Using ATMega1284
I want to generate a random number from 0-7 (maybe more range). This is the main concern. As long as it “feels” random its fine. And it could resolve the rest of my issues… anyways
My approach?
I could seed a number off of the ADC port (PORTA in ATMega1284).
This causes me to clear up PORTA for the ADC. But I still need to get another 8 outputs connected.
PORTA has ADC (1/8 pins used)
PORTB is full (8/8 pins used)
PORTC is full (8/8 pins used)
PORTD has USART on (2/8 pins used)
I still need 8 pins for output and each port is doing its thing. So could I split PORTA and PORTD so I could connect 8 more pins? how would I do this when I have UART and ADC enabled?
OR
If someone could provide an internal/better way of getting a random number. It could solve the issue entirely