How do I use the button component with the keypad? (AEGHB-369)

[ertekinsener]

• I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there.
• I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there.
• I have searched the issue tracker for a similar issue and not found a similar issue.

Environment

• Development Kit: [ESP32-DevKitC]
• Kit version : [v1]
• Module or chip used: [ESP32 S3]
• IDF version : v5.0.2
• Build System: [Make|CMake]
• Compiler version : 11.2.0
• Operating System: [Windows]
• Power Supply: [USB]

Problem Description

How can I use button components with keypads? I tried to handle it with button_custom_get_key_value . I couldn't do it because the function takes the gpio number as a parameter.

A detailed explanation of the keypads I am trying to use is available at this link: https://lastminuteengineers.com/arduino-keypad-tutorial/

Thanks for your answers

[lijunru-hub]

The default GPIO detection for buttons is not suitable for a matrix keyboard. You need to use the button_custom_config_t in the button component to create a custom button. Set the priv field to your current key's custom identifier, and then you need to create 16 button objects (4x4 matrix). The button will automatically invoke the button_custom_get_key_value function you've configured and pass priv to it. Within that function, you should determine if a key is pressed and return its status.

[ertekinsener]

Thank you for your reply. I did as you said and managed to get it to work. Do you plan to add keypad support to the library in the future?

Secondly, " TEST_CASE("gpio button test", "[button][iot]")" What does this do? I couldn't find it in the documentation.

[leeebo]

@ertekinsener TEST_CASE("gpio button test", "[button][iot]") is used for component unit test, you can refer the doc https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-guides/unit-tests.html

[lijunru-hub]

Components button support matrix keypad on version 3.1.0