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/*
* Copyright 2016 Google Inc. All Rights Reserved.
* Author: gkalsi@google.com (Gurjant Kalsi)
*
* 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.
*/
#include <app.h>
#include <err.h>
#include <dev/usb/class/cdcserial.h>
#include <kernel/thread.h>
static uint8_t rxbuf[64];
static void cdctest_init(const struct app_descriptor *app)
{
}
// Read bytes from CDC Serial and write them back to the stream.
static void cdctest_entry(const struct app_descriptor *app, void *args)
{
while (true) {
ssize_t bytes = cdcserial_read(sizeof(rxbuf), rxbuf);
if (bytes == ERR_NOT_READY) {
// USB is not ready yet.
thread_sleep(100);
continue;
} else if (bytes < 0) {
printf("Error reading bytes from CDC Serial: %ld\n", bytes);
break;
}
cdcserial_write(bytes, rxbuf);
}
}
APP_START(usbtest)
.init = cdctest_init,
.entry = cdctest_entry,
APP_END
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