File content as of revision 0:703249a56b9d:

#include "mbed.h"
#include "DO/DO.h"
#include "MO/MO.h"
#include "rtos.h"
#include "config.h"


DigitalOut led1(LED1);
DigitalOut led2(LED2);
DigitalOut led3(LED3);

DigitalOut out(PIN_OUT);
InterruptIn in(PIN_IN);

Serial pc(USBTX,USBRX);


Thread sendCharThread;
Thread receiveBitThread;

Ticker ticker;
Mutex mux;
Timer timer;


Mail<char,16> mailBoxReception;
Mail<char,16> mailBoxEnvoi;
Queue <void,16> queueBitReception;


//MODULATION
void sendChar()
{
    while(1) {
        osEvent evt = mailBoxEnvoi.get();
        if(evt.status == osEventMail) {

            char* c = (char*)evt.value.p;
            for(int i =0 ; i<8 ; i++) {
                if(((*c>>7-i)&0x01)==1) {
                    out = 1;
                    Thread::signal_wait(0x01);
                    out = 0;
                    Thread::signal_wait(0x01);
                } else {
                    out = 0;
                    Thread::signal_wait(0x01);
                    out = 1;
                    Thread::signal_wait(0x01);
                }
            }
        }
    }
}


//DEMODULATION
void receiveChar()
{
    char res;
    while(1) {
        res=0x00;
        for(int i =0; i<8; i++) {
            osEvent evt = queueBitReception.get();
            if(evt.status == osEventMessage) {
                res = res | (((char)evt.value.p)<<i);
            }
        }
        mailBoxReception.put((char*)res);
    }

}

//DEMODULATION
void receiveBit()
{
    int oldTime;
    bool bitType=false;
    Thread::signal_wait(0x02);
    oldTime = timer.read_ms();
    while(1) {
        
        
        Thread::signal_wait(0x01);
        if(timer.read_ms()-oldTime<T) {
            Thread::signal_wait(0x01);
            oldTime=timer.read_ms();
        } else {
            oldTime=timer.read_ms();
            bitType=!bitType;
        }
        
        
        
        
        
        if(bitType) {
            queueBitReception.put((void*)0x01);
        } else {
            queueBitReception.put((void*)0x00);
        }
        
        
        
    }
}


void interruptRise()
{
    receiveBitThread.signal_set(0x01);
}

void interruptFall()
{
    receiveBitThread.signal_set(0x01);
}

void wake()
{
    sendCharThread.signal_set(0x01);
    led3=!led3;
}


int main()
{
    timer.start();
    ticker.attach(&wake,T/2.0);
    in.rise(&interruptRise);
    in.fall(&interruptFall);
    led3=1;
    wait(1);
    while(1) {
        if(pc.readable()) {
            sendCharThread.start(&sendChar);
        }
    }
}