From 8133945bc624bfde2dc5f26fa7d6b55e82524a62 Mon Sep 17 00:00:00 2001
From: Stefan Agner <stefan.agner@toradex.com>
Date: Thu, 2 Mar 2017 15:04:37 -0800
Subject: Add idle task, call WFI when idle to save some power

---
 examples/imx7_colibri_m4/low_power_demo/FreeRTOSConfig.h | 2 +-
 examples/imx7_colibri_m4/low_power_demo/main.c           | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/examples/imx7_colibri_m4/low_power_demo/FreeRTOSConfig.h b/examples/imx7_colibri_m4/low_power_demo/FreeRTOSConfig.h
index 0ec37ab..45eccbb 100644
--- a/examples/imx7_colibri_m4/low_power_demo/FreeRTOSConfig.h
+++ b/examples/imx7_colibri_m4/low_power_demo/FreeRTOSConfig.h
@@ -85,7 +85,7 @@
 #endif
 
 #define configUSE_PREEMPTION              1
-#define configUSE_IDLE_HOOK               0
+#define configUSE_IDLE_HOOK               1
 #define configUSE_TICK_HOOK               0
 #define configCPU_CLOCK_HZ                (240000000ul)
 #define configTICK_RATE_HZ                ((TickType_t)1000)
diff --git a/examples/imx7_colibri_m4/low_power_demo/main.c b/examples/imx7_colibri_m4/low_power_demo/main.c
index 8c54bf7..24f2e66 100644
--- a/examples/imx7_colibri_m4/low_power_demo/main.c
+++ b/examples/imx7_colibri_m4/low_power_demo/main.c
@@ -318,6 +318,15 @@ void LCD_Task(void *pvParameters)
 	}*/
 }
 
+/*!
+ * @brief Custom function to be run in idletask
+ */
+void vApplicationIdleHook(void)
+{
+	/* Waiting for Wake up event. */
+	__WFI();
+}
+
 /*!
  * @brief Main entry point
  */
-- 
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