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STM32F103移值RT-Thread Nano添加控制台与 FinSH标准库程序源码

RT-Thread官方提供的是HAL库的源码，和标准库函数还是有一定区别的，这里我做好了好了标准库下的移值，供有需要的人参考。

 

 

#include "sys.h"

#include "usart.h" #include "rtthread.h"

#define rt_ringbuffer_space_len(rb) ((rb)->buffer_size - rt_ringbuffer_data_len(rb))

struct rt_ringbuffer {     rt_uint8_t *buffer_ptr;

    rt_uint16_t read_mirror : 1;

    rt_uint16_t read_index : 15;     rt_uint16_t write_mirror : 1;     rt_uint16_t write_index : 15;

    rt_int16_t buffer_size;

};

enum rt_ringbuffer_state

{     RT_RINGBUFFER_EMPTY,     RT_RINGBUFFER_FULL,     /* half full is neither full nor empty */     RT_RINGBUFFER_HALFFULL, };

rt_inline enum rt_ringbuffer_state rt_ringbuffer_status(struct rt_ringbuffer *rb)

{     if (rb->read_index == rb->write_index)     {         if (rb->read_mirror == rb->write_mirror)             return RT_RINGBUFFER_EMPTY;         else             return RT_RINGBUFFER_FULL;     }     return RT_RINGBUFFER_HALFFULL; } /**   * get the size of data in rb   */ rt_size_t rt_ringbuffer_data_len(struct rt_ringbuffer *rb) {     switch (rt_ringbuffer_status(rb))     {     case RT_RINGBUFFER_EMPTY:         return 0;     case RT_RINGBUFFER_FULL:         return rb->buffer_size;     case RT_RINGBUFFER_HALFFULL:     default:         if (rb->write_index > rb->read_index)             return rb->write_index - rb->read_index;         else             return rb->buffer_size - (rb->read_index - rb->write_index);     }; }

void rt_ringbuffer_init(struct rt_ringbuffer *rb,

                        rt_uint8_t           *pool,                         rt_int16_t            size) {     RT_ASSERT(rb != RT_NULL);     RT_ASSERT(size > 0);

    /* initialize read and write index */

    rb->read_mirror = rb->read_index = 0;     rb->write_mirror = rb->write_index = 0;

    /* set buffer pool and size */

    rb->buffer_ptr = pool;     rb->buffer_size = RT_ALIGN_DOWN(size, RT_ALIGN_SIZE); }

/**

 * put a character into ring buffer  */ rt_size_t rt_ringbuffer_putchar(struct rt_ringbuffer *rb, const rt_uint8_t ch) {     RT_ASSERT(rb != RT_NULL);

    /* whether has enough space */

    if (!rt_ringbuffer_space_len(rb))         return 0;

    rb->buffer_ptr[rb->write_index] = ch;

    /* flip mirror */

    if (rb->write_index == rb->buffer_size-1)     {         rb->write_mirror = ~rb->write_mirror;         rb->write_index = 0;     }     else     {         rb->write_index++;     }

    return 1;

} /**  * get a character from a ringbuffer  */ rt_size_t rt_ringbuffer_getchar(struct rt_ringbuffer *rb, rt_uint8_t *ch) {     RT_ASSERT(rb != RT_NULL);

    /* ringbuffer is empty */

    if (!rt_ringbuffer_data_len(rb))         return 0;

    /* put character */

    *ch = rb->buffer_ptr[rb->read_index];

    if (rb->read_index == rb->buffer_size-1)

    {         rb->read_mirror = ~rb->read_mirror;         rb->read_index = 0;     }     else     {         rb->read_index++;     }

    return 1;

}  /******************************************************************************* * Function Name  : uart_init * Description    :  * Input          : None * Output         : None * Return         : None *******************************************************************************/  /* 第二部分：finsh 移植对接部分 */ #define UART_RX_BUF_LEN 16 rt_uint8_t uart_rx_buf[UART_RX_BUF_LEN] = {0}; struct rt_ringbuffer  uart_rxcb;         /* 定义一个 ringbuffer cb */ //static UART_HandleTypeDef UartHandle; static struct rt_semaphore shell_rx_sem; /* 定义一个静态信号量 */

void USART1_Init(u32 bound)

