        if BSP_USING_SPI
+            config BSP_USING_SPI1
+                bool "Enable SPI1 BUS"
+                default n
+
+            config BSP_SPI1_TX_USING_DMA
+                bool "Enable SPI1 TX DMA"
+                depends on BSP_USING_SPI1
+                default n
+
+            config BSP_SPI1_RX_USING_DMA
+                bool "Enable SPI1 RX DMA"
+                depends on BSP_USING_SPI1
+                select BSP_SPI1_TX_USING_DMA
+                default n
+
+            config BSP_USING_SPI2
+                bool "Enable SPI2 BUS"
+                default n
+
+            config BSP_SPI2_TX_USING_DMA
+                bool "Enable SPI2 TX DMA"
+                depends on BSP_USING_SPI2
+                default n
+
+            config BSP_SPI2_RX_USING_DMA
+                bool "Enable SPI2 RX DMA"
+                depends on BSP_USING_SPI2
+                select BSP_SPI2_TX_USING_DMA
+                default n
+
+            config BSP_USING_SPI3
+                bool "Enable SPI3 BUS"
+                default n
+
+            config BSP_SPI3_TX_USING_DMA
+                bool "Enable SPI3 TX DMA"
+                depends on BSP_USING_SPI3
+                default n
+
+            config BSP_SPI3_RX_USING_DMA
+                bool "Enable SPI3 RX DMA"
+                depends on BSP_USING_SPI3
+                select BSP_SPI3_TX_USING_DMA
+                default n
+        endif
+
+    menuconfig BSP_USING_I2C
+        bool "Enable I2C BUS (software simulation)"
+        default n
+        select RT_USING_I2C
+        select RT_USING_I2C_BITOPS
+        select RT_USING_PIN
+        if BSP_USING_I2C
+            config BSP_USING_I2C1
+                bool "Enable I2C1 BUS"
+                if BSP_USING_I2C1
+                    config BSP_I2C1_SCL_PIN
+                        int "i2c1 scl pin number"
+                        range 0 63
+                        default 22
+                    config BSP_I2C1_SDA_PIN
+                        int "I2C1 sda pin number"
+                        range 0 63
+                        default 23
+                endif
+            config BSP_USING_I2C2
+                bool "Enable I2C2 BUS"
+                if BSP_USING_I2C2
+                    config BSP_I2C2_SCL_PIN
+                        int "i2c2 scl pin number"
+                        range 0 63
+                        default 26
+                    config BSP_I2C2_SDA_PIN
+                        int "I2C2 sda pin number"
+                        range 0 63
+                        default 27
+                endif
+        endif
+
+    menuconfig BSP_USING_ADC
+        bool "Enable ADC"
+        default n
+        select RT_USING_ADC
+        if BSP_USING_ADC
+            config BSP_USING_ADC1
+                bool "Enable ADC1"
+                default n
+        endif
+
+    menuconfig BSP_USING_CAN
+        bool "Enable CAN"
+        default n
+        select RT_USING_CAN
+        if BSP_USING_CAN
+            config BSP_USING_CAN1
+                bool "using CAN1"
+                default n
+            config BSP_USING_CAN2
+                bool "using CAN2"
+                default n
+        endif
+endmenu
+
+endmenu

bsp/at32/at32f423-start/board/SConscript

+import os
+import rtconfig
+from building import *
+
+Import('SDK_LIB')
+
+cwd = GetCurrentDir()
+
+# add general drivers
+src = Split('''
+src/board.c
+src/at32_msp.c
+''')
+
+path = [cwd]
+path += [cwd + '/inc']
+
+startup_path_prefix = SDK_LIB
+
+if rtconfig.PLATFORM in ['gcc']:
+    src += [startup_path_prefix + '/AT32F423_Firmware_Library/cmsis/cm4/device_support/startup/gcc/startup_at32f423.s']
+elif rtconfig.PLATFORM in ['armcc', 'armclang']:
+    src += [startup_path_prefix + '/AT32F423_Firmware_Library/cmsis/cm4/device_support/startup/mdk/startup_at32f423.s']
+elif rtconfig.PLATFORM in ['iccarm']:
+    src += [startup_path_prefix + '/AT32F423_Firmware_Library/cmsis/cm4/device_support/startup/iar/startup_at32f423.s']
+
+CPPDEFINES = ['AT32F423VCT7']
+group = DefineGroup('Drivers', src, depend = [''], CPPPATH = path, CPPDEFINES = CPPDEFINES)
+Return('group')

bsp/at32/at32f423-start/board/inc/at32_msp.h

+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2023-04-08     shelton      first version
+ */
+
+#ifndef __AT32_MSP_H__
+#define __AT32_MSP_H__
+
+void at32_msp_usart_init(void *instance);
+void at32_msp_spi_init(void *instance);
+void at32_msp_tmr_init(void *instance);
+void at32_msp_adc_init(void *instance);
+void at32_msp_hwtmr_init(void *instance);
+void at32_msp_can_init(void *instance);
+void at32_msp_usb_init(void *instance);
+
+#endif /* __AT32_MSP_H__ */

bsp/at32/at32f423-start/board/inc/at32f423_conf.h

+/**
+  **************************************************************************
+  * @file     at32f423_conf.h
+  * @brief    at32f423 config header file
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to
+  * download from Artery official website is the copyrighted work of Artery.
+  * Artery authorizes customers to use, copy, and distribute the BSP
+  * software and its related documentation for the purpose of design and
+  * development in conjunction with Artery microcontrollers. Use of the
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+/* define to prevent recursive inclusion -------------------------------------*/
+#ifndef __AT32F423_CONF_H
+#define __AT32F423_CONF_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+  * @brief in the following line adjust the value of high speed exernal crystal (hext)
+  * used in your application
+  *
+  * tip: to avoid modifying this file each time you need to use different hext, you
+  *      can define the hext value in your toolchain compiler preprocessor.
+  *
+  */
+#if !defined  HEXT_VALUE
+#define HEXT_VALUE                       ((uint32_t)8000000) /*!< value of the high speed exernal crystal in hz */
+#endif
+
+/**
+  * @brief in the following line adjust the high speed exernal crystal (hext) startup
+  * timeout value
+  */
+#define HEXT_STARTUP_TIMEOUT             ((uint16_t)0x3000)  /*!< time out for hext start up */
+#define HICK_VALUE                       ((uint32_t)8000000) /*!< value of the high speed internal clock in hz */
+#define LEXT_VALUE                       ((uint32_t)32768)   /*!< value of the low speed exernal clock in hz */
+
+/* module define -------------------------------------------------------------*/
+#define CRM_MODULE_ENABLED
+#define TMR_MODULE_ENABLED
+#define ERTC_MODULE_ENABLED
+#define GPIO_MODULE_ENABLED
+#define I2C_MODULE_ENABLED
+#define USART_MODULE_ENABLED
+#define PWC_MODULE_ENABLED
+#define CAN_MODULE_ENABLED
+#define ADC_MODULE_ENABLED
+#define DAC_MODULE_ENABLED
+#define SPI_MODULE_ENABLED
+#define DMA_MODULE_ENABLED
+#define DEBUG_MODULE_ENABLED
+#define FLASH_MODULE_ENABLED
+#define CRC_MODULE_ENABLED
+#define WWDT_MODULE_ENABLED
+#define WDT_MODULE_ENABLED
+#define EXINT_MODULE_ENABLED
+#define XMC_MODULE_ENABLED
+#define USB_MODULE_ENABLED
+#define ACC_MODULE_ENABLED
+#define MISC_MODULE_ENABLED
+#define SCFG_MODULE_ENABLED
+
+/* includes ------------------------------------------------------------------*/
+#ifdef CRM_MODULE_ENABLED
+#include "at32f423_crm.h"
+#endif
+#ifdef TMR_MODULE_ENABLED
+#include "at32f423_tmr.h"
+#endif
+#ifdef ERTC_MODULE_ENABLED
+#include "at32f423_ertc.h"
+#endif
+#ifdef GPIO_MODULE_ENABLED
+#include "at32f423_gpio.h"
+#endif
+#ifdef I2C_MODULE_ENABLED
+#include "at32f423_i2c.h"
+#endif
+#ifdef USART_MODULE_ENABLED
+#include "at32f423_usart.h"
+#endif
+#ifdef PWC_MODULE_ENABLED
+#include "at32f423_pwc.h"
+#endif
+#ifdef CAN_MODULE_ENABLED
+#include "at32f423_can.h"
+#endif
+#ifdef ADC_MODULE_ENABLED
+#include "at32f423_adc.h"
+#endif
+#ifdef DAC_MODULE_ENABLED
+#include "at32f423_dac.h"
+#endif
+#ifdef SPI_MODULE_ENABLED
+#include "at32f423_spi.h"
+#endif
+#ifdef DMA_MODULE_ENABLED
+#include "at32f423_dma.h"
+#endif
+#ifdef DEBUG_MODULE_ENABLED
+#include "at32f423_debug.h"
+#endif
+#ifdef FLASH_MODULE_ENABLED
+#include "at32f423_flash.h"
+#endif
+#ifdef CRC_MODULE_ENABLED
+#include "at32f423_crc.h"
+#endif
+#ifdef WWDT_MODULE_ENABLED
+#include "at32f423_wwdt.h"
+#endif
+#ifdef WDT_MODULE_ENABLED
+#include "at32f423_wdt.h"
+#endif
+#ifdef EXINT_MODULE_ENABLED
+#include "at32f423_exint.h"
+#endif
+#ifdef XMC_MODULE_ENABLED
+#include "at32f423_xmc.h"
+#endif
+#ifdef ACC_MODULE_ENABLED
+#include "at32f423_acc.h"
+#endif
+#ifdef MISC_MODULE_ENABLED
+#include "at32f423_misc.h"
+#endif
+#ifdef SCFG_MODULE_ENABLED
+#include "at32f423_scfg.h"
+#endif
+#ifdef USB_MODULE_ENABLED
+#include "at32f423_usb.h"
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

