/** Initialises the software UART, ready for data transmission and reception into the global ring buffers. */
void SoftUART_Init(void)
{
/* Set TX pin to output high, enable RX pull-up */
STXPORT |= (1 << STX);
STXDDR |= (1 << STX);
SRXPORT |= (1 << SRX);
/* Enable INT0 for the detection of incoming start bits that signal the start of a byte */
EICRA = (1 << ISC01);
EIMSK = (1 << INT0);
/* Set the transmission and reception timer compare values for the default baud rate */
SoftUART_SetBaud(9600);
/* Setup reception timer compare ISR */
TIMSK1 = (1 << ICIE1);
/* Setup transmission timer compare ISR and start the timer */
TIMSK3 = (1 << ICIE3);
TCCR3B = ((1 << CS30) | (1 << WGM33) | (1 << WGM32));
}
/** Event handler for the CDC Class driver Line Encoding Changed event.
*
* \param[in] CDCInterfaceInfo Pointer to the CDC class interface configuration structure being referenced
*/
void EVENT_CDC_Device_LineEncodingChanged(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
{
/* Change the software UART's baud rate to match the new baud rate */
SoftUART_SetBaud(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS);
}