release 1.0.11

examples/PWA/PWA.ino

@@ -0,0 +1,41 @@
+#include <mDash.h>
+
+#define LED_PIN 5
+
+#define WIFI_NAME "YOUR_WIFI_NETWORK"
+#define WIFI_PASS "YOUR_WIFI_PASSWORD"
+#define DEVICE_ID "DEVICE_ID"
+#define DEVICE_TOKEN "DEVICE_TOKEN"
+
+static const char *s_topic = DEVICE_ID "/shadow/update";  // Shadow update topic
+
+static void onShadowDelta(const char *topic, const char *message) {
+  static int led = 0, cnt = 0;
+  double v = 0;
+  printf("DELTA: %s\n", message);
+  if (mDashGetBool(message, "$.state.lights", &led)) {
+    pinMode(LED_PIN, OUTPUT);    // A toggle button has been changed state.
+    digitalWrite(LED_PIN, led);  // Set the LED pin accordingly
+  }
+  if (mDashGetNum(message, "$.state.reboot", &v)) {
+    if (cnt == 0) {     // If the reboot counter is not initialised
+      cnt = v;          // Then initialise it to the current value in a shadow
+    } else {            // Otherwise, the button was pressed on the app
+      *(int *) 0 = 42;  // therefore crash by writing to the zero address
+    }
+  }
+  mDashPublish(s_topic, "{%Q:{%Q:{%Q:%B,%Q:%d}}}", "state", "reported",
+               "lights", led, "reboot", cnt);
+}
+
+void setup() {
+  Serial.begin(115200);
+  mDashStartWithWifi(WIFI_NAME, WIFI_PASS, DEVICE_ID, DEVICE_TOKEN);
+  mDashSubscribe(DEVICE_ID "/shadow/delta", onShadowDelta);
+}
+
+void loop() {
+  delay(1000);  // Sleep 1 second, then report a (simulated) temperature
+  mDashPublish(s_topic, "{%Q:{%Q:{%Q:%g}}}", "state", "reported", "temp",
+               20 + (double) rand() / RAND_MAX * 5.0);
+}

library.properties

@@ -1,5 +1,5 @@
 name=mDash
-version=1.0.10
+version=1.0.11
 author=Cesanta Software Limited <support@cesanta.com>
 maintainer=Cesanta Software Limited <support@cesanta.com>
 sentence=Remote control and OTA for ESP32 via mdash.net IoT backend 

src/mDash.h

@@ -11,16 +11,19 @@ extern "C" {
   mDashInitWithWifi((a), (b), (c), (d), __FILE__)
 #define mDashStart(a, b) mDashInit((a), (b), __FILE__)
 
+enum { MDASH_EV_CONNECTED, MDASH_EV_DISCONNECTED };
+
 // mDash housekeeping
 void mDashInitWithWifi(const char *wifi_name, const char *wifi_pass,
                        const char *device_id, const char *device_pass,
                        const char *app_name);
 void mDashInit(const char *id, const char *pass, const char *app_name);
+void mDashOn(void (*fn)(int, void *), void *);
 void mDashSetLogLevel(int logLevel);  // 0 - no logs, 3 - debug logs
 const char *mDashGetDeviceID(void);
 
 // MQTT API
-bool mDashPublish(const char *topic, const char *message);
+bool mDashPublish(const char *topic, const char *message_fmt, ...);
 void mDashSubscribe(const char *topic, void (*fn)(const char *, const char *));
 
 // RPC API
@@ -33,7 +36,7 @@ const char *mDashGetParams(void *ctx);
 int mDashGetNum(const char *json, const char *json_path, double *value);
 int mDashGetStr(const char *json, const char *json_path, char *dst, int len);
 int mDashGetBase64(const char *json, const char *json_path, char *dst, int len);
-int mDashGetBool(const char *json, const char *json_path, char *dst, int len);
+int mDashGetBool(const char *json, const char *json_path, int *);
 
 #ifdef __cplusplus
 }