full_modem_update: "Failed to get flash device: MX25R64"

Question

I am trying to bring in the spi_nor driver into our project and was getting errors reading back the jedec id on initialisation so I tried to run the nrf/samples/nrf9160/http_update/full_modem_update sample on my nrf9160dk board and am getting the same error there. 
 HW v1.0.0 
 NCS v1.5.0 
 See log below 
 *** Booting Zephyr OS build v2.4.99-ncs1 ***␍␊
Flash regions⇥	⇥	Domain⇥	⇥	Permissions␍␊
00 00 0x00000 0x08000 ⇥	Secure⇥	⇥	rwxl␍␊
01 31 0x08000 0x100000 ⇥	Non-Secure⇥	rwxl␍␊
␍␊
Non-secure callable region 0 placed in flash region 0 with size 32.␍␊
␍␊
SRAM region⇥	⇥	Domain⇥	⇥	Permissions␍␊
00 07 0x00000 0x10000 ⇥	Secure⇥	⇥	rwxl␍␊
08 31 0x10000 0x40000 ⇥	Non-Secure⇥	rwxl␍␊
␍␊
Peripheral⇥	⇥	Domain⇥	⇥	Status␍␊
00 NRF_P0 Non-Secure⇥	OK␍␊
01 NRF_CLOCK Non-Secure⇥	OK␍␊
02 NRF_RTC0 Non-Secure⇥	OK␍␊
03 NRF_RTC1 Non-Secure⇥	OK␍␊
04 NRF_NVMC Non-Secure⇥	OK␍␊
05 NRF_UARTE1 Non-Secure⇥	OK␍␊
06 NRF_UARTE2 Secure⇥	⇥	SKIP␍␊
07 NRF_TWIM2 Non-Secure⇥	OK␍␊
08 NRF_SPIM3 Non-Secure⇥	OK␍␊
09 NRF_TIMER0 Non-Secure⇥	OK␍␊
10 NRF_TIMER1 Non-Secure⇥	OK␍␊
11 NRF_TIMER2 Non-Secure⇥	OK␍␊
12 NRF_SAADC Non-Secure⇥	OK␍␊
13 NRF_PWM0 Non-Secure⇥	OK␍␊
14 NRF_PWM1 Non-Secure⇥	OK␍␊
15 NRF_PWM2 Non-Secure⇥	OK␍␊
16 NRF_PWM3 Non-Secure⇥	OK␍␊
17 NRF_WDT Non-Secure⇥	OK␍␊
18 NRF_IPC Non-Secure⇥	OK␍␊
19 NRF_VMC Non-Secure⇥	OK␍␊
20 NRF_FPU Non-Secure⇥	OK␍␊
21 NRF_EGU1 Non-Secure⇥	OK␍␊
22 NRF_EGU2 Non-Secure⇥	OK␍␊
23 NRF_DPPIC Non-Secure⇥	OK␍␊
24 NRF_REGULATORS Non-Secure⇥	OK␍␊
25 NRF_GPIOTE1 Non-Secure⇥	OK␍␊
␍␊
SPM: NS image at 0xc000␍␊
SPM: NS MSP at 0x2001bc88␍␊
SPM: NS reset vector at 0x1028d␍␊
SPM: prepare to jump to Non-Secure image.␍␊
E: Device id 00 00 00 does not match config c2 28 17␍␊
*** Booting Zephyr OS build v2.4.99-ncs1 ***␍␊
HTTP full modem update sample started␍␊
Failed to get flash device: MX25R64␍␊ 
 We have seen this on two dev kits (same hw version). Both boards have solder bridge 23 still connected so the CS pin wasn't disconnected.

Heidi · Accepted Answer

Hi RonanB96 , dsmith115 
 
 external_flash_pins_routing is disabled by default in the board config for the nRF52840 (see here ), so this needs to be set to "okay" in an overlay file and flashed to the board.

In short, create a dts overlay, for example in /zephyr/samples/hello_world , e.g. nrf9160dk_nrf52840.overlay: &external_flash_pins_routing { status = "okay"; };

Do west build -b nrf9160dk_nrf52840@1.0.0, flash the nRF52840 (remember to set SW10 to nRF52), and power-cycle the board.

Then try flashing the original sample again, and it should work.

full_modem_update: "Failed to get flash device: MX25R64"

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