Serial.c

00001 #include "System.h"
00002 
00003 ByteQueue PCBackDoorTx,PCBackDoorRx;
00004 BYTE PCBackDoorTx_Queue_Storage[PC_BACKDOOR_TX_QUEUE_SIZE];
00005 BYTE PCBackDoorRx_Queue_Storage[PC_BACKDOOR_RX_QUEUE_SIZE];
00006 
00007 Serial PCBackDoor(USBTX, USBRX); 
00008 Ticker PCBackDoorTxQueueCheck;
00009 
00010 //IRQ for when data is received
00011 void PCBackDoorRxIRQ();
00012 void PCBackDoorMoveTxQueue();
00013 
00014 void InitPCBackDoor()
00015 {
00016     InitByteQueue(&PCBackDoorTx,PC_BACKDOOR_TX_QUEUE_SIZE,&PCBackDoorTx_Queue_Storage[0]);
00017     InitByteQueue(&PCBackDoorRx,PC_BACKDOOR_RX_QUEUE_SIZE,&PCBackDoorRx_Queue_Storage[0]);
00018     
00019     PCBackDoor.baud(57600);
00020     PCBackDoor.format(8,Serial::None,1);  
00021  
00022     
00023     //The Rx IRQ wil fill up my big software Rx Queue
00024     PCBackDoor.attach(&PCBackDoorRxIRQ);
00025     
00026     //Periodicically check my outgoing Tx Queue (every 1 mS)
00027    PCBackDoorTxQueueCheck.attach_us(&PCBackDoorMoveTxQueue,500);
00028 }
00029 
00030 void PCBackDoorMoveTxQueue()
00031 {
00032     BYTE Temp;
00033     
00034     while(PCBackDoor.writeable())
00035     {
00036         if(BytesInQueue(&PCBackDoorTx) == 0)
00037         {
00038             break;
00039         }
00040         else
00041         {
00042             ByteDequeue(&PCBackDoorTx,&Temp);
00043             PCBackDoor.putc(Temp);
00044         }
00045     }
00046  
00047 }
00048 
00049 void PCBackDoorRxIRQ()
00050 {
00051    while(PCBackDoor.readable())
00052     {
00053          ByteEnqueue(&PCBackDoorRx,(BYTE)PCBackDoor.getc());   
00054     }
00055 }