Hi
I am using the Zephyr code base after trying to update the ncs to 2.1.2 from 1.9.2
I notice that the function "flash_area_open" is returning a -2 error as it couldn't find this area ID
I am trying to open an area in the external flash.... no problem in opening any area in the internal flash
Any tips of how i might overcome this problem ?
Thanks a lot
Hi,
The function flash_area_open() will return -ENOENT if the first parameter - ID - is unknown. I do not know enough about the issue to say more about what is happening in your case though. Perhaps you can elaborate a bit on your configuration and potential steps to reproduce?
PS: Based on what you write it does not seem like you are seeing the same issue, but there is currently problems with external flash in the nRF Connect SDK 2.1.x releases that you may want to be aware of. See this post for more details.
chosen {
zephyr,sram = &sram0;
zephyr,flash = &flash0;
zephyr,code-partition = &slot0_partition;
nordic,pm-ext-flash = &augu_flash_w25n;
};
.........
.........
&spi2 {
status = "okay";
sck-pin = <19>; // gpio 0 pin 19
mosi-pin = <32>; // gpio 1 pin 0
miso-pin = <22>; // gpio 0 pin 22
compatible = "nordic,nrf-spim";
cs-gpios = <&gpio0 17 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
augu_flash_w25n: augu_flash_w25n@0 {
compatible = "wb,augu_flash_w25n";
reg = <0>;
label = "AUGU_FLASH_W25N";
power_resources = <&flash_on>;
spi-max-frequency = <8000000>;
size = <0x40000000>;
page_size = <2048>;
block_size = <131072>;
wp_gpios = <&gpio0 23 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
hold_gpios = <&gpio0 21 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
};
};
Hi Thank you for the quick replay ,
Attached is my pm static file
also attached relevant parts in the DTS
mcuboot: address: 0x0 size: 0xc000 mcuboot_primary: address: 0xc000 orig_span: &id001 - mcuboot_pad - app sharers: 0x1 size: 0x76000 span: *id001 mcuboot_secondary: address: 0x82000 size: 0x76000 internal_flash_storage: address: 0xF8000 size: 0x8000 external_flash: address: 0x0 end_address: 0x40000000 device: augu_flash_w25n region: external_flash size: 0x40000000 littlefs_storage: address: 0x0 region: external_flash size: 0x75c0000 scratch_pad: address: 0x75c0000 region: external_flash size: 0x3c0000 reserved: address: 0x7980000 region: external_flash size: 0x100000 replace_blocks: address: 0x7A80000 region: external_flash size: 0x560000 params: address: 0x7FE0000 region: external_flash size: 0x20000
Hi,
I am sorry for the late reply. You can buypass this by setting CONFIG_PM_OVERRIDE_EXTERNAL_DRIVER_CHECK=y.
Thanks for the help
Although now after adding the suggested CONFIG i am getting an error while compiling
/opt/gcc-arm-none-eabi-10.3-2021.10/bin/../lib/gcc/arm-none-eabi/10.3.1/../../../../arm-none-eabi/bin/ld.bfd: zephyr/libzephyr.a(flash_map_partition_manager.c.obj):(.rodata.default_flash_map+0xc): undefined reference to `__device_dts_ord_92'
Any idea why is that ?
Thanks a lot
Hi,
I am not able to make sense of this error, unfortunately. Have you had any progress on your side? Can you share a bit more context and/or perhaps your project?
PS: I am sorry for the delay. I will most likely not be able to get back to you tomorrow for any follow-up, but early next week.
No problem
Is it possible to make this card private
So I may share the project with you
Thanks a lot
Found this link
which is similar to my issue
Please see the bellowCONFIG_PM_OVERRIDE_EXTERNAL_DRIVER_CHECK has been used to override the driver check for the external flash driver, but no driver is actually compiled for the region. Disabling the option removes partitions without device drivers from the flash map
How may I add the a driver to the region ?
Thanks
Found this link
which is similar to my issue
Please see the bellowCONFIG_PM_OVERRIDE_EXTERNAL_DRIVER_CHECK has been used to override the driver check for the external flash driver, but no driver is actually compiled for the region. Disabling the option removes partitions without device drivers from the flash map
How may I add the a driver to the region ?
Thanks
To add the driver add a config similar to this (from bootloader/mcuboot/boot/zephyr/boards/nrf52840dk_qspi_nor.conf):
CONFIG_NORDIC_QSPI_NOR=y CONFIG_NORDIC_QSPI_NOR_FLASH_LAYOUT_PAGE_SIZE=4096 CONFIG_NORDIC_QSPI_NOR_STACK_WRITE_BUFFER_SIZE=16