From 03597d9162a2fcbdd32e4d187b07a021c221d613 Mon Sep 17 00:00:00 2001
From: Andrew Clink <andrew@elementsmi.com>
Date: Mon, 20 Mar 2017 12:56:17 -0700
Subject: [PATCH] Make FreeRTOS hooks weak; Add example

---
 core/app_main.c                           |  4 +-
 examples/tick_idle_hooks/FreeRTOSConfig.h | 10 ++++
 examples/tick_idle_hooks/Makefile         |  3 ++
 examples/tick_idle_hooks/hooks_example.c  | 56 +++++++++++++++++++++++
 4 files changed, 71 insertions(+), 2 deletions(-)
 create mode 100644 examples/tick_idle_hooks/FreeRTOSConfig.h
 create mode 100644 examples/tick_idle_hooks/Makefile
 create mode 100644 examples/tick_idle_hooks/hooks_example.c

diff --git a/core/app_main.c b/core/app_main.c
index 05ad952..e56b0ab 100644
--- a/core/app_main.c
+++ b/core/app_main.c
@@ -236,12 +236,12 @@ void IRAM vApplicationStackOverflowHook(TaskHandle_t task, char *task_name) {
 }
 
 // .text+0x3d8
-void IRAM vApplicationIdleHook(void) {
+void __attribute__((weak)) IRAM vApplicationIdleHook(void) {
     printf("idle %u\n", WDEV.SYS_TIME);
 }
 
 // .text+0x404
-void IRAM vApplicationTickHook(void) {
+void __attribute__((weak)) IRAM vApplicationTickHook(void) {
     printf("tick %u\n", WDEV.SYS_TIME);
 }
 
diff --git a/examples/tick_idle_hooks/FreeRTOSConfig.h b/examples/tick_idle_hooks/FreeRTOSConfig.h
new file mode 100644
index 0000000..e21d827
--- /dev/null
+++ b/examples/tick_idle_hooks/FreeRTOSConfig.h
@@ -0,0 +1,10 @@
+/**
+
+ Configuration overrides for FreeRTOS.
+
+**/
+
+#define configUSE_IDLE_HOOK 1
+#define configUSE_TICK_HOOK 1
+
+#include_next "FreeRTOSConfig.h"
\ No newline at end of file
diff --git a/examples/tick_idle_hooks/Makefile b/examples/tick_idle_hooks/Makefile
new file mode 100644
index 0000000..717b163
--- /dev/null
+++ b/examples/tick_idle_hooks/Makefile
@@ -0,0 +1,3 @@
+# Simple makefile for simple example
+PROGRAM=simple
+include ../../common.mk
diff --git a/examples/tick_idle_hooks/hooks_example.c b/examples/tick_idle_hooks/hooks_example.c
new file mode 100644
index 0000000..8b9fa49
--- /dev/null
+++ b/examples/tick_idle_hooks/hooks_example.c
@@ -0,0 +1,56 @@
+/* Very basic example that just demonstrates we can run at all!
+ */
+#include "espressif/esp_common.h"
+#include "esp/uart.h"
+#include "FreeRTOS.h"
+#include "task.h"
+#include "queue.h"
+
+void vApplicationIdleHook(void) 
+{
+    // Go to sleep; either deeply (waiting for an event to wake)
+    // or light, allowing FreeRTOS ticks to wake
+    sdk_wifi_set_sleep_type(WIFI_SLEEP_MODEM);
+}
+
+void vApplicationTickHook(void) 
+{
+  // Called every tick
+}
+
+void task1(void *pvParameters)
+{
+    QueueHandle_t *queue = (QueueHandle_t *)pvParameters;
+    printf("Hello from task1!\r\n");
+    uint32_t count = 0;
+    while(1) {
+        vTaskDelay(100);
+        xQueueSend(*queue, &count, 0);
+        count++;
+    }
+}
+
+void task2(void *pvParameters)
+{
+    printf("Hello from task 2!\r\n");
+    QueueHandle_t *queue = (QueueHandle_t *)pvParameters;
+    while(1) {
+        uint32_t count;
+        if(xQueueReceive(*queue, &count, 1000)) {
+            printf("Got %u\n", count);
+        } else {
+            printf("No msg :(\n");
+        }
+    }
+}
+
+static QueueHandle_t mainqueue;
+
+void user_init(void)
+{
+    uart_set_baud(0, 115200);
+    printf("SDK version:%s\n", sdk_system_get_sdk_version());
+    mainqueue = xQueueCreate(10, sizeof(uint32_t));
+    xTaskCreate(task1, "tsk1", 256, &mainqueue, 2, NULL);
+    xTaskCreate(task2, "tsk2", 256, &mainqueue, 2, NULL);
+}