No inputs after emonpi new SD card and CM firmware update

[rupert]

Hi @PeteF

Been there, done that (almost)!

see:

Updating an emonPi to emonPi_CM

My emonPi has been left untouched since it was installed in about September 2021. I thought it would be a good idea (!) to update it to the latest emonPi_CM software. This would give the benefits of the emonPi_CM continuous sampling firmware, and moving to the Low Power Labs (LPL) radio format to get the the packet acknowledgment and retry features. Before I started, I had updated the emonCMS to the latest version. My experiences: I used the emonPi_CM update process to do the update from the…

Should I update Emon Pi firmware to CM, and how?

I have just an emonpi, no other kit, so I don’t use radio to transfer info. I regularly update the software on the pi via the admin page on its website. I do a “full update”. I recently noticed that this doesn’t update the firmware, so after a bit of reading, I decided to update to the Continuous monitoring version, chosing port ttyAMA0, hardware emonpi, radio format RFM69 Low power labs, Firmware …continuous monitoring… V1.1.4. The update process shows on screen, then it appears to load an…

https://docs.openenergymonitor.org/emontx4/technical.html

Sorry for a lot of reading!

Briefly, from your log, you have updated the atmega328 processor firmware on the emonPi data collection/RF comms board to emonPi_CM_LPL_1_1_4.hex .

This has the following effects:

1. It updates the power measurement method from discrete sampling to continuous measurement.
2. it updates the 433MHz Radio communication format from JeeLib Classic to LPL (Low Power Labs).
3. it changes the serial data format between the emonPi data collection/RF comms board and the Raspberry Pi over the ttyAMA0 serial interface.

meaning from above

1. this is perhaps what you wanted.

2. your emonTx3s and, If they are not recent, emonTHs will be using the JeeLib Classic radio format and will no longer be able to talk wirelessly to the emonPi, unless they too are upgraded to LPL radio format, or the emonPi is downgraded to JeeLib Classic.

3. The data format and speed of the ttyAMA0 serial interface will have changed so that both the emonHub interfacer and node definitions will need to be edited.

I think one way way to get back to where you were, might be to do a firmware upgrade on the emonPi to: (I haven’t tried this)

select port: ttyAMA0
Hardware: emonPi
Radio Format: RFM69 JeeLib Claasic
Firmware: emonPi Discrete Sampling Firmware, JeeLib Classic, V2.03

I am assuming that the ‘emonPi Discrete Sampling Firmware, JeeLib Classic, V2.03’ doesn’t include the LPL changes to the data format and speed of the ttyAMA0 serial interface.

Hopefully this will (may?) get you up and running again while you decide what you want to do!

To help your choices - I don’t think that you can get Continuous Monitoring on the emonPi if you use the JeeLib Classic radio format.