File content as of revision 0:a355e511bc5d:

#include "mbed.h"
#include "WatchdogThread.h"
#include "ui.h"

Serial bluetooth(p9,p10); // Define the bluetooth channel and IO pins
Serial pc(USBTX, USBRX); // Pins (tx, rx) for PC serial channel

Mutex setpoint_mutex;

// speed
int setpoint;

// variable to store character recieved from terminal
char x;

extern uint16_t dPosition, dTime;

uint16_t position;

/******************************************************************************
            A function to test blutooth communication
******************************************************************************/
void twoTerminalsTest()
{
    if (pc.readable()) { // If a key is pressed on the pc channel
        x=pc.getc(); // read the character and send it to both the
        bluetooth.putc(x); // bluetooth channel and the pc channel for
        pc.putc(x); // display.
    }
    if (bluetooth.readable()) {
        x=bluetooth.getc(); // If there’s a keypress on the bluetooth
        pc.putc(x); // channel, read the character and send it to
        bluetooth.putc(x); // both the pc channel and the bluetooth
    } // channel for display
}


/******************************************************************************
            A function to Display startup Messsage
******************************************************************************/
void displayStartupMsg()
{
    pc.printf("\r\n************************************");
    pc.printf("\r\n**** DC Motor Control using PWM ****");
    pc.printf("\r\n************************************");
    pc.printf("\r\n-Enter r to reset the watchdog timer");
    pc.printf("\r\n-press w to increase motor speed");
    pc.printf("\r\n-press s to decrease motor speed");
}


/******************************************************************************
                            Console interface
******************************************************************************/
void consoleUI(void)
{
    if (pc.readable()) {
        x = pc.getc();

        // if input from console is the letter 'r'
        if(x == 'r') {
            // reset watchdog timer
            WatchdogReset();
            pc.printf("\r\nWatchdog has been reset");
        }

        // if w is pressed increase the speed
        // by incrementing u
        else if(x == 'w') {
            // convert to integer
            if(setpoint<=10000) {
                setpoint_mutex.lock();
                setpoint = setpoint + SPEED_STEP;
                setpoint_mutex.unlock();
            }
            // display speed
            pc.printf("\r\n %5d", setpoint);
        }

        // if s is pressed decrease the speed
        // by decrementing u
        else if(x == 's') {
            // convert to integer
            if(setpoint>-10000) {
                setpoint_mutex.lock();
                setpoint = setpoint - SPEED_STEP;
                setpoint_mutex.unlock();
            }
            // display speed
            pc.printf("\r\n %5d", setpoint);
        }

        // error wrong input
        else {
            pc.printf("\r\nwrong input please enter \'w\' to increase the speed, \'s\' to reduce it or move in the opposite direction and \'r\' to reset the watchdog");
        }
    }
    position += dPosition;
    pc.printf("\r\nposition: %d, dPosition: %d, dTime: %d", position, dPosition, dTime);
    
}