Digital Potentiometer code example needs delay added

[mlfergy]

https://www.arduino.cc/en/Tutorial/DigitalPotControl

The code needs a delay to work:

void digitalPotWrite(int address, int value) {
// take the SS pin low to select the chip:
digitalWrite(slaveSelectPin, LOW);
delay(100);
// send in the address and value via SPI:
SPI.transfer(address);
SPI.transfer(value);
delay(100);
// take the SS pin high to de-select the chip:
digitalWrite(slaveSelectPin, HIGH);
}

[matthijskooijman]

Are you using the exact same chip as mentioned in that tutorial? Did you look up the amount of delay needed in the datasheet? 50ms sounds like a lot more than a typical chip would require.

[mlfergy]

Exact same chip... I edited the post. It actually doesn't work reliably unless delay is 100 ms

…

On Jun 19, 2017 11:49 AM, "Matthijs Kooijman" ***@***.***> wrote: Are you using the exact same chip as mentioned in that tutorial? Did you look up the amount of delay needed in the datasheet? 50ms sounds like a lot more than a typical chip would require. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#6395 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AcLhMJSWW47mR1WztatLdIirOudlB8zxks5sFqamgaJpZM4N-fOl> .

[SimonePDA]

Fixed the sketch, thanks a lot for your testing.