Complete STM32L low power demo.

FreeRTOS/Demo/CORTEX_STM32L152_Discovery_IAR/STM32L_low_power_tick_management.c

@@ -76,7 +76,10 @@
 /*
  * When configCREATE_LOW_POWER_DEMO is set to 1 then the tick interrupt
  * is generated by the TIM2 peripheral.  The TIM2 configuration and handling
- * functions are defined in this file.
+ * functions are defined in this file.  Note the RTC is not used as there does
+ * not appear to be a way to read back the RTC count value, and therefore the
+ * only way of knowing exactly how long a sleep lasted is to use the very low
+ * resolution calendar time.
  *
  * When configCREATE_LOW_POWER_DEMO is set to 0 the tick interrupt is
  * generated by the standard FreeRTOS Cortex-M port layer, which uses the

FreeRTOS/Demo/CORTEX_STM32L152_Discovery_IAR/include/FreeRTOSConfig.h

@@ -89,7 +89,7 @@ assembler. */
 
 /* Set configCREATE_LOW_POWER_DEMO to one to run the simple blinky low power
 demo, or 0 to run the more comprehensive test and demo application. */
-#define configCREATE_LOW_POWER_DEMO			0
+#define configCREATE_LOW_POWER_DEMO			1
 
 /* A few settings are dependent on the configCREATE_LOW_POWER_DEMO setting. */
 #if configCREATE_LOW_POWER_DEMO == 1