Flowcode Support Board

Posted: **Wed Jul 23, 2025 9:52 am**

Hi to All

If I use the MCP356x1 init macro I get an error.

C:/Users/Desktop/esp-idf-2/mtxesp32s_sdkconfig/main/esp-project.c: In function 'FCD_07892_ADC_MCP356X1__Initialise':
C:/Users/Desktop/esp-idf-2/mtxesp32s_sdkconfig/main/esp-project.c:533:10: error: 'FCR_RETVAL' is used uninitialized [-Werror=uninitialized]

Posted: **Wed Jul 23, 2025 3:08 pm**

Hi Stefan,

Thanks for letting us know, hopefully resolved for you now via library updates.

Posted: **Wed Jul 23, 2025 3:27 pm**

Hi Ben

Yes. Perfect! It's working.
Thank you very much.

Stefan

Posted: **Mon Aug 04, 2025 11:16 am**

Hi Ben

I can compile, but when I send measured values to uart, I get an invalid device handle from SPI instead of measured values.

from my terminal program:

: 2025-08-04_12-09-27.PNG (32.5 KiB) Viewed 585 times

Posted: **Tue Aug 05, 2025 9:06 am**

Hi Ben

It's working now.
First I tested in software mode SPI and it was ok.

Then I reduced the prescale from 40Mhz to 20Mhz like in the pdf from the MCP35x1 and now the value are ok and no messages

reduced:

: SNAG-0020.PNG (63.01 KiB) Viewed 565 times

result:

: 2025-08-05_09-58-09.PNG (89.09 KiB) Viewed 565 times

Flowcode Support Board

MCP356x1 Init problem

MCP356x1 Init problem

Re: MCP356x1 Init problem

Re: MCP356x1 Init problem

Re: MCP356x1 Init problem

Re: MCP356x1 Init problem