Diff: main.cpp

Revision:

28:f3b254af78b2

Parent:

27:8b5b0fc59d47

--- a/main.cpp	Mon Jan 27 15:29:50 2020 +0000
+++ b/main.cpp	Mon Jan 27 16:29:54 2020 +0000
@@ -22,6 +22,8 @@
 #include "FATFileSystem.h"
 #include "LittleFileSystem.h"
 
+#include <string> 
+
 // Default network interface object. Don't forget to change the WiFi SSID/password in mbed_app.json if you're using WiFi.
 NetworkInterface *net = NetworkInterface::get_default_instance();
 
@@ -55,7 +57,7 @@
 
 // Declaring pointers for access to Pelion Device Management Client resources outside of main()
 MbedCloudClientResource *res_button;
-MbedCloudClientResource *res_led;
+MbedCloudClientResource *res_pattern_led;
 MbedCloudClientResource *res_post;
 
 // Additional resources for sensor readings
@@ -71,39 +73,38 @@
 // When the device is registered, this variable will be used to access various useful information, like device ID etc.
 static const ConnectorClientEndpointInfo* endpointInfo;
 
-/**
- * PUT handler - sets the value of the built-in LED
- * @param resource The resource that triggered the callback
- * @param newValue Updated value for the resource
- */
-void put_callback(MbedCloudClientResource *resource, m2m::String newValue) {
-    printf("PUT received. New value: %s\n", newValue.c_str());
-    led = atoi(newValue.c_str());
+void pattern_updated(MbedCloudClientResource *resource, m2m::String newValue) {
+    printf("PUT received, new value: %s\n", newValue.c_str());
+}
+
+void blink() {
+    led = !led;
 }
 
 /**
- * POST handler - prints the content of the payload
+ * POST handler
  * @param resource The resource that triggered the callback
  * @param buffer If a body was passed to the POST function, this contains the data.
  *               Note that the buffer is deallocated after leaving this function, so copy it if you need it longer.
  * @param size Size of the body
  */
-void post_callback(MbedCloudClientResource *resource, const uint8_t *buffer, uint16_t size) {
-    printf("POST received (length %u). Payload: ", size);
-    for (size_t ix = 0; ix < size; ix++) {
-        printf("%02x ", buffer[ix]);
-    }
-    printf("\n");
-}
+void blink_callback(MbedCloudClientResource *resource, const uint8_t *buffer, uint16_t size) {
+    printf("POST received. Going to blink LED pattern: %s\n", res_pattern_led->get_value().c_str());
 
-/**
- * Button handler
- * This function will be triggered either by a physical button press or by a ticker every 5 seconds (see below)
- */
-void button_press() {
-    int v = res_button->get_value_int() + 1;
-    res_button->set_value(v);
-    printf("Button clicked %d times\n", v);
+    // Parse the pattern string, and toggle the LED in that pattern
+    string s = string(res_pattern_led->get_value().c_str());
+    size_t i = 0;
+    size_t pos = s.find(':');
+    int total_len = 0;
+    while (pos != string::npos) {
+        int len = atoi(s.substr(i, pos - i).c_str());
+
+        mbed_event_queue()->call_in(total_len + len, &blink);
+
+        total_len += len;
+        i = ++pos;
+        pos = s.find(':', pos);
+    }
 }
 
 /**
@@ -116,13 +117,13 @@
 }
 
 /**
- * Registration callback handler
- * @param endpoint Information about the registered endpoint such as the name (so you can find it back in portal)
- * When the device is registered, this variable will be used to access various useful information, like device ID etc.
+ * Button handler
+ * This function will be triggered either by a physical button press or by a ticker every 5 seconds (see below)
  */
-void registered(const ConnectorClientEndpointInfo *endpoint) {
-    printf("Registered to Pelion Device Management. Endpoint Name: %s\n", endpoint->internal_endpoint_name.c_str());
-    endpointInfo = endpoint;
+void button_press() {
+    int v = res_button->get_value_int() + 1;
+    res_button->set_value(v);
+    printf("Button clicked %d times\n", v);
 }
 
 /**
@@ -139,6 +140,15 @@
     }
 }
 
+/**
+ * Registration callback handler
+ * @param endpoint Information about the registered endpoint such as the name (so you can find it back in portal)
+ * When the device is registered, this variable will be used to access various useful information, like device ID etc.
+ */
+void registered(const ConnectorClientEndpointInfo *endpoint) {
+    printf("Registered to Pelion Device Management. Endpoint Name: %s\n", endpoint->internal_endpoint_name.c_str());
+    endpointInfo = endpoint;
+}
 
 int main(void) {
     printf("\nStarting Simple Pelion Device Management Client example\n");
@@ -191,14 +201,15 @@
     res_button->observable(true);
     res_button->attach_notification_callback(button_callback);
 
-    res_led = client.create_resource("3201/0/5853", "LED State");
-    res_led->set_value(led.read());
-    res_led->methods(M2MMethod::GET | M2MMethod::PUT);
-    res_led->attach_put_callback(put_callback);
+    res_pattern_led = client.create_resource("3201/0/5853", "LED Pattern");
+    //res_pattern_led->set_value("500:500:500:500:500:500:500:500");
+    res_pattern_led->set_value("100:100:100:100:100:100:100:100");
+    res_pattern_led->methods(M2MMethod::GET | M2MMethod::PUT);
+    res_pattern_led->attach_put_callback(pattern_updated);
 
-    res_post = client.create_resource("3300/0/5605", "Execute Function");
+    res_post = client.create_resource("3201/0/5850", "Blink Action");
     res_post->methods(M2MMethod::POST);
-    res_post->attach_post_callback(post_callback);
+    res_post->attach_post_callback(eventQueue.event(&blink_callback));
 
     // Sensor resources
     res_temperature = client.create_resource("3303/0/5700", "Temperature (C)");
@@ -223,6 +234,7 @@
     button.fall(eventQueue.event(&button_press));
     printf("Press the user button to increment the LwM2M resource value...\n");
 
+    // The timer fires on an interrupt context, but debounces it to the eventqueue, so it's safe to do network operations
     Ticker timer;
     timer.attach(eventQueue.event(&sensors_update), SENSORS_POLL_INTERVAL);