Hello everyone!
I need to interface the ATMega8a with Arduino Uno to read information from ATMega8a the using ICSP conector.
The ATMEGA8A has MOSI, MISO and CLK pins, how could I connect it to the Arduino Uno to read information?
Any help will be appreciated.
Everything and more on doing that can be found here: Gammon Forum : Electronics : Microprocessors : SPI - Serial Peripheral Interface - for Arduino
For the ATMega8A, you'll probably want to install MiniCore so you can upload a bootloader onto the '8 and use it in the Arduino IDE.
Actually I don´t want to upload anything to ATMEGA8A, I only need to check how this processor works and capture some data usning ICSP interface. I will take alook at these links, thank you dear avr_fred!
only need to check how this processor works and capture some data usning ICSP interface.
You can't "just capture data from the ICSP interface." To get data from the ATmega8 to the Uno, you'll need to write a sketch for the ATmega8 to read and respond as an SPI slave device. And you'll probably need at least one pin beyond the ISP connector, because you need a "slave select" signal where the ISP connector has only "reset"...