Hello experts,
I want to read out new Chksum in data memory after writing new Chksum because to confirm whether it is written a correct value. I saw a following instruction to calcurate Chksum.
https://e2e.ti.com/support/power-management/f/196/t/615263?tisearch=e2e-sitesearch&keymatch=BQ27220%20checksum
> 1. Enter CFG_UPDATE mode
> 2. Write the address AND the parameter data to 0x3E+ (auto increment)
> 3. Calculate the check sum: 0xFF - (sum of address and data) OR 0xFF
> 4. Write the check sum to 0x60 and the total length of (address + parameter data + check sum + length) to 0x61
> 5. Exite CFG_UPDATE mode
Customer should read new Chksum after complete step 4, but customer mentioned that it is not same value of step 4(new Chksum). Is it wrong way to read out new Chksum after completing step 4?
Best Regards,
Fujiwara