bsp/at32/at32f423-start/board/inc/board.h

+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2023-04-08     shelton      first version
+ */
+
+#ifndef __BOARD_H__
+#define __BOARD_H__
+
+#include <rtthread.h>
+#include "at32f423.h"
+#include "at32_msp.h"
+#include "drv_common.h"
+#include "drv_gpio.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define AT32_FLASH_START_ADRESS         ((uint32_t)0x08000000)
+#define FLASH_PAGE_SIZE                 (2 * 1024)
+#define AT32_FLASH_SIZE                 (256 * 1024)
+#define AT32_FLASH_END_ADDRESS          ((uint32_t)(AT32_FLASH_START_ADRESS + AT32_FLASH_SIZE))
+
+/* internal sram memory size[kbytes] <48>, default: 48*/
+#define AT32_SRAM_SIZE                  48
+#define AT32_SRAM_END                   (0x20000000 + AT32_SRAM_SIZE * 1024)
+
+#if defined(__ARMCC_VERSION)
+extern int Image$$RW_IRAM1$$ZI$$Limit;
+#define HEAP_BEGIN                      ((void *)&Image$$RW_IRAM1$$ZI$$Limit)
+#elif __ICCARM__
+#pragma section="CSTACK"
+#define HEAP_BEGIN                      (__segment_end("CSTACK"))
+#else
+extern int __bss_end;
+#define HEAP_BEGIN                      ((void *)&__bss_end)
+#endif
+
+#define HEAP_END                        AT32_SRAM_END
+
+void system_clock_config(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __BOARD_H__ */

bsp/at32/at32f423-start/board/linker_scripts/link.icf

+/*###ICF### Section handled by ICF editor, don't touch! ****/
+/*-Editor annotation file-*/
+/* IcfEditorFile="$TOOLKIT_DIR$\config\ide\IcfEditor\cortex_v1_0.xml" */
+/*-Specials-*/
+define symbol __ICFEDIT_intvec_start__ = 0x08000000;
+/*-Memory Regions-*/
+define symbol __ICFEDIT_region_ROM_start__ = 0x08000000;
+define symbol __ICFEDIT_region_ROM_end__   = 0x0803FFFF;
+define symbol __ICFEDIT_region_RAM_start__ = 0x20000000;
+define symbol __ICFEDIT_region_RAM_end__   = 0x2000BFFF;
+/*-Sizes-*/
+define symbol __ICFEDIT_size_cstack__ = 0x0400;
+define symbol __ICFEDIT_size_heap__   = 0x0000;
+/**** End of ICF editor section. ###ICF###*/
+
+define memory mem with size = 4G;
+define region ROM_region      = mem:[from __ICFEDIT_region_ROM_start__   to __ICFEDIT_region_ROM_end__];
+define region RAM_region      = mem:[from __ICFEDIT_region_RAM_start__   to __ICFEDIT_region_RAM_end__];
+
+define block CSTACK    with alignment = 8, size = __ICFEDIT_size_cstack__   { };
+
+initialize by copy { readwrite };
+do not initialize  { section .noinit };
+
+place at address mem:__ICFEDIT_intvec_start__ { readonly section .intvec };
+
+place in ROM_region   { readonly };
+place in RAM_region   { readwrite, last block CSTACK};

bsp/at32/at32f423-start/board/linker_scripts/link.lds

+/*
+ * linker script for AT32 with GNU ld
+ */
+
+/* Program Entry, set to mark it as "used" and avoid gc */
+MEMORY
+{
+    ROM (rx) : ORIGIN = 0x08000000, LENGTH = 256k /* 256KB flash */
+    RAM (rw) : ORIGIN = 0x20000000, LENGTH = 48k  /* 48K sram */
+}
+ENTRY(Reset_Handler)
+_system_stack_size = 0x200;
+
+SECTIONS
+{
+    .text :
+    {
+        . = ALIGN(4);
+        _stext = .;
+        KEEP(*(.isr_vector))            /* Startup code */
+
+        . = ALIGN(4);
+        *(.text)                        /* remaining code */
+        *(.text.*)                      /* remaining code */
+        *(.rodata)                      /* read-only data (constants) */
+        *(.rodata*)
+        *(.glue_7)
+        *(.glue_7t)
+        *(.gnu.linkonce.t*)
+
+        /* section information for finsh shell */
+        . = ALIGN(4);
+        __fsymtab_start = .;
+        KEEP(*(FSymTab))
+        __fsymtab_end = .;
+
+        . = ALIGN(4);
+        __vsymtab_start = .;
+        KEEP(*(VSymTab))
+        __vsymtab_end = .;
+
+        /* section information for initial. */
+        . = ALIGN(4);
+        __rt_init_start = .;
+        KEEP(*(SORT(.rti_fn*)))
+        __rt_init_end = .;
+
+        . = ALIGN(4);
+
+        PROVIDE(__ctors_start__ = .);
+        KEEP (*(SORT(.init_array.*)))
+        KEEP (*(.init_array))
+        PROVIDE(__ctors_end__ = .);
+
+        . = ALIGN(4);
+
+        _etext = .;
+    } > ROM = 0
+
+    /* .ARM.exidx is sorted, so has to go in its own output section.  */
+    __exidx_start = .;
+    .ARM.exidx :
+    {
+        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+
+        /* This is used by the startup in order to initialize the .data secion */
+        _sidata = .;
+    } > ROM
+    __exidx_end = .;
+
+    /* .data section which is used for initialized data */
+
+    .data : AT (_sidata)
+    {
+        . = ALIGN(4);
+        /* This is used by the startup in order to initialize the .data secion */
+        _sdata = . ;
+
+        *(.data)
+        *(.data.*)
+        *(.gnu.linkonce.d*)
+
+        PROVIDE(__dtors_start__ = .);
+        KEEP(*(SORT(.dtors.*)))
+        KEEP(*(.dtors))
+        PROVIDE(__dtors_end__ = .);
+
+        . = ALIGN(4);
+        /* This is used by the startup in order to initialize the .data secion */
+        _edata = . ;
+    } >RAM
+
+    .stack :
+    {
+        . = ALIGN(4);
+        _sstack = .;
+        . = . + _system_stack_size;
+        . = ALIGN(4);
+        _estack = .;
+    } >RAM
+
+    __bss_start = .;
+    .bss :
+    {
+        . = ALIGN(4);
+        /* This is used by the startup in order to initialize the .bss secion */
+        _sbss = .;
+
+        *(.bss)
+        *(.bss.*)
+        *(COMMON)
+
+        . = ALIGN(4);
+        /* This is used by the startup in order to initialize the .bss secion */
+        _ebss = . ;
+
+        *(.bss.init)
+    } > RAM
+    __bss_end = .;
+
+    _end = .;
+
+    /* Stabs debugging sections.  */
+    .stab          0 : { *(.stab) }
+    .stabstr       0 : { *(.stabstr) }
+    .stab.excl     0 : { *(.stab.excl) }
+    .stab.exclstr  0 : { *(.stab.exclstr) }
+    .stab.index    0 : { *(.stab.index) }
+    .stab.indexstr 0 : { *(.stab.indexstr) }
+    .comment       0 : { *(.comment) }
+    /* DWARF debug sections.
+     * Symbols in the DWARF debugging sections are relative to the beginning
+     * of the section so we begin them at 0.  */
+    /* DWARF 1 */
+    .debug          0 : { *(.debug) }
+    .line           0 : { *(.line) }
+    /* GNU DWARF 1 extensions */
+    .debug_srcinfo  0 : { *(.debug_srcinfo) }
+    .debug_sfnames  0 : { *(.debug_sfnames) }
+    /* DWARF 1.1 and DWARF 2 */
+    .debug_aranges  0 : { *(.debug_aranges) }
+    .debug_pubnames 0 : { *(.debug_pubnames) }
+    /* DWARF 2 */
+    .debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }
+    .debug_abbrev   0 : { *(.debug_abbrev) }
+    .debug_line     0 : { *(.debug_line) }
+    .debug_frame    0 : { *(.debug_frame) }
+    .debug_str      0 : { *(.debug_str) }
+    .debug_loc      0 : { *(.debug_loc) }
+    .debug_macinfo  0 : { *(.debug_macinfo) }
+    /* SGI/MIPS DWARF 2 extensions */
+    .debug_weaknames 0 : { *(.debug_weaknames) }
+    .debug_funcnames 0 : { *(.debug_funcnames) }
+    .debug_typenames 0 : { *(.debug_typenames) }
+    .debug_varnames  0 : { *(.debug_varnames) }
+}

