AN_0941 AVR304: Half Duplex Interrupt Driven Software UART on tinyAVR and megaAVR devices This Application Note describes how to make a half duplex UART on any tinyAVR or megaAVR device using the 8-bit Timer/Counter0 and an external interrupt. Ultrasonic transducer driver amplifier circuit. Software UART The AT90S2313 and most other AVR controllers has a hardware UART on pins 2 and 3. Sometimes you have to use these pins for another purpose. Bascom has a software UART function that uses extra program space, but you may specify which pins to use for RxD and TxD. The pins to use are specified in the Open command.

Thank you so much for the nice work! Driver bolt 4g mv1. I tried to compile the program using the command (I changed the value of the MCU to “MCU=attiny13a” in the uart.h file as well): $sudo avr-gcc -Wall -g -Os -mmcu=attiny13a -DF_CPU=1200000 -I.