ESP Web Tools

Allow flashing ESPHome or other ESP-based firmwares via the browser. Will automatically detect the board type and select a supported firmware.

<esp-web-install-button
  manifest="firmware_esphome/manifest.json"
></esp-web-install-button>

Manifest definition:

{
  "name": "ESPHome",
  "version": "2021.10.3",
  "home_assistant_domain": "esphome",
  "builds": [
    {
      "chipFamily": "ESP32",
      "parts": [
        { "path": "bootloader_dout_40m.bin", "offset": 4096 },
        { "path": "partitions.bin", "offset": 32768 },
        { "path": "boot_app0.bin", "offset": 57344 },
        { "path": "esp32.bin", "offset": 65536 }
      ]
    },
    {
      "chipFamily": "ESP32-C3",
      "parts": [
        { "path": "bootloader_dout_40m.bin", "offset": 0 },
        { "path": "partitions.bin", "offset": 32768 },
        { "path": "boot_app0.bin", "offset": 57344 },
        { "path": "esp32-c3.bin", "offset": 65536 }
      ]
    },
    {
      "chipFamily": "ESP32-S2",
      "parts": [
        { "path": "bootloader_dout_40m.bin", "offset": 4096 },
        { "path": "partitions.bin", "offset": 32768 },
        { "path": "boot_app0.bin", "offset": 57344 },
        { "path": "esp32-s2.bin", "offset": 65536 }
      ]
    },
    {
      "chipFamily": "ESP32-S3",
      "parts": [
        { "path": "bootloader_dout_40m.bin", "offset": 4096 },
        { "path": "partitions.bin", "offset": 32768 },
        { "path": "boot_app0.bin", "offset": 57344 },
        { "path": "esp32-s3.bin", "offset": 65536 }
      ]
    },
    {
      "chipFamily": "ESP8266",
      "parts": [
        { "path": "esp8266.bin", "offset": 0 }
      ]
    }
  ]
}

Styling

Attributes

The following attributes are automatically added to <esp-web-install-button> and can be used for styling:

Attribute	Description
`install-supported`	Added if installing firmware is supported
`install-unsupported`	Added if installing firmware is not supported

CSS custom properties (variables)

The following variables can be used to change the colors of the default UI elements:

--esp-tools-button-color
--esp-tools-button-text-color

Slots

The following slots are available:

Slot name	Description
`activate`	Button to start the flash progress
`unsupported`	Message to show when the browser is not supported
`not-allowed`	Message to show when not a secure context

Development

Run script/develop. This starts a server. Open it on http://localhost:5001.

Staars/esp-web-tools

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