nRF5340 and W25Q512NW Nor Flash R/W problem?

[G gautam]

Hello,

I am using W25Q512NW (https://www.winbond.com/resource-files/W25Q512NW%20RevB%2007192021.pdf) in my custom board. I want to store the sensor data in this flash.

My custom board use the nRF5340 MCU and the version of the nrf connect sdk is V2.5.2.

the problem i am facing that i am not able to read the data from the flash.

 

*** Booting nRF Connect SDK v2.5.2 ***
[00:00:00.252,868] <inf> main: iMedrix External flash Application Started.

Device name: w25q512nw@0
Data written. Good!!
23 22 33 44 55 66 77 88 
Data read. Good!!
FF FF FF FF FF FF FF FF 
Data not matched..!!
JEDEC ID : EF  60  20 

In above log, i am writing 8 bytes and also read those 8 bytes. but when i read data from the flash i am getting only FF. 
And when i read the JEDEC id of the flash, i am getting right JEDEC id.

Here is the prj.conf file.

# Logger module
CONFIG_USE_SEGGER_RTT=y
CONFIG_RTT_CONSOLE=y
CONFIG_LOG_BACKEND_RTT=y
CONFIG_LOG=y
CONFIG_LOG_MODE_DEFERRED=y
CONFIG_LOG_SPEED=y
CONFIG_UART_CONSOLE=n

CONFIG_DEBUG=y


# spi Configuration
CONFIG_SPI=y

#External flash configuration
CONFIG_FLASH=y
CONFIG_FLASH_JESD216_API=y
CONFIG_FLASH_PAGE_LAYOUT=y


CONFIG_NEWLIB_LIBC=y

Here is the .overlay file below.

 

&qspi {
	status = "okay";
	pinctrl-0 = <&qspi_default>;
	pinctrl-1 = <&qspi_sleep>;
	pinctrl-names = "default", "sleep";
	w25q512: w25q512nw@0 {
		compatible = "nordic,qspi-nor";
		reg = <0>;
		/* MX25R64 supports only pp and pp4io */
		writeoc = "pp4io";
		// writeoc = "pp4o";
		/* MX25R64 supports all readoc options */
		readoc = "read4io";
		sck-frequency = <8000000>;
		// jedec-id = [c2 28 17];
		jedec-id = [EF 60 20];
		sfdp-bfp = [
  			e5 20 fb ff  ff ff ff 1f  44 eb 08 6b  08 3b 42 bb
  			fe ff ff ff  ff ff 00 00  ff ff 40 eb  0c 20 0f 52
  			10 d8 00 00  33 02 a6 00  81 e7 14 d9  e9 63 76 33
  			7a 75 7a 75  f7 bd d5 5c  19 f7 5d ff  e9 70 f9 a5
  		];
		size = <536870912>;
		// address-size-32;
		has-dpd;
		// t-enter-dpd = <10000>;
		// t-exit-dpd = <35000>;
		t-enter-dpd = <3000>;
		t-exit-dpd = <30000>;
	};
};

Please give me your suggestion in this.  

Let me know if any modification is required.

Thank you in advance.

Gautam.

[Simonr]

Hi

Okay, do you have a logic analyzer available so you can see whether data is actually going on the IO lines between the nRF5340 and W25Q512NW to see that the data is actually written correctly onto the external flash.

Best regards,

Simon

[G gautam]

Hay Simonr,

Sorry for the late replay,

Actually, I test the flash with different different scenarios and i found that the flash is become hardware write protected(SRP bit of the status_regster_1 is 1) but it should be software protected(SRP bit of the status_register_1 should be 0(zero)).

I try with standard SPI protocol, and its works perfectly, i mean flash is not hardware write protected(SRP bit of the status_register_1 is 0(zero)).    

Should is there any problem with the nrf_qspi_nor driver?

[Ilam]

Hey Simon,

Can you please help me with standard SPI - write\read functions which can be used to enable the QE bit in SR2

Thanks

[Ilam]

G gautam said:

standard SPI protocol

Hi Gautam,

Can you share the config and help me use standard SPI - write\read functions and Can you please explain how you disabled WP and enabled QE for QSPI .

Thanks