Issue with Pi Pico

[GregDuckworthRenishaw]

Hi, I have been looking to use Onewire devices with the Raspberry Pi Pico. I have tried PaulStoffregen's library (https://github.com/PaulStoffregen/OneWire), but I only get crashes when searching for devices.

I found your library, which seems to suggest it works with the Pico so I added the library to my PlatformIO project but I am not having much luck.

I next tried the default example in both PlatformIO and in Arduino 2.2.0 but neither library would find the device attached to the Pico. To confirm my findings, I plugged in an Arduino Micro, using the original library, I was able to read the address of the device (therefore my pull-up is sufficient)

I can attach the project I used but it was quite literally a new Arduino IDE 2.2.0 install, automatic board manager for the board (Arduino MBED OS RP2040), only the OneWireNG library installed, and the DallasTemperature example used. Any ideas what I can try to debug this?

Thanks

Greg

[pstolarz]

What type of error do you get? Have you set GPIO number correctly for the example?

[pstolarz]

Just checked the DallasTemperature example on my Rpi Pico setup with the following cases:

• Arduino IDE 2.2.0, core Mbed OS RP2040 v4.0.4
• Arduino IDE 2.2.0, core Rasperry Pi Pico/RP2040 by E. F. Philhower v3.4.0
• Pico SDK v1.5.1

All of them work fine, no issues observed.

[GregDuckworthRenishaw]

Thank you for the confirmation, I will go an recheck my setup and see what I can do.

Thanks

Greg

[GregDuckworthRenishaw]

Just to follow up: I have now got the DallasTemperature example working, thanks you.

The problem I had was the level converters that the breakout board had between the Pico and the output. More testing needed but it seems to be working well. Thanks for the confirmation :)

Greg