bsp/at32/at32f423-start/board/linker_scripts/link.sct

+; *************************************************************
+; *** Scatter-Loading Description File generated by uVision ***
+; *************************************************************
+
+LR_IROM1 0x08000000 0x00040000  {    ; load region size_region
+  ER_IROM1 0x08000000 0x00040000  {  ; load address = execution address
+   *.o (RESET, +First)
+   *(InRoot$$Sections)
+   .ANY (+RO)
+  }
+  RW_IRAM1 0x20000000 0x0000C000  {  ; RW data
+   .ANY (+RW +ZI)
+  }
+}
+

bsp/at32/at32f423-start/board/src/at32_msp.c

+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2023-04-08     shelton      first version
+ */
+
+#include <rtthread.h>
+#include "at32f423.h"
+#include "at32_msp.h"
+
+#ifdef BSP_USING_UART
+void at32_msp_usart_init(void *instance)
+{
+    gpio_init_type gpio_init_struct;
+    usart_type *usart_x = (usart_type *)instance;
+
+    gpio_default_para_init(&gpio_init_struct);
+    gpio_init_struct.gpio_drive_strength = GPIO_DRIVE_STRENGTH_STRONGER;
+#ifdef BSP_USING_UART1
+    if(USART1 == usart_x)
+    {
+        crm_periph_clock_enable(CRM_USART1_PERIPH_CLOCK, TRUE);
+        crm_periph_clock_enable(CRM_GPIOA_PERIPH_CLOCK, TRUE);
+
+        gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
+        gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;
+        gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
+        gpio_init_struct.gpio_pins = GPIO_PINS_9;
+        gpio_init(GPIOA, &gpio_init_struct);
+
+        gpio_init_struct.gpio_pins = GPIO_PINS_10;
+        gpio_init(GPIOA, &gpio_init_struct);
+
+        gpio_pin_mux_config(GPIOA, GPIO_PINS_SOURCE9, GPIO_MUX_7);
+        gpio_pin_mux_config(GPIOA, GPIO_PINS_SOURCE10, GPIO_MUX_7);
+    }
+#endif
+#ifdef BSP_USING_UART2
+    if(USART2 == usart_x)
+    {
+        crm_periph_clock_enable(CRM_USART2_PERIPH_CLOCK, TRUE);
+        crm_periph_clock_enable(CRM_GPIOA_PERIPH_CLOCK, TRUE);
+
+        gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
+        gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;
+        gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
+        gpio_init_struct.gpio_pins = GPIO_PINS_2;
+        gpio_init(GPIOA, &gpio_init_struct);
+
+        gpio_init_struct.gpio_pins = GPIO_PINS_3;
+        gpio_init(GPIOA, &gpio_init_struct);
+
+        gpio_pin_mux_config(GPIOA, GPIO_PINS_SOURCE2, GPIO_MUX_7);
+        gpio_pin_mux_config(GPIOA, GPIO_PINS_SOURCE3, GPIO_MUX_7);
+    }
+#endif
+#ifdef BSP_USING_UART3
+    if(USART3 == usart_x)
+    {
+        crm_periph_clock_enable(CRM_USART3_PERIPH_CLOCK, TRUE);
+        crm_periph_clock_enable(CRM_GPIOB_PERIPH_CLOCK, TRUE);
+
+        gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
+        gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;
+        gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
+        gpio_init_struct.gpio_pins = GPIO_PINS_10;
+        gpio_init(GPIOB, &gpio_init_struct);
+
+        gpio_init_struct.gpio_pins = GPIO_PINS_11;
+        gpio_init(GPIOB, &gpio_init_struct);
+
+        gpio_pin_mux_config(GPIOB, GPIO_PINS_SOURCE10, GPIO_MUX_7);
+        gpio_pin_mux_config(GPIOB, GPIO_PINS_SOURCE11, GPIO_MUX_7);
+    }
+#endif
+    /* add others */
+}
+#endif /* BSP_USING_SERIAL */
+
+#ifdef BSP_USING_SPI
+void at32_msp_spi_init(void *instance)
+{
+    gpio_init_type gpio_init_struct;
+    spi_type *spi_x = (spi_type *)instance;
+
+    gpio_default_para_init(&gpio_init_struct);
+    gpio_init_struct.gpio_drive_strength = GPIO_DRIVE_STRENGTH_STRONGER;
+#ifdef BSP_USING_SPI1
+    if(SPI1 == spi_x)
+    {
+        crm_periph_clock_enable(CRM_SPI1_PERIPH_CLOCK, TRUE);
+        crm_periph_clock_enable(CRM_GPIOA_PERIPH_CLOCK, TRUE);
+
+        gpio_init_struct.gpio_mode = GPIO_MODE_OUTPUT;
+        gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;
+        gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
+        gpio_init_struct.gpio_pins = GPIO_PINS_4;
+        gpio_init(GPIOA, &gpio_init_struct);
+
+        gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
+        gpio_init_struct.gpio_pins = GPIO_PINS_5 | GPIO_PINS_6 | GPIO_PINS_7;
+        gpio_init(GPIOA, &gpio_init_struct);
+
+        gpio_pin_mux_config(GPIOA, GPIO_PINS_SOURCE5, GPIO_MUX_5);
+        gpio_pin_mux_config(GPIOA, GPIO_PINS_SOURCE6, GPIO_MUX_5);
+        gpio_pin_mux_config(GPIOA, GPIO_PINS_SOURCE7, GPIO_MUX_5);
+    }
+#endif
+#ifdef BSP_USING_SPI2
+    if(SPI2 == spi_x)
+    {
+        crm_periph_clock_enable(CRM_SPI2_PERIPH_CLOCK, TRUE);
+        crm_periph_clock_enable(CRM_GPIOB_PERIPH_CLOCK, TRUE);
+
+        gpio_init_struct.gpio_mode = GPIO_MODE_OUTPUT;
+        gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;
+        gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
+        gpio_init_struct.gpio_pins = GPIO_PINS_12;
+        gpio_init(GPIOB, &gpio_init_struct);
+
+        gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
+        gpio_init_struct.gpio_pins = GPIO_PINS_13 | GPIO_PINS_14 | GPIO_PINS_15;
+        gpio_init(GPIOB, &gpio_init_struct);
+
+        gpio_pin_mux_config(GPIOB, GPIO_PINS_SOURCE13, GPIO_MUX_5);
+        gpio_pin_mux_config(GPIOB, GPIO_PINS_SOURCE14, GPIO_MUX_5);
+        gpio_pin_mux_config(GPIOB, GPIO_PINS_SOURCE15, GPIO_MUX_5);
+    }
+#endif
+    /* add others */
+}
+#endif /* BSP_USING_SPI */
+
+#ifdef BSP_USING_PWM
+void at32_msp_tmr_init(void *instance)
+{
+    gpio_init_type gpio_init_struct;
+    tmr_type *tmr_x = (tmr_type *)instance;
+
+    gpio_default_para_init(&gpio_init_struct);
+    gpio_init_struct.gpio_drive_strength = GPIO_DRIVE_STRENGTH_STRONGER;
+    if(tmr_x == TMR1)
+    {
+        /* tmr1 clock enable */
