cppcheck add

.travis.yml

@@ -9,4 +9,5 @@ install:
     - pip install -U platformio
     - platformio update
 script:
+    - platformio check --fail-on-defect low --fail-on-defect medium --fail-on-defect high
     - platformio run

platformio.ini

@@ -4,6 +4,10 @@ framework = arduino
 board = ttgo-t-beam
 lib_ldf_mode = deep+
 monitor_speed = 115200
+check_tool = cppcheck, clangtidy
+check_flags =
+    cppcheck: --suppress=*:*.pio\*
+
 
 #ESP8266 and ESP32 OLED driver for SSD1306 displays
 [env:ttgo-t-beam-v1]