What's the FW configuration and how to change it in Nucleo-68 board?

[KKIM.6]

I want to test the power supply without Vsmps. So, I have to connect the VDD to the Vlxsmps, Vfbsmps in the Nucleo-68 board.

Fortunately, the Nucleo-68 board already has a current path called SB31 but there is an extra description "FW configuration needed" looks like below.

 

Here is my question.

What's the FW configuration and How to change it in this board?

[Remy ISSALYS]

Hello,

In order to use SMPS feature, for FW configuration, you have to define the following variable in app_conf.h file:

/**
 * SMPS supply
 * SMPS not used when Set to 0
 * SMPS used when Set to 1
 */
#define CFG_USE_SMPS 0

Best Regards

[KKIM.6]

I'm a little bit confused because SB31 looks like a diode or kind of thing.

How we can open/close the SB31 using microcontroller programming?

[Remy ISSALYS]

Hello,

SB31 is a solder bridge which can be open or close and on firmware side you can choose to use or not the SMPS with the define in app_conf.h file.

Best Regards