in some circuits there is a RC low pass filter on the ADC inputs. Does this LPF bring benefits to AT90CAN128?
According to the data sheet ADCL must be read first and then ADCH. Could I ensure this is fulfilled with “
adc_data = ADC
Some initializations have to be made before any ADC operations, such as reference voltage, left adjust, adc channel, interrupt and prescaler. In my case I have to change the ADC channel all the time, that is, MUX4 to MUX0 have to be changed at run time. Do I have to initialize everything while changing ADC channels or can I only change MUX0 to MUX4?