+        crm_periph_clock_enable(CRM_TMR1_PERIPH_CLOCK, TRUE);
+        /* gpioa clock enable */
+        crm_periph_clock_enable(CRM_GPIOA_PERIPH_CLOCK, TRUE);
+
+        /* gpioa configuration: tmr1 channel1 and channel4 as alternate function push-pull */
+        gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
+        gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;
+        gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
+        gpio_init_struct.gpio_pins = GPIO_PINS_8 | GPIO_PINS_11;
+        gpio_init(GPIOA, &gpio_init_struct);
+
+        gpio_pin_mux_config(GPIOA, GPIO_PINS_SOURCE8, GPIO_MUX_1);
+        gpio_pin_mux_config(GPIOA, GPIO_PINS_SOURCE11, GPIO_MUX_1);
+    }
+
+    if(tmr_x == TMR2)
+    {
+        /* tmr2 clock enable */
+        crm_periph_clock_enable(CRM_TMR2_PERIPH_CLOCK, TRUE);
+        /* gpioa clock enable */
+        crm_periph_clock_enable(CRM_GPIOA_PERIPH_CLOCK, TRUE);
+
+        /* gpioa configuration: tmr1 channel1 and channel2 as alternate function push-pull */
+        gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
+        gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;
+        gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
+        gpio_init_struct.gpio_pins = GPIO_PINS_0 | GPIO_PINS_1;
+        gpio_init(GPIOA, &gpio_init_struct);
+
+        gpio_pin_mux_config(GPIOA, GPIO_PINS_SOURCE0, GPIO_MUX_1);
+        gpio_pin_mux_config(GPIOA, GPIO_PINS_SOURCE1, GPIO_MUX_1);
+    }
+    /* add others */
+}
+#endif /* BSP_USING_PWM */
+
+#ifdef BSP_USING_ADC
+void at32_msp_adc_init(void *instance)
+{
+    gpio_init_type gpio_init_struct;
+    adc_type *adc_x = (adc_type *)instance;
+
+    gpio_default_para_init(&gpio_init_struct);
+    gpio_init_struct.gpio_drive_strength = GPIO_DRIVE_STRENGTH_STRONGER;
+#ifdef BSP_USING_ADC1
+    if(adc_x == ADC1)
+    {
+        /* adc1 & gpio clock enable */
+        crm_periph_clock_enable(CRM_ADC1_PERIPH_CLOCK, TRUE);
+        crm_periph_clock_enable(CRM_GPIOC_PERIPH_CLOCK, TRUE);
+
+        /* configure adc channel as analog input */
+        gpio_init_struct.gpio_pins = GPIO_PINS_0 | GPIO_PINS_1 | GPIO_PINS_2 | GPIO_PINS_3 | GPIO_PINS_4 | GPIO_PINS_5;
+        gpio_init_struct.gpio_mode = GPIO_MODE_ANALOG;
+        gpio_init(GPIOC, &gpio_init_struct);
+    }
+#endif
+}
+#endif /* BSP_USING_ADC */
+
+#ifdef BSP_USING_HWTIMER
+void at32_msp_hwtmr_init(void *instance)
+{
+    tmr_type *tmr_x = (tmr_type *)instance;
+
+#ifdef BSP_USING_HWTMR3
+    if(tmr_x == TMR3)
+    {
+        /* tmr3 clock enable */
+        crm_periph_clock_enable(CRM_TMR3_PERIPH_CLOCK, TRUE);
+    }
+#endif
+}
+#endif
+
+#ifdef BSP_USING_CAN
+void at32_msp_can_init(void *instance)
+{
+    gpio_init_type gpio_init_struct;
+    can_type *can_x = (can_type *)instance;
+
+    gpio_default_para_init(&gpio_init_struct);
+    gpio_init_struct.gpio_drive_strength = GPIO_DRIVE_STRENGTH_STRONGER;
+#ifdef BSP_USING_CAN1
+    if(can_x == CAN1)
+    {
+        crm_periph_clock_enable(CRM_CAN1_PERIPH_CLOCK, TRUE);
+        crm_periph_clock_enable(CRM_GPIOB_PERIPH_CLOCK, TRUE);
+
+        gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
+        gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;
+        gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
+        gpio_init_struct.gpio_pins = GPIO_PINS_8 | GPIO_PINS_9;
+        gpio_init(GPIOB, &gpio_init_struct);
+
+        gpio_pin_mux_config(GPIOB, GPIO_PINS_SOURCE8, GPIO_MUX_9);
+        gpio_pin_mux_config(GPIOB, GPIO_PINS_SOURCE9, GPIO_MUX_9);
+    }
+#endif
+#ifdef BSP_USING_CAN2
+    if(can_x == CAN2)
+    {
+        crm_periph_clock_enable(CRM_CAN2_PERIPH_CLOCK, TRUE);
+        crm_periph_clock_enable(CRM_GPIOB_PERIPH_CLOCK, TRUE);
+
+        gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
+        gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;
+        gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
+        gpio_init_struct.gpio_pins = GPIO_PINS_5 | GPIO_PINS_6;
+        gpio_init(GPIOB, &gpio_init_struct);
+
+        gpio_pin_mux_config(GPIOB, GPIO_PINS_SOURCE5, GPIO_MUX_9);
+        gpio_pin_mux_config(GPIOB, GPIO_PINS_SOURCE6, GPIO_MUX_9);
+    }
+#endif
+}
+#endif /* BSP_USING_CAN */
+
+#ifdef BSP_USING_USBFS
+void at32_msp_usb_init(void *instance)
+{
+    /* defalut usb clock from hext */
+    usb_clk48_s clk_s = USB_CLK_HEXT;
+
+    crm_periph_clock_enable(CRM_OTGFS1_PERIPH_CLOCK, TRUE);
+
+    if(clk_s == USB_CLK_HICK)
+    {
+        crm_usb_clock_source_select(CRM_USB_CLOCK_SOURCE_HICK);
+
+        /* enable the acc calibration ready interrupt */
+        crm_periph_clock_enable(CRM_ACC_PERIPH_CLOCK, TRUE);
+
+        /* update the c1\c2\c3 value */
+        acc_write_c1(7980);
+        acc_write_c2(8000);
+        acc_write_c3(8020);
+
+        /* open acc calibration */
+        acc_calibration_mode_enable(ACC_CAL_HICKTRIM, TRUE);
+    }
+    else
+    {
+        switch(system_core_clock)
+        {
+            /* 48MHz */
+            case 48000000:
+                crm_usb_clock_div_set(CRM_USB_DIV_2);
+                break;
+            /* 72MHz */
+            case 72000000:
+                crm_usb_clock_div_set(CRM_USB_DIV_3);
+                break;
+            /* 96MHz */
+            case 96000000:
+                crm_usb_clock_div_set(CRM_USB_DIV_4);
+                break;
+            /* 120MHz */
+            case 120000000:
+                crm_usb_clock_div_set(CRM_USB_DIV_5);
+                break;
+            /* 144MHz */
+            case 144000000:
+                crm_usb_clock_div_set(CRM_USB_DIV_6);
+                break;
+            default:
+                break;
+        }
+    }
+}
+
+#endif /* BSP_USING_USBFS */

