[bsp/wch/arm/ch32f103c8-core/board/board.h]: add macro definition.

[bsp/wch/arm/ch32f10x_port_cn.md]: add ch32f10x_port_cn.md.

bsp/wch/arm/ch32f103c8-core/board/board.h

@@ -45,15 +45,33 @@ extern int __bss_end;
 
 
 rt_uint32_t ch32_get_sysclock_frequency(void);
+
+#ifdef BSP_USING_UART
 void ch32f1_usart_clock_and_io_init(USART_TypeDef* usartx);
+#endif
+
+#ifdef BSP_USING_SPI
 void ch32f1_spi_clock_and_io_init(SPI_TypeDef* spix);
 rt_uint32_t ch32f1_spi_clock_get(SPI_TypeDef* spix);
+#endif
+
+#ifdef BSP_USING_HWI2C
 void ch32f1_i2c_clock_and_io_init(I2C_TypeDef* i2cx);
 void ch32f1_i2c_config(I2C_TypeDef* i2cx);
+#endif
+
+#ifdef BSP_USING_TIM
 void ch32f1_tim_clock_init(TIM_TypeDef *timx);
 rt_uint32_t ch32f1_tim_clock_get(TIM_TypeDef *timx);
+
+#ifdef BSP_USING_HWTIMER
 struct rt_hwtimer_info* ch32f1_hwtimer_info_config_get(TIM_TypeDef *timx);
+#endif
+
+#ifdef BSP_USING_PWM
 void ch32f1_pwm_io_init(TIM_TypeDef *timx, rt_uint8_t channel);
+#endif
+#endif
 
 
 

