PPK2 calibration offsets corrupted in EEPROM

[MarcoR]

Hello,

My PPK2 (PCA63100, rev 1.1.2, build code 2026.8) reports corrupted calibration offsets: O0/O2 ≈ 4.06e31, O3 ≈ −2.8e15, O1/O4 ≈ 0, and the Power Profiler app shows readings in the yottaampere range. All the other values (R, GS, GI, S, I, UG) are intact. Most likely the EEPROM was overwritten when a script of mine sent the opcodes 0x15/0x16 (SpikeFilteringOn/Off) to the unit, which was then running firmware older than 1.2.0. The symptom matches this open thread.

Since then I have updated the unit to firmware 1.2.4 through Power Profiler 4.4.1. Its shell offers metadata write and metadata backup recover, but:

• metadata backup valid says the backup is valid, yet metadata backup read shows the same corrupted offsets;
• metadata write -h only prints "Write metadata", with no arguments described.

I have this unit's offsets as it reported them over GET_META_DATA before the corruption.

Could you tell me:

1. the syntax of metadata write to restore O0–O4, or the supported way to restore the calibration;
2. if that is not possible, the factory calibration values for this unit?

Thanks!

[Kenneth]

Hello,

Can you share the serialnumber of the PPK2 you have? I'll see if we can find the original values.

Kenneht

[MarcoR]

Hello Kenneth,
The serial number is E5C4F6C5D929.

Thanks!

[Kenneth]

Try:

metadata write "Calibrated: 0,R0: 992.77320,R1: 100.14980,R2: 10.06090,R3: 0.93880,R4: 0.05530,GS0: 0.00000,GS1: 70.41790,GS2: 12.26760,GS3: 1.72820,GS4: 0.05410,GI0: 1.00000,GI1: 0.98000,GI2: 0.97350,GI3: 0.96650,GI4: 0.96900,O0: 77.16933,O1: 51.71079,O2: 44.72516,O3: 33.66027,O4: 59.42044,S0: 0.00000,S1: 0.00000,S2: 0.00001,S3: 0.00010,S4: 0.00380,I0: -0.00000,I1: -0.00000,I2: 0.00001,I3: -0.00042,I4: -0.01199,IA: 56.00000,END,"