[drv_usart]完善ch32的串口驱动。 (#6336)

bsp/wch/risc-v/Libraries/ch32_drivers/drv_usart.c

@@ -5,94 +5,227 @@
  *
  * Change Logs:
  * Date           Author       Notes
- * 2009-01-05     Bernard      the first version
- * 2010-03-29     Bernard      remove interrupt Tx and DMA Rx mode
- * 2013-05-13     aozima       update for kehong-lingtai.
- * 2015-01-31     armink       make sure the serial transmit complete in putc()
- * 2016-05-13     armink       add DMA Rx mode
- * 2017-01-19     aubr.cool    add interrupt Tx mode
- * 2017-04-13     aubr.cool    correct Rx parity err
- * 2017-10-20     ZYH          porting to HAL Libraries(with out DMA)
- * 2017-11-15     ZYH          update to 3.0.0
+ * 2022-08-27     liYony       the first version
  */
 
 #include "board.h"
 #include <rtdevice.h>
 #include <drv_usart.h>
 
-/*  uart driver */
-struct ch32_uart
+#ifdef RT_USING_SERIAL
+
+//#define DRV_DEBUG
+#define LOG_TAG              "drv.uart"
+#include <drv_log.h>
+
+#if !defined(BSP_USING_UART1) && !defined(BSP_USING_UART2) && !defined(BSP_USING_UART3) && !defined(BSP_USING_UART4) && \
+    !defined(BSP_USING_UART5) && !defined(BSP_USING_UART6) && !defined(BSP_USING_UART7) && !defined(BSP_USING_UART8)
+    #error "Please define at least one BSP_USING_UARTx"
+    /* this driver can be disabled at menuconfig -> RT-Thread Components -> Device Drivers */
+#endif
+
+enum
+{
+#ifdef BSP_USING_UART1
+    UART1_INDEX,
+#endif
+#ifdef BSP_USING_UART2
+    UART2_INDEX,
+#endif
+#ifdef BSP_USING_UART3
+    UART3_INDEX,
+#endif
+#ifdef BSP_USING_UART4
+    UART4_INDEX,
+#endif
+#ifdef BSP_USING_UART5
+    UART5_INDEX,
+#endif
+#ifdef BSP_USING_UART6
+    UART6_INDEX,
+#endif
+#ifdef BSP_USING_UART7
+    UART7_INDEX,
+#endif
+#ifdef BSP_USING_UART8
+    UART8_INDEX,
+#endif
+};
+
+/* If you want to use other serial ports, please follow UART1 to complete other
+  serial ports. For clock configuration,  */
+static struct ch32_uart_hw_config uart_hw_config[] =
+{
+#ifdef BSP_USING_UART1
+    {
+        /* clock configuration, please refer to ch32v30x_rcc.h */
+        RCC_APB2Periph_USART1|RCC_APB2Periph_GPIOA,
+        /* GPIO  configuration : TX_Port,TX_Pin, RX_Port,RX_Pin */
+        GPIOA, GPIO_Pin_9, /* Tx */GPIOA, GPIO_Pin_10, /* Rx */
+        /* Whether to enable port remapping, you can refer to ch32v30x_gpio.h file,
+        for example, USART1 needs to be turned on, you can use GPIO_Remap_USART1 */
+        GPIO_Remap_NONE,
+    },
+#endif
+#ifdef BSP_USING_UART2
+    {},
+#endif
+#ifdef BSP_USING_UART3
+    {},
+#endif
+#ifdef BSP_USING_UART4
+    {},
+#endif
+#ifdef BSP_USING_UART5
+    {},
+#endif
+#ifdef BSP_USING_UART6
+    {},
+#endif
+#ifdef BSP_USING_UART7
+    {},
+#endif
+#ifdef BSP_USING_UART8
+    {},
+#endif
+};
+
+static struct ch32_uart_config uart_config[] =
 {
-    USART_InitTypeDef huart;
-    USART_TypeDef *USARTx;
-    IRQn_Type irq;
+#ifdef BSP_USING_UART1
+    {
+        "uart1",
+        USART1,
+        USART1_IRQn,
+    },
+#endif
+#ifdef BSP_USING_UART2
+    {
+        "uart2",
+        USART2,
+        USART2_IRQn,
+    },
+#endif
+#ifdef BSP_USING_UART3
+    {
+        "uart3",
+        USART3,
+        USART3_IRQn,
+    },
+#endif
+#ifdef BSP_USING_UART4
+    {
+        "uart4",
+        UART4,
+        UART4_IRQn,
+    },
+#endif
+#ifdef BSP_USING_UART5
+    {
+        "uart5",
+        UART5,
+        UART5_IRQn,
+    },
+#endif
+#ifdef BSP_USING_UART6
+    {
+        "uart6",
+        UART6,
+        UART6_IRQn,
+    },
+#endif
+#ifdef BSP_USING_UART7
+    {
+        "uart7",
+        UART7,
+        UART7_IRQn,
+    },
+#endif
+#ifdef BSP_USING_UART8
+    {
+        "uart8",
+        UART8,
+        UART8_IRQn,
+    },
+#endif
 };
 
