Hello,
I am in the process of laying out the schematic for the H4 on KiCad.
My version will have the STM32F446RE chip, that has a whole lot more memory and speed.
Anyway, I cannot resolve (find) the following things:
On the CODEC/processor MCLK, I2S_DIN
Others may comment on this problem: the 446RE does not have pin PB11 for I2S_WCLK
I am not sure how, or even if, the I2S is being used.? More research on the 446RE I2S capabilities
will be required.
The 446RE has 64 pins, which allows the FULL Port C, and even a PD2 pin.? I will break out the extra
lines into some sort of pin conditioning circuits to allow more I/O.
The graphical display, touch screen, and USB allows for a great development platform.
73
Glen K4KV