165 lines
3.6 KiB
C++
165 lines
3.6 KiB
C++
/******************************************************************************
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* The MIT License
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*
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* Copyright (c) 2010 Perry Hung.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*****************************************************************************/
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/**
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* @brief USB virtual serial terminal
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*/
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#include <string.h>
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#include "wirish.h"
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#include "usb.h"
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#ifdef SERIAL_USB
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#define USB_TIMEOUT 50
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bool USBSerial::_hasBegun = false;
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USBSerial::USBSerial(void) {
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}
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void USBSerial::begin(void) {
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if (_hasBegun)
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return;
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_hasBegun = true;
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setupUSB();
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}
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void USBSerial::begin(int) {
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this->begin();
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}
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void USBSerial::end(void) {
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disableUSB();
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_hasBegun = false;
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}
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size_t USBSerial::write(uint8 ch) {
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const uint8 buf[] = {ch};
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return this->write(buf, 1);
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}
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size_t USBSerial::write(const char *str) {
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return this->write(str, strlen(str));
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}
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size_t USBSerial::write(const void *buf, uint32 len) {
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if (!(usbIsConnected() && usbIsConfigured()) || !buf) {
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return 0;
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}
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uint32 txed = 0;
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uint32 old_txed = 0;
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uint32 start = millis();
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while (txed < len && (millis() - start < USB_TIMEOUT)) {
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txed += usbSendBytes((const uint8*)buf + txed, len - txed);
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if (old_txed != txed) {
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start = millis();
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}
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old_txed = txed;
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}
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return txed;
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}
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int USBSerial::available(void) {
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return usbBytesAvailable();
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}
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int USBSerial::read(void *buf, uint32 len) {
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if (!buf) {
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return 0;
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}
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uint32 rxed = 0;
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while (rxed < len) {
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rxed += usbReceiveBytes((uint8*)buf + rxed, len - rxed);
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}
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return rxed;
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}
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/* Blocks forever until 1 byte is received */
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int USBSerial::read(void) {
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uint8 buf[1];
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this->read(buf, 1);
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return buf[0];
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}
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int USBSerial::peek(void)
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{
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// ThingToDo : Don't do any thing yet, since F4 doesn't have usb_cdcacm_peek() yet.
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/*
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uint8 b;
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if (usb_cdcacm_peek(&b, 1)==1)
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{
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return b;
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}
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else */
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{
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return -1;
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}
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}
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void USBSerial::flush(void)
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{
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/*Roger Clark. Rather slow method. Need to improve this */
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uint8 b;
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while(usbBytesAvailable())
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{
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this->read(&b, 1);
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}
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return;
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}
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uint8 USBSerial::pending(void) {
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return usbGetPending();
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}
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USBSerial::operator bool() {
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return usbIsConnected() && usbIsConfigured();
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}
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uint8 USBSerial::getDTR(void) {
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return usbGetDTR();
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}
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uint8 USBSerial::getRTS(void) {
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return usbGetRTS();
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}
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void USBSerial::enableBlockingTx(void) {
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usbEnableBlockingTx();
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}
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void USBSerial::disableBlockingTx(void) {
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usbDisableBlockingTx();
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}
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USBSerial SerialUSB;
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#endif
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