USB | ATMega
RX ---> TX
TX ---> RX
5v ----> 5v
GND -> GND
and GND --> button --> RESET
My USB-TTL converter doesn't have a DTR pin. But, I tried programming my Arduino UNO with it. I hold RESET pin on my Arduino UNO, click upload and release the button. It works.
When I do the same with ATMega, avrdude / Arduino IDE gives me this output:
~$ sudo avrdude -c arduino -p atmega328p -P /dev/ttyUSB0 -U flash:w:blink.hex avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00 ... avrdude: stk500_recv(): programmer is not avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x00 avrdude done. Thank you.
Same error with
-c avrisp and on Arduino IDE.
1) Do I need something special for first time, like burning a bootloader? I read that I can flash it without burning bootloader, so I don't think that's the case.
2) Also I saw a lot of people using crystal and capacitor for flashing. Is it necessary? Because I don't have crystal.
3) If I can flash it without a bootloader and without a crystal, what am I doing wrong?
Edit: It appears I needed a ISP programmer. Even though I tried it with ISP programmer it did not work. I connected a 16MHz crystal and I successfully programmed it!