NUCLEO-H743ZI and X-NUCLEO-CCA02M1 Digital MEMS Microphones expansion board

[SWood.8]

Just working on some audio projects and purchased the CCA02M1. I can't find any documentation confirming that the H7 supports this expansion card. Nothing on Google so asking here.

Second question. My NUCLEO-H743ZI cannot be connected to the CCA02M1 via the CN7/CN10 bus (non conflicting pads in use), but as I am only using 1 microphone and will be implementing this in production using a single microphone over Digital filter for sigma delta modulators (DFSDM)

. I don't want to have to mess around with the 11 solder bridge connections and would rather just direct wire Vdd, GND, LR along with DFSDM1_CKOUT and DFSDM1_DATIN1 onto the H7. Can I just wire the 6 circles pins surrounding the MEMS microphone, and if so what are the Pins 1-6. This also is not readily documented as far as I can see

[gvigelet]

There is no direct demonstration project for that board but you can port the STM32L476RG-Nucleo example project to the NUCLEO-H743ZI board which will be vary similar. I did do a port to the Nucleo 767 board and ended up changing the solder bridge connections to support DFSDM, I think the default setup was for I2S implementation. The mono implementation should be identical setup to the stereo setup except you will only capture the data on one clock edge.

[SWood.8]

Thanks! I have managed to couple both boards together using just the 4 wires, hopefully this will work. Trying to develop some FFT proofing tools now derived from this awesome individual:

https://github.com/araobp/ultrasonic-communication/tree/master/experiments/basic

But currently roadblocked with "undefined reference to `arm_rfft_fast_init_f32'" and every other arm_ tool in the arm_maths toolbox. Worked through every suggestion so far with Symbols updated (ARM_MATH_CM7 and __FPU_PRESENT with Value = 1) and now trying to add some library references to "...CMSIS/Lib/GCC".. will eliminate the wrong turns and keep studying before starting another Question. Thought I'd mention this incase you came acrross the same problem. I am using TrueSTUDIO