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Pin 13 HIGH/LOW
Posted: Thu Oct 17, 2019 1:43 am
by leetut
Is it possible to use a micro controller to set pin 13 high or low
To access the internal programs?
I’ve tried and it always uses the eeprom
Re: Pin 13 HIGH/LOW
Posted: Thu Oct 17, 2019 8:11 am
by frank
Yes so if isn't working there is a problem with your design, you may need a pull-up.
Re: Pin 13 HIGH/LOW
Posted: Thu Oct 17, 2019 11:08 am
by leetut
I didn’t think I needed a pullup resistor because I’m sending either a definitive high or low to pin13
Re: Pin 13 HIGH/LOW
Posted: Thu Oct 17, 2019 11:49 am
by frank
Depends on how you have the port pin configured on the micro, are you sure it is actually driving high?
Re: Pin 13 HIGH/LOW
Posted: Thu Oct 17, 2019 1:19 pm
by leetut
pinMode(PB4, OUTPUT); //fv1 pin13
digitalWrite(PB4, LOW); //high ext, low int
after checking with a multimeter pin PB4 is still high
must be something wrong with the pin, it wouldn't be the first time
at least I know it is possible to do, thank you