SoftDevice and accessing NRF_FICR data

[BZM]

NRF52 devices and Softdevice 132:

According to SoftDevice specification v5.1 Table 4: Peripheral protection and usage by SoftDevice
NRF_FICR data such as ->INFO.PART, DEVICEID[0/1], and INFO.VARIANT
are not available when SoftDevice is enabled; and surprisingly when SoftDevice is disabled.
How can one then read the above information registers with SoftDevice  on or off?

[bjorn-spockeli]

Hi BZM, 

you should be able to read register values using the register address from restricted peripherals when the SoftDevice is enabled. Its write and erase using the NVMC that is blocked. 

Best regards 

Bjørn 

[Gauthier]

When you write "restricted", do you mean "blocked"? FICR is not only restricted according to the SDS, but blocked, both with SD enabled or disabled.

[bjorn-spockeli]

Hi Gauthier, 

As stated in the nRF52832 Product Specification:

Factory information configuration registers (FICR) are pre-programmed in factory and cannot be erased by
the user. These registers contain chip-specific information and configuration.

So blocked in the SDS means that the application is not allowed to modify the content, which isn't possible anyway. All though something is labeled as "Blocked"you are still able to read the register, its writing that is blocked. 

Best regards

Bjørn