INT16U mems_uart_send(INT8U *buf, INT16U len)
{
P_MSG_INFO pMsg = NULL;
if((NULL == buf) || (0 == len))
{
return (FALSE);
}
if(!(pMsg = (P_MSG_INFO)alloc_send_buffer(MSG_SHORT)))
{
return (FALSE);
}
memcpy(pMsg->msg_buffer, buf, len);
pMsg->msg_header.msg_len = len;
pMsg->msg_header.end_id = MEMS_COM_PORT;
pMsg->msg_header.need_buffer_free = TRUE;
return (End_send(pMsg));
}
/***********************************************************
Tick任务调用，检查每个END接口是否有新的frame收完
************************************************************/
unsigned short End_tick_check(void)
{
OS_CPU_SR cpu_sr;
unsigned char i;
U16 cp_len, msg_len;
P_END_OBJ pEndObj = NULL;
P_MSG_INFO pnewmsg = NULL;
P_UART_CCB p_uc;
for(i = START_COM_PORT; i < MAX_COM_PORT; i++ )
{
/////////////////////////////
pEndObj = g_EndObjectPool + i;
p_uc = &g_uart_ccb[i];
if(pEndObj->end_send_status == END_STATUS_SENDING)
{
/* 检查当前对象是否发送完毕. 完毕的话, 转接收, 或者转空闲*/
if( End_check_send(pEndObj->end_id) == TRUE )
{
//Send 已经结束， 转到receive status 初始状态
pEndObj->end_send_status = END_STATUS_IDLE;
pnewmsg = (P_MSG_INFO)pEndObj->pMsgInfo;
pnewmsg->msg_header.block_state = SENDED;
// alan dynamic sending buffer.
// 当前end sending 正常结束，可以直接释放sending buffer
if( pnewmsg->msg_header.need_buffer_free == TRUE) /* 不需要保留到上层application 进行释放*/
{
free_send_buffer(pnewmsg);
}
}
}
else
{
if( NULL != (pnewmsg = dequeue( g_EndTxQueue[pEndObj->end_id])) )
{
End_send(pnewmsg);
}
}
if( End_check_recv(pEndObj) == TRUE ) /* 没有新数据到来, 开始处理*/
{
#if 0
// 将内存数据copy 出来, 压入queue 进行后续处理
if(pEndObj->receive_len >= MSA_MESSAGAE_MAX_SIZE)
pnewmsg = alloc_send_buffer(MSG_LARGE);
else if(pEndObj->receive_len >= PLC_BUFFER_UART_SIZE)
pnewmsg = alloc_send_buffer(MSG_LONG);
else
pnewmsg = alloc_send_buffer(MSG_SHORT);
#else
pnewmsg = alloc_send_buffer(MSG_SHORT);
#endif
if(pnewmsg == NULL)
{
continue;
}
msg_len = pEndObj->receive_len;
pnewmsg->msg_header.msg_len = msg_len;
pnewmsg->msg_header.end_id = i;
OS_ENTER_CRITICAL();
cp_len = (U16)(p_uc->gpUartRxEndAddress - p_uc->gpUartRxReadAddress);
if(cp_len >= msg_len)
{
//OS_ENTER_CRITICAL();
memcpy(pnewmsg->msg_buffer, p_uc->gpUartRxReadAddress, msg_len );
p_uc->gpUartRxReadAddress += msg_len;
if(p_uc->gpUartRxReadAddress == p_uc->gpUartRxEndAddress)
p_uc->gpUartRxReadAddress = p_uc->gpUartRxStartAddress;
//OS_EXIT_CRITICAL();
}
else
{
//OS_ENTER_CRITICAL();
memcpy(pnewmsg->msg_buffer, p_uc->gpUartRxReadAddress, cp_len);
memcpy((pnewmsg->msg_buffer + cp_len), p_uc->gpUartRxStartAddress, (msg_len-cp_len));
p_uc->gpUartRxReadAddress = p_uc->gpUartRxStartAddress + (msg_len-cp_len);
//OS_EXIT_CRITICAL();
}
OS_EXIT_CRITICAL();
pEndObj->last_receive_len = 0;
pEndObj->receive_len = 0;
pEndObj->endStatistics.rxPacketCount++;
/* 将数据挂在queue 里*/
if(enqueue(g_EndRxQueue[pEndObj->end_id], (P_MSG_INFO)(pnewmsg)))
{
// 发送UART Rx 处理事件量
OSSemPost(g_sem_end);
}
else
{
free_send_buffer(pnewmsg);
}
}
}
return TRUE;
}