X-Git-Url: https://git.rohieb.name/hackover2013-badge-firmware.git/blobdiff_plain/9d18e10afb2439a6a9ba6978a799259746a837b7..5337261a68ea89b88624ca6fd7319cadd662e057:/core/timer32/timer32.c

diff --git a/core/timer32/timer32.c b/core/timer32/timer32.c
index b768905..d25638f 100644
--- a/core/timer32/timer32.c
+++ b/core/timer32/timer32.c
@@ -69,6 +69,7 @@
 
 volatile uint32_t timer32_0_counter = 0;
 volatile uint32_t timer32_1_counter = 0;
+void (*interruptHandler0)(void) = NULL;
 
 /**************************************************************************/
 /*! 
@@ -130,14 +131,20 @@ void timer32Delay(uint8_t timerNum, uint32_t delay)
 /**************************************************************************/
 void TIMER32_0_IRQHandler(void)
 {  
-  /* Clear the interrupt flag */
-  TMR_TMR32B0IR = TMR_TMR32B0IR_MR0;
+    /* Call the callback function if required */
+    if(NULL != interruptHandler0) 
+    {
+        (*interruptHandler0)();
+    }
 
-  /* If you wish to perform some action after each timer 'tick' (such as 
+    /* Clear the interrupt flag */
+    TMR_TMR32B0IR = TMR_TMR32B0IR_MR0;
+
+    /* If you wish to perform some action after each timer 'tick' (such as 
      incrementing a counter variable) you can do so here */
-  timer32_0_counter++;
+    timer32_0_counter++;
 
-  return;
+    return;
 }
 
 /**************************************************************************/
@@ -341,4 +348,79 @@ void timer32Init(uint8_t timerNum, uint32_t timerInterval)
   return;
 }
 
+/**************************************************************************/
+/*! 
+    @brief Sets the optional callback function for 32-bit timer 0
+
+    @section EXAMPLE
 
+    @code
+    #include "core/timer32/timer32.h"
+
+    static volatile int32_t timerCounter;
+
+    // Callback function for 32-bit timer 0
+    void ct32b0Callback(void)
+    {
+      timerCounter++;
+    }
+
+    int main(void)
+    {
+      // Configure cpu and mandatory peripherals
+      systemInit();
+
+      // Init timer 0 with 1ms delay
+      timer32Init(0, TIMER32_CCLK_1MS);
+
+      // Setup the interrupt callback
+      timer32SetIntHandler(ct32b0Callback);
+
+      // Enable the timer
+      timer32Enable(0);
+
+      while (1)
+      {
+      }
+    }
+    @endcode
+*/
+/**************************************************************************/
+void timer32SetIntHandler(void (*handler)(void)) 
+{
+    interruptHandler0 = handler;
+}
+
+/**************************************************************************/
+/*! 
+    @brief Returns the value of the auto-incrementing timer counter(s)
+*/
+/**************************************************************************/
+uint32_t timer32GetCount(uint8_t timerNum) 
+{
+    if (0 == timerNum) 
+    {
+        return timer32_0_counter;
+    } 
+    else 
+    {
+        return timer32_1_counter;
+    }    
+}
+
+/**************************************************************************/
+/*! 
+    @brief Resets the auto-incrementing timer counter(s)
+*/
+/**************************************************************************/
+void timer32ResetCounter(uint8_t timerNum)
+{
+    if (0 == timerNum)
+    {
+        timer32_0_counter = 0;
+    } 
+    else if (1 == timerNum) 
+    {
+        timer32_1_counter = 0;
+    }
+}