BQ27Z746: BQ27Z746 哪种格式golden image文件会包含以下Protector calibtation 校准过的类容?

您好，The calibration values are part of the firmware image and therefore programming firmware will change it.

SREC文件应该包含calibration value

实际测试SREC文件不包含Protector calibtation 的参数，烧录srec并不会按照校准过的Protector进行更改

您好，正在询问更了解这款芯片的TI工程师，稍后回复。

您好，请参考下面的内容

The data memory value does not affect the actual value of the protection set, there is a separate secure memory location for the protection that is not apart of the golden image files and needs to be added.

There are 2 options, they can calibrate each gauge in production with a reference voltage for high accuracy, or they can use the protector tuning function for lower accuracy but can just write to the register in production instead of needing a reference voltage.

Sounds like they need option 2 which is using the protector tuning. To use this option they need to have a new gauge and set the protection values desired via the protector tuning method. They can not use a gauge that has previously been set using protector threshold. They can then read these values out via register F0A2, this can be done with Advanced Comm in BQStudio.

I2C address: AA

Starting register: 3E

A2 F0 write then read

They will get something like this:

A2 F0 01 00 0E 23 20 08 08 08 09 08 5F 5F 43 5B 32 04 5B 5C 5B 5C 08 08 10 17 07 08 09 11 09 11 00 00 78 22

The bolded values are the actual protection values set on the gauge bytes 10~19

In production they need to write only these values to all gauges. Its very important to only write bytes 10~19 and to not corrupt the surrounding reserved bytes