This isn't the exact code, but this is what it basically does. int main(void) { usart_send("AVR TEST"); while(1){ } } The ATmega168 sends "AVR TEST" ounce and then goes into a infinite loop. when I open a serial terminal i.e putty or hyperterminal it receives "AVR TEST". But the problem is that…

USART retransmits every time putty is opened

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