This fork of ESP Web Tools for LightningPiggy supports find-and-replace of configuration values in the binary firmware.
The binary firmware files (such as Main.ino.bin) contain hard-coded configuration strings that originate from config.h in the source code, which are then replaced by the values the user provides on the webpage.
For example, "REPLACETHISBYLNBITSHOST_REPLACETHISBYLNBITSHOST_REPLACETHISBYLNBITSHOST" will be replaced by the LNBits hostname that's provided by the user in the webinstaller.
The Javascript code (see src/flash.ts, compiled to dist/flash.js and then bundled into dist/webumd/install-button.js) will modify the binary firmware files on the fly, fix the XOR checksum, and then upload the firmware to the ESP32 device.
Update src/flash.ts and then run:
./script/develop
Allow flashing ESPHome or other ESP-based firmwares via the browser. Will automatically detect the board type and select a supported firmware. See website for full documentation.
<esp-web-install-button
manifest="firmware_esphome/manifest.json"
></esp-web-install-button>Example manifest:
{
"name": "ESPHome",
"version": "2021.10.3",
"home_assistant_domain": "esphome",
"funding_url": "https://esphome.io/guides/supporters.html",
"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 }
]
}
]
}Run script/develop. This starts a server. Open it on http://localhost:5001.