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#include "uart.h"
/*! Define that selects the Usart used in example. */
#define USART USARTC0
#define TIMEOUT 0
#define BYTE_REC 1
void init_uart0(void)
{
/* This PORT setting is only valid to USARTC0 if other USARTs is used a
* different PORT and/or pins is used. */
/* PIN3 (TXD0) as output. */
PORTC.DIRSET = PIN3_bm;
/* PC2 (RXD0) as input. */
PORTC.DIRCLR = PIN2_bm;
/* USARTC0, 8 Data bits, No Parity, 1 Stop bit. */
USART_Format_Set(&USART, USART_CHSIZE_8BIT_gc, USART_PMODE_DISABLED_gc, false);
/* Set Baudrate to 9600 bps:
* Use the default I/O clock fequency that is 2 MHz.
* Do not use the baudrate scale factor
*
* Baudrate select = (1/(16*(((I/O clock frequency)/Baudrate)-1)
* = 12
*/
USART_Baudrate_Set(&USART, 11, 0);
/* Enable both RX and TX. */
USART_Rx_Enable(&USART);
USART_Tx_Enable(&USART);
}
unsigned char input_ch_w_timeout_0(char * data, volatile unsigned int timeout)
{
unsigned int timeout_counter = 0;
//check if a byte has been recieved or if the timeout has been excedded
while (timeout_counter != timeout)
{
if (USART_IsRXComplete(&USART))
{
*data = USART_GetChar(&USART);
return BYTE_REC;
}
timeout_counter++;
}
return TIMEOUT;
}
char input_ch_0(void)
{
//check if a byte has been recieved or if the timeout has been excedded
while (!USART_IsRXComplete(&USART))
{
continue;
}
return USART_GetChar(&USART);;
}
void output_ch_0(char data)
{
while(!USART_IsTXDataRegisterEmpty(&USART));
USART_PutChar(&USART, data);
return;
}
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