How can use the option I2C pins

John Maloney repo owner

At the moment there is no way to change the I2C pins in MicroBlocks.

Although some boards do have several possible I2C pins groups, they usually only offer I2C on a few specific pin pairs. That would make a pin-switching feature tricky to use except by advanced users.

A bigger issue is portability. MicroBlocks projects can run on many different boards. If it had a command to set specific I2C pins then projects that used that command would be less portable; they could run only on one type of board.

Could you say more about your specific situation? Which board are you using and why do you want to use different I2C pins?

2023-03-27T10:50:07+00:00

Sean shao reporter

I was using the m5stickC plus when I encountered the problem, the sensor can be linked to the head pin port, but also to the tail grove interface.
GPIO 0/26 pins in the header for I2C
GPIO 32/33 pin in the tail grove port for I2C

2023-03-28T01:19:38+00:00

Sean shao reporter

M5StickC Plus connect to RoverC-Pro with Head I2C pin (0/26)

2023-03-28T04:18:32+00:00

John Maloney repo owner

Thanks for sharing that info. I understand why you'd like a way to use the secondary I2C port on the ESP32.

Unfortunately, MicroBlocks no longer supports the M5StickC or M5StickC Plus. Could you use a different M5 product to control your Rover such as:

Basic Core (expensive, but has nice display)

Atom Lite (low cost but no built-in battery)

Both of those products make the I2C pins available to MicroBlocks, although you'd need a Grove adaptor cable. Another option would be to use a Raspberry Pi Pico W board such as:

Cyton Maker Pi Pico

On the Pico and Pico W, MicroBlocks uses pins 4 and 5 for I2C (see special pins) and that board has a Grove connector for those pins.

Good luck with your project!