RE: Fat FS on Xiao BLE (nRF52840) based board

Qwelectric — Tue, 21 May 2024 12:21:59 GMT

Ohhh is that so. So I just need to set the CS pin and it should be able to detect the SD Card? Of course assuming I already have a code in the main.c. Thank you for you fast response!

RE: Fat FS on Xiao BLE (nRF52840) based board

Turbo J — Tue, 21 May 2024 12:14:38 GMT

The sd card won't be mapped to the addressable space in flash, thus you also don't assign a partition in DT.

One example for the NRF53x using P1.12 as the CS signal:

&spi4 {
	status = "okay";
	cs-gpios = < &gpio1 12 GPIO_ACTIVE_LOW >;
	sdhc-spi-slot@0 {
		compatible = "zephyr,sdhc-spi-slot";
		reg = <0x0 >;
		spi-max-frequency = <16000000>;
		status = "okay";
		mmc {
			compatible = "zephyr,sdmmc-disk";
			status = "okay";
		};	
	};
};