Serial Communication between atmega128 and raspberry pi 3 - Raspberry Pi Forums

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hello everyone, newbie raspberry pi 3 , trying make serial connection between raspberry pi 3 , atmega128 development board using usb cord , don't know if enough. use raspberry pi control atmega board. write different codes necessary control atmega128 board, leds, buttons etc. have tried installing avrdude stuck trying configure linux gpio , again not know necessary , not. first of all, using usb cord enough because has txd, rxd , ground etc numbers use if i'm trying configure linux miso, reset etc please hope can give me step step set this.

reason why using both raspberry pi , atmega because i'm trying make wireless connection between app on phone , thermostat has atmega128 , using raspberry pi 3 wireless (bluetooth , wifi) medium between two.

really hope can me , please let me know if have more information project. thank 😊

what atmega128 board using? many use 5 volt logic levels. rpi gpios use 3.3 volt levels. must not connect them directly.


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