bsp/at32/at32f423-start/board/src/board.c

+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2023-04-08     shelton      first version
+ */
+
+#include "board.h"
+
+void system_clock_config(void)
+{
+  /* reset crm */
+  crm_reset();
+
+  /* config flash psr register */
+  flash_psr_set(FLASH_WAIT_CYCLE_4);
+
+  /* ensure system clock to highest, set power ldo output voltage to 1.3v */
+  pwc_ldo_output_voltage_set(PWC_LDO_OUTPUT_1V3);
+
+  crm_clock_source_enable(CRM_CLOCK_SOURCE_HEXT, TRUE);
+
+  /* wait till hext is ready */
+  while(crm_hext_stable_wait() == ERROR)
+  {
+  }
+
+  /* config pll clock resource
+  common frequency config list: pll source selected  hick or hext(8mhz)
+  _____________________________________________________________________________
+  |        |         |         |         |         |         |        |        |
+  | sysclk |   150   |   144   |   120   |   108   |   96    |   72   |   36   |
+  |________|_________|_________|_________|_________|_________|_________________|
+  |        |         |         |         |         |         |        |        |
+  |pll_ns  |   75    |   72    |   120   |   108   |   96    |   72   |   72   |
+  |        |         |         |         |         |         |        |        |
+  |pll_ms  |   1     |   1     |   1     |   1     |   1     |   1    |   1    |
+  |        |         |         |         |         |         |        |        |
+  |pll_fr  |   FR_2  |   FR_2  |   FR_4  |   FR_4  |   FR_4  |   FR_4 |   FR_8 |
+  |________|_________|_________|_________|_________|_________|________|________|
+
+  if pll clock source selects hext with other frequency values, or configure pll to other
+  frequency values, please use the at32 new clock  configuration tool for configuration. */
+  crm_pll_config(CRM_PLL_SOURCE_HEXT, 72, 1, CRM_PLL_FR_2);
+
+  /* enable pll */
+  crm_clock_source_enable(CRM_CLOCK_SOURCE_PLL, TRUE);
+
+  /* wait till pll is ready */
+  while(crm_flag_get(CRM_PLL_STABLE_FLAG) != SET)
+  {
+  }
+
+  /* config ahbclk */
+  crm_ahb_div_set(CRM_AHB_DIV_1);
+
+  /* config apb2clk, the maximum frequency of APB2 clock is 150 MHz  */
+  crm_apb2_div_set(CRM_APB2_DIV_1);
+
+  /* config apb1clk, the maximum frequency of APB1 clock is 120 MHz  */
+  crm_apb1_div_set(CRM_APB1_DIV_2);
+
+  /* enable auto step mode */
+  crm_auto_step_mode_enable(TRUE);
+
+  /* select pll as system clock source */
+  crm_sysclk_switch(CRM_SCLK_PLL);
+
+  /* wait till pll is used as system clock source */
+  while(crm_sysclk_switch_status_get() != CRM_SCLK_PLL)
+  {
+  }
+
+  /* disable auto step mode */
+  crm_auto_step_mode_enable(FALSE);
+
+  /* update system_core_clock global variable */
+  system_core_clock_update();
+}

bsp/at32/at32f423-start/project.eww

+<?xml version="1.0" encoding="iso-8859-1"?>
+
+<workspace>
+  <project>
+    <path>$WS_DIR$\project.ewp</path>
+  </project>
+  <batchBuild/>
+</workspace>
+
+

bsp/at32/at32f423-start/project.uvopt

+<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
+<ProjectOpt xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="project_opt.xsd">
+
+  <SchemaVersion>1.0</SchemaVersion>
+
+  <Header>### uVision Project, (C) Keil Software</Header>
+
+  <Extensions>
+    <cExt>*.c</cExt>
+    <aExt>*.s*; *.src; *.a*</aExt>
+    <oExt>*.obj</oExt>
+    <lExt>*.lib</lExt>
+    <tExt>*.txt; *.h; *.inc; *.md</tExt>
+    <pExt>*.plm</pExt>
+    <CppX>*.cpp</CppX>
+  </Extensions>
+
+  <DaveTm>
+    <dwLowDateTime>0</dwLowDateTime>
+    <dwHighDateTime>0</dwHighDateTime>
+  </DaveTm>
+
+  <Target>
+    <TargetName>rt-thread</TargetName>
+    <ToolsetNumber>0x4</ToolsetNumber>
+    <ToolsetName>ARM-ADS</ToolsetName>
+    <TargetOption>
+      <CLKADS>8000000</CLKADS>
+      <OPTTT>
+        <gFlags>1</gFlags>
+        <BeepAtEnd>1</BeepAtEnd>
+        <RunSim>1</RunSim>
+        <RunTarget>0</RunTarget>
+      </OPTTT>
+      <OPTHX>
+        <HexSelection>1</HexSelection>
+        <FlashByte>65535</FlashByte>
+        <HexRangeLowAddress>0</HexRangeLowAddress>
+        <HexRangeHighAddress>0</HexRangeHighAddress>
+        <HexOffset>0</HexOffset>
+      </OPTHX>
+      <OPTLEX>
+        <PageWidth>79</PageWidth>
+        <PageLength>66</PageLength>
+        <TabStop>8</TabStop>
+        <ListingPath>.\build\keil\List\</ListingPath>
+      </OPTLEX>
+      <ListingPage>
+        <CreateCListing>1</CreateCListing>
+        <CreateAListing>1</CreateAListing>
+        <CreateLListing>1</CreateLListing>
+        <CreateIListing>0</CreateIListing>
+        <AsmCond>1</AsmCond>
+        <AsmSymb>1</AsmSymb>
+        <AsmXref>0</AsmXref>
+        <CCond>1</CCond>
+        <CCode>0</CCode>
+        <CListInc>0</CListInc>
+        <CSymb>0</CSymb>
+        <LinkerCodeListing>0</LinkerCodeListing>
+      </ListingPage>
+      <OPTXL>
+        <LMap>1</LMap>
+        <LComments>1</LComments>
+        <LGenerateSymbols>1</LGenerateSymbols>
+        <LLibSym>1</LLibSym>
+        <LLines>1</LLines>
+        <LLocSym>1</LLocSym>
+        <LPubSym>1</LPubSym>
+        <LXref>0</LXref>
+        <LExpSel>0</LExpSel>
+      </OPTXL>
+      <OPTFL>
+        <tvExp>0</tvExp>
+        <tvExpOptDlg>0</tvExpOptDlg>
+        <IsCurrentTarget>1</IsCurrentTarget>
+      </OPTFL>
+      <CpuCode>0</CpuCode>
+      <DebugOpt>
+        <uSim>0</uSim>
+        <uTrg>1</uTrg>
+        <sLdApp>1</sLdApp>
+        <sGomain>1</sGomain>
+        <sRbreak>1</sRbreak>
+        <sRwatch>1</sRwatch>
+        <sRmem>1</sRmem>
+        <sRfunc>1</sRfunc>
+        <sRbox>1</sRbox>
+        <tLdApp>1</tLdApp>
+        <tGomain>1</tGomain>
+        <tRbreak>1</tRbreak>
+        <tRwatch>1</tRwatch>
+        <tRmem>1</tRmem>
+        <tRfunc>0</tRfunc>
+        <tRbox>1</tRbox>
+        <tRtrace>0</tRtrace>
+        <sRSysVw>1</sRSysVw>
+        <tRSysVw>1</tRSysVw>
+        <tPdscDbg>0</tPdscDbg>
+        <sRunDeb>0</sRunDeb>
+        <sLrtime>0</sLrtime>
+        <nTsel>12</nTsel>
+        <sDll></sDll>
+        <sDllPa></sDllPa>
+        <sDlgDll></sDlgDll>
+        <sDlgPa></sDlgPa>
+        <sIfile></sIfile>
+        <tDll></tDll>
+        <tDllPa></tDllPa>
+        <tDlgDll></tDlgDll>
+        <tDlgPa></tDlgPa>
+        <tIfile></tIfile>
+        <pMon>BIN\CMSIS_AGDI.dll</pMon>
+      </DebugOpt>
+      <TargetDriverDllRegistry>
+        <SetRegEntry>
+          <Number>0</Number>
+          <Key>CMSIS_AGDI</Key>
+          <Name>-X"AT-Link CMSIS-DAP" -U9D69593300C0636C0A176802 -O78 -S0 -C0 -P00 -N00("ARM CoreSight SW-DP") -D00(2BA01477) -L00(0) -FO7 -FD20000000 -FC800 -FN1 -FF0AT32F423_256 -FS08000000 -FL040000</Name>
+        </SetRegEntry>
+        <SetRegEntry>
+          <Number>0</Number>
+          <Key>JL2CM3</Key>
+          <Name>-U788529815 -O78 -S0 -A0 -C0 -JU1 -JI127.0.0.1 -JP0 -RST0 -N00("ARM CoreSight SW-DP") -D00(2BA01477) -L00(4) -TO18 -TC10000000 -TP21 -TDS8007 -TDT0 -TDC1F -TIEFFFFFFFF -TIP8 -TB1 -TFE0 -FO15 -FD20000000 -FC800 -FN1 -FF0AT32F403A_1024 -FS08000000 -FL0100000</Name>
+        </SetRegEntry>
+        <SetRegEntry>
+          <Number>0</Number>
+          <Key>UL2CM3</Key>
+          <Name>UL2CM3(-O14 -S0 -C0 -N00("ARM Cortex-M3") -D00(1BA00477) -L00(4) -FO7  -FN1 -FC800 -FD20000000 -FF0AT32F423_256 -FL040000 -FS08000000</Name>
+        </SetRegEntry>
+      </TargetDriverDllRegistry>
+      <Breakpoint/>
+      <Tracepoint>
+        <THDelay>0</THDelay>
+      </Tracepoint>
+      <DebugFlag>
+        <trace>0</trace>
+        <periodic>0</periodic>
+        <aLwin>0</aLwin>
+        <aCover>0</aCover>
+        <aSer1>0</aSer1>
+        <aSer2>0</aSer2>
+        <aPa>0</aPa>
+        <viewmode>0</viewmode>
+        <vrSel>0</vrSel>
+        <aSym>0</aSym>
+        <aTbox>0</aTbox>
+        <AscS1>0</AscS1>
+        <AscS2>0</AscS2>
+        <AscS3>0</AscS3>
+        <aSer3>0</aSer3>
+        <eProf>0</eProf>
+        <aLa>0</aLa>
+        <aPa1>0</aPa1>
+        <AscS4>0</AscS4>
+        <aSer4>0</aSer4>
+        <StkLoc>0</StkLoc>
+        <TrcWin>0</TrcWin>
+        <newCpu>0</newCpu>
+        <uProt>0</uProt>
+      </DebugFlag>
+      <LintExecutable></LintExecutable>
+      <LintConfigFile></LintConfigFile>
+    </TargetOption>
+  </Target>
+
+</ProjectOpt>

