I am using a mega as master and an slave integrated circuit.
When I shut down the integrated circuit, the sck pin remain high.
Putting the sck high with the power supply off will destroy the circuit.
So I have to put the sck down before shuting down the supply of the IC.
if I put this code:
This doesn’t work, the pin remain high.
If i print the SCK pin, like
The number 13 is written in the console.
That is very surprising because for the Mega, according to the Arduino doc the sck pin is 52 !
Pin 13 is corresponding to SCK but for the arduino Uno…
But, the SPI bus is running correctli…
I try to force the pin 52 to low but the pin doesnt go down !
Any help will be welcome…