Hi
Arduino IDE
I believe that the RP2040 supports 12bit resolution, I can use analogWrite to provide 8 bit resolution can this be adjusted to give 12 bitis (0-1024).
Second question using micropython. Does the micropython pwm library work with the XAIO and can it provide the 12bit range or is it still limited to 8bits
Thank you
a 12-bit ADC (see RP2040 datasheet section 4.9. 3 for more details), meaning that a read operation will return a number ranging from 0 to 4095 (2^12 - 1) for a total of 4096 possible values. Therefore, the resolution of the ADC is 3.3/4096 , so roughly steps of 0.8 millivolts.
You want to reexamine that question?
LMK
HTH
GL 
PJ
Hi
Yes my question was meant to refer to the DAC resolution not the ADC resolution. I.e. analogWrite(pin, value). The RP2040 has
UP-TO 16-Bit, it is a Time/Resolution trade off. When your rp2040 is running at 125 Mhz and have 16-Bit (0 to 65535) resolution. What speed is the XAIO running at.
In micropython you can use pwm to set freqency and duty cycle which worked but i need I2C slave mode which is not supported so back to Arduino core. My question is thus really … is there anyway i can do better than the 8 bit resolution of analogWrite with the XAIO rp2040.