cargo runner error: unexpected argument

[phemmer]

Using the template esp-rs/esp-template to create a project defaults to using espflash. However the "Rust on ESP book" says that cargo-espflash should be preferred. After installing cargo-espflash and trying to switch to it, it generates an error:

# cargo run
    Finished dev [unoptimized + debuginfo] target(s) in 0.12s
     Running `cargo espflash flash -p '/dev/serial/by-id/usb-Espressif_USB_JTAG_serial_debug_unit_54:32:04:07:2E:94-if00' --monitor target/riscv32imac-unknown-none-elf/debug/pumps`
error: unexpected argument 'target/riscv32imac-unknown-none-elf/debug/pumps' found

Usage: cargo espflash flash [OPTIONS]

For more information, try '--help'.

From the following runner config in config.toml:

[target.riscv32imac-unknown-none-elf]
runner = "cargo espflash flash -p /dev/serial/by-id/usb-Espressif_USB_JTAG_serial_debug_unit_54:32:04:07:2E:94-if00 --monitor"

Looking at the --help of the two commands, it seems there is a difference in that espflash takes a path to an image as a positional argument, while cargo-espflash does not. It also does not appear that any of the flags (e.g. --bin) accept the path that cargo gives it.

Can we get some documentation on how to properly integrate cargo-espflash into the cargo config as a runner?

[SergioGasquez]

Hi! cargo-espflash cant be used as a Cargo custom runner, if you do cargo espflash flash --monitor it will build, flash and monitor. cargo espflash basically adds espflash the building features. Hence, if you want to use a custom runner, use espflash.

However the "Rust on ESP book" says that cargo-espflash should be preferred.

Can you point me to where this is in the book?

[phemmer]

https://esp-rs.github.io/book/troubleshooting/espflash.html

You should also prefer using cargo-espflash over espflash.

[SergioGasquez]

That statement does not apply to you:

If you are building an esp-idf-sys based project

This is not your case, you are not building an esp-idf-sys based project.

[SergioGasquez]

I will close the issue, should you have more questions feel free to post them here or in the matrix room