+static struct ch32_uart uart_obj[sizeof(uart_config) / sizeof(uart_config[0])] = {0};
+
 static rt_err_t ch32_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
 {
     struct ch32_uart *uart;
+    GPIO_InitTypeDef GPIO_InitStructure={0};
+
     RT_ASSERT(serial != RT_NULL);
     RT_ASSERT(cfg != RT_NULL);
-    uart = (struct ch32_uart *)serial->parent.user_data;
-    uart->huart.USART_BaudRate             = cfg->baud_rate;
-    uart->huart.USART_HardwareFlowControl  = USART_HardwareFlowControl_None;
-    uart->huart.USART_Mode                 = USART_Mode_Rx|USART_Mode_Tx;
+
+    uart = (struct ch32_uart *) serial->parent.user_data;
+
+    uart->Init.USART_BaudRate             = cfg->baud_rate;
+    uart->Init.USART_HardwareFlowControl  = USART_HardwareFlowControl_None;
+    uart->Init.USART_Mode                 = USART_Mode_Rx|USART_Mode_Tx;
 
     switch (cfg->data_bits)
     {
     case DATA_BITS_8:
-        uart->huart.USART_WordLength = USART_WordLength_8b;
+        uart->Init.USART_WordLength = USART_WordLength_8b;
         break;
     case DATA_BITS_9:
-        uart->huart.USART_WordLength = USART_WordLength_9b;
+        uart->Init.USART_WordLength = USART_WordLength_9b;
         break;
     default:
-        uart->huart.USART_WordLength = USART_WordLength_8b;
+        uart->Init.USART_WordLength = USART_WordLength_8b;
         break;
     }
+
     switch (cfg->stop_bits)
     {
     case STOP_BITS_1:
-        uart->huart.USART_StopBits   = USART_StopBits_1;
+        uart->Init.USART_StopBits   = USART_StopBits_1;
         break;
     case STOP_BITS_2:
-        uart->huart.USART_StopBits   = USART_StopBits_2;
+        uart->Init.USART_StopBits   = USART_StopBits_2;
         break;
     default:
-        uart->huart.USART_StopBits   = USART_StopBits_1;
+        uart->Init.USART_StopBits   = USART_StopBits_1;
         break;
     }
     switch (cfg->parity)
     {
     case PARITY_NONE:
-        uart->huart.USART_Parity    = USART_Parity_No;
+        uart->Init.USART_Parity    = USART_Parity_No;
         break;
     case PARITY_ODD:
-        uart->huart.USART_Parity    = USART_Parity_Odd;
+        uart->Init.USART_Parity    = USART_Parity_Odd;
         break;
     case PARITY_EVEN:
-        uart->huart.USART_Parity    = USART_Parity_Even;
+        uart->Init.USART_Parity    = USART_Parity_Even;
         break;
     default:
-        uart->huart.USART_Parity     = USART_Parity_No;
+        uart->Init.USART_Parity     = USART_Parity_No;
         break;
     }
 
