利用这个配置配置完之后 帮我写一个can收发的程序
时间: 2024-03-16 12:46:50 浏览: 17
好的,以下是一个基于Processor Expert生成的代码的CAN收发程序,供参考:
```c
#include "S32K144.h"
#include "FlexCAN.h"
flexcan_instance_t can_instance = {
.instance = 0,
.bus_clk = 8000000U,
.rx_pin = 9U,
.tx_pin = 10U,
.rx_mode = FLEXCAN_RX_FIFO,
.tx_mode = FLEXCAN_TX_POLLING,
.rx_fifo_id_start = 0,
.rx_mb_num = 16,
.tx_mb_num = 0,
};
void CAN_Init(void)
{
FLEXCAN_DRV_Init(&can_instance, NULL);
// 设置CAN过滤器
flexcan_msgbuff_t msgBuff;
msgBuff.cs = (FLEXCAN_MSG_CS_CODE(FLEXCAN_MB_CS_CODE_RX_INACTIVE) | FLEXCAN_MSG_CS_IDE_MASK);
msgBuff.id = FLEXCAN_MSG_ID_STD(0x123);
FLEXCAN_DRV_ConfigRxMb(&can_instance, 0, &msgBuff);
// 启用CAN模块
FLEXCAN_DRV_SetMode(&can_instance, FLEXCAN_NORMAL_MODE);
}
void CAN_Send(uint32_t id, uint8_t *data, uint8_t len)
{
flexcan_msgbuff_t msgBuff;
msgBuff.cs = FLEXCAN_MSG_CS_CODE(FLEXCAN_MB_CS_CODE_TX_DATA) | FLEXCAN_MSG_CS_DLC(len);
msgBuff.id = FLEXCAN_MSG_ID_STD(id);
for (uint8_t i = 0; i < len; i++)
{
msgBuff.data[i] = data[i];
}
FLEXCAN_DRV_SendBlocking(&can_instance, 0, &msgBuff);
}
void CAN_Receive(void)
{
flexcan_msgbuff_t msgBuff;
if (FLEXCAN_DRV_RxMessageBlocking(&can_instance, 0, &msgBuff) == STATUS_SUCCESS)
{
// 处理接收到的数据
}
}
int main(void)
{
uint8_t data[8] = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08};
CAN_Init();
while (1)
{
CAN_Send(0x123, data, 8);
CAN_Receive();
}
}
```
以上代码中,CAN_Init()函数用于初始化CAN组件并配置过滤器,CAN_Send()函数用于发送CAN数据,CAN_Receive()函数用于接收CAN数据。需要注意的是,以上代码仅为示例,实际使用中需要根据自己的需要进行修改。