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/******************************************************************************
* The MIT License
*
* Copyright (c) 2010 Perry Hung.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*****************************************************************************/
/**
* @brief Wirish USB class for easy communication, uses libmaple's
* virtual com port implementation
*/
#include <string.h>
#include "wirish.h"
#include "usb.h"
#define USB_TIMEOUT 50
USBSerial :: USBSerial(void) {
}
void USBSerial::begin(void) {
setupUSB();
}
void USBSerial::end(void) {
disableUSB();
}
void USBSerial::write(uint8 ch) {
if(!(usbIsConnected() && usbIsConfigured())) {
return;
}
uint16 status = 0;
uint32 start = millis();
while(status == 0 && (millis() - start <= USB_TIMEOUT)) {
status = usbSendBytes(&ch, 1);
}
}
void USBSerial::write(const char *str) {
if(!(usbIsConnected() && usbIsConfigured())) {
return;
}
uint32 len = strlen(str);
uint16 status = 0;
uint16 oldstatus = 0;
uint32 start = millis();
while(status < len && (millis() - start < USB_TIMEOUT)) {
status += usbSendBytes((uint8*)str+status, len-status);
if(oldstatus != status)
start = millis();
oldstatus = status;
}
}
void USBSerial::write(void *buf, uint32 size) {
if(!(usbIsConnected() && usbIsConfigured())) {
return;
}
if (!buf) {
return;
}
uint16 status = 0;
uint16 oldstatus = 0;
uint32 start = millis();
while(status < size && (millis() - start < USB_TIMEOUT)) {
status += usbSendBytes((uint8*)buf+status, size-status);
if(oldstatus != status)
start = millis();
oldstatus = status;
}
}
uint32 USBSerial::available(void) {
return usbBytesAvailable();
}
/* blocks forever until len_bytes is received */
uint32 USBSerial::read(void *buf, uint32 len) {
if (!buf) {
return 0;
}
uint32 bytes_in = 0;
while (len > 0) {
uint32 new_bytes = usbReceiveBytes((uint8*)((uint8*)buf+bytes_in), len);
len -= new_bytes;
bytes_in += new_bytes;
}
return len;
}
/* blocks forever until 1 byte is received */
uint8 USBSerial::read(void) {
uint8 ch;
while (usbReceiveBytes(&ch, 1) == 0);
return ch;
}
uint8 USBSerial::pending(void) {
return usbGetPending();
}
// TODO deprecate the crap out of this
uint8 USBSerial::getDTR(void) {
return usbGetDTR();
}
// TODO deprecate the crap out of this
uint8 USBSerial::getRTS(void) {
return usbGetRTS();
}
uint8 USBSerial::isConnected(void) {
return (usbIsConnected() && usbIsConfigured());
}
USBSerial SerialUSB;
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