Hi,
We had some problem with bq78350:
Q1: The bqstudio can communicate with device, and can program and readback firmwave. However, the programmed and readback data are not byte-to-byte identical (actually differ in all lines). Please see attachment.
(Please visit the site to view this file)
Q2: data flash cannot be programmed. For example,
“Permanent Failure”->”Enable PFA” cannot be written
So is “AFE cell map”.
Bqstudio status bar (bottom) shows “a read of data written failed comparison.”
Q3: there is no way to turn CHG/DSG pins on bq76930 on (pin 1,2). In addition to data flash “Permanent Failure”->”Enable PFA” attempt, we also tried 0x0020 ManufacturerAccess() 0x0020 DSG FET command, but AFE’s pin 1 remains low.
Q4: Tech reference ch 17 and 18 didn’t show the SMBus command format to write/read data flash. Please give some instruction.
Several days of fruitless work spent. Please help!!
Calino