bsp/at32/at32f423-start/project.uvoptx

+<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
+<ProjectOpt xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="project_optx.xsd">
+
+  <SchemaVersion>1.0</SchemaVersion>
+
+  <Header>### uVision Project, (C) Keil Software</Header>
+
+  <Extensions>
+    <cExt>*.c</cExt>
+    <aExt>*.s*; *.src; *.a*</aExt>
+    <oExt>*.obj; *.o</oExt>
+    <lExt>*.lib</lExt>
+    <tExt>*.txt; *.h; *.inc; *.md</tExt>
+    <pExt>*.plm</pExt>
+    <CppX>*.cpp</CppX>
+    <nMigrate>0</nMigrate>
+  </Extensions>
+
+  <DaveTm>
+    <dwLowDateTime>0</dwLowDateTime>
+    <dwHighDateTime>0</dwHighDateTime>
+  </DaveTm>
+
+  <Target>
+    <TargetName>rt-thread</TargetName>
+    <ToolsetNumber>0x4</ToolsetNumber>
+    <ToolsetName>ARM-ADS</ToolsetName>
+    <TargetOption>
+      <CLKADS>12000000</CLKADS>
+      <OPTTT>
+        <gFlags>1</gFlags>
+        <BeepAtEnd>1</BeepAtEnd>
+        <RunSim>0</RunSim>
+        <RunTarget>1</RunTarget>
+        <RunAbUc>0</RunAbUc>
+      </OPTTT>
+      <OPTHX>
+        <HexSelection>1</HexSelection>
+        <FlashByte>65535</FlashByte>
+        <HexRangeLowAddress>0</HexRangeLowAddress>
+        <HexRangeHighAddress>0</HexRangeHighAddress>
+        <HexOffset>0</HexOffset>
+      </OPTHX>
+      <OPTLEX>
+        <PageWidth>79</PageWidth>
+        <PageLength>66</PageLength>
+        <TabStop>8</TabStop>
+        <ListingPath>.\build\keil\List\</ListingPath>
+      </OPTLEX>
+      <ListingPage>
+        <CreateCListing>1</CreateCListing>
+        <CreateAListing>1</CreateAListing>
+        <CreateLListing>1</CreateLListing>
+        <CreateIListing>0</CreateIListing>
+        <AsmCond>1</AsmCond>
+        <AsmSymb>1</AsmSymb>
+        <AsmXref>0</AsmXref>
+        <CCond>1</CCond>
+        <CCode>0</CCode>
+        <CListInc>0</CListInc>
+        <CSymb>0</CSymb>
+        <LinkerCodeListing>0</LinkerCodeListing>
+      </ListingPage>
+      <OPTXL>
+        <LMap>1</LMap>
+        <LComments>1</LComments>
+        <LGenerateSymbols>1</LGenerateSymbols>
+        <LLibSym>1</LLibSym>
+        <LLines>1</LLines>
+        <LLocSym>1</LLocSym>
+        <LPubSym>1</LPubSym>
+        <LXref>0</LXref>
+        <LExpSel>0</LExpSel>
+      </OPTXL>
+      <OPTFL>
+        <tvExp>1</tvExp>
+        <tvExpOptDlg>0</tvExpOptDlg>
+        <IsCurrentTarget>1</IsCurrentTarget>
+      </OPTFL>
+      <CpuCode>255</CpuCode>
+      <DebugOpt>
+        <uSim>0</uSim>
+        <uTrg>1</uTrg>
+        <sLdApp>1</sLdApp>
+        <sGomain>1</sGomain>
+        <sRbreak>1</sRbreak>
+        <sRwatch>1</sRwatch>
+        <sRmem>1</sRmem>
+        <sRfunc>1</sRfunc>
+        <sRbox>1</sRbox>
+        <tLdApp>1</tLdApp>
+        <tGomain>1</tGomain>
+        <tRbreak>1</tRbreak>
+        <tRwatch>1</tRwatch>
+        <tRmem>1</tRmem>
+        <tRfunc>0</tRfunc>
+        <tRbox>1</tRbox>
+        <tRtrace>1</tRtrace>
+        <sRSysVw>1</sRSysVw>
+        <tRSysVw>1</tRSysVw>
+        <sRunDeb>0</sRunDeb>
+        <sLrtime>0</sLrtime>
+        <bEvRecOn>1</bEvRecOn>
+        <bSchkAxf>0</bSchkAxf>
+        <bTchkAxf>0</bTchkAxf>
+        <nTsel>3</nTsel>
+        <sDll></sDll>
+        <sDllPa></sDllPa>
+        <sDlgDll></sDlgDll>
+        <sDlgPa></sDlgPa>
+        <sIfile></sIfile>
+        <tDll></tDll>
+        <tDllPa></tDllPa>
+        <tDlgDll></tDlgDll>
+        <tDlgPa></tDlgPa>
+        <tIfile></tIfile>
+        <pMon>BIN\CMSIS_AGDI.dll</pMon>
+      </DebugOpt>
+      <TargetDriverDllRegistry>
+        <SetRegEntry>
+          <Number>0</Number>
+          <Key>UL2CM3</Key>
+          <Name>UL2CM3(-S0 -C0 -P0 )  -FN1 -FC1000 -FD20000000 -FF0AT32F423_256 -FL040000 -FS08000000 -FP0($$Device:-AT32F423VCT7$Flash\AT32F423_256.FLM)</Name>
+        </SetRegEntry>
+        <SetRegEntry>
+          <Number>0</Number>
+          <Key>CMSIS_AGDI</Key>
+          <Name>-X"Any" -UAny -O206 -S0 -C0 -P00000000 -N00("ARM CoreSight SW-DP") -D00(2BA01477) -L00(0) -TO65554 -TC10000000 -TT10000000 -TP20 -TDS8007 -TDT0 -TDC1F -TIEFFFFFFFF -TIP8 -FO7 -FD20000000 -FC1000 -FN1 -FF0AT32F423_256.FLM -FS08000000 -FL040000 -FP0($$Device:-AT32F423VCT7$Flash\AT32F423_256.FLM)</Name>
+        </SetRegEntry>
+      </TargetDriverDllRegistry>
+      <Breakpoint/>
+      <Tracepoint>
+        <THDelay>0</THDelay>
+      </Tracepoint>
+      <DebugFlag>
+        <trace>0</trace>
+        <periodic>0</periodic>
+        <aLwin>0</aLwin>
+        <aCover>0</aCover>
+        <aSer1>0</aSer1>
+        <aSer2>0</aSer2>
+        <aPa>0</aPa>
+        <viewmode>0</viewmode>
+        <vrSel>0</vrSel>
+        <aSym>0</aSym>
+        <aTbox>0</aTbox>
+        <AscS1>0</AscS1>
+        <AscS2>0</AscS2>
+        <AscS3>0</AscS3>
+        <aSer3>0</aSer3>
+        <eProf>0</eProf>
+        <aLa>0</aLa>
+        <aPa1>0</aPa1>
+        <AscS4>0</AscS4>
+        <aSer4>0</aSer4>
+        <StkLoc>0</StkLoc>
+        <TrcWin>0</TrcWin>
+        <newCpu>0</newCpu>
+        <uProt>0</uProt>
+      </DebugFlag>
+      <LintExecutable></LintExecutable>
+      <LintConfigFile></LintConfigFile>
+      <bLintAuto>0</bLintAuto>
+      <bAutoGenD>0</bAutoGenD>
+      <LntExFlags>0</LntExFlags>
+      <pMisraName></pMisraName>
+      <pszMrule></pszMrule>
+      <pSingCmds></pSingCmds>
+      <pMultCmds></pMultCmds>
+      <pMisraNamep></pMisraNamep>
+      <pszMrulep></pszMrulep>
+      <pSingCmdsp></pSingCmdsp>
+      <pMultCmdsp></pMultCmdsp>
+    </TargetOption>
+  </Target>
+
+  <Group>
+    <GroupName>Source Group 1</GroupName>
+    <tvExp>0</tvExp>
+    <tvExpOptDlg>0</tvExpOptDlg>
+    <cbSel>0</cbSel>
+    <RteFlg>0</RteFlg>
+  </Group>
+
+</ProjectOpt>

