apm32串口发送字符串总结

最近在弄apm32,在弄串口发送接收字符串，之前在实习的时候弄过GD32,有点基础，要操作寄存器标志位，所用的库函数不大一样，方法是相同的。主要代码如下：

	
	for(i = 0; i < sizeof(txBuf); i++)
        {
            while(USART_ReadFlag(USART2, USART_FLAG_TXBE) == RESET);
            USART_TxData(USART2, txBuf[i]);				
        }
		

其余就是USART串口配置代码了，如下：

GPIO_ConfigStruct_T GPIO_ConfigStruct;
        USART_ConfigStruct_T USART_ConfigStruct;

        RCM_EnableAPB1PeriphClock((RCM_APB1_PERIPH_T)(RCM_APB1_PERIPH_USART2));
        RCM_EnableAPB2PeriphClock(
            (RCM_APB2_PERIPH_T)(RCM_APB2_PERIPH_GPIOA | RCM_APB2_PERIPH_AFIO));

        GPIO_ConfigStruct.mode = GPIO_MODE_AF_PP;
        GPIO_ConfigStruct.pin = GPIO_PIN_2;
        GPIO_ConfigStruct.speed = GPIO_SPEED_50MHz;
        GPIO_Config(GPIOA, &GPIO_ConfigStruct);

        GPIO_ConfigStruct.mode = GPIO_MODE_IN_FLOATING;
        GPIO_ConfigStruct.pin = GPIO_PIN_3;
        GPIO_ConfigStruct.speed = GPIO_SPEED_50MHz;
        GPIO_Config(GPIOA, &GPIO_ConfigStruct);

        USART_ConfigStruct.baudRate = 115200;
        USART_ConfigStruct.hardwareFlowCtrl = USART_FLOW_CTRL_NONE;
        USART_ConfigStruct.mode = USART_MODE_TX_RX;
        USART_ConfigStruct.parity = USART_PARITY_NONE;
        USART_ConfigStruct.stopBits = USART_STOP_BIT_1;
        USART_ConfigStruct.wordLength = USART_WORD_LEN_8B;
        USART_Config(USART2, &USART_ConfigStruct);

        USART_Enable(USART2);

完整代码如下：

/*!
 * @file        main.c
 *
 * @brief       Main program body
 *
 * @version     V1.0.1
 *
 * @date        2021-03-23
 *
 */
#include "main.h"
#include "apm32f10x_gpio.h"
#include "apm32f10x_usart.h"
#include "apm32f10x_rcm.h"

#include <rtthread.h>
#include <rthw.h>

#ifdef RT_USING_MODULE
#include <dlmodule.h>
#endif

volatile uint32_t tick = 0;
uint8_t txBuf[] = "Hello USART2 \r\n";

/*!
 * @brief       Main program   
 *
 * @param       None
 *
 * @retval      None
 *
 */
int main(void)
{
        uint8_t i;  
		    GPIO_ConfigStruct_T GPIO_ConfigStruct;
        USART_ConfigStruct_T USART_ConfigStruct;

        RCM_EnableAPB1PeriphClock((RCM_APB1_PERIPH_T)(RCM_APB1_PERIPH_USART2));
        RCM_EnableAPB2PeriphClock(
            (RCM_APB2_PERIPH_T)(RCM_APB2_PERIPH_GPIOA | RCM_APB2_PERIPH_AFIO));

        GPIO_ConfigStruct.mode = GPIO_MODE_AF_PP;
        GPIO_ConfigStruct.pin = GPIO_PIN_2;
        GPIO_ConfigStruct.speed = GPIO_SPEED_50MHz;
        GPIO_Config(GPIOA, &GPIO_ConfigStruct);

        GPIO_ConfigStruct.mode = GPIO_MODE_IN_FLOATING;
        GPIO_ConfigStruct.pin = GPIO_PIN_3;
        GPIO_ConfigStruct.speed = GPIO_SPEED_50MHz;
        GPIO_Config(GPIOA, &GPIO_ConfigStruct);

        USART_ConfigStruct.baudRate = 115200;
        USART_ConfigStruct.hardwareFlowCtrl = USART_FLOW_CTRL_NONE;
        USART_ConfigStruct.mode = USART_MODE_TX_RX;
        USART_ConfigStruct.parity = USART_PARITY_NONE;
        USART_ConfigStruct.stopBits = USART_STOP_BIT_1;
        USART_ConfigStruct.wordLength = USART_WORD_LEN_8B;
        USART_Config(USART2, &USART_ConfigStruct);

        USART_Enable(USART2);
    
    while(1)
    {	
	for(i = 0; i < sizeof(txBuf); i++)
        {
            while(USART_ReadFlag(USART2, USART_FLAG_TXBE) == RESET);
            USART_TxData(USART2, txBuf[i]);			
        }
			}
}
		

版权声明：本文为CSDN博主「朝朝暮暮柳十岁」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/weixin_42952472/article/details/122511067