marlin cannot do any pin write in the global variable constructors, b…

…ecause global var init runs before the FastIO setup function call!
MarlinFirmware · Sep 30, 2020 · 25443e4 · 25443e4
1 parent 88d7f4d
commit 25443e4
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Showing 2 changed files with 5 additions and 2 deletions.
diff --git a/Marlin/src/MarlinCore.cpp b/Marlin/src/MarlinCore.cpp
@@ -1048,6 +1048,9 @@ void setup() {
   SERIAL_ECHO_MSG("Compiled: " __DATE__);
   SERIAL_ECHO_MSG(STR_FREE_MEMORY, freeMemory(), STR_PLANNER_BUFFER_BYTES, (int)sizeof(block_t) * (BLOCK_BUFFER_SIZE));
 
+  // Init buzzer pins
+  TERN_(USE_BEEPER, buzzer.init());
+
   // Set up LEDs early
   #if HAS_COLOR_LEDS
     SETUP_RUN(leds.setup());

diff --git a/Marlin/src/libs/buzzer.h b/Marlin/src/libs/buzzer.h
@@ -84,9 +84,9 @@
 
     public:
       /**
-       * @brief Class constructor
+       * @brief Init Buzzer
        */
-      Buzzer() {
+      static inline void init() {
         SET_OUTPUT(BEEPER_PIN);
         reset();
       }