Read data from 16-bit register address (I2C) about micropython_k210_lobo HOT 2 CLOSED

Hmm,

Actually this can be done by:

 i2c.readfrom_mem(0x55, 0x0100, 2, adrlen=2)

However the resoponse is zero instead of the expected 0x0531.
Here is a captured logic analyser screenshot:

So it seems to be working but I get no data. This is something I have to figure out from here. (Other operations like temperature reading is working fine)

from micropython_k210_lobo.

Yes, the argument name is adrlen as mentioned in the Wiki. Always read the Wiki in case of any issue, it is not complete yet, but I'm working on it...
In official MicroPython port this argument has a name addr_size and is specified in bits.
In the next update, I will add this syntax to be accepted to.
The hardware related functions are usually not standardized.

When other than expected value is read from I2C device it is usually caused by non-adequate pull-up resistors. As other readings are ok, in your case, this is probably not the issue.

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