Ales Povalac / USBDeviceLite

USB device stack, fixes for USBSerial, lightweight without malloc (RTOS ready)

Dependents:   EMIRv2

Fork of USBDevice by Ales Povalac

USBSerial/USBSerial.cpp@1:80ab0d068708, 2012-07-17 (annotated)

Committer:
samux
Date:
Tue Jul 17 14:30:29 2012 +0000
Revision:
1:80ab0d068708
Child:
6:d0945750af57
Update USBDevice lib

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samux 1:80ab0d068708 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
samux 1:80ab0d068708 2 *
samux 1:80ab0d068708 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
samux 1:80ab0d068708 4 * and associated documentation files (the "Software"), to deal in the Software without
samux 1:80ab0d068708 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
samux 1:80ab0d068708 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
samux 1:80ab0d068708 7 * Software is furnished to do so, subject to the following conditions:
samux 1:80ab0d068708 8 *
samux 1:80ab0d068708 9 * The above copyright notice and this permission notice shall be included in all copies or
samux 1:80ab0d068708 10 * substantial portions of the Software.
samux 1:80ab0d068708 11 *
samux 1:80ab0d068708 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
samux 1:80ab0d068708 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
samux 1:80ab0d068708 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
samux 1:80ab0d068708 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
samux 1:80ab0d068708 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
samux 1:80ab0d068708 17 */
samux 1:80ab0d068708 18
samux 1:80ab0d068708 19 #include "stdint.h"
samux 1:80ab0d068708 20 #include "USBSerial.h"
samux 1:80ab0d068708 21
samux 1:80ab0d068708 22 int USBSerial::_putc(int c) {
samux 1:80ab0d068708 23 send((uint8_t *)&c, 1);
samux 1:80ab0d068708 24 return 1;
samux 1:80ab0d068708 25 }
samux 1:80ab0d068708 26
samux 1:80ab0d068708 27 int USBSerial::_getc() {
samux 1:80ab0d068708 28 uint8_t c;
samux 1:80ab0d068708 29 while (buf.isEmpty());
samux 1:80ab0d068708 30 buf.dequeue(&c);
samux 1:80ab0d068708 31 return c;
samux 1:80ab0d068708 32 }
samux 1:80ab0d068708 33
samux 1:80ab0d068708 34
samux 1:80ab0d068708 35 bool USBSerial::writeBlock(uint8_t * buf, uint16_t size) {
samux 1:80ab0d068708 36 if(size > MAX_PACKET_SIZE_EPBULK) {
samux 1:80ab0d068708 37 return false;
samux 1:80ab0d068708 38 }
samux 1:80ab0d068708 39 if(!send(buf, size)) {
samux 1:80ab0d068708 40 return false;
samux 1:80ab0d068708 41 }
samux 1:80ab0d068708 42 return true;
samux 1:80ab0d068708 43 }
samux 1:80ab0d068708 44
samux 1:80ab0d068708 45
samux 1:80ab0d068708 46
samux 1:80ab0d068708 47 bool USBSerial::EP2_OUT_callback() {
samux 1:80ab0d068708 48 uint8_t c[65];
samux 1:80ab0d068708 49 uint32_t size = 0;
samux 1:80ab0d068708 50
samux 1:80ab0d068708 51 //we read the packet received and put it on the circular buffer
samux 1:80ab0d068708 52 readEP(c, &size);
samux 1:80ab0d068708 53 for (int i = 0; i < size; i++) {
samux 1:80ab0d068708 54 buf.queue(c[i]);
samux 1:80ab0d068708 55 }
samux 1:80ab0d068708 56
samux 1:80ab0d068708 57 //call a potential handler
samux 1:80ab0d068708 58 rx.call();
samux 1:80ab0d068708 59
samux 1:80ab0d068708 60 // We reactivate the endpoint to receive next characters
samux 1:80ab0d068708 61 readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
samux 1:80ab0d068708 62 return true;
samux 1:80ab0d068708 63 }
samux 1:80ab0d068708 64
samux 1:80ab0d068708 65 uint8_t USBSerial::available() {
samux 1:80ab0d068708 66 return buf.available();
samux 1:80ab0d068708 67 }