A library and command-line tool for flashing Espressif devices.
Supports the ESP32, ESP32-C2/C3/C6, ESP32-H2, ESP32-S2/S3, and ESP8266.
If you are installing espflash from source (ie. using cargo install) then you must have rustc>=1.65.0 installed on your system.
If you are running macOS or Linux then [libuv] must also be installed; this is available via most popular package managers. If you are running Windows you can ignore this step.
```bash
brew install libuv
apt-get install libuv-dev
dnf install systemd-devel ```
To install:
bash
cargo install espflash
Alternatively, you can use [cargo-binstall] to download pre-compiled artifacts from the [releases] and use them instead:
bash
cargo binstall espflash
If you would like to flash from a Raspberry Pi using the built-in UART peripheral, you can enable the raspberry feature (note that this is not available if using [cargo-binstall]):
bash
cargo install espflash --features=raspberry
```text A command-line tool for flashing Espressif devices
Usage: espflash
Commands: board-info Establish a connection with a target device completions Generate completions for the given shell flash Flash an application to a target device monitor Open the serial monitor without flashing partition-table Operations for partitions tables save-image Save the image to disk instead of flashing to device write-bin Writes a binary file to a specific address in the chip's flash help Print this message or the help of the given subcommand(s)
Options: -h, --help Print help -V, --version Print version ```
In Linux, when using any of the commands that requires using a serial port, the current user may not have access to serial ports and a "Permission Denied" or "Port doesn’t exist" errors may appear.
On most Linux distributions, the solution is to add the user to the dialout group (check e.g. ls -l /dev/ttyUSB0 to find the group) with a command like sudo usermod -a -G dialout $USER. You can call su - $USER to enable read and write permissions for the serial port without having to log out and back in again.
Check your Linux distribution’s documentation for more information.
It is not currently possible to use cargo-espflash from within WSL1. There are no plans to add support for WSL1 at this time.
It is also not possible to flash chips using the built-in USB_SERIAL_JTAG peripheral when using WSL2, because resetting also resets USB_SERIAL_JTAG peripheral, which then disconnects the chip from WSL2. Chips can be flashed via UART using WSL2, however.
You can also use espflash as a Cargo runner by adding the following to your project's .cargo/config.toml file, for example:
toml
[target.'cfg(any(target_arch = "riscv32", target_arch = "xtensa"))']
runner = "espflash flash --baud=921600 --monitor /dev/ttyUSB0"
With this configuration you can flash and monitor you application using cargo run.
It's possible to specify a serial port and/or USB VID/PID values by setting them in a configuration file. The location of this file differs based on your operating system:
| Operating System | Configuration Path |
| :--------------- | :---------------------------------------------------------------- |
| Linux | $HOME/.config/espflash/espflash.toml |
| macOS | $HOME/Library/Application Support/rs.esp.espflash/espflash.toml |
| Windows | %APPDATA%\esp\espflash\espflash.toml |
You can either configure the serial port name like so:
[connection]
serial = "/dev/ttyUSB0"
Or specify one or more USB vid/pid couple:
[[usb_device]]
vid = "303a"
pid = "1001"
Licensed under either of:
at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.