does CI work now?

.github/workflows/pio_build.yml

@@ -46,6 +46,7 @@ jobs:
     - name: Run PlatformIO
       env: 
         PLATFORMIO_BUILD_FLAGS: ${{ matrix.no_gfx }} ${{ matrix.no_fast_functions }} ${{ matrix.no_cie1931 }} ${{ matrix.virtual_panel }}
-#        PLATFORMIO_CI_SRC: ${{ matrix.example }}
+        PLATFORMIO_CI_SRC: ${{ matrix.example }}
 #      run: pio ci -e esp32 -c ${{ matrix.example }}/platformio.ini
-      run: pio run -d ${{ matrix.example }} -e esp32idf -c ${{ matrix.example }}/platformio.ini
+      run: pio ci -e esp32idf -c ${{ matrix.example }}/platformio.ini
+#      run: pio run -d ${{ matrix.example }} -e esp32idf -c ${{ matrix.example }}/platformio.ini

examples/PIO_TestPatterns/src/main.cpp

@@ -1,14 +1,13 @@
 // How to use this library with a FM6126 panel, thanks goes to:
 // https://github.com/hzeller/rpi-rgb-led-matrix/issues/746
 
-
-// IDF
+//#ifdef IDF_BUILD
 #include <stdio.h>
 #include <freertos/FreeRTOS.h>
 #include <freertos/task.h>
 #include <driver/gpio.h>
 #include "sdkconfig.h"
-// IDF
+//#endif
 
 #include <Arduino.h>
 #include "xtensa/core-macros.h"