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39 lines
582 B
39 lines
582 B
10 years ago
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#include <avr/io.h>
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#include <util/delay.h>
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#include <avr/pgmspace.h>
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#include <avr/interrupt.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include "lib/uart.h"
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// UART receive interrupt vector
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ISR(USART_RX_vect)
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{
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uint8_t c = uart_rx();
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// print character and it's code
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uart_putc(c);
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uart_putc(' ');
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uart_putu(c);
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uart_nl();
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}
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void main()
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{
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// Set up UART at speed 9600 baud
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uart_init(9600);
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// Enable receive ISR
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uart_isr_rx(1);
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// Enable interrupts
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sei();
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// Greeter string
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uart_puts_pgm(PSTR("UART receiver with ISR\r\n"));
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while(1);
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}
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