nrf52840-QFAA spi flash or qspi mode High power consumption when used P0.05->WP P0.07->MISO P0.08->CS P0.11->CLK P0.12->MOSI P1.09->HOLD

[xht1987]

&spi0 {
	compatible = "nordic,nrf-spim";
	cs-gpios = <&gpio0 8 GPIO_ACTIVE_LOW>;
	pinctrl-0 = <&spi0_default>;
	pinctrl-1 = <&spi0_sleep>;
	pinctrl-names = "default", "sleep";
	status = "okay";
	zephyr,pm-device-runtime-auto;

	zd25wq32: zd25wq32@0 {
		compatible = "jedec,spi-nor";
		status = "okay";
		reg = <0>;
		spi-max-frequency = <DT_FREQ_M(8)>;
		jedec-id = [BA 60 16];
		size = <DT_SIZE_M(4)>;
		has-dpd;
		//t-enter-dpd = <10000>;
		//t-exit-dpd = <35000>;
		//wp-gpios = <&gpio0 5 (GPIO_ACTIVE_LOW)>;
		//hold-gpios = <&gpio1 9 (GPIO_ACTIVE_LOW)>;
	};
};

&spi0_default {
	group1 {
		psels = <NRF_PSEL(SPIM_SCK, 0, 11)>,
		  <NRF_PSEL(SPIM_MOSI, 0, 12)>,
		  <NRF_PSEL(SPIM_MISO, 0, 7)>;
	};
};

&spi0_sleep {
	group1 {
		psels = <NRF_PSEL(SPIM_SCK, 0, 11)>,
			<NRF_PSEL(SPIM_MOSI, 0, 12)>,
			<NRF_PSEL(SPIM_MISO, 0, 7)>;
		low-power-enable;
	};
};

 it will take about 25uA~ 28uA.

when I remove R18 R19, set io to input with pullup, it will take about 10uA,

&button1 {

    gpios = <&gpio0 5 (GPIO_ACTIVE_LOW|GPIO_PULL_UP)>;

};

&button2 {

    gpios = <&gpio1 9 (GPIO_ACTIVE_LOW|GPIO_PULL_UP)>;

};

this spi flash I have used in Other hardware，it take 4uA， used P0.24->MISO P1.00->CS P0.20->CLK P0.22->MOSI. I do not know why it High power consumption.

[xht1987]

I noticed that these io ports are TRACE, I don't know if it has something to do with this

[Simonr]

Hi

Are you using a DK or a custom board when testing this on your end? If you're using a DK, then this increase in current could be because the pins P0.05-P0.08 are by default also used for UART, so the current consumption could come from that. Can you share some more on what the differences between the current and previous versions of the HW is here? Is it only the pins used, or also something else? Perhaps you're using a different SPI Flash now than earlier?

Best regards,

Simon

[xht1987]

custom board，I didn’t suspect that the deep sleep of the flash chip would have problems before. From the test results of 10 PCBAs, it seems that there is a problem with the flash. And I need more time and testing to finalize the problem and communicate with the flash manufacturer. Thank you

[xht1987]

I tested the example of thread cli. I found that the power consumption of 2.8.0sdk is indeed not reduced（10uA）, but there is no problem with 2.6.2

[Simonr]

What current consumption are you seeing with NCS 2.6.2 exactly? Let me know when you've communicated with the flash manufacturer and has some action points for us.

Best regards,

Simon