-    if(uart->USARTx == USART1)
-    {
-        GPIO_InitTypeDef GPIO_InitStructure;
-        RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1|RCC_APB2Periph_GPIOA, ENABLE);
-        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
-        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
-        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
-        GPIO_Init(GPIOA, &GPIO_InitStructure);
-        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
-        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
-        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
-        GPIO_Init(GPIOA, &GPIO_InitStructure);
-        USART_Init(uart->USARTx,&uart->huart);
-        USART_Cmd(uart->USARTx, ENABLE);
+    /* UART hardware configuration, including clock and GPIO, etc. */
+    RCC_APB2PeriphClockCmd(uart->hw_config->periph_clock, ENABLE);
+
+    if(uart->hw_config->remap != GPIO_Remap_NONE)
+    {
+        RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
+        GPIO_PinRemapConfig(uart->hw_config->remap, ENABLE);
     }
+    GPIO_InitStructure.GPIO_Pin = uart->hw_config->tx_gpio_pin;
+    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
+    GPIO_Init(uart->hw_config->tx_gpio_port, &GPIO_InitStructure);
+    GPIO_InitStructure.GPIO_Pin = uart->hw_config->rx_gpio_pin;
+    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
+    GPIO_Init(uart->hw_config->rx_gpio_port, &GPIO_InitStructure);
+
+    USART_Init(uart->config->Instance,&uart->Init);
+    USART_Cmd(uart->config->Instance, ENABLE);
 
     return RT_EOK;
 }
@@ -107,16 +240,16 @@ static rt_err_t ch32_control(struct rt_serial_device *serial, int cmd, void *arg
     /* disable interrupt */
     case RT_DEVICE_CTRL_CLR_INT:
         /* disable rx irq */
-        NVIC_DisableIRQ(uart->irq);
+        NVIC_DisableIRQ(uart->config->irq_type);
         /* disable interrupt */
-        USART_ITConfig(uart->USARTx,USART_IT_RXNE,DISABLE);
+        USART_ITConfig(uart->config->Instance,USART_IT_RXNE,DISABLE);
         break;
     /* enable interrupt */
     case RT_DEVICE_CTRL_SET_INT:
         /* enable rx irq */
-        NVIC_EnableIRQ(uart->irq);
+        NVIC_EnableIRQ(uart->config->irq_type);
         /* enable interrupt */
-        USART_ITConfig(uart->USARTx, USART_IT_RXNE,ENABLE);
+        USART_ITConfig(uart->config->Instance, USART_IT_RXNE,ENABLE);
         break;
     }
     return RT_EOK;
@@ -127,8 +260,8 @@ static int ch32_putc(struct rt_serial_device *serial, char c)
     struct ch32_uart *uart;
     RT_ASSERT(serial != RT_NULL);
     uart = (struct ch32_uart *)serial->parent.user_data;
-    while (USART_GetFlagStatus(uart->USARTx, USART_FLAG_TC) == RESET);
-    uart->USARTx->DATAR = c;
+    while (USART_GetFlagStatus(uart->config->Instance, USART_FLAG_TC) == RESET);
+    uart->config->Instance->DATAR = c;
     return 1;
 }
 
@@ -139,33 +272,26 @@ static int ch32_getc(struct rt_serial_device *serial)
     RT_ASSERT(serial != RT_NULL);
     uart = (struct ch32_uart *)serial->parent.user_data;
     ch = -1;
-    if (USART_GetFlagStatus(uart->USARTx, USART_FLAG_RXNE) != RESET)
+    if (USART_GetFlagStatus(uart->config->Instance, USART_FLAG_RXNE) != RESET)
     {
-        ch = uart->USARTx->DATAR & 0xff;
+        ch = uart->config->Instance->DATAR & 0xff;
     }
     return ch;
 }
 
-
 rt_size_t ch32dma_transmit(struct rt_serial_device *serial, rt_uint8_t *buf, rt_size_t size, int direction)
 {
     return RT_EOK;
 }
 
