crashtest-r0ket/misc/openbeacon/lpc13xx/usbcdc/src/main.c

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2011-06-12 02:18:11 +00:00
/***************************************************************
*
* OpenBeacon.org - USB CDC + FreeRTOS Pipes Demo
*
* Copyright 2011 Milosch Meriac <meriac@openbeacon.de>
*
***************************************************************
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <openbeacon.h>
static BOOL vTasksRunning = FALSE;
/*
* overwrite default_putchar with USB CDC ACM
* output to enable USB support for debug_printf
*/
BOOL default_putchar(uint8_t data)
{
if (vTasksRunning)
CDC_PutChar (data);
/* always send out over serial port as well */
UARTSendChar (data);
return TRUE;
}
static void serial_task(void *handle)
{
int i;
(void) handle;
portCHAR data;
vTasksRunning = TRUE;
i = 0;
for (;;)
{
debug_printf("%04i: Hello Task! (%04i bytes free heap memory)\n", i++,
xPortGetFreeHeapSize());
GPIOSetValue(LED_PORT, LED_BIT, LED_ON);
vTaskDelay(10 / portTICK_RATE_MS);
GPIOSetValue(LED_PORT, LED_BIT, LED_OFF);
while (CDC_Recv(&data, sizeof(data), 990))
UARTSendChar(data);
}
}
int main(void)
{
/* Enable CT32B1 Timer, IOCON, and USB */
LPC_SYSCON->SYSAHBCLKCTRL |= (EN_CT32B1 | EN_USB_REG | EN_IOCON);
/* Initialize GPIO */
GPIOInit();
/* Set LED port pin to output */
GPIOSetDir(LED_PORT, LED_BIT, 1);
GPIOSetValue(LED_PORT, LED_BIT, 0);
/* CDC Initialization */
CDC_Init();
/* USB Initialization */
USB_Init();
/* Connect to USB port */
USB_Connect(1);
/* Update System Core Clock Value */
SystemCoreClockUpdate();
/* NVIC is installed inside UARTInit file. */
UARTInit(115200, 0);
/* the following text is printed on the serial port as vTasksRunning
* is not yet set to TRUE in serial_task - which will redirect
* debug output to the CDC ACM USB serial device.
*/
debug_printf("Hello World!\n");
/* Create CDC ACM task */
xTaskCreate(serial_task, (const signed char*) "Serial", TASK_SERIAL_STACK_SIZE, NULL, TASK_SERIAL_PRIORITY, NULL);
/* Start the tasks running. */
vTaskStartScheduler();
return 0;
}