int main( void ) {
unsigned char inc;
unsigned int rx_time=0, tx_time=0;
mcu_init();
sys_time_init();
led_init();
VCOM_allow_linecoding(1);
#ifdef USE_USB_SERIAL
VCOM_init();
#endif
mcu_int_enable();
LED_ON(3);
#ifdef USE_UART0
while(1) {
if (T0TC > (rx_time+((PCLK / T0_PCLK_DIV) / BLINK_MIN))) LED_OFF(1);
if (T0TC > (tx_time+((PCLK / T0_PCLK_DIV) / BLINK_MIN))) LED_OFF(2);
if (uart_char_available(&uart0) && VCOM_check_free_space(1)) {
LED_ON(1);
rx_time = T0TC;
inc = uart_getch(&uart0);
VCOM_putchar(inc);
}
if (VCOM_check_available() && uart_check_free_space(&uart0, 1)) {
LED_ON(2);
tx_time = T0TC;
inc = VCOM_getchar();
uart_transmit(&uart0, inc);
}
}
#else
while(1) {
if (T0TC > (rx_time+((PCLK / T0_PCLK_DIV) / BLINK_MIN))) LED_OFF(1);
if (T0TC > (tx_time+((PCLK / T0_PCLK_DIV) / BLINK_MIN))) LED_OFF(2);
if (uart_char_available(&uart1) && VCOM_check_free_space(1)) {
LED_ON(1);
rx_time = T0TC;
inc = uart_getch(&uart1);
VCOM_putchar(inc);
}
if (VCOM_check_available() && uart_check_free_space(&uart1, 1)) {
LED_ON(2);
tx_time = T0TC;
inc = VCOM_getchar();
uart_transmit(&uart1, inc);
}
}
#endif
return 0;
}
void raw_putchar(char c)
{
#ifdef STANDALONE
while (!(U0LSR & 0x20));
return (U0THR = ch);
#else
#ifdef VCOM
VCOM_putchar((int)c);
#else
putc_serial0((int)c);
#endif
#endif
}
int usb_serial_write(unsigned subdevice, char *buf, unsigned int count)
{
int room;
int i;
if (count == 0) return 0;
room = fifo_free(&txfifo);
if (room == 0) return 0;
if (count > room)
count = room;
for (i = 0; i < count; i++)
VCOM_putchar(*buf++);
return count;
}
void vUSBTask( void *pvParameters )
{
int c;
/* Just to prevent compiler warnings about the unused parameter. */
( void ) pvParameters;
DBG("Initialising USB stack\n");
xRxedChars = xQueueCreate( usbBUFFER_LEN, sizeof( char ) );
xCharsForTx = xQueueCreate( usbBUFFER_LEN, sizeof( char ) );
if( ( xRxedChars == NULL ) || ( xCharsForTx == NULL ) )
{
/* Not enough heap available to create the buffer queues, can't do
anything so just delete ourselves. */
vTaskDelete( NULL );
}
// initialise stack
USBInit();
// register descriptors
USBRegisterDescriptors(abDescriptors);
// register class request handler
USBRegisterRequestHandler(REQTYPE_TYPE_CLASS, HandleClassRequest, abClassReqData);
// register endpoint handlers
USBHwRegisterEPIntHandler(INT_IN_EP, NULL);
USBHwRegisterEPIntHandler(BULK_IN_EP, BulkIn);
USBHwRegisterEPIntHandler(BULK_OUT_EP, BulkOut);
// register frame handler
USBHwRegisterFrameHandler(USBFrameHandler);
// enable bulk-in interrupts on NAKs
USBHwNakIntEnable(INACK_BI);
DBG("Starting USB communication\n");
NVIC_SetPriority( USB_IRQn, configUSB_INTERRUPT_PRIORITY );
NVIC_EnableIRQ( USB_IRQn );
// connect to bus
DBG("Connecting to USB bus\n");
USBHwConnect(TRUE);
// echo any character received (do USB stuff in interrupt)
for( ;; )
{
c = VCOM_getchar();
if (c != EOF)
{
// Echo character back with INCREMENT_ECHO_BY offset, so for example if
// INCREMENT_ECHO_BY is 1 and 'A' is received, 'B' will be echoed back.
VCOM_putchar(c + INCREMENT_ECHO_BY );
}
}
}
/*************************************************************************
main
====
**************************************************************************/
bool USBStart(void)
{
int c;
// initialise stack
USBInit();
// register descriptors
USBRegisterDescriptors(abDescriptors);
// register class request handler
USBRegisterRequestHandler(REQTYPE_TYPE_CLASS, HandleClassRequest, abClassReqData);
// register endpoint handlers
USBHwRegisterEPIntHandler(INT_IN_EP, NULL);
USBHwRegisterEPIntHandler(BULK_IN_EP, BulkIn);
USBHwRegisterEPIntHandler(BULK_OUT_EP, BulkOut);
// register frame handler
USBHwRegisterFrameHandler(USBFrameHandler);
// register device event handler
USBHwRegisterDevIntHandler(USBDevIntHandler);
// initialise VCOM
VCOM_init();
VICVectCntl22 = 0x01;
VICVectAddr22 = (int)USBIntHandler;
// set up USB interrupt
VICIntSelect &= ~(1<<22); // select IRQ for USB
VICIntEnable |= (1<<22);
// connect to bus
USBHwConnect(TRUE);
#if TCM
// echo any character received (do USB stuff in interrupt)
while (1) {
c = VCOM_getchar();
if (c != EOF) {
// show on console
if ((c == 9) || (c == 10) || (c == 13) || ((c >= 32) && (c <= 126))) {
DBG("%c", c);
}
else {
DBG(".");
}
VCOM_putchar(c);
}
}
return 0;
#endif
return true;
}
