Bela Gem Multi - unrecognized from IDE

giuliomoro

Does the text from those commands print quickly or slowly over time, one '--' pair at a time ? After you run them, also show the output of dmesg | grep i2c please.

gugdia

this with the jumpers
root@bela:~/Bela# i2cdetect -y -r 1 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- -- root@bela:~/Bela# dmesg | grep i2c [ 2.114019] i2c_dev: i2c /dev entries driver [ 2.466435] /bus@f0000/bus@b00000/i2c@2b200000/pmic@30: Fixed dependency cycle(s) with /bus@f0000/bus@b00000/i2c@2b200000/pmic@30/regulators/buck2 [ 2.499595] omap_i2c 2b200000.i2c: bus 3 rev0.12 at 100 kHz [ 2.507813] omap_i2c 20000000.i2c: bus 0 rev0.12 at 400 kHz [ 2.515471] omap_i2c 20010000.i2c: bus 2 rev0.12 at 100 kHz [ 2.522670] omap_i2c 20020000.i2c: bus 1 rev0.12 at 400 kHz [ 2.767354] i2c-gpio bus@f0000:i2c_gpio: using lines 659 (SDA) and 660 (SCL)

this without
root@bela:~/Bela# i2cdetect -y -r 2 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- -- root@bela:~/Bela# dmesg | grep i2c [ 2.114019] i2c_dev: i2c /dev entries driver [ 2.466435] /bus@f0000/bus@b00000/i2c@2b200000/pmic@30: Fixed dependency cycle(s) with /bus@f0000/bus@b00000/i2c@2b200000/pmic@30/regulators/buck2 [ 2.499595] omap_i2c 2b200000.i2c: bus 3 rev0.12 at 100 kHz [ 2.507813] omap_i2c 20000000.i2c: bus 0 rev0.12 at 400 kHz [ 2.515471] omap_i2c 20010000.i2c: bus 2 rev0.12 at 100 kHz [ 2.522670] omap_i2c 20020000.i2c: bus 1 rev0.12 at 400 kHz [ 2.767354] i2c-gpio bus@f0000:i2c_gpio: using lines 659 (SDA) and 660 (SCL)

super fast with both

giuliomoro

Then I cannot help but conclude that it's a PB2 issue ...

gugdia

So I assume that I should ask for a replacement for that... Thank you for the patience

giuliomoro

I think so ... maybe if you want to be sure, you could try connecting some other I2C accessories to the PB2 and see if those are correctly detected, but it really seems like something's wrong with it. You could also, with the cape plugged in, verify that you get 5V and 3.3V at the pins indicated on the PCB, as well as 3.3V on P1.14.

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