/**
* @brief This function reads one byte from the USB bus
*
* If one byte is present in the USB fifo, this byte is returned. If no data
* is present in the USB fifo, this function waits for USB data.
*
* @return U8 byte received
*/
char uart_usb_getchar(void)
{
register Uchar data_rx;
// Preserve the currently selected endpoint
uint8_t uenum = Usb_get_selected_endpoint();
Usb_select_endpoint(VCP_RX_EP);
if (!rx_counter) while (!uart_usb_test_hit());
data_rx=Usb_read_byte();
rx_counter--;
if (!rx_counter) Usb_ack_receive_out();
#if USB_CDC_ACM_CONF_LOCAL_ECHO
//Local echo
uart_usb_putchar(data_rx);
#endif
USB_CDC_ACM_HOOK_RX(data_rx);
// Restore previously selected endpoint
UENUM = uenum;
return data_rx;
}
void cdc_task(void)
{
if(Is_device_enumerated()) //Enumeration processs OK ?
{
if(cpt_sof>=NB_MS_BEFORE_FLUSH && tx_counter!=0 ) //Flush buffer in Timeout
{
cpt_sof=0;
uart_usb_flush();
}
if ( waiting_to_start && uart_usb_test_hit()) // Something received from the USB ?
{
waiting_to_start = 0;
timer_init();
adc_init();
}
if( !waiting_to_start )
{
READING r;
if( cb_pop( &r ) )
{
uart_usb_putchar( (r.voltage >> 8) & 0xFF );
uart_usb_putchar( r.voltage & 0xFF );
uart_usb_putchar( (r.current >> 8) & 0xFF );
uart_usb_putchar( r.current & 0xFF );
uint16 checksum = r.voltage ^ r.current;
uart_usb_putchar( (checksum >> 8) & 0xFF );
uart_usb_putchar( checksum & 0xFF );
}
}
/**
* @brief This function reads one byte from the USB bus
*
* If one byte is present in the USB fifo, this byte is returned. If no data
* is present in the USB fifo, this function waits for USB data.
*
* @return U8 byte received
*/
char uart_usb_getchar(void)
{
register Uchar data_rx;
Usb_select_endpoint(RX_EP);
if (!rx_counter) while (!uart_usb_test_hit());
data_rx=Usb_read_byte();
rx_counter--;
if (!rx_counter) Usb_ack_receive_out();
return data_rx;
}
char uart_usb_getchar(void)
{
register char data_rx;
while( !uart_usb_test_hit() );
data_rx=Usb_read_endpoint_data(RX_EP, 8);
if( 0==Usb_byte_count(RX_EP) ) {
Usb_ack_out_received_free(RX_EP);
b_rx_new = TRUE;
}
return data_rx;
}
/**
* \brief Communication Data Class (CDC) Process
*
* This is the link between USB and the "good stuff". In this routine data
* is received and processed by CDC-ACM Class
*/
PROCESS_THREAD(cdc_process, ev, data_proc)
{
PROCESS_BEGIN();
uart_usb_init();
while(1) {
// turn off LED's if necessary
if (led3_timer) led3_timer--;
else Led3_off();
if(Is_device_enumerated() && (usb_mode == rndis_debug) && rndis_state && (!usb_busy)) {
if (justenumerated) {
//If we have serial port, set it as output
if (usb_mode == rndis_debug) {
uart_usb_set_stdout();
menu_print();
}
justenumerated = 0;
}
//Flush buffer if timeout
if(timer >= 4 && tx_counter!=0 ){
timer = 0;
uart_usb_flush();
} else {
timer++;
}
while (uart_usb_test_hit()){
menu_process(uart_usb_getchar()); // See what they want
}
}//if (Is_device_enumerated())
if (usb_mode == rndis_debug) {
etimer_set(&et, CLOCK_SECOND/80);
} else {
etimer_set(&et, CLOCK_SECOND);
}
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
} // while(1)
PROCESS_END();
}
/**
* \brief Communication Data Class (CDC) Process
*
* This is the link between USB and the "good stuff". In this routine data
* is received and processed by CDC-ACM Class
*/
PROCESS_THREAD(cdc_process, ev, data_proc)
{
PROCESS_BEGIN();
#if USB_CONF_RS232
static FILE *rs232_stdout,*usb_stdout;
rs232_stdout=stdout;
#endif
while(1) {
// turn off LED's if necessary
if (led3_timer) led3_timer--;
else Led3_off();
if(Is_device_enumerated()) {
// If the configuration is different than the last time we checked...
if((uart_usb_get_control_line_state()&1)!=previous_uart_usb_control_line_state) {
previous_uart_usb_control_line_state = uart_usb_get_control_line_state()&1;
static FILE* previous_stdout;
if(previous_uart_usb_control_line_state&1) {
previous_stdout = stdout;
uart_usb_init();
uart_usb_set_stdout();
// menu_print(); do this later
} else {
stdout = previous_stdout;
}
#if USB_CONF_RS232
usb_stdout=stdout;
#endif
}
//Flush buffer if timeout
if(timer >= 4 && tx_counter!=0 ){
timer = 0;
uart_usb_flush();
} else {
timer++;
}
#if USB_CONF_RS232
stdout=usb_stdout;
#endif
while (uart_usb_test_hit()){
menu_process(uart_usb_getchar()); // See what they want
}
#if USB_CONF_RS232
if (usbstick_mode.debugOn) {
stdout=rs232_stdout;
} else {
stdout=NULL;
}
#endif
}//if (Is_device_enumerated())
if (USB_CONFIG_HAS_DEBUG_PORT(usb_configuration_nb)) {
etimer_set(&et, CLOCK_SECOND/80);
} else {
etimer_set(&et, CLOCK_SECOND);
}
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
} // while(1)
PROCESS_END();
}
