ESP32-S3 OneWire

[markusschweitzer]

Hi, I recently bought a ESP32-S3-DevKitC-1 N16R8 and try to get onewire working there.
At first I found out that the library is disabled per default for the ESP32-S3 target. Therefore I added it to CMakePresets.json and compiled the ESP32_S3 target via the dev container.
But when I tried it, it still doesnt work (deployed the sample, but the oneWire.FindAllDevices(); call only returns a 000000000 device. (It gets also returned when I disconnect the pins)

In target_nf_dev_onewire_config.h of the target I saw that UART2 is used. I tried severall other urats and pin combinations but oneWire.FindAllDevices(); always behaves the same.

Is there any way to get this working? I guess just a little hint is needed :)

best regards

[markusschweitzer]

Nevermind I figured it out (al lthe changes I made):

• Add API_nanoFramework.Device.OneWire": "ON" to CMAkePresets.json
• In target_nf_dev_onewire_config.h set the UARt to UART_NUM1 and RX_PIN to 18 and TX_PIN to 17
• In my project add Configuration.SetPinFunction(17, DeviceFunction.COM2_RX); Configuration.SetPinFunction(18, DeviceFunction.COM2_TX);

This made it work for me :) Leaving this here for other people who came looking for this

[Ellerbach]

Thanks for sharing!