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carlk3 / no-OS-FatFS-SD-SDIO-SPI-RPi-Pico

A FAT filesystem with SDIO and SPI drivers for SD card on Raspberry Pi Pico
Apache License 2.0
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Does this board support SDIO mode #12

Open langyxxl opened 7 months ago

langyxxl commented 7 months ago

https://www.waveshare.com/wiki/RP2040-GEEK

carlk3 commented 7 months ago

The requirements are:

Pins CLK_gpio, D1_gpio, D2_gpio, and D3_gpio are at offsets from pin D0_gpio. The offsets are determined by sd_driver\SDIO\rp2040_sdio.pio. CLK_gpio = (D0_gpio + SDIO_CLK_PIN_D0_OFFSET) % 32; As of this writing, SDIO_CLK_PIN_D0_OFFSET is 30, which is -2 in mod32 arithmetic, so: CLK_gpio = D0_gpio -2. D1_gpio = D0_gpio + 1; D2_gpio = D0_gpio + 2; D3_gpio = D0_gpio + 3;

Looking at the schematic, I'd say it should work fine:

image