Update esp32-hal-timer.c in attempt to fix Timers

For fixing Hardware Timers:
Timer functions do not work at all in PlatformIO espressif#5337

espressif#5337
espressif@8f46bad?diff=split

Author: gb-123-git

cores/esp32/esp32-hal-timer.c

@@ -36,7 +36,7 @@
 #define HWTIMER_LOCK()      portENTER_CRITICAL(timer->lock)
 #define HWTIMER_UNLOCK()    portEXIT_CRITICAL(timer->lock)
 
-typedef struct {
+typedef volatile struct {
     union {
         struct {
             uint32_t reserved0:   10;
@@ -240,6 +240,12 @@ void timerEnd(hw_timer_t *timer){
 }
 
 void timerAttachInterrupt(hw_timer_t *timer, void (*fn)(void), bool edge){
+#if CONFIG_IDF_TARGET_ESP32
+    if(edge){
+        log_w("EDGE timer interrupt does not work properly on ESP32! Setting to LEVEL...");
+        edge = false;
+    }
+#endif    
     static bool initialized = false;
     static intr_handle_t intr_handle = NULL;
     if(intr_handle){