FIX: ppm interrupt problem

Src/stm32f1xx_it.c

@@ -34,6 +34,7 @@
 #include "stm32f1xx_hal.h"
 #include "stm32f1xx.h"
 #include "stm32f1xx_it.h"
+#include "config.h"
 
 extern DMA_HandleTypeDef hdma_i2c2_rx;
 extern DMA_HandleTypeDef hdma_i2c2_tx;