Good way to divide 10bit adc by 4?

[aerostar]

Left shift 2 bits is my favorite way to do so. But you can only do this to an unsigned value.

Shouldn't that be Right Shift 2 ?

[HenrikOlsson]

Why not save the program space and execution time by using the ADC in 8-bit mode instead. Same result as far as I can see, ie throw away the the two least significant bits.

/Henrik.