{   GPIO_InitTypeDef GPIO_InitStructure;     USART_InitTypeDef USART_InitStructure;     NVIC_InitTypeDef NVIC_InitStructure;          /* 初始化串口接收 ringbuffer  */     rt_ringbuffer_init(&uart_rxcb, uart_rx_buf, UART_RX_BUF_LEN);

    /* 初始化串口接收数据的信号量 */

    rt_sem_init(&(shell_rx_sem), "shell_rx", 0, 0);          RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1|RCC_APB2Periph_GPIOA, ENABLE);    //使能USART1，GPIOA时钟        //USART1_TX   GPIOA.9   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; //PA.9   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;    //复用推挽输出   GPIO_Init(GPIOA, &GPIO_InitStructure);//初始化GPIOA.9       //USART1_RX      GPIOA.10初始化   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;//PA10   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;//浮空输入   GPIO_Init(GPIOA, &GPIO_InitStructure);//初始化GPIOA.10  

  //Usart1 NVIC 配置

  NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;     NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3 ;//抢占优先级3     NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;        //子优先级3     NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;            //IRQ通道使能     NVIC_Init(&NVIC_InitStructure);    //根据指定的参数初始化VIC寄存器        USART_InitStructure.USART_BaudRate = bound;//串口波特率     USART_InitStructure.USART_WordLength = USART_WordLength_8b;//字长为8位数据格式     USART_InitStructure.USART_StopBits = USART_StopBits_1;//一个停止位     USART_InitStructure.USART_Parity = USART_Parity_No;//无奇偶校验位     USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//无硬件数据流控制     USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;    //收发模式

  USART_Init(USART1, &USART_InitStructure); //初始化串口1

  USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);//开启串口接受中断   USART_Cmd(USART1, ENABLE);                    //使能串口1  } /******************************************************************************* * Function Name  : uart_send_byte * Description    :  * Input          : None * Output         : None * Return         : None *******************************************************************************/ void uart_send_byte(u8 data) {     while((USART1->SR & 0X40) == 0);     USART1->DR = data; } /* 移植控制台，实现控制台输出, 对接 rt_hw_console_output */ void rt_hw_console_output(const char *str) {     rt_size_t i = 0, size = 0;     char a = '\r';

    size = rt_strlen(str);

    for (i = 0; i < size; i++)     {         if (*(str + i) == '\n')         {                     uart_send_byte(a);         }                 uart_send_byte(str[i]);     } } /* 移植 FinSH，实现命令行交互, 需要添加 FinSH 源码，然后再对接 rt_hw_console_getchar */ /* 中断方式 */ char rt_hw_console_getchar(void) {     char ch = 0;     /* 从 ringbuffer 中拿出数据 */     while (rt_ringbuffer_getchar(&uart_rxcb, (rt_uint8_t *)&ch) != 1)     {         rt_sem_take(&shell_rx_sem, RT_WAITING_FOREVER);     }      return ch;    }     

/*******************************************************************************

* Function Name  : USART1_IRQHandler * Description    :  * Input          : None * Output         : None * Return         : None *******************************************************************************/ void USART1_IRQHandler(void) {         int ch = -1;     /* enter interrupt */     rt_interrupt_enter();          //在中断中一定要调用这对函数，进入中断

    if ((USART_GetFlagStatus(USART1, USART_FLAG_RXNE) != RESET) &&

        (USART_GetITStatus(USART1, USART_IT_RXNE) != RESET))     {         while (1)         {             ch = -1;             if (USART_GetFlagStatus(USART1, USART_FLAG_RXNE) != RESET)             {                 ch =  USART1->DR & 0xff;             }             if (ch == -1)             {                 break;             }               /* 读取到数据，将数据存入 ringbuffer */             rt_ringbuffer_putchar(&uart_rxcb, ch);         }                 rt_sem_release(&shell_rx_sem);     }     /* leave interrupt */     rt_interrupt_leave();    //在中断中一定要调用这对函数，离开中断 }

然后在board.c文件中的void rt_hw_board_init()函数里调用串口初始化函数。

然后编译下载，移值成功。