Add first flashing doc

README.md

@@ -20,13 +20,30 @@ config
 │   ├── yeelight_bs2/
 │   .   ├── README.md
 .   .   ├── yeelight_bs2_light_output.h
-.       .
-        .
+.   .   .
 ```
 
 Then add the required configuration to your device's yaml configuration file.
 For an example file, take a look at `doc/example.yaml` in this repository.
 
+On a Rapsbery Pi with HomeAssistant and ESPHome as a plugin, the directory should be:
+
+
+/config/esphome/custom_components/yeelight_bs2/
+
+```
+config
+├── epshome
+│   ├── yourdevice.yaml
+│   ├── custom_components/
+|   .   ├── yeelight_bs2/
+│   .   .    ├── README.md
+.   .   .    ├── yeelight_bs2_light_output.h
+.   .   .    .
+```
+
+See [doc/FLASHING.md](doc/FLASHING.md) for hints for opening and flashing the light.
+
 ## Issue: the device keeps losing its connection to Home Assistant
 
 This is not a problem with the device or the custom firmware, but a problem
@@ -39,7 +56,7 @@ If you want to try out this change, then create a `libs` folder in the
 folder where your device's yaml configuration file is stored, and clone the
 following repository into that folder:
 
-  https://github.com/mmakaay/AsyncTCP 
+  https://github.com/mmakaay/AsyncTCP
 
 For example on the command line:
 

doc/FLASHING.md

@@ -0,0 +1,90 @@
+
+# Flahsing Bedlight
+
+## Tools needed
+
+* imbus or torx  screw driver (3mm?)
+* Soldering Iron
+* pehabs some Sticky tape
+* a serial to USB adapter with 3,3 Volt output
+* Some wires
+
+## Warning
+
+We have writen this instructions with care, but we will gave absoultly no warnenty. Perhabs you will destroy your device and your computer.
+
+
+## Opening the yeelight
+
+Remove the rubber on the botton of the bottom of the light.
+
+Unbolt the 4 Screws which was hidden by the rubber.
+  ![Photo of the screws](Yeelight_screws.jpg "You will need an imbus or torx screw driver to remove the screws.")
+
+Remove the plastic.
+
+## Solder the wires
+
+Solder the wires to the points of this picture.
+  ![Soldering points of a yeelight](https://community-assets.home-assistant.io/optimized/3X/1/3/1340a2367e5894281ac6d042f328d9db80ae7da4_2_790x750.jpeg)
+
+  You can use stick tape to fix the cables before soldering.
+
+## Connect to your flashing device
+Make sure that your that your flashing device is given 3.3 Volt between GND and VCC. If not you can use the regular power adapter instead.
+
+  | Soldering point| Serial USB Adapter name  |
+  | -------------- |:------------------------:|
+  | Gnd            |  Gnd                     |
+  | TX             |  RX                      |
+  | RX             |  TX                      |
+  | GPIO0          |  Gnd                     |
+  | 3.3 V          |  VCC or regular power adapter|
+
+Connect all wires execpt VCC or Power Adapter, then plugin the power in the last step.
+
+## Download and install esptool
+
+See: https://github.com/espressif/esptool/blob/master/README.md#installation--dependencies
+
+## Make a backup of the current firmware
+
+```
+python esptool.py -p /dev/ttyUSB0 read_flash 0x 0x400000 original-yeelight-firmware.bin
+```
+
+/dev/ttyUSB0 is the port of the usb adaper on linux you will see it with `dmesg`. On Windows this is often `COM1`, `COM2` or `COM3`
+
+Caution: You will find WLAN SSID and Password of the lasted used Wifi in this file
+
+**After each step with esptool, you have to unplug you power line and connect it again.**
+
+## Flash new firmware
+
+Setup a ESPHome Project, see [README.md](../README.md)
+
+Now you can flash the device directly with esphome or by esptool.
+
+If you want to flash with esptool, compile with esphome and download it.
+
+```
+python.exe .\esptool.py --chip esp32 --port COM3 --baud 115200 write_flash 0x1000 <yourfile.bin>
+```
+
+One your firmware is flashed, you can flash more OTA via ESPHOME.
+## Troubleshooting flash
+
+If you have **A fatal error occurred: MD5 of file does not match data in flash!**
+you can try to use the regular power adapter instead of the vcc line.
+
+
+After this error, user @tabacha  successfully flashed esp with tasmota bootloader with the regular power adapter and the following command:
+
+```
+python esptool.py --chip esp32  -p /dev/ttyUSB0 --baud 115200 --before default_reset --after hard_reset write_flash -z --flash_mode dout --flash_freq 40m --flash_size detect 0x1000 bootloader_dout_40m.bin 0x8000 partitions.bin 0xe000 boot_app0.bin 0x10000 ~/Downloads/schlafzimmerbedlight.bin
+```
+
+You will find the missing tasmota boot files here: https://github.com/arendst/Tasmota/tree/firmware/firmware/tasmota32/ESP32_needed_files
+
+User @tabacha was not able to use tasmota with the beedlight.
+