mirror of
https://gitee.com/Lyon1998/pikapython.git
synced 2025-01-22 17:12:55 +08:00
75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
|
||
#include <stdio.h>
|
||
#include <string.h>
|
||
#include "wm_hal.h"
|
||
#include "fifo.h"
|
||
|
||
UART_HandleTypeDef huart1;
|
||
|
||
static void UART1_Init(void);
|
||
void Error_Handler(void);
|
||
|
||
#define IT_LEN 0 // 大于等于0，0：接收不定长数据即可触发中断回调；大于0：接收N个长度数据才触发中断回调
|
||
static uint8_t buf[32] = {0}; // 必须大于等于32字节
|
||
#define LEN 2048
|
||
static uint8_t pdata[LEN] = {0};
|
||
int main(void)
|
||
{
|
||
volatile int tx_len = 0;
|
||
uint8_t tx_buf[100] = {0};
|
||
|
||
SystemClock_Config(CPU_CLK_160M);
|
||
printf("enter main\r\n");
|
||
|
||
UART1_Init();
|
||
FifoInit(pdata, LEN);
|
||
HAL_UART_Receive_IT(&huart1, buf, IT_LEN); // 只需调用一次，接收够设定的长度，进入中断回调，用户需要在中断回调中取走数据，此处设置了
|
||
// 0个字节，即不定长
|
||
while(1)
|
||
{
|
||
tx_len = FifoDataLen();
|
||
if (tx_len > 0)
|
||
{
|
||
tx_len = (tx_len > 100) ? 100 : tx_len;
|
||
FifoRead(tx_buf, tx_len);
|
||
HAL_UART_Transmit(&huart1, tx_buf, tx_len, 1000);
|
||
}
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
static void UART1_Init(void)
|
||
{
|
||
huart1.Instance = UART1;
|
||
huart1.Init.BaudRate = 115200;
|
||
huart1.Init.WordLength = UART_WORDLENGTH_8B;
|
||
huart1.Init.StopBits = UART_STOPBITS_1;
|
||
huart1.Init.Parity = UART_PARITY_NONE;
|
||
huart1.Init.Mode = UART_MODE_TX | UART_MODE_RX;
|
||
huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
|
||
if (HAL_UART_Init(&huart1) != HAL_OK)
|
||
{
|
||
Error_Handler();
|
||
}
|
||
}
|
||
|
||
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
|
||
{
|
||
if (FifoSpaceLen() >= huart->RxXferCount)
|
||
{
|
||
FifoWrite(huart->pRxBuffPtr, huart->RxXferCount);
|
||
}
|
||
}
|
||
|
||
void Error_Handler(void)
|
||
{
|
||
while (1)
|
||
{
|
||
}
|
||
}
|
||
|
||
void assert_failed(uint8_t *file, uint32_t line)
|
||
{
|
||
printf("Wrong parameters value: file %s on line %d\r\n", file, line);
|
||
} |