Interfacing serial flash W25Q32 with nRF52833dk

RE: Interfacing serial flash W25Q32 with nRF52833dk

Ubaid_M — Fri, 21 Jan 2022 06:31:11 GMT

Hello Kenneth,

I need to connect two serial flash ICs, one "w25q32jv" and another "IS25LQ040B", on the same SPI peripheral like &spi3 {

1. Kindly suggest how my dts file will look like in this case..?
2. And how will my main.c with serial flash operations will look like..?

Request you to help me with a sample project for the same

Thanks,

Ubaid

RE: Interfacing serial flash W25Q32 with nRF52833dk

Ubaid_M — Wed, 19 Jan 2022 13:19:01 GMT

Hello Kenneth,

Many Thanks,

This is what I needed:

&spi3 {
	compatible = "nordic,nrf-spim";
	status = "okay";
	sck-pin = < 11 >;
	mosi-pin = < 9 >;
	miso-pin = < 28 >;
	cs-gpios = < &gpio0 7 GPIO_ACTIVE_LOW >;
	w25q32jv: w25q32jv@0 {
		compatible = "jedec,spi-nor";
		label = "W25Q32JV";
		reg = < 0 >;
		spi-max-frequency = < 40000000 >;
		wp-gpios = < &gpio0 8 GPIO_ACTIVE_LOW >;
		hold-gpios = < &gpio0 10 GPIO_ACTIVE_LOW >;
		size = < 0x2000000 >;
		has-dpd;
		t-enter-dpd = < 3000 >;
		t-exit-dpd = < 30000 >;
		jedec-id = [ ef 40 16  ];
	};

1. Can you kindly point me on how the dts declaration will change, if I am using "IS25LQ040B"..?

2. Please help me with the main.c code as well for serial flash operations, I couldn't find it in

[quote userid="2111" url="~/f/nordic-q-a/83797/interfacing-serial-flash-w25q32-with-nrf52833dk/348493#348493"]Can you take a look at this thread?[/quote]

Thanks,

Ubaid

RE: Interfacing serial flash W25Q32 with nRF52833dk

Kenneth — Wed, 19 Jan 2022 12:31:58 GMT

Can you take a look at this thread?
https://devzone.nordicsemi.com/f/nordic-q-a/81887/nrf9160-spi-flash-for-cellular-firmware-download/342527#342527

In principle the same approach should work for the nRF52833. For the nRF52833 you likely should use eitehr spi1 or spi3, since those are enabled by default (status ="okay";):
https://github.com/nrfconnect/sdk-zephyr/blob/main/boards/arm/nrf52833dk_nrf52833/nrf52833dk_nrf52833.dts#L182

Kenneth