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发表于2023-5-27 17:24 只看该作者

【极海APM32F407 Tiny Board】跑个串口例子USART_Polling [复制链接]

本帖最后由 damiaa 于 2023-5-27 19:25 编辑

【极海APM32F407 Tiny Board】跑个串口例子USART_Polling

1，找到...\APM32F4xx_SDK_v1.3\Examples\USART\USART_Polling

2,修改预处理符号APM32F407_MINI为APM32F407_TINY

3,修改一下，适用TINY板子代码如下：

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void delayXms(uint32_t x)
{
	for(uint32_t i=0;i<10000;i++){
		for(uint32_t j=0;j<x;j++){}
	}
}
int main(void)
{
    BOOL state = TRUE;
    for(int i = 0; i < DATA_BUF_SIZE; i++){
        txDataBufUSART1[i] = i;
        txDataBufUSART2[i] = i;
    }
    APM_TINY_LEDInit(LED2);  APM_TINY_LEDInit(LED3);
    USART_Init();
		while(1)
		{
				/** Send Data from USART1 to USART2 */
				for(int i = 0; i < DATA_BUF_SIZE; i++){
						/** Wait until end of transmission */
						while(USART_ReadStatusFlag(TINY_COM1, USART_FLAG_TXBE) == RESET);
						USART_TxData(TINY_COM1, txDataBufUSART1[i]);
						/** Wait until end of reception */
						while(USART_ReadStatusFlag(TINY_COM2, USART_FLAG_RXBNE) == RESET);
						rxDataBufUSART2[i] = USART_RxData(TINY_COM2);
				}
				 /** Verify data */
				state = BufferCompare(rxDataBufUSART2, txDataBufUSART1, DATA_BUF_SIZE);
				/** Data is ok then turn off LED2 */
				if(state == TRUE){		APM_TINY_LEDOn(LED2);}
				/** Send Data from USART2 to USART1 */
				for(int i = 0; i < DATA_BUF_SIZE; i++){
						/** Wait until end of transmission */
						while(USART_ReadStatusFlag(TINY_COM2, USART_FLAG_TXBE) == RESET);
						USART_TxData(TINY_COM2, txDataBufUSART2[i]);
						/** Wait until end of reception */
						while(USART_ReadStatusFlag(TINY_COM1, USART_FLAG_RXBNE) == RESET);
						rxDataBufUSART1[i] = USART_RxData(TINY_COM1);
				}
				 /** Verify data */
				state = BufferCompare(rxDataBufUSART1, txDataBufUSART2, DATA_BUF_SIZE);
				/** Data is ok then turn off LED2 */
				if(state == TRUE){		APM_TINY_LEDOn(LED3);}
				delayXms(1000);   APM_TINY_LEDOff(LED2);   APM_TINY_LEDOff(LED3);   delayXms(1000);			
		}
}