I2C not working properly - UPS PIco HV4.0B/C https://pimodules.com/community/ups-pico-hv4-0b/i2c-not-working-properly Pi Modules Discussion Board en-US Sun, 08 Mar 2026 17:56:49 +0000 wpForo 60 RE: I2C not working properly https://pimodules.com/community/ups-pico-hv4-0b/i2c-not-working-properly/paged/4#post-998 Mon, 22 Dec 2025 12:04:30 +0000 @ryf 
Hi,

The I2C seems to be working, right now adding the final version of rea time current/power measure

Should be release by today max tomorrow.

My Best Regards

PiM

]]> UPS PIco HV4.0B/C PiAdmin https://pimodules.com/community/ups-pico-hv4-0b/i2c-not-working-properly/paged/4#post-998 RE: I2C not working properly https://pimodules.com/community/ups-pico-hv4-0b/i2c-not-working-properly/paged/4#post-997 Mon, 22 Dec 2025 11:52:27 +0000 What is the status of the new firmware? Is it ready yet?

]]> UPS PIco HV4.0B/C ryf https://pimodules.com/community/ups-pico-hv4-0b/i2c-not-working-properly/paged/4#post-997 RE: I2C not working properly https://pimodules.com/community/ups-pico-hv4-0b/i2c-not-working-properly/paged/3#post-994 Sun, 30 Nov 2025 16:22:31 +0000 Hi,
Your part of the I2C is ready, just still testing the extra features (with real time current/power measure)

so need 1-2 days more to release completed version

BR PiM

]]> UPS PIco HV4.0B/C PiAdmin https://pimodules.com/community/ups-pico-hv4-0b/i2c-not-working-properly/paged/3#post-994 RE: I2C not working properly https://pimodules.com/community/ups-pico-hv4-0b/i2c-not-working-properly/paged/3#post-989 Wed, 26 Nov 2025 21:58:22 +0000 Hi,

Seems I corrected this bug, however I will release newer firmware with some other requests, so delay probably until end of this week. We are adding also some extra features that could be helpful.

My Best Regards

PiM

]]> UPS PIco HV4.0B/C PiAdmin https://pimodules.com/community/ups-pico-hv4-0b/i2c-not-working-properly/paged/3#post-989 RE: I2C not working properly https://pimodules.com/community/ups-pico-hv4-0b/i2c-not-working-properly/paged/3#post-986 Sat, 22 Nov 2025 14:45:22 +0000 @ryf 
Hi,

Today later on, closer to our night. Your problem seems to be corrected just doing also other things requested by others as also adding current and power calculator
so today later on

My Best Regards

PiM

]]> UPS PIco HV4.0B/C PiAdmin https://pimodules.com/community/ups-pico-hv4-0b/i2c-not-working-properly/paged/3#post-986 RE: I2C not working properly https://pimodules.com/community/ups-pico-hv4-0b/i2c-not-working-properly/paged/3#post-985 Sat, 22 Nov 2025 14:43:03 +0000 absolutely - yes please.

]]> UPS PIco HV4.0B/C ryf https://pimodules.com/community/ups-pico-hv4-0b/i2c-not-working-properly/paged/3#post-985 RE: I2C not working properly https://pimodules.com/community/ups-pico-hv4-0b/i2c-not-working-properly/paged/3#post-983 Fri, 21 Nov 2025 21:23:14 +0000 @ryf 

Hi,

I re-written the I2C routines, and seems solved your problem, are you willing to test on your system as it is the reference for me.
If so I publish here the new firmware so you can test it

BR PiM

 

]]> UPS PIco HV4.0B/C PiAdmin https://pimodules.com/community/ups-pico-hv4-0b/i2c-not-working-properly/paged/3#post-983 RE: I2C not working properly https://pimodules.com/community/ups-pico-hv4-0b/i2c-not-working-properly/paged/3#post-980 Sat, 11 Oct 2025 14:59:27 +0000 @ryf 

First of all Thank you for your positive comments !

Second of all there no not compatible devices. It is up to us, and we made them compatible. Not miracles.

No one reported such bug, but it is good, because we will improve the firmware.

Yes, I add such watchdog.

The only minus is that you need to wait, until I return for the UK. So, able to work on this end of next week. 

As I see, you have I2C analyzer, so it is perfect as both have a proper tools.

We will solve it for 10000%. No miracles on this matter.

My Best Regards

PiM

]]> UPS PIco HV4.0B/C PiAdmin https://pimodules.com/community/ups-pico-hv4-0b/i2c-not-working-properly/paged/3#post-980 RE: I2C not working properly https://pimodules.com/community/ups-pico-hv4-0b/i2c-not-working-properly/paged/3#post-979 Sat, 11 Oct 2025 14:40:20 +0000 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 Firmwareupgrade with a Whatchdog, that UPS Resets after it hangs up...

Thanks so much again for your absolutely great support!

]]> UPS PIco HV4.0B/C ryf https://pimodules.com/community/ups-pico-hv4-0b/i2c-not-working-properly/paged/3#post-979 RE: I2C not working properly https://pimodules.com/community/ups-pico-hv4-0b/i2c-not-working-properly/paged/3#post-978 Sat, 11 Oct 2025 14:34:27 +0000 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 work well if I only read from my 0x38 device but it hangs up the UPS when I write a singe Byte to the UPS...

But ok - I'll try with 25k...

 

]]> UPS PIco HV4.0B/C ryf https://pimodules.com/community/ups-pico-hv4-0b/i2c-not-working-properly/paged/3#post-978