Why the device serial number in BlueNRG1 is incorrect

[cgh21]

Posted on December 08, 2017 at 08:44

I found there is an uniq device serial number in BlueNRG1 datasheet, and it's address in 0x100007F4, but when I try to read it, they are all 0xFF, and the memory content in keil memory dialog is all 0xFF. My board is IDB007V1.