kod programu jest z AVR Freaks tutorial
Kod: Zaznacz cały
#include <avr/io.h>
#define F_CPU 8000000
#define USART_BAUDRATE 9600
#define BAUD_PRESCALE (((F_CPU / (USART_BAUDRATE * 16UL))) - 1)
int main (void)
{
char ReceivedByte;
UCSRB |= (1 << RXEN) | (1 << TXEN); // Turn on the transmission and reception circuitry
UCSRC |= (1 << URSEL) | (1 << UCSZ0) | (1 << UCSZ1); // Use 8-bit character sizes
UBRRL = BAUD_PRESCALE; // Load lower 8-bits of the baud rate value into the low byte of the UBRR register
UBRRH = (BAUD_PRESCALE >> 8); // Load upper 8-bits of the baud rate value into the high byte of the UBRR register
for (;;) // Loop forever
{
while ((UCSRA & (1 << RXC)) == 0) {}; // Do nothing until data have been recieved and is ready to be read from UDR
ReceivedByte = UDR; // Fetch the recieved byte value into the variable "ByteReceived"
while ((UCSRA & (1 << UDRE)) == 0) {}; // Do nothing until UDR is ready for more data to be written to it
UDR = ReceivedByte; // Echo back the received byte back to the computer
}
}
Kod: Zaznacz cały
avrdude: AVR device initialized and ready to accept instructions
Reading | ################################################## | 100% 0.07s
avrdude: Device signature = 0x1e9307
avrdude: reading input file "main.hex"
avrdude: input file main.hex auto detected as Intel Hex
avrdude: ERROR: address 0x810010 out of range at line 93 of main.hex
avrdude: write to file 'main.hex' failed
avrdude: safemode: Fuses OK
avrdude done. Thank you.
