Input Output with opend drain support

[Rafinha29]

Board

ESP32

Device Description

DevkitC

Hardware Configuration

none

Version

latest master (checkout manually)

IDE Name

Arduino IDE

Operating System

Windows 10

Flash frequency

80Mhz

PSRAM enabled

no

Upload speed

921600

Description

I want to use the "Input output with open drain" option for GPIO configuration but its not listed in the options, from https://github.com/espressif/arduino-esp32/blob/master/cores/esp32/esp32-hal-gpio.h

//GPIO FUNCTIONS
#define INPUT 0x01
// Changed OUTPUT from 0x02 to behave the same as Arduino pinMode(pin,OUTPUT)
// where you can read the state of pin even when it is set as OUTPUT
#define OUTPUT 0x03
#define PULLUP 0x04
#define INPUT_PULLUP 0x05
#define PULLDOWN 0x08
#define INPUT_PULLDOWN 0x09
#define OPEN_DRAIN 0x10
#define OUTPUT_OPEN_DRAIN 0x12
#define ANALOG 0xC0

Can I pass to the pinMode() function something like "(OUTPUT | OPEN_DRAIN ) ?

Sketch

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Debug Message

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Other Steps to Reproduce

No response

I have checked existing issues, online documentation and the Troubleshooting Guide

• I confirm I have checked existing issues, online documentation and Troubleshooting guide.

[VojtechBartoska]

@P-R-O-C-H-Y can you please help with triaging and possibly answering this one? Thanks.

[P-R-O-C-H-Y]

Hi @Rafinha29, even the option is not listed in the esp32-hal-gpio.h file, you can call:
pinMode( PIN , (OUTPUT_OPEN_DRAIN | INPUT)); or pinMode( PIN , (OUTPUT | OPEN_DRAIN )); like you mentioned. It should setup the pin as input/output with open drain. Feel free to test it and let us know if that worked for you :)

[VojtechBartoska]

any news @Rafinha29?