Qspi flash sample project error

[jspiller]

Hello, I am trying to use the spi_flash sample project with a laird bl654 dvk. When I run the project however, dev->state->init_res = 19 and will not run for me. It recognizes the device and if I manually set the error code to 0 the project runs correctly. Any idea why this is occurring. The output is 

JEDEC QSPI-NOR SPI flash testing
==========================
SPI flash driver MX25R64 was not found!

This is a onboard flash that supposedly should work from this post https://devzone.nordicsemi.com/f/nordic-q-a/64769/qspi-flash-sample-in-zephyr. I am using sdk 1.9.1.

[Håkon Alseth]

Hi,

 

For the example to work, you must define a $(board).overlay and $(board).conf file in the boards catalog of the example.

In your case it would be boards/bl654_dvk.conf and boards/bl654_dvk.overlay.

You should follow the setup similar to how it is done for the nRF52840-DK, with QSPI being enabled:

https://github.com/nrfconnect/sdk-zephyr/blob/main/samples/drivers/spi_flash/boards/nrf52840dk_nrf52840.conf#L8

 

And the MX25R64 itself being defined in the board:

https://github.com/nrfconnect/sdk-zephyr/blob/main/boards/arm/nrf52840dk_nrf52840/nrf52840dk_nrf52840.dts#L209-L235

 

Kind regards,

Håkon

[jspiller]

Hi,

Those are the steps I took to receive that message. Not sure how to proceed from there. I have also closed all the bridges required for the qspi flash.

Thanks,

Jacob

[Håkon Alseth]

Hi,

 

jspiller said:

I just tried putting that line in, but it throws "parse error: undefined node label 'mx25r6435f'"

Sorry for that, it seems that this peripheral/node isn't required to delete.

This is the overlay and conf file that I placed in the board folder for the bl654_dvk:

bl654_dvk.conf

bl654_dvk.overlay

 

The pin-outs are edited to match the nRF52840-DK, as I do not have this module at-hand.

This ran as expected when flashed:

*** Booting Zephyr OS build v2.7.99-ncs1  ***

JEDEC SPI-NOR SPI flash testing
==========================

Test 1: Flash erase
Flash erase succeeded!

Test 2: Flash write
Attempting to write 4 bytes
Data read matches data written. Good!!

[jspiller]

I just tested it on a nRF52840dk and it worked as you saw as well. It is something specific to the bl654 module then that is causing an issue. Any idea what that might be?

[Håkon Alseth]

Hi,

 

Have you connected an external qspi flash or are you using the internal one on the bl654-dvk?

Have you checked that the on-board spi flash has routed all the qspi pins?

 

Kind regards,

Håkon

[jspiller]

There is a optional external qspi that comes on the dev kit. I followed the instructions shown here:

And configured the qspi as such:

&qspi {
	status = "okay";
	sck-pin = <14>;
	io-pins = <9>, <13>, <12>, <11>;
	csn-pins = <16>;
	mx25r64: mx25r6435f@0 {
		compatible = "nordic,qspi-nor";
		reg = <0>;
		/* MX25R64 supports only pp and pp4io */
		writeoc = "pp4io";
		/* MX25R64 supports all readoc options */
		readoc = "read4io";
		sck-frequency = <8000000>;
		label = "MX25R64";
		jedec-id = [ c2 28 17  ];
		sfdp-bfp = [ e5 20 f1 ff ff ff ff 03 44 eb 08 6b 08 3b 04 bb ee ff ff ff ff ff 00 ff ff ff 00 ff 0c 20 0f 52 10 d8 00 ff 23 72 f5 00 82 ed 04 cc 44 83 68 44 30 b0 30 b0 f7 c4 d5 5c 00 be 29 ff f0 d0 ff ff  ];
		size = <67108864>;
		has-dpd;
		t-enter-dpd = <10000>;
		t-exit-dpd = <35000>;
	};
};

Does this seem correct?

[Håkon Alseth]

Hi,

 

This is the physical GPIO mapping on the nRF52840-DK:

 

Which corresponds to this in DTS:

&qspi {
	status = "okay";
	sck-pin = <19>;
	io-pins = <20>, <21>, <22>, <23>;
	csn-pins = <17>;
	...
};

 

Are you certain that your DTS setup is correct as per the bl654 schematic?

sck-pin should be 19, csn should be 17, and io-pins should be 20-23, atleast how I read their schematic.

 

Kind regards,

Håkon

[jspiller]

From the datasheet here https://www.lairdconnect.com/documentation/datasheet-bl654 page 12 has the pinout of the bl654 board with their equivalents on the nRF52840. I believe they are equivalent.

[Håkon Alseth]

No, you're setting the physical pin number, while you should set the GPIO number.

Could you please try the suggestion that I previously posted?

Håkon Alseth said:

Are you certain that your DTS setup is correct as per the bl654 schematic?

sck-pin should be 19, csn should be 17, and io-pins should be 20-23, atleast how I read their schematic.

Kind regards,

Håkon

[jspiller]

I see, thank you. However the same problem still arises with either pin configuration. Here is my full project:

spi_flash_bl654.zip

[Håkon Alseth]

Hi,

 

Looks like a number snuck into the csn definition:

	csn-pins = <117>;

It seems that the bl654 board has copied the same pinout as the nRF52840 DK, so you can just copy the definitions from here:

https://github.com/zephyrproject-rtos/zephyr/blob/zephyr-v2.7.1/boards/arm/nrf52840dk_nrf52840/nrf52840dk_nrf52840.dts#L209-L235

 

Kind regards,

Håkon

[jspiller]

Hi,

Yes, sorry about that. It must've been a typo from when I changed it back regarding your last message. However, using the pin configuration from the github link you sent is the starting point for me from when I started the post and still does not work.