bsp/at32/at32f423-start/rtconfig.h

+#ifndef RT_CONFIG_H__
+#define RT_CONFIG_H__
+
+/* Automatically generated file; DO NOT EDIT. */
+/* RT-Thread Configuration */
+
+/* RT-Thread Kernel */
+
+#define RT_NAME_MAX 8
+#define RT_ALIGN_SIZE 8
+#define RT_THREAD_PRIORITY_32
+#define RT_THREAD_PRIORITY_MAX 32
+#define RT_TICK_PER_SECOND 1000
+#define RT_USING_OVERFLOW_CHECK
+#define RT_USING_HOOK
+#define RT_HOOK_USING_FUNC_PTR
+#define RT_USING_IDLE_HOOK
+#define RT_IDLE_HOOK_LIST_SIZE 4
+#define IDLE_THREAD_STACK_SIZE 256
+#define RT_USING_TIMER_SOFT
+#define RT_TIMER_THREAD_PRIO 4
+#define RT_TIMER_THREAD_STACK_SIZE 512
+
+/* kservice optimization */
+
+#define RT_DEBUG
+#define RT_DEBUG_COLOR
+
+/* Inter-Thread communication */
+
+#define RT_USING_SEMAPHORE
+#define RT_USING_MUTEX
+#define RT_USING_EVENT
+#define RT_USING_MAILBOX
+#define RT_USING_MESSAGEQUEUE
+
+/* Memory Management */
+
+#define RT_PAGE_MAX_ORDER 11
+#define RT_USING_MEMPOOL
+#define RT_USING_SMALL_MEM
+#define RT_USING_MEMHEAP
+#define RT_MEMHEAP_FAST_MODE
+#define RT_USING_SMALL_MEM_AS_HEAP
+#define RT_USING_HEAP
+
+/* Kernel Device Object */
+
+#define RT_USING_DEVICE
+#define RT_USING_CONSOLE
+#define RT_CONSOLEBUF_SIZE 128
+#define RT_CONSOLE_DEVICE_NAME "uart1"
+#define RT_VER_NUM 0x50001
+#define RT_USING_HW_ATOMIC
+#define RT_USING_CPU_FFS
+#define ARCH_ARM
+#define ARCH_ARM_CORTEX_M
+#define ARCH_ARM_CORTEX_M4
+
+/* RT-Thread Components */
+
+#define RT_USING_COMPONENTS_INIT
+#define RT_USING_USER_MAIN
+#define RT_MAIN_THREAD_STACK_SIZE 2048
+#define RT_MAIN_THREAD_PRIORITY 10
+#define RT_USING_MSH
+#define RT_USING_FINSH
+#define FINSH_USING_MSH
+#define FINSH_THREAD_NAME "tshell"
+#define FINSH_THREAD_PRIORITY 20
+#define FINSH_THREAD_STACK_SIZE 4096
+#define FINSH_USING_HISTORY
+#define FINSH_HISTORY_LINES 5
+#define FINSH_USING_SYMTAB
+#define FINSH_CMD_SIZE 80
+#define MSH_USING_BUILT_IN_COMMANDS
+#define FINSH_USING_DESCRIPTION
+#define FINSH_ARG_MAX 10
+
+/* Device Drivers */
+
+#define RT_USING_DEVICE_IPC
+#define RT_UNAMED_PIPE_NUMBER 64
+#define RT_USING_SERIAL
+#define RT_USING_SERIAL_V1
+#define RT_SERIAL_USING_DMA
+#define RT_SERIAL_RB_BUFSZ 64
+#define RT_USING_PIN
+
+/* Using USB */
+
+
+/* C/C++ and POSIX layer */
+
+#define RT_LIBC_DEFAULT_TIMEZONE 8
+
+/* POSIX (Portable Operating System Interface) layer */
+
+
+/* Interprocess Communication (IPC) */
+
+
+/* Socket is in the 'Network' category */
+
+
+/* Network */
+
+
+/* Utilities */
+
+
+/* RT-Thread Utestcases */
+
+
+/* RT-Thread online packages */
+
+/* IoT - internet of things */
+
+
+/* Wi-Fi */
+
+/* Marvell WiFi */
+
+
+/* Wiced WiFi */
+
+
+/* IoT Cloud */
+
+
+/* security packages */
+
+
+/* language packages */
+
+
+/* multimedia packages */
+
+
+/* tools packages */
+
+
+/* system packages */
+
+
+/* peripheral libraries and drivers */
+
+
+/* miscellaneous packages */
+
+
+/* samples: kernel and components samples */
+
+#define SOC_FAMILY_AT32
+#define SOC_SERIES_AT32F423
+
+/* Hardware Drivers Config */
+
+#define SOC_AT32F423VCT7
+
+/* Onboard Peripheral Drivers */
+
+#define BSP_USING_SERIAL
+
+/* On-chip Peripheral Drivers */
+
+#define BSP_USING_GPIO
+#define BSP_USING_UART
+#define BSP_USING_UART1
+
+#endif

