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 
00020 #include "stdint.h"
00021 #include "USBSerial.h"
00022 
00023 int USBSerial::_putc(int c) {
00024     if (!terminal_connected)
00025         return 0;
00026     send((uint8_t *)&c, 1);
00027     return 1;
00028 }
00029 
00030 int USBSerial::_getc() {
00031     uint8_t c = 0;
00032     while (buf.isEmpty());
00033     buf.dequeue(&c);
00034     return c;
00035 }
00036 
00037 bool USBSerial::writeBlock(uint8_t * buf, uint16_t size) {
00038     if(size > MAX_PACKET_SIZE_EPBULK) {
00039         return false;
00040     }
00041     if(!send(buf, size)) {
00042         return false;
00043     }
00044     return true;
00045 }
00046 
00047 
00048 
00049 bool USBSerial::EP_OUT_callback(void *_self) {
00050     USBSerial *self = (USBSerial *)_self;
00051     uint8_t c[65];
00052     uint32_t size = 0;
00053 
00054     //we read the packet received and put it on the circular buffer
00055     self->readEP(c, &size);
00056     for (uint32_t i = 0; i < size; i++) {
00057         self->buf.queue(c[i]);
00058     }
00059 
00060     //call a potential handler
00061     self->rx.call();
00062 
00063     return true;
00064 }
00065 
00066 uint8_t USBSerial::available() {
00067     return buf.available();
00068 }