ryf
@ryf
Eminent Member
Joined: Sep 11, 2025
Last seen: Oct 11, 2025
Topics: 1 / Replies: 18
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RE: I2C not working properly

Same Problem with 25k and my DSP does not work with that low Baudrate. Look's like the two Devices are not compatible... If you could implement a...

2 weeks ago
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RE: I2C not working properly

OK - thank you It's not the big amount of Data, even a Single Write to Adr 0x38 as attached hangs up the UPS.What I don't understand, why does it wo...

2 weeks ago
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RE: I2C not working properly

OK - One step further: If I start the system without my DSP and connect it later, everything works. What I do on startup, I write a big amount of ...

2 weeks ago
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RE: I2C not working properly

another pic attached, why is there a 0 on the last bit when working and a 1 when not working?  i2cProblem.png

2 weeks ago
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RE: I2C not working properly

Still having a problem when my second-Device (SigmaDSP) is on the bus. May any i2c professional can help me, --> see detailed analysis attached. ...

2 weeks ago
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RE: I2C not working properly

OK - after some time and retries:I received the new ordered HAT.I took your Linux-Image and tried again.Changing of the i2c Adress did not work...What...

4 weeks ago
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RE: I2C not working properly

I just ordered a new one, i will inform you when the new one works... (located in Switzerland).

1 month ago
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RE: I2C not working properly

i2c runs great, can read my device on 0x38 without any issue, no read from pico...  fw.png

1 month ago
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RE: I2C not working properly

Now I startet from the beginning with your Bookworm-Image. Still not working, now I can't even read any i2c register (addresses are shown with i2cde...

1 month ago
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RE: I2C not working properly

Hello PiMaster Thank you so much for your great support and effort. Since i'm running an old Firmware 0x117, I tried to update - may this could be...

1 month ago
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RE: I2C not working properly

After Reboot i have 0x00 in this register and the addresses are still on 6x --> see image attached.  pi.png

1 month ago
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RE: I2C not working properly

I still don't get how to change the i2c Adress.After setting: sudo i2cset -y 1 0x6b 0x00 0x50 what to do else / is there any "store to eprom" action...

1 month ago
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RE: I2C not working properly

Not yet, but I try again tonight...

1 month ago
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RE: I2C not working properly

As soon as i have not connected the other Device (what works since years) the adresses appear and pico-status works! When I reconnect the other Devi...

1 month ago
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RE: I2C not working properly

Hi PiMaster Thanks for your reply. What button do you mean for FactoryReset?The second one called "UPS Pico HV4 Reset"?

1 month ago
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