[NUCLEO_F030R8] Remove timer update interrupt in sleep

Author: bcostm

libraries/mbed/targets/hal/TARGET_STM/TARGET_NUCLEO_F030R8/sleep.c

@@ -32,15 +32,23 @@
 
 void sleep(void)
 {
+    // Disable us_ticker update interrupt
+    TIM_ITConfig(TIM1, TIM_IT_Update, DISABLE);
+  
     SCB->SCR = 0; // Normal sleep mode for ARM core
     __WFI();
+  
+    // Re-ensable us_ticker update interrupt
+    TIM_ITConfig(TIM1, TIM_IT_Update, ENABLE);  
 }
 
+// MCU STOP mode
+// Wake-up with external interrupt
 void deepsleep(void)
-{    
+{
     // Enable PWR clock
     RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
 
     // Request to enter STOP mode with regulator in low power mode
-    PWR_EnterSTOPMode(PWR_Regulator_LowPower, PWR_STOPEntry_WFI);  
+    PWR_EnterSTOPMode(PWR_Regulator_LowPower, PWR_STOPEntry_WFI);
 }