-
-/**
- * Uart common interrupt process. This need add to uart ISR.
- *
- * @param serial serial device
- */
 static void uart_isr(struct rt_serial_device *serial)
 {
     struct ch32_uart *uart = (struct ch32_uart *) serial->parent.user_data;
     RT_ASSERT(uart != RT_NULL);
-    if (USART_GetITStatus(uart->USARTx, USART_IT_RXNE) != RESET)
+    if (USART_GetITStatus(uart->config->Instance, USART_IT_RXNE) != RESET)
     {
         rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
-        USART_ClearITPendingBit(uart->USARTx, USART_IT_RXNE);
+        USART_ClearITPendingBit(uart->config->Instance, USART_IT_RXNE);
     }
 }
 
@@ -178,76 +304,131 @@ static const struct rt_uart_ops ch32_uart_ops =
     ch32dma_transmit
 };
 
-#if defined(BSP_USING_UART1)
-/* UART1 device driver structure */
-struct ch32_uart uart1;
-struct rt_serial_device serial1;
-
-
-
-void USART1_IRQHandler(void) __attribute__((interrupt()));
+#ifdef BSP_USING_UART1
+void USART1_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
 void USART1_IRQHandler(void)
 {
     GET_INT_SP();
-    /* enter interrupt */
     rt_interrupt_enter();
+    uart_isr(&(uart_obj[UART1_INDEX].serial));
+    rt_interrupt_leave();
+    FREE_INT_SP();
+}
+#endif
+
+#ifdef BSP_USING_UART2
+void USART2_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
+void USART2_IRQHandler(void)
+{
+    GET_INT_SP();
+    rt_interrupt_enter();
+    uart_isr(&(uart_obj[UART2_INDEX].serial));
+    rt_interrupt_leave();
+    FREE_INT_SP();
+}
+#endif
 
-    uart_isr(&serial1);
+#ifdef BSP_USING_UART3
+void USART3_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
+void USART3_IRQHandler(void)
+{
+    GET_INT_SP();
+    rt_interrupt_enter();
+    uart_isr(&(uart_obj[UART3_INDEX].serial));
+    rt_interrupt_leave();
+    FREE_INT_SP();
+}
+#endif
 
-    /* leave interrupt */
+#ifdef BSP_USING_UART4
+void UART4_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
+void UART4_IRQHandler(void)
+{
+    GET_INT_SP();
+    rt_interrupt_enter();
+    uart_isr(&(uart_obj[UART4_INDEX].serial));
     rt_interrupt_leave();
+    FREE_INT_SP();
+}
+#endif
 
+#ifdef BSP_USING_UART5
+void UART5_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
+void UART5_IRQHandler(void)
+{
+    GET_INT_SP();
+    rt_interrupt_enter();
+    uart_isr(&(uart_obj[UART5_INDEX].serial));
+    rt_interrupt_leave();
     FREE_INT_SP();
 }
-#endif /* BSP_USING_UART1 */
+#endif
 
+#ifdef BSP_USING_UART6
+void UART6_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
+void UART6_IRQHandler(void)
+{
+    GET_INT_SP();
+    rt_interrupt_enter();
+    uart_isr(&(uart_obj[UART6_INDEX].serial));
+    rt_interrupt_leave();
+    FREE_INT_SP();
+}
+#endif
 
+#ifdef BSP_USING_UART7
+void UART7_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
+void UART7_IRQHandler(void)
+{
+    GET_INT_SP();
+    rt_interrupt_enter();
+    uart_isr(&(uart_obj[UART7_INDEX].serial));
+    rt_interrupt_leave();
+    FREE_INT_SP();
+}
+#endif
 
+#ifdef BSP_USING_UART8
+void UART8_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
+void UART8_IRQHandler(void)
+{
+    GET_INT_SP();
+    rt_interrupt_enter();
+    uart_isr(&(uart_obj[UART8_INDEX].serial));
+    rt_interrupt_leave();
+    FREE_INT_SP();
+}
+#endif
 
