Thanks Leigh, Yes could well be the cause.

Here's the remapping guide for the E-block board from ST Port pins to E-blocks Port Pins if it's useful.

Hello,

Thanks for letting us know. We have a meeting this week and I'll raise the topic of looking at the Renesas chips.

Hello Stefan, As I say we have it working great on the ESP32S3 so not sure wehat the problem is here. This is my firmware project file and the part that initialises the card. We are sure the card is running as we put bitmaps and font data onto the card and that's all working great. Screenshot 2026-0...

Looking at your project you have a C code icon near the top of your program, this is not required and could be causing issues. You could also maybe try disabling the call to the other SPI while you are debugging the screen to see if that can help as it's sharing pins with the display component. I've...

Hi Rod, Thanks for the details analysis and explanation and also bearing with us. I'm looking into it now and hopefully will have a solution for you ASAP. Just so you're aware the component source files are available in the wiki so if you ever need to make a change to a component you can do so but o...

Hi Bob,

It would help me a lot to be able to see you're measurement circuit. That way I will be able to confirm if my assumptions about how you've wired things are correct.

This might do it

I have two ADC components, one using VCC and another using FVR.

I read the VCC ADC and use that to get the ball park voltage. If it's more suited to an FVR range then I switch to the best option.

Ideally you want to drive the potential divider from 5V and then adjust the ADC settings and FVR based on the resistance. For low values of resistor you want to use VCC as the reference. Then as the resistance gets higher and higher the voltage across R2 will drop and so switching to FVR and if need...

This one is maybe slightly more accurate as the FVR voltage is defined more precisely.

How's this. I've just reworked your formula a bit and assumed the potential divider is driven from 5V.

You could potentially drive the potential divider from the DAC which can also work with the FVR if that would help.