B-WL5M-SUBG1 (MB1779B) and V3minie

[dam74]

Hi,

i'm trying to work with Sigfox and MB1779B board.

I try to connect with cube programmer and V3miniE.

here is the log :

is there a procedure to connect to board ?

thank you

[Andrew Neil]

Please show your wiring between the V3miniE and the B-WL5M-SUBG1 (MB1779B).

[dam74]

 

[Andrew Neil]

are you sure you have that ribbon cable the correct way around?

[dam74]

it's a foolproof device, isn't it ?

i'm working with a lsm100A, and it's ok.

thank you, I'm going to check wiring

[aweber_schaller]

Try using "Hardware reset" - the default setting is "Software reset"

[dam74]

this is my conf :

 

[dam74]

I've tried differents Modes....

[aweber_schaller]

Looks like you have removed JMP2!

If jumper removed, the VDD is disonnected from 3V3 so the STM32WL5MOCH6S has no power!

JMP2 can be used for current measurement.

 

 

[Andrew Neil]

---

@aweber_schaller wrote:

Looks like you have removed JMP2!

If jumper removed, the VDD is disonnected from 3V3 so the STM32WL5MOCH6S has no power!

---

That seems like a really poor design choice on the debug connector:

So the debug probe will report that the target has power - when it doesn't!

As shown in the OP:

@STTwo-32 

[dam74]

thank you very much for your help !