 int rt_hw_usart_init(void)
 {
-    struct ch32_uart *uart;
+    rt_size_t obj_num = sizeof(uart_obj) / sizeof(struct ch32_uart);
     struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
+    rt_err_t result = 0;
+
+    for (int i = 0; i < obj_num; i++)
+    {
+        /* init UART object */
+        uart_obj[i].config        = &uart_config[i];
+        uart_obj[i].hw_config     = &uart_hw_config[i];
+        uart_obj[i].serial.ops    = &ch32_uart_ops;
+        uart_obj[i].serial.config = config;
+        /* Hardware initialization is required, otherwise it
+        will not be registered into the device framework */
+        if(uart_obj[i].hw_config->periph_clock == 0)
+        {
+            LOG_E("You did not perform hardware initialization for %s", uart->config->name);
+            continue;
+        }
+        /* register UART device */
+        result = rt_hw_serial_register(&uart_obj[i].serial, uart_obj[i].config->name,
+                                       RT_DEVICE_FLAG_RDWR
+                                       | RT_DEVICE_FLAG_INT_RX
+                                       , &uart_obj[i]);
+        RT_ASSERT(result == RT_EOK);
+    }
 
-#if defined(BSP_USING_UART1)
-    uart=&uart1;
-    uart->irq=USART1_IRQn;
-    uart->USARTx=USART1;
-
-    config.baud_rate = BAUD_RATE_115200;
-    serial1.ops      =  &ch32_uart_ops;
-    serial1.config   =  config;
-
-    uart->huart.USART_BaudRate             = 115200;
-    uart->huart.USART_HardwareFlowControl  = USART_HardwareFlowControl_None;
-    uart->huart.USART_Mode                 = USART_Mode_Rx|USART_Mode_Tx;
-    uart->huart.USART_WordLength           = USART_WordLength_8b;
-    uart->huart.USART_StopBits             = USART_StopBits_1;
-    uart->huart.USART_Parity               = USART_Parity_No;
-
-    if(uart->USARTx == USART1)
-    {
-        GPIO_InitTypeDef GPIO_InitStructure;
-        RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1|RCC_APB2Periph_GPIOA, ENABLE);
-        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
-        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
-        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
-        GPIO_Init(GPIOA, &GPIO_InitStructure);
-        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
-        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
-        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
-        GPIO_Init(GPIOA, &GPIO_InitStructure);
-        USART_Init(uart->USARTx,&uart->huart);
-        USART_Cmd(uart->USARTx, ENABLE);
-   }
-
-    /* register UART1 device */
-    rt_hw_serial_register(&serial1, "uart1",
-                          RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
-                          uart);
-#endif /* BSP_USING_UART1 */
-
-    return 0;
+    return result;
 }
-INIT_BOARD_EXPORT(rt_hw_usart_init);
 
+#endif /* RT_USING_SERIAL */

bsp/wch/risc-v/Libraries/ch32_drivers/drv_usart.h

@@ -5,12 +5,45 @@
  *
  * Change Logs:
  * Date           Author       Notes
- * 2009-01-05     Bernard      the first version
+ * 2022-08-27     liYony       the first version
  */
-#ifndef __USART_H__
-#define __USART_H__
-#include "rthw.h"
-#include "rtthread.h"
+
+#ifndef __DRV_USART_H__
+#define __DRV_USART_H__
+#include <rtthread.h>
+#include "rtdevice.h"
+#include <rthw.h>
+
+/* Do not use GPIO_Remap*/
+#define GPIO_Remap_NONE 0
+
+/* ch32 hardware config class */
+struct ch32_uart_hw_config
+{
+    rt_uint32_t periph_clock;
+    GPIO_TypeDef *tx_gpio_port;
+    rt_uint16_t tx_gpio_pin;
+    GPIO_TypeDef *rx_gpio_port;
+    rt_uint16_t rx_gpio_pin;
+    rt_uint32_t remap;
+};
+
+/* ch32 config class */
+struct ch32_uart_config
+{
+    const char *name;
+    USART_TypeDef *Instance;
+    IRQn_Type irq_type;
+};
+
+/* ch32 uart dirver class */
+struct ch32_uart
+{
+    struct ch32_uart_hw_config *hw_config;
+    struct ch32_uart_config *config;
+    USART_InitTypeDef Init;
+    struct rt_serial_device serial;
+};
 
 int rt_hw_usart_init(void);
 #endif