Diff: Device/WakeUp_LPC11u24.cpp

Revision:

18:e71f388710b7

Parent:

7:bb411115f814

Child:

19:c1fc9bb48d2b

diff -r 49d9e3a3e904 -r e71f388710b7 Device/WakeUp_LPC11u24.cpp
--- a/Device/WakeUp_LPC11u24.cpp	Wed Apr 22 20:36:13 2015 +0000
+++ b/Device/WakeUp_LPC11u24.cpp	Thu Jun 25 08:18:26 2015 +0000
@@ -11,6 +11,7 @@
 
 FunctionPointer WakeUp::callback;
 float WakeUp::cycles_per_ms = 5.0;
+uint32_t WakeUp::timeoutSet = 0;
 
 void WakeUp::set_ms(uint32_t ms)
 {
@@ -19,25 +20,26 @@
         LPC_SYSCON->PDRUNCFG &= ~(1<<6);
         LPC_SYSCON->PDSLEEPCFG &= ~(1<<6);
         LPC_SYSCON->STARTERP1 |= 1<<12;
-        
+
         //Set oscillator for 20kHz = 5kHz after divide by 4 in WDT
         LPC_SYSCON->WDTOSCCTRL = 14 | (1<<5);
-        
+
         LPC_WWDT->MOD = 1;      //Enable WDT
-        LPC_WWDT->TC = (uint32_t)((float)ms * cycles_per_ms);
+        timeoutSet = (uint32_t)((float)ms * cycles_per_ms);
+        LPC_WWDT->TC = timeoutSet;
         LPC_WWDT->CLKSEL = 1;   //WDTOSC
         LPC_WWDT->WARNINT = 0;
-        
+
         NVIC_SetVector(WDT_IRQn, (uint32_t)WakeUp::irq_handler);
-        
+
         //Feeeeeed me
         LPC_WWDT->FEED = 0xAA;
         LPC_WWDT->FEED = 0x55;
-        
+
         NVIC_EnableIRQ(WDT_IRQn);
     } else
         NVIC_DisableIRQ(WDT_IRQn);
-    
+
 }
 
 void WakeUp::irq_handler(void)
@@ -56,8 +58,13 @@
     uint32_t count2 = LPC_WWDT->TV;
     set_ms(0);
     count1 = count1 - count2;
-    
+
     cycles_per_ms = count1 / 100.0;
 }
 
+uint32_t WakeUp::timeRemaining(void)
+{
+    return (uint32_t)((LPC_WWDT->TV - timeoutSet) / cycles_per_ms);
+}
+
 #endif