bsp/wch/arm/ch32f10x_port_cn.md

+# CH32F10X系列BSP移植
+## 1 工程结构
++ wch\arm\ch32f103c8-core
++ wch\arm\Libraries
++ wch\arm\Libraries\ch32_drivers
++ wch\arm\Libraries\CH32F10x_StdPeriph_Driver
++ wch\arm\tools
+
+ch32f103c8-core为移植到具体芯片的BSP, Libraries存放的是厂商的驱动库(CH32F10x_StdPeriph_Driver等)和适配rt-thread的驱动(ch32_drivers),
+tools是在env环境下使用scons --dist所需要的依赖工具
+
+### 1.1 已适配rt-thread的驱动(ch32_drivers)：
+现已支持以下驱动(支持的驱动，使用到的宏开关，需要实现的接口)：
++ GPIO
+   + RT_USING_PIN
++ UART 1/2/3
+   + RT_USING_SERIAL
+   + BSP_USING_UART
+      + BSP_USING_UART1
+      + BSP_USING_UART2
+      + BSP_USING_UART3
+~~~c
+void ch32f1_usart_clock_and_io_init(USART_TypeDef* usartx);
+~~~
++ SPI 1/2
+   + RT_USING_SPI
+   + BSP_USING_SPI
+      + BSP_USING_SPI1
+      + BSP_USING_SPI2
+~~~c
+void ch32f1_spi_clock_and_io_init(SPI_TypeDef* spix);
+rt_uint32_t ch32f1_spi_clock_get(SPI_TypeDef* spix);
+~~~
++ I2C(hardware) 1/2
+   + RT_USING_I2C
+   + BSP_USING_HWI2C
+      + BSP_USING_HWI2C1
+      + BSP_USING_HWI2C2
+~~~c
+void ch32f1_i2c_clock_and_io_init(I2C_TypeDef* i2cx);
+void ch32f1_i2c_config(I2C_TypeDef* i2cx);
+~~~
++ WDT
+   + RT_USING_WDT
+   + BSP_USING_IWDT
+      + LSI_VALUE
++ RTC
+   + RT_USING_RTC
+   + BSP_USING_RTC
+      + BSP_USING_RTC_LSI
+      + LSI_VALUE
++ HWTIMER 1/2/3/4
+   + RT_USING_HWTIMER
+   + BSP_USING_HWTIMER
+      + BSP_USING_TIM1_HWTIMER
+      + BSP_USING_TIM2_HWTIMER
+      + BSP_USING_TIM3_HWTIMER
+      + BSP_USING_TIM4_HWTIMER
+~~~c
+void ch32f1_tim_clock_init(TIM_TypeDef *timx);
+rt_uint32_t ch32f1_tim_clock_get(TIM_TypeDef *timx);
+~~~
+~~~c
+struct rt_hwtimer_info* ch32f1_hwtimer_info_config_get(TIM_TypeDef *timx);
+~~~
++ PWM  4(timer) x 4 (channel)
+   + RT_USING_PWM
+   + BSP_USING_TIM1_PWM
+      + BSP_USING_TIM1_PWM_CH1
+      + BSP_USING_TIM1_PWM_CH2
+      + BSP_USING_TIM1_PWM_CH3
+      + BSP_USING_TIM1_PWM_CH4
+   + BSP_USING_TIM2_PWM
+      + BSP_USING_TIM2_PWM_CH1
+      + BSP_USING_TIM2_PWM_CH2
+      + BSP_USING_TIM2_PWM_CH3
+      + BSP_USING_TIM2_PWM_CH4
+   + BSP_USING_TIM3_PWM
+      + BSP_USING_TIM3_PWM_CH1
+      + BSP_USING_TIM3_PWM_CH2
+      + BSP_USING_TIM3_PWM_CH3
+      + BSP_USING_TIM3_PWM_CH4
+   + BSP_USING_TIM4_PWM
+      + BSP_USING_TIM4_PWM_CH1
+      + BSP_USING_TIM4_PWM_CH2
+      + BSP_USING_TIM4_PWM_CH3
+      + BSP_USING_TIM4_PWM_CH4
+~~~c
+void ch32f1_pwm_io_init(TIM_TypeDef *timx, rt_uint8_t channel);
+~~~
+其中需要依赖定时器的接口：
+~~~c
+void ch32f1_tim_clock_init(TIM_TypeDef *timx);
+rt_uint32_t ch32f1_tim_clock_get(TIM_TypeDef *timx);
+~~~
+
+
+### 1.2 需要实现的接口：
+除了使用上面驱动提及的接口外，以下的接口必须实现：
+~~~c
+rt_uint32_t ch32_get_sysclock_frequency(void);
+~~~
+## 2 构建具体芯片BSP
+以ch32f103c8-core为例，在ENV环境下，使用MDK，至少需要准备
++ ch32f103c8-core (具体的BSP名)
++ ch32f103c8-core\applications
++ ch32f103c8-core\applications\SConscript
++ ch32f103c8-core\applications\main.c
++ ch32f103c8-core\board
++ ch32f103c8-core\board\linker_scripts
++ ch32f103c8-core\board\linker_scripts\link.sct
++ ch32f103c8-core\board\board.c
++ ch32f103c8-core\board\board.h
++ ch32f103c8-core\board\ch32f10x_conf.h
++ ch32f103c8-core\board\system_ch32f10x.c
++ ch32f103c8-core\board\Kconfig
++ ch32f103c8-core\board\SConscript
++ ch32f103c8-core\Kconfig
++ ch32f103c8-core\rtconfig.py
++ ch32f103c8-core\SConscript
++ ch32f103c8-core\SConstruct
++ ch32f103c8-core\template.uvprojx
+
+### 2.1 创建template.uvprojx
+新建名为template的MDK工程，删除多余的子目录target1，将目录改名为rtthread-ch32f103x，options选项栏device设置具体芯片，user编译后的动作, 如"fromelf --bin !L --output rtthread.bin"
+
+### 2.2 编写board/Kconfig
+
+~~~
+menu "Hardware Drivers Config"
+
+config SOC_CH32F103C8
+        bool
+        select SOC_ARM_SERIES_CH32F103
+        select RT_USING_COMPONENTS_INIT
+        select RT_USING_USER_MAIN
+        default y
+~~~
+SOC_CH32F103C8为具体的芯片，SOC_ARM_SERIES_CH32F103在Libraries\Kconfig下已定义。
+RT_USING_COMPONENTS_INIT，RT_USING_USER_MAIN为rt-thread设备框架默认选项。
+
+
+使用适配的驱动根据宏开关编写即可，以串口驱动为例：
++ BSP_USING_XXX
+   + select RT_USING_XXX
+      + BSP_USING_XXX1
+      + BSP_USING_XXX2
+
+~~~
+menu "On-chip Peripheral Drivers"
+
+config BSP_USING_UART
+        bool "using onchip usart"
+        select RT_USING_SERIAL
+        default n
+
+        if BSP_USING_UART
+                config BSP_USING_UART1
+                        bool "using uart1"
+                        default n
+
+                config BSP_USING_UART2
+                        bool "using uart2"
+                        default n
+
+                config BSP_USING_UART3
+                        bool "using uart3"
+                        default n
+        endif
+~~~
+
+比较特殊的定时器和PWM驱动额外定义了以下宏开关，详见ch32f103c8-core。
++ BSP_USING_TIM
+   + BSP_USING_TIM1
+   + BSP_USING_TIM2
+   + BSP_USING_TIM3
+   + BSP_USING_TIM4
+### 2.3 在board/board.h加入接口，并在board/board.c实现
+使用适配的驱动根据宏开关编写即可,如串口驱动：
++ BSP_USING_XXX
+~~~
+#ifdef BSP_USING_UART
+void ch32f1_usart_clock_and_io_init(USART_TypeDef* usartx);
+#endif
+~~~
+比较特殊的定时器和PWM驱动使用额外定义了的宏开关
+~~~c
+#ifdef BSP_USING_TIM
+void ch32f1_tim_clock_init(TIM_TypeDef *timx);
+rt_uint32_t ch32f1_tim_clock_get(TIM_TypeDef *timx);
+
+#ifdef BSP_USING_HWTIMER
+struct rt_hwtimer_info* ch32f1_hwtimer_info_config_get(TIM_TypeDef *timx);
+#endif
+
+#ifdef BSP_USING_PWM
+void ch32f1_pwm_io_init(TIM_TypeDef *timx, rt_uint8_t channel);
+#endif
+#endif
+~~~