добавлена возможность пропускать код стандартного обработчика прерываний при использовании пользовательского обработчика

cores/arduino/trap_handler.c

@@ -18,12 +18,12 @@ void __attribute__((weak)) IRremote_interrupt_handler(void)
     // dummy function for case when IRremote library is not in use
 }
 
-void __attribute__((weak)) ISR(void)
-{
+bool __attribute__((section(".ram_text"), weak)) ISR(void)
+{ 
     /* 
     A dummy function for the case when additional interrupts are not used in the project.
     In the project, you need to create a function of the form:
-    extern "C" void ISR()
+    extern "C" __attribute__((section(".ram_text"))) bool ISR(void)
     {
         if (EPIC_CHECK_TIMER16_1())
         {
@@ -35,20 +35,31 @@ void __attribute__((weak)) ISR(void)
             // reset timer interrupt flags
             TIM16_CLEAR_INT_MASK(htimer16_1_, 0xFFFFFFFF);
         }
+        return false;
     }
+
+    If you don't need to call standard trap_handler() code, you can return true from this function
+    and trap_handler() code will be missed. But you must carefully clear interrupt flags by yourself 
+    in your custom ISR() function.
+
     libraries required to use this example:
     #include "mik32_hal_timer16.h"
-    #include "mik32_hal_irq.h"
     #include "wiring_LL.h" 
     */
+    return false;
 }
 
 // ---------------------------------------------- //
 void __attribute__((noinline, section(".ram_text"), optimize("O3"))) trap_handler (void)  
 {
     // custom interrupt
-    ISR();
-
+    if(ISR())
+    {
+        // reset all interrupts and miss trap_handler() code
+        EPIC_CLEAR_ALL();
+        return;
+    }
+        
     // gpio interrupt
     if (EPIC_CHECK_GPIO_IRQ())
         gpio_interrupt_handler();
@@ -77,6 +88,7 @@ void __attribute__((noinline, section(".ram_text"), optimize("O3"))) trap_handle
     if (EPIC_CHECK_I2C_0())
         wire_interrupt_handler(0);
 
+    // i2c1 interrupt
     if (EPIC_CHECK_I2C_1())
         wire_interrupt_handler(1);