Diff: main.cpp

Revision:

0:068b9b32e9e8

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Apr 07 13:56:37 2016 +0000
@@ -0,0 +1,97 @@
+// License: Revised BSD License, see LICENSE.TXT, (c)2015 Semtech
+
+#include "mbed.h"
+#include "lmic.h"
+#include "debug.h"
+
+#include "DHT.h"
+
+#define LORAWAN_NET_ID (uint32_t) 0x00000000
+// TODO: enter device address below, for TTN just set ???
+#define LORAWAN_DEV_ADDR (uint32_t) 0x02033333
+#define LORAWAN_ADR_ON 1
+#define LORAWAN_CONFIRMED_MSG_ON 1
+#define LORAWAN_APP_PORT 3//15
+
+DHT sensor(A1, AM2302);
+
+static uint8_t NwkSKey[] = {
+    // TODO: enter network, or use TTN default
+    // e.g. for 2B7E151628AED2A6ABF7158809CF4F3C =>
+    0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6, 
+    0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C
+};
+
+static uint8_t ArtSKey[] = {
+    // TODO: enter application key, or use TTN default
+    // e.g. for 2B7E151628AED2A6ABF7158809CF4F3C =>
+    0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6, 
+    0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C
+};
+
+osjob_t initjob;
+osjob_t sendFrameJob;
+u1_t n = 0;
+
+void os_getArtEui (uint8_t *buf) {} // ignore
+void os_getDevEui (uint8_t *buf) {} // ignore
+void os_getDevKey (uint8_t *buf) {} // ignore
+
+void getTemperatureHumidity(float& temperature, float& humidity) {
+
+    int err = 1;
+  
+    while(err != 0) {
+        wait(2.0f);
+        err = sensor.readData();
+    }
+    
+    temperature = sensor.ReadTemperature(CELCIUS);
+    humidity = sensor.ReadHumidity();
+}
+
+void onSendFrame (osjob_t* j) {
+ 
+    char message[32];
+    
+    float temperature;
+    float humidity;
+
+    getTemperatureHumidity(temperature, humidity);
+    
+    printf("Temperature is %4.2f \r\n", temperature);
+    printf("Humidity is %4.2f \r\n", humidity);
+    
+    sprintf(message, "%4.2f;%4.2f", temperature, humidity);
+    
+    int frameLength = strlen(message); // keep it < 32
+    for (int i = 0; i < frameLength; i++) {
+        LMIC.frame[i] = message[i];
+    }
+    int result = LMIC_setTxData2(LORAWAN_APP_PORT, LMIC.frame, 
+        frameLength, LORAWAN_CONFIRMED_MSG_ON); // calls onEvent()
+        
+    os_setTimedCallback(j, os_getTime() + sec2osticks(60), onSendFrame);
+}
+
+void onInit (osjob_t* j) {
+    LMIC_reset();
+    LMIC_setAdrMode(LORAWAN_ADR_ON);
+    LMIC_setDrTxpow(DR_SF12, 14);
+    LMIC_setSession(LORAWAN_NET_ID, LORAWAN_DEV_ADDR, NwkSKey, ArtSKey);
+    onSendFrame(NULL);
+}
+
+void onEvent (ev_t ev) { // called by lmic.cpp, see also oslmic.h
+    debug_event(ev);
+    if (ev == EV_TXCOMPLETE) {
+        os_setCallback(&sendFrameJob, onSendFrame);
+    }
+}
+
+int main (void) {
+    printf("Temperature Humidity IoT\r\n");
+    os_init();
+    os_setCallback(&initjob, onInit);
+    os_runloop(); // blocking
+}