Steven Kay / SerialComms

UART Driver to receive asynchronous Serial Comms from a Raspberry Pi and parse the results.

SerialComms.cpp@5:d497795761a5, 2016-02-20 (annotated)

Committer:
sk398
Date:
Sat Feb 20 13:33:32 2016 +0000
Revision:
5:d497795761a5
Parent:
4:85353bd571f2 
zxzxzc

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sk398 0:8ac1280934b4 1 #include "mbed.h"
sk398 0:8ac1280934b4 2 #include "SerialComms.h"
sk398 0:8ac1280934b4 3
sk398 1:bf3fb80028d8 4 SerialComms::SerialComms(PinName tx,PinName rx)
sk398 0:8ac1280934b4 5 {
sk398 3:b608ee5b9b5d 6 _HLC_Conn = new RawSerial(tx,rx);
sk398 0:8ac1280934b4 7 _HLC_Conn-> baud(SERIAL_BAUD_RATE);
sk398 0:8ac1280934b4 8 _HLC_Conn -> format(8,SerialBase::None,1);
sk398 0:8ac1280934b4 9
sk398 3:b608ee5b9b5d 10 _HLC_Conn -> attach(this,&SerialComms::incomingDataISR,RawSerial::RxIrq);
sk398 0:8ac1280934b4 11 }
sk398 0:8ac1280934b4 12
sk398 0:8ac1280934b4 13
sk398 2:cb74b330b285 14 void SerialComms::incomingDataISR()
sk398 0:8ac1280934b4 15 {
sk398 0:8ac1280934b4 16 int a = 0;
sk398 2:cb74b330b285 17 dataCheck = 0;
sk398 0:8ac1280934b4 18 for(uint8_t charCount=0; charCount<(2*NUM_BYTES_RECEIVING); charCount++)
sk398 0:8ac1280934b4 19 {
sk398 0:8ac1280934b4 20 if((charCount%2) == 1)
sk398 0:8ac1280934b4 21 {
sk398 0:8ac1280934b4 22 receiverBuffer[a] = _HLC_Conn -> getc();
sk398 0:8ac1280934b4 23 a++;
sk398 0:8ac1280934b4 24 }
sk398 0:8ac1280934b4 25 else
sk398 0:8ac1280934b4 26 {
sk398 2:cb74b330b285 27 dataCheck += _HLC_Conn -> getc();
sk398 0:8ac1280934b4 28 }
sk398 0:8ac1280934b4 29 }
sk398 2:cb74b330b285 30 incomingDataUpdate = TRUE;
sk398 0:8ac1280934b4 31 }
sk398 0:8ac1280934b4 32
sk398 4:85353bd571f2 33 int *SerialComms::returnCommData()
sk398 0:8ac1280934b4 34 {
sk398 4:85353bd571f2 35 if(SerialComms::incomingDataUpdate == TRUE && dataCheck == 15)
sk398 0:8ac1280934b4 36 {
sk398 2:cb74b330b285 37 SerialComms::incomingDataUpdate = FALSE;
sk398 0:8ac1280934b4 38 return receiverBuffer;
sk398 0:8ac1280934b4 39 }
sk398 0:8ac1280934b4 40 else
sk398 0:8ac1280934b4 41 {
sk398 0:8ac1280934b4 42 int noNewData = -1;
sk398 0:8ac1280934b4 43 int *noNewDataPtr = &noNewData;
sk398 0:8ac1280934b4 44 return noNewDataPtr;
sk398 0:8ac1280934b4 45 }
sk398 0:8ac1280934b4 46 }