Steven Kay / SerialComms

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

SerialComms.cpp@0:8ac1280934b4, 2016-02-15 (annotated)

Committer:
sk398
Date:
Mon Feb 15 19:49:37 2016 +0000
Revision:
0:8ac1280934b4
Child:
1:bf3fb80028d8
Initial version operational.; ; Using Serial data type passed

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 0:8ac1280934b4 4 SerialComms::SerialComms(Serial *HLC_Conn)
sk398 0:8ac1280934b4 5 {
sk398 0:8ac1280934b4 6 _HLC_Conn = HLC_Conn;
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 0:8ac1280934b4 10 _HLC_Conn -> attach(this,&SerialComms::incoming,Serial::RxIrq);
sk398 0:8ac1280934b4 11
sk398 0:8ac1280934b4 12 dataUpdate = FALSE;
sk398 0:8ac1280934b4 13 }
sk398 0:8ac1280934b4 14
sk398 0:8ac1280934b4 15
sk398 0:8ac1280934b4 16 void SerialComms::incoming()
sk398 0:8ac1280934b4 17 {
sk398 0:8ac1280934b4 18 int a = 0;
sk398 0:8ac1280934b4 19 for(uint8_t charCount=0; charCount<(2*NUM_BYTES_RECEIVING); charCount++)
sk398 0:8ac1280934b4 20 {
sk398 0:8ac1280934b4 21 if((charCount%2) == 1)
sk398 0:8ac1280934b4 22 {
sk398 0:8ac1280934b4 23 receiverBuffer[a] = _HLC_Conn -> getc();
sk398 0:8ac1280934b4 24 a++;
sk398 0:8ac1280934b4 25 }
sk398 0:8ac1280934b4 26 else
sk398 0:8ac1280934b4 27 {
sk398 0:8ac1280934b4 28 _HLC_Conn -> getc();
sk398 0:8ac1280934b4 29 }
sk398 0:8ac1280934b4 30 }
sk398 0:8ac1280934b4 31 dataUpdate = TRUE;
sk398 0:8ac1280934b4 32
sk398 0:8ac1280934b4 33 // for(int c = 0; c < 4; c++)
sk398 0:8ac1280934b4 34 // {
sk398 0:8ac1280934b4 35 // printf("recieved: %d\r\n",receiverBuffer[c]);
sk398 0:8ac1280934b4 36 // }
sk398 0:8ac1280934b4 37 }
sk398 0:8ac1280934b4 38
sk398 0:8ac1280934b4 39 int *SerialComms::returnMotorSpeeds()
sk398 0:8ac1280934b4 40 {
sk398 0:8ac1280934b4 41 if(SerialComms::dataUpdate == TRUE)
sk398 0:8ac1280934b4 42 {
sk398 0:8ac1280934b4 43 SerialComms::dataUpdate = FALSE;
sk398 0:8ac1280934b4 44 return receiverBuffer;
sk398 0:8ac1280934b4 45 }
sk398 0:8ac1280934b4 46 else
sk398 0:8ac1280934b4 47 {
sk398 0:8ac1280934b4 48 int noNewData = -1;
sk398 0:8ac1280934b4 49 int *noNewDataPtr = &noNewData;
sk398 0:8ac1280934b4 50 return noNewDataPtr;
sk398 0:8ac1280934b4 51 }
sk398 0:8ac1280934b4 52 }