GPIO Drive Strength Config for SDIO Pins #206
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Allows configuration of the SDIO pins' drive strength as another potential mitigation against electrically noisy environments.
The GPIODriveStrength config param under [SDIO] can be set to the values 1 through 4, with a default value of 2.
The mapping is as follows:
GPIODriveStrength=1: 2mA drive
GPIODriveStrength=2: 4mA drive (Pico SDK defaults here)
GPIODriveStrength=3: 8mA drive
GPIODriveStrength=4: 12mA drive
I have tested all of these settings on my 7300 and they all passed benchmarks and copied files without error.
Example INI config: