add ci

.github/workflows/main.yml

@@ -0,0 +1,36 @@
+name: PlatformIO CI
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Cache pip
+      uses: actions/cache@v2
+      with:
+        path: ~/.cache/pip
+        key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+        restore-keys: |
+          ${{ runner.os }}-pip-
+    - name: Cache PlatformIO
+      uses: actions/cache@v2
+      with:
+        path: ~/.platformio
+        key: ${{ runner.os }}-${{ hashFiles('**/lockfiles') }}
+    - name: Set up Python
+      uses: actions/setup-python@v2
+    - name: Install PlatformIO
+      run: |
+        python -m pip install --upgrade pip
+        pip install --upgrade platformio
+    - name: Run PlatformIO
+      run: pio run -e esp32dev
+    - name: Upload artifacts
+      uses: actions/upload-artifact@v3
+      with:
+        name: image
+        path: .pio/build/esp32dev/firmware.bin

README.md

@@ -1,7 +1,7 @@
 # ESP32 Modbus RTU/TCP Gateway
 
-The goal is to create a generic firmware for an ESP32 to be used as a gateway for any modbus RTU device.
+A generic firmware for an ESP32 to be used as a gateway for any modbus RTU device.
 
 ## State
 
-Some things are already working, but it's far from finished. If you have an idea please open an issue - if you can improve anything just create a PR.
+It work's for me, but there's plenty of room for improvement. If you have an idea please open an issue - if you can improve anything just create a PR.