fix

.travis.yml

@@ -1,3 +1,9 @@
+# safelist
+branches:
+  only:
+  - master
+  - devel
+
 language: c
 dist: focal
 os: linux

RX_FSK/src/pmu.cpp

@@ -1,7 +1,7 @@
 #include <stdio.h>
 #include <Wire.h>
 #include "pmu.h"
-#include "src/sonde.h"
+#include "Sonde.h"
 
 // 0: cleared; 1: set; 2: do not check, also query state of axp via i2c on each loop
 uint8_t pmu_irq = 0;