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     if (!terminal_connected)
00024         return 0;
00025     send((uint8_t *)&c, 1);
00026     return 1;
00027 }
00028 
00029 int USBSerial::_putcNB(int c) {
00030     if (!terminal_connected)
00031         return 0;
00032     if (!sendNB((uint8_t *)&c, 1)) {
00033         return 0;
00034     }
00035     else {
00036         return 1;
00037     }
00038 }
00039 
00040 int USBSerial::_getc() {
00041     uint8_t c;
00042     while (buf.isEmpty());
00043     buf.dequeue(&c);
00044     return c;
00045 }
00046 
00047 
00048 bool USBSerial::writeBlock(uint8_t * buf, uint16_t size) {
00049     if(size > MAX_PACKET_SIZE_EPBULK) {
00050         return false;
00051     }
00052     if(!send(buf, size)) {
00053         return false;
00054     }
00055     return true;
00056 }
00057 
00058 
00059 
00060 bool USBSerial::EP2_OUT_callback() {
00061     uint8_t c[65];
00062     uint32_t size = 0;
00063 
00064     //we read the packet received and put it on the circular buffer
00065     readEP(c, &size);
00066     for (int i = 0; i < size; i++) {
00067         buf.queue(c[i]);
00068     }
00069 
00070     //call a potential handler
00071     rx.call();
00072 
00073     // We reactivate the endpoint to receive next characters
00074     readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
00075     return true;
00076 }
00077 
00078 bool USBSerial::deviceAttached(void) {
00079     if (terminal_connected) {
00080         return true;
00081     }
00082     else {
00083         return false;
00084     }
00085 }
00086 
00087 uint8_t USBSerial::available() {
00088     return buf.available();
00089 }