idftool

The ultimate CLI tool for interacting with Espressif devices. Built on esptool and aware of the ESP-IDF partition table: flash apps, switch OTA slots, and read or write partitions by name, without working out offsets by hand.

Documentation

Highlights

Device selection on connection

No more guessing which device is on which port. Run any command without -p and idftool lists the connected devices and asks which to use:

$ idftool ota build/app.bin
? Select device (↑↓ move · ↵ select · p probe · r refresh · k kill · q quit)
 » /dev/cu.usbmodem11401         ESP USB-Serial/JTAG   7c:2c:67:92:79:c0
   /dev/cu.usbmodem2101          ESP USB-Serial/JTAG   b8:f8:62:49:ea:14
   /dev/cu.PL2303G-USBtoUART10   PL2303GT
   ✎ Enter a port manually…
   ↻ Refresh
   ✕ Quit

Pick one, and it tells you how to skip the question next time:

Device: /dev/cu.usbmodem11401 — ESP USB-Serial/JTAG · 7c:2c:67:92:79:c0
Re-run with: idftool -p /dev/cu.usbmodem11401 ota build/app.bin
         or: idftool -m 7c:2c:67:92:79:c0 ota build/app.bin
...
Writing 'my-app v1.2.0' to partition 'ota_1'...
Setting boot partition to 'ota_1'...

The -m form finds the board by its MAC address, wherever it's plugged in.

Firmware flashing

Flash to the default (factory) or next available (OTA) app partition, with no offsets to memorise. An OTA flash switches to the new slot the way a real update would, and only the sectors that changed are rewritten.

idftool factory build/app.bin
idftool ota build/app.bin
idftool set-boot ota_1

Partition-name addressing

Read, write, erase, or hex-dump a partition by name, or a slice of one:

idftool read nvs nvs.bin
idftool write storage build/spiffs.bin
idftool view 'log[-0x1000:]'

Safety checks

Everything is checked before flash is touched:

• Data has to fit the partition it's written to.
• Apps have to be valid images, built for the connected chip.
• A file name given where a partition name belongs is caught before connecting, with the corrected command.

Bundles and images

Pack several partitions (and optionally the partition table) into one ZIP and flash them in one command, or dump and restore a whole flash image.

idftool dump-bundle backup.zip
idftool write-bundle release.zip

Filesystems and NVS

Build FAT, littlefs, or SPIFFS images from a directory and flash them, or pull them off the device. The filesystem type comes from the partition table, so you don't need to say which. Generate NVS from CSV, read a key into a shell, or change one on a live device.

idftool write-fs storage assets/
serial=$(idftool get-nvs nvs storage:serial)
idftool set-nvs nvs storage:serial=SN-0001

Contributing

See CONTRIBUTING.md.