# Esp8266-Laser
Wifi Host for the Arduino-Laser-Spirograph

HTTP endpoints:  
  /spirograph   GET returns laser and motor values (0 at startup)  
                POST sets new value(s)  
                    laser=1-128 (1:permanent, 2-127 pulse, 128 off)  
                    motor1=1-128  
                    motor2=1-128  
                    motor3=1-128  
                    
                
  /wificonfig ->    GET returns wifi settings  
                    POST sets new wifi setting{s}  
                        apMode=0: will try to connect to SSID first, 1: will directly start the AP  
                        SSID=ssid  
                        password=password  
                        save=true will save config to spiffs, false will only change RAM variable (useful for onetime ap joins)  
                        apply=true will reset wifi and try to connect with new param (buggy atm)  
  /saveconf ->  POST write wificonfig to file (similar to wificonfig->save=true) 
  /resetwifi -> POST reconnect wifi (similar to wificonfig->apply=true) 
  /heap ->  GET returns free heap of the ESP8266  
  /files -> GET returns list of files  

# Install
- install arduino ide (1.8.5) or PlatformIO (see Development section for further instructions)  

- follow this instruction
  https://github.com/esp8266/Arduino#installing-with-boards-manager

- clone/exctract repo to sketchbook

- install this libaries
  https://github.com/plerup/espsoftwareserial
  https://github.com/bblanchon/ArduinoJson/

- follow this instruction:
	set wifi parameters in data/wifi.json before upload  
	http://esp8266.github.io/Arduino/versions/2.0.0/doc/filesystem.html#uploading-files-to-file-system

You may also need to:
- get and install driver for nodemcu
  https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers

# Development  
PlatformIO
----------
The project is intended to run on PlatformIO and the build environment is configured for NodeMCU 1.0 (ESP-12E Module).  
More informations: http://docs.platformio.org/en/latest/platforms/espressif8266.html    
  
Following libraries need to be installed via PIO Home / Libraries:  
- SoftwareSerial
- ArduinoJson

Use following commands to build and upload the firmware and filesystem:  
```
# clean the build directory  
pio run -t clean  

# run default build job  / build the formware
pio run  

# upload the firmware  
pio run -e nodemcu -t upload  

# build the filesystem  
pio run -t buildfs  

# upload the filesystem  
pio run -t uploadfs  

```
  
PlatformIO tasks can also be triggered with following npm run commands (pio / platformio executable needs to be in $PATH):  
```
build:fs
upload:fs
build:firmware
upload:firmware
```

Frontend
--------
Frontend development requires NodeJS / npm.  
The development server watches all files in the frontend directory and automatically builds and copies the frontend code to the data folder.  

```
# run development server on port 8080
npm run dev  
  
# build distribution source to data folder  
npm run build  
```