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sipeed / MaixPy-v1

MicroPython for K210 RISC-V, let's play with edge AI easier
https://wiki.sipeed.com/maixpy
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some device can't be found by i2c.scan() #274

Closed pritamghanghas closed 4 years ago

pritamghanghas commented 4 years ago

My model loads only in this firmware linked in blog post https://en.bbs.sipeed.com/t/topic/1790. All other firmwares it either crash, returns error or simply hang up either in load or run. In the working firmware i2c doesn't recognize mlx90614, it is not a micropython problem because I tried it on esp8266 and it works like a charm. It is not wiring problem either as I can run a i2c lcd with same pins.

Neutree commented 4 years ago

What "i2c doesn't recognize mlx90614" means?, i2c.scan() return empty? maybe you can directly access to device, share your code

pritamghanghas commented 4 years ago

scan returns empty but I am able to access it directly because the address is already known.

junhuanchen commented 4 years ago

Now support software i2c

can you try I2C3+?


    from machine import I2C
    i2c = I2C(I2C.I2C3, freq=100*1000, scl=24, sda=25)

This is a hardware design flaw.

junhuanchen commented 4 years ago

If there is still an I2C device that cannot be found, please reply to the device model and reopen this issue, thanks.