File content as of revision 0:741de6c95ae9:

#include "mbed.h"
#include "IRSender.h"

bool IRSender::irSeq(unsigned freq, unsigned len, const unsigned *data)
{
    // TODO: implement a lock or semaphore here
    if (_inUse) {
        return false;
    }
    _inUse = true;

    int pos = 0;
    senderPin.write(0.0);
    senderPin.period_us(freq);

    int times[len];
    for (int i=0; i<len; i++) {
        times[i] = 0;
    }

    int bit = 1;
    LOG("Start\n");
    senderPin.write(0.5);
    timer.start();

    int time = timer.read_us();
    int old_time = time;
    int dt = 0;

    while (pos < len) {
        // TODO: Handle timer overflow
        // Consider using GPIOTE
        old_time = time;
        time = timer.read_us();
        dt += time - old_time;

        while (dt > data[pos] && pos < len) {
            dt -= data[pos];
            bit = !bit;
            senderPin.write(0.5 * bit);
            times[pos] = dt;
            pos++;
        }
    }

    timer.stop();
    senderPin.write(0);
    LOG("Success, wrote %i/%i\n", pos, len);
    LOG("Miss timings: %i", times[0]);
    for (int i=1; i<len; i++) {
        APPEND(", %i", times[i]);
    }
    APPEND("]\n");
    _inUse = false;
    return true;
}