Software Pullups
Posted: Sat Aug 06, 2016 9:41 amI know the focus is currently concentrated on debugging, but perhaps this could be added to a rainy-day list for consideration in the future...
Would it be possible to add the ESPs software pullup facility as a pin option, and perhaps also as an option for the 'interrupt' commands' pin?
The ESP bootloader apparently enables software pullup for gpio00 so it can be used to select flashing mode at bootup, but that same button no longer functions once ESP_Basic is loaded unless a physical pullup resistor is added to the button.
Likewise, the pin used in the interrupt command also requires an external pullup resistor for the interrupt to actually work.
Software pullups aren't essential, and not always the best choice, but they could certainly make using pin inputs a lot easier, and could prevent the need for adding an awkward rats nest of pullup resistors to pin inputs.
Would it be possible to add the ESPs software pullup facility as a pin option, and perhaps also as an option for the 'interrupt' commands' pin?
The ESP bootloader apparently enables software pullup for gpio00 so it can be used to select flashing mode at bootup, but that same button no longer functions once ESP_Basic is loaded unless a physical pullup resistor is added to the button.
Likewise, the pin used in the interrupt command also requires an external pullup resistor for the interrupt to actually work.
Software pullups aren't essential, and not always the best choice, but they could certainly make using pin inputs a lot easier, and could prevent the need for adding an awkward rats nest of pullup resistors to pin inputs.