Regarding issue : STEVAL-SPIN3202 design

[Shubham08]

I have used STEVAL-SPIN3202 evaluation board for Pump application after finalizing the code i have tried to make my custom board from the existing schematic but faced with many issues as listed below

1) From the existing schematic i have removed the programmer part and kept the pins open for connecting it through external stlink programmer to upload.

2) out the 4 board that was designed and assembled issues like one board was working fine but the debugging through uart pin was not possible, even though i have connected logic analyzer to check if data is transmitted by the mcu or not.

3) In some board the PWR LED was not turned on, but as the was assembled same as the working one with same components values.

Waiting for STEVAL-SPIN3202 ST team response for detailed explaination of the issue

[Hl_st]

Hello,

for the 2) MCU can be debugging through Serial Wire Debug (SWD) interface (SWD_CLK, SWD_IO pins) not through UART. Through UART can be MCU programmed or it can be used to send some data from MCU to PC if MCU is programmed to do it.

for the 3) Can you attached schematic of your board please? Did you measure a correct voltage on those LEDs? Are those LEDs connected in a correct polarity?

[Shubham08]

I have attached the schematic of the board.

Yes on board the VDD is 3V3 but Vin/Main supply is led is not ON also i checked the voltage across C301 and C302 it is 12V as i was powering 12V supply