Tasmota and Berry lang with i2c

Justin Adie

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Sep 19, 2022, 3:08:38 AM9/19/22

to TasmotaUsers

Has anyone used an i2c display (using LVGL in Berry) at the same time as other i2c devices being addressed via the main Tasmota interface? If so is there a notable conflict between the two different languages addressing the same pins on the ‘same’ bus?

thanks

Stephan Hadinger

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Sep 19, 2022, 3:32:05 AM9/19/22

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This is not supposed to happen since acces to I2C bus is sequential. Can you please open a Github issue with all the details (version, template...)

Justin Adie

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Sep 19, 2022, 3:34:35 AM9/19/22

to Stephan Hadinger, TasmotaUsers

I do not know that it _does_ happen - I’m asking “just in case” so that I can schedule time to rewrite some of the drivers I need in Berry.

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Stephan Hadinger

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Sep 19, 2022, 3:42:40 AM9/19/22

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Ah ok. The answer is that it is not supposed to interfere. The display driver blocks Tasmota until all pixels are sent, so there is no conflict to accessing I2C bus

Justin Adie

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Sep 19, 2022, 3:43:53 AM9/19/22

to Stephan Hadinger, TasmotaUsers

Thanks. Very grateful for that clarity!

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