Philips Philips / Mbed 2 deprecated UsbReverseAudioguitarspeaker

This is early stages of my project, the idea of this project is to be able to mix a guitar with windows sounds in reverse such as instrumental background music or trance music perhaps or maybe another fellow guitarist you may have downloaded from the internet. Microphone or guitar pin is p19 I would use a microphone for drums:) and that it for the moment, the code makes the mbed act as usb speaker that excepts a guitar or microphone input, but with a twist it all in reverse like a guitar reverse effects pedal but only you can mix anything you can get from the internet or any windows sound.

Dependencies:   mbed

USBDevice/USBSERIAL/USBSerial.cpp

Committer:
mbed2f
Date:
2012-01-08
Revision:
0:7610d342c76e

File content as of revision 0:7610d342c76e:

/* Copyright (c) 2010-2011 mbed.org, MIT License
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
* and associated documentation files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or
* substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

#include "stdint.h"
#include "USBSerial.h"
#include "USBBusInterface.h"


int USBSerial::_putc(int c) {
    send((uint8_t *)&c, 1);
    return 1;
}

int USBSerial::_getc() {
    uint8_t c;
    while (buf.isEmpty());
    buf.dequeue(&c);
    return c;
}


bool USBSerial::writeBlock(uint8_t * buf, uint16_t size) {
    if(size > MAX_PACKET_SIZE_EPBULK) {
        return false;
    }
    if(!send(buf, size)) {
        return false;
    }
    return true;
}



bool USBSerial::EP2_OUT_callback() {
    uint8_t c[65];
    uint16_t size = 0;

    //we read the packet received and put it on the circular buffer
    readEP(c, &size);
    for (int i = 0; i < size; i++) {
        buf.queue(c[i]);
    }

    //call a potential handler
    rx.call();

    // We reactivate the endpoint to receive next characters
    readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
    return true;
}

uint8_t USBSerial::available() {
    return buf.available();
}