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avr_demo/hello_uart_async/main.c

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C

/*
* Test how to use uart stuff as an outside library. Redirects stdout
* to uart.
*
* Led at Arduino digital 13 (PORTB5). Cause we all love blinken leds!
*
* To compile and upload run: make clean; make; make program;
* Connect to serial with: screen /dev/tty.usbserial-* 9600
*
* Copyright 2011 Mika Tuupola
*
* Licensed under the MIT license:
* http://www.opensource.org/licenses/mit-license.php
*
*/
#ifndef F_CPU
#define F_CPU 16000000UL
#endif
//#include <stdlib.h>
#include <avr/io.h>
#include <stdio.h>
#include <util/delay.h>
#include "main.h"
#include "uart.h"
int main(void) {
uart_init();
stdout = &uart_output;
stdin = &uart_input;
while (1) {
/* Blink led by toggling state of PORTB5 (Arduino digital 13). */
PORTB ^= _BV(PORTB5);
puts("Hello async world!");
_delay_ms(500);
}
return 0;
}