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embedded-trainings-2020/embedded-workshop-book/src/troubleshoot-cargo-flash.md
Lotte Steenbrink 4a811d27e1 rm nrf-recover
2021-01-20 15:43:38 +01:00

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cargo-flash is not working

Debug power request failed

$ cargo flash --chip nRF52840_xxAA --bin hello
 ERROR probe_rs::architecture::arm::communication_interface > Debug power request failed
Error processing command: An error specific to the selected architecture occured

This is a spurious error that occurs only once on a new development kit. Running the command again should make the error go away. If you still get the error run RUST_LOG=probe_rs=debug cargo flash --chip nRF52840_xxAA --bin hello once.

'erase_sector' failed with code 1

$ cargo flash --chip nRF52840_xxAA --bin hello
(..)
Error failed to flash app: The execution of 'erase_sector' failed with code 1

Ensure that you've installed version 0.10 or higher of cargo-flash and cargo-embed

$ cargo flash --version
0.10.2

$ cargo embed --version
0.10.2

Linux permissions

$ cargo flash --chip nRF52840_xxAA --bin hello
Error: An error specific to a probe type occured: USB error while opening USB device: Access denied (insufficient permissions)

Caused by:
    USB error while opening USB device: Access denied (insufficient permissions)

udev rules need to be changed to allow non-root access. Instructions can be found in the Linux only: USB section of the Installation Instructions.

Wrong Windows Driver

$ cargo flash --chip nRF52840_xxAA --bin hello
Error: An error specific to a probe type occured: USB error while opening USB device: Entity not found

Caused by:
    USB error while opening USB device: Entity not found

You need to bind the BULK interface of the J-Link USB device to the WinUSB driver using the Zadig tool. Instructions can be found in the Windows only: Zadig JLink driver section of the Installation Instructions.