bsp/at32/at32f423-start/rtconfig.py

+import os
+
+# toolchains options
+ARCH='arm'
+CPU='cortex-m4'
+CROSS_TOOL='gcc'
+
+# bsp lib config
+BSP_LIBRARY_TYPE = None
+
+if os.getenv('RTT_CC'):
+    CROSS_TOOL = os.getenv('RTT_CC')
+if os.getenv('RTT_ROOT'):
+    RTT_ROOT = os.getenv('RTT_ROOT')
+
+# cross_tool provides the cross compiler
+# EXEC_PATH is the compiler execute path, for example, CodeSourcery, Keil MDK, IAR
+if  CROSS_TOOL == 'gcc':
+    PLATFORM    = 'gcc'
+    EXEC_PATH   = r'C:\Users\XXYYZZ'
+elif CROSS_TOOL == 'keil':
+    PLATFORM    = 'armcc'
+    EXEC_PATH   = r'C:/Keil_v5'
+elif CROSS_TOOL == 'iar':
+    PLATFORM    = 'iccarm'
+    EXEC_PATH   = r'C:/Program Files (x86)/IAR Systems/Embedded Workbench 8.3'
+
+if os.getenv('RTT_EXEC_PATH'):
+    EXEC_PATH = os.getenv('RTT_EXEC_PATH')
+
+BUILD = 'debug'
+
+if PLATFORM == 'gcc':
+    # toolchains
+    PREFIX = 'arm-none-eabi-'
+    CC = PREFIX + 'gcc'
+    AS = PREFIX + 'gcc'
+    AR = PREFIX + 'ar'
+    CXX = PREFIX + 'g++'
+    LINK = PREFIX + 'gcc'
+    TARGET_EXT = 'elf'
+    SIZE = PREFIX + 'size'
+    OBJDUMP = PREFIX + 'objdump'
+    OBJCPY = PREFIX + 'objcopy'
+
+    DEVICE = ' -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -ffunction-sections -fdata-sections'
+    CFLAGS = DEVICE + ' -Dgcc'
+    AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp -Wa,-mimplicit-it=thumb '
+    LFLAGS = DEVICE + ' -Wl,--gc-sections,-Map=rt-thread.map,-cref,-u,Reset_Handler -T board/linker_scripts/link.lds'
+
+    CPATH = ''
+    LPATH = ''
+
+    if BUILD == 'debug':
+        CFLAGS += ' -O0 -gdwarf-2 -g'
+        AFLAGS += ' -gdwarf-2'
+    else:
+        CFLAGS += ' -O2'
+
+    CXXFLAGS = CFLAGS
+
+    POST_ACTION = OBJCPY + ' -O binary $TARGET rtthread.bin\n' + SIZE + ' $TARGET \n'
+
+elif PLATFORM == 'armcc':
+    # toolchains
+    CC = 'armcc'
+    CXX = 'armcc'
+    AS = 'armasm'
+    AR = 'armar'
+    LINK = 'armlink'
+    TARGET_EXT = 'axf'
+
+    DEVICE = ' --cpu Cortex-M4.fp '
+    CFLAGS = '-c ' + DEVICE + ' --apcs=interwork --c99'
+    AFLAGS = DEVICE + ' --apcs=interwork '
+    LFLAGS = DEVICE + ' --scatter "board\linker_scripts\link.sct" --info sizes --info totals --info unused --info veneers --list rt-thread.map --strict'
+    CFLAGS += ' -I' + EXEC_PATH + '/ARM/ARMCC/include'
+    LFLAGS += ' --libpath=' + EXEC_PATH + '/ARM/ARMCC/lib'
+
+    CFLAGS += ' -D__MICROLIB '
+    AFLAGS += ' --pd "__MICROLIB SETA 1" '
+    LFLAGS += ' --library_type=microlib '
+    EXEC_PATH += '/ARM/ARMCC/bin/'
+
+    if BUILD == 'debug':
+        CFLAGS += ' -g -O0'
+        AFLAGS += ' -g'
+    else:
+        CFLAGS += ' -O2'
+
+    CXXFLAGS = CFLAGS
+    CFLAGS += ' -std=c99'
+
+    POST_ACTION = 'fromelf --bin $TARGET --output rtthread.bin \nfromelf -z $TARGET'
+
+elif PLATFORM == 'iccarm':
+    # toolchains
+    CC = 'iccarm'
+    CXX = 'iccarm'
+    AS = 'iasmarm'
+    AR = 'iarchive'
+    LINK = 'ilinkarm'
+    TARGET_EXT = 'out'
+
+    DEVICE = '-Dewarm'
+
+    CFLAGS = DEVICE
+    CFLAGS += ' --diag_suppress Pa050'
+    CFLAGS += ' --no_cse'
+    CFLAGS += ' --no_unroll'
+    CFLAGS += ' --no_inline'
+    CFLAGS += ' --no_code_motion'
+    CFLAGS += ' --no_tbaa'
+    CFLAGS += ' --no_clustering'
+    CFLAGS += ' --no_scheduling'
+    CFLAGS += ' --endian=little'
+    CFLAGS += ' --cpu=Cortex-M4'
+    CFLAGS += ' -e'
+    CFLAGS += ' --fpu=VFPv4_sp'
+    CFLAGS += ' --dlib_config "' + EXEC_PATH + '/arm/INC/c/DLib_Config_Normal.h"'
+    CFLAGS += ' --silent'
+
+    AFLAGS = DEVICE
+    AFLAGS += ' -s+'
+    AFLAGS += ' -w+'
+    AFLAGS += ' -r'
+    AFLAGS += ' --cpu Cortex-M4'
+    AFLAGS += ' --fpu VFPv4_sp'
+    AFLAGS += ' -S'
+
+    if BUILD == 'debug':
+        CFLAGS += ' --debug'
+        CFLAGS += ' -On'
+    else:
+        CFLAGS += ' -Oh'
+
+    LFLAGS = ' --config "board/linker_scripts/link.icf"'
+    LFLAGS += ' --entry __iar_program_start'
+
+    CXXFLAGS = CFLAGS
+
+    EXEC_PATH = EXEC_PATH + '/arm/bin/'
+    POST_ACTION = 'ielftool --bin $TARGET rtthread.bin'
+
+def dist_handle(BSP_ROOT, dist_dir):
+    import sys
+    cwd_path = os.getcwd()
+    sys.path.append(os.path.join(os.path.dirname(BSP_ROOT), 'tools'))
+    from sdk_dist import dist_do_building
+    dist_do_building(BSP_ROOT, dist_dir)

bsp/at32/at32f423-start/template.eww

+<?xml version="1.0" encoding="iso-8859-1"?>
+
+<workspace>
+  <project>
+    <path>$WS_DIR$\template.ewp</path>
+  </project>
+  <batchBuild/>
+</workspace>
+
+

bsp/at32/at32f425-start/board/src/at32_msp.c

@@ -252,7 +252,7 @@ void at32_msp_can_init(void *instance)
 void at32_msp_usb_init(void *instance)
 {
     /* defalut usb clock from hext */
-    usb_clk48_s clk_s = USB_CLK_HICK;
+    usb_clk48_s clk_s = USB_CLK_HEXT;
 
     crm_periph_clock_enable(CRM_OTGFS1_PERIPH_CLOCK, TRUE);
 

bsp/at32/libraries/AT32F423_Firmware_Library/SConscript

+import rtconfig
+from building import *
+
+# get current directory
+cwd = GetCurrentDir()
+
+# The set of source files associated with this SConscript file.
+src = Split("""
+cmsis/cm4/device_support/system_at32f423.c
+drivers/src/at32f423_acc.c
+drivers/src/at32f423_adc.c
+drivers/src/at32f423_can.c
+drivers/src/at32f423_crc.c
+drivers/src/at32f423_crm.c
+drivers/src/at32f423_dac.c
+drivers/src/at32f423_debug.c
+drivers/src/at32f423_dma.c
+drivers/src/at32f423_ertc.c
+drivers/src/at32f423_exint.c
+drivers/src/at32f423_flash.c
+drivers/src/at32f423_gpio.c
+drivers/src/at32f423_i2c.c
+drivers/src/at32f423_misc.c
+drivers/src/at32f423_pwc.c
+drivers/src/at32f423_scfg.c
+drivers/src/at32f423_spi.c
+drivers/src/at32f423_tmr.c
+drivers/src/at32f423_usart.c
+drivers/src/at32f423_usb.c
+drivers/src/at32f423_wdt.c
+drivers/src/at32f423_wwdt.c
+drivers/src/at32f423_xmc.c
+""")
+
+path = [
+    cwd + '/cmsis/cm4/device_support',
+    cwd + '/cmsis/cm4/core_support',
+    cwd + '/drivers/inc',]
+
+CPPDEFINES = ['USE_STDPERIPH_DRIVER']
+
+group = DefineGroup('Libraries', src, depend = [''], CPPPATH = path, CPPDEFINES = CPPDEFINES)
+
+Return('group')

bsp/at32/libraries/AT32F423_Firmware_Library/cmsis/cm4/device_support/startup/iar/linker/AT32F423x8.icf

+/*###ICF### Section handled by ICF editor, don't touch! ****/
+/*-Editor annotation file-*/
+/* IcfEditorFile="$TOOLKIT_DIR$\config\ide\IcfEditor\cortex_v1_0.xml" */
+/*-Specials-*/
+define symbol __ICFEDIT_intvec_start__ = 0x08000000;
+/*-Memory Regions-*/
+define symbol __ICFEDIT_region_ROM_start__ = 0x08000000;
+define symbol __ICFEDIT_region_ROM_end__   = 0x0800FFFF;
+define symbol __ICFEDIT_region_RAM_start__ = 0x20000000;
+define symbol __ICFEDIT_region_RAM_end__   = 0x20007FFF;
+/*-Sizes-*/
+define symbol __ICFEDIT_size_cstack__ = 0x1000;
+define symbol __ICFEDIT_size_heap__   = 0x1000;
+/**** End of ICF editor section. ###ICF###*/
+
+define memory mem with size = 4G;
+define region ROM_region   = mem:[from __ICFEDIT_region_ROM_start__   to __ICFEDIT_region_ROM_end__];
+define region RAM_region   = mem:[from __ICFEDIT_region_RAM_start__   to __ICFEDIT_region_RAM_end__];
+
+define block CSTACK    with alignment = 8, size = __ICFEDIT_size_cstack__   { };
+define block HEAP      with alignment = 8, size = __ICFEDIT_size_heap__     { };
+
+initialize by copy { readwrite };
+do not initialize  { section .noinit };
+
+place at address mem:__ICFEDIT_intvec_start__ { readonly section .intvec };
+
+place in ROM_region   { readonly };
+place in RAM_region   { readwrite,
+                        block CSTACK, block HEAP };
\ No newline at end of file