USBSerial.cpp

00001 /* Copyright (c) 2010-2011 mbed.org, MIT License
00002 *
00003 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
00004 * and associated documentation files (the "Software"), to deal in the Software without
00005 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
00006 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
00007 * Software is furnished to do so, subject to the following conditions:
00008 *
00009 * The above copyright notice and this permission notice shall be included in all copies or
00010 * substantial portions of the Software.
00011 *
00012 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
00013 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00014 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
00015 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00016 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00017 */
00018 
00019 #include "stdint.h"
00020 #include "USBSerial.h"
00021 
00022 int USBSerial::_putc(int c) {
00023     send((uint8_t *)&c, 1);
00024     return 1;
00025 }
00026 
00027 int USBSerial::_getc() {
00028     uint8_t c;
00029     while (buf.isEmpty());
00030     buf.dequeue(&c);
00031     return c;
00032 }
00033 
00034 
00035 bool USBSerial::writeBlock(uint8_t * buf, uint16_t size) {
00036     if(size > MAX_PACKET_SIZE_EPBULK) {
00037         return false;
00038     }
00039     if(!send(buf, size)) {
00040         return false;
00041     }
00042     return true;
00043 }
00044 
00045 
00046 
00047 bool USBSerial::EP2_OUT_callback() {
00048     uint8_t c[65];
00049     uint32_t size = 0;
00050 
00051     //we read the packet received and put it on the circular buffer
00052     readEP(c, &size);
00053     for (int i = 0; i < size; i++) {
00054         buf.queue(c[i]);
00055     }
00056 
00057     //call a potential handler
00058     rx.call();
00059 
00060     // We reactivate the endpoint to receive next characters
00061     readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
00062     return true;
00063 }
00064 
00065 uint8_t USBSerial::available() {
00066     return buf.available();
00067 }