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加快can的报文处理实时性

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NeoZng
2023-07-11 16:16:19 +08:00
parent 2404edd4eb
commit df66794bf9
3 changed files with 16 additions and 14 deletions
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24
bsp/can/bsp_can.c
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@@ -150,19 +150,21 @@ static void CANFIFOxCallback(CAN_HandleTypeDef *_hcan, uint32_t fifox)
{
static CAN_RxHeaderTypeDef rxconf; // 同上
uint8_t can_rx_buff[8];
HAL_CAN_GetRxMessage(_hcan, fifox, &rxconf, can_rx_buff); // 从FIFO中获取数据
for (size_t i = 0; i < idx; ++i)
{ // 两者相等说明这是要找的实例
if (_hcan == can_instance[i]->can_handle && rxconf.StdId == can_instance[i]->rx_id)
{
if (can_instance[i]->can_module_callback != NULL) // 回调函数不为空就调用
while (HAL_CAN_GetRxFifoFillLevel(_hcan, fifox)) // FIFO不为空,有可能在其他中断时有多帧数据进入
{
HAL_CAN_GetRxMessage(_hcan, fifox, &rxconf, can_rx_buff); // 从FIFO中获取数据
for (size_t i = 0; i < idx; ++i)
{ // 两者相等说明这是要找的实例
if (_hcan == can_instance[i]->can_handle && rxconf.StdId == can_instance[i]->rx_id)
{
can_instance[i]->rx_len = rxconf.DLC; // 保存接收到的数据长度
memcpy(can_instance[i]->rx_buff, can_rx_buff, rxconf.DLC); // 消息拷贝到对应实例
can_instance[i]->can_module_callback(can_instance[i]); // 触发回调进行数据解析和处理
if (can_instance[i]->can_module_callback != NULL) // 回调函数不为空就调用
{
can_instance[i]->rx_len = rxconf.DLC; // 保存接收到的数据长度
memcpy(can_instance[i]->rx_buff, can_rx_buff, rxconf.DLC); // 消息拷贝到对应实例
can_instance[i]->can_module_callback(can_instance[i]); // 触发回调进行数据解析和处理
}
return;
}
return;
}
}
}