Diff: roam_v1.cpp

Revision:

0:b6b64c1e74bb

diff -r 000000000000 -r b6b64c1e74bb roam_v1.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/roam_v1.cpp	Wed Apr 01 16:16:13 2015 +0000
@@ -0,0 +1,196 @@
+/** Seed Team 20 - Michael Zonnenberg
+    Board: Arch GPRS V2
+    Sensors: DHT11 temp&humidity
+ */
+ 
+ #include "mbed.h"
+ #include "DHT.h"
+ #include "SDFileSystem.h"
+ #include "GPRSInterface.h"
+ #include "HTTPClient.h"
+ #include "ARCH_GPRS_Sleep.h"
+
+ 
+//LED Blink Functions
+DigitalOut yellowled(LED1);
+DigitalOut redled(LED2);
+DigitalOut greenled(LED3);
+DigitalOut blueled(LED4);
+void blinkYELLOW(void){
+    yellowled = 1;
+    wait(0.5);
+    yellowled = 0;
+    wait(0.5);
+    yellowled = 1;
+    wait(0.5);
+    yellowled = 0;
+    wait(0.5);  
+}
+void blinkRED(void){
+    redled = 1;
+    wait(0.5);
+    redled = 0;
+    wait(0.5);
+    redled = 1;
+    wait(0.5);
+    redled = 0;
+    wait(0.5);  
+}
+void blinkBLUE(void){
+    blueled = 1;
+    wait(0.5);
+    blueled = 0;
+    wait(0.5);
+    blueled = 1;
+    wait(0.5);
+    blueled = 0;
+    wait(0.5);  
+}
+void blinkGREEN(void){
+    greenled = 1;
+    wait(0.5);
+    greenled = 0;
+    wait(0.5);
+    greenled = 1;
+    wait(0.5);
+    greenled = 0;
+    wait(0.5);  
+}
+
+
+
+#define PIN_PWR                 P1_2    //power up gprs module
+#define PIN_PWR_KEY             P1_7
+#define PIN_TX                  P1_27
+#define PIN_RX                  P1_26
+DigitalOut power(PIN_PWR);
+DigitalOut powerKey(PIN_PWR_KEY);
+void gprsPowerUp(void)
+{
+    power = 1;
+    wait(2);
+    power = 0;
+    wait(2);
+ 
+    powerKey = 0;
+    wait(1);
+    powerKey = 1;
+    wait(2);
+    powerKey = 0;
+    wait(3);
+}
+void gprsPowerDown(void)
+{
+   power = 1;
+   wait(2);
+   power = 0;
+   wait(2); 
+}
+
+#define TEST_HTTP_GET       1
+#define TEST_HTTP_POST      1
+#define TEST_HTTP_PUT       1
+#define TEST_HTTP_DELETE    1
+
+#define TS_FEED_ID              25152
+#define TS_API                  "QY931S2NP23LG9IM"
+
+char* thingSpeakUrl = "http://api.thingspeak.com/update";
+char* thingSpeakKey = "QY931S2NP23LG9IM";
+char urlBuffer[256];
+char timeBuffer[64];
+char str[1024];
+GPRSInterface gprs(PIN_TX,PIN_RX,115200,"internetd.gdsp",NULL,NULL);
+HTTPClient http;
+
+/** 
+    Function sends args to thingskpeak
+    @param temperature The temperaure measurment from sensor
+    @param humidity The humidity measurment from sensor
+ */
+void sendToThingSpeak(float temperature, float humidity){
+    //turn on cellular module
+    gprsPowerUp();
+
+    gprs.init();
+    
+    int count = 0;
+    while(false == gprs.connect() && count < 5) {
+        wait(2);
+        count += 1;
+    }
+
+    // format url here
+    urlBuffer[0] = 0;
+    sprintf(urlBuffer, "%s?key=%s&field1=%f&field2=%f", thingSpeakUrl, thingSpeakKey, temperature, humidity);
+
+    // send request
+    HTTPResult res = http.get(urlBuffer, str,128);
+    // and verify the result
+    if (res != HTTP_OK) {
+        blinkRED();
+    } else {
+        blinkGREEN();
+    }
+    gprsPowerDown();
+}
+
+/** 
+    Function sends args to thingskpeak
+    @return temp and humid values from DHT11 sensor
+ */
+DHT sensor(P1_14, DHT11);
+DigitalOut POWER(P1_3); //drive low to activate pins
+void getTempHumid(float* temp, float* humid){
+   int err = 1;
+    wait(1); // wait 1 second for device stable status
+    POWER.write(0);
+    while (err != 0) {
+        err = sensor.readData();
+        *temp = sensor.ReadTemperature(FARENHEIT);
+        *humid = sensor.ReadHumidity();
+        wait(1);
+        }     
+}   
+
+/** 
+    Function writes data to sd card (comma seperated)
+    @param temperature The temperaure measurment from sensor
+    @param humidity The humidity measurment from sensor
+ */
+SDFileSystem sd(P1_22, P1_21, P1_20, P1_23, "sd"); // the pinout on the /Arch GPRS v2 mbed board.
+void sdWrite(double temp, double humid)
+{
+    mkdir("/sd", 0777);           // All other times open file in append mode
+    FILE *fp = fopen("/sd/node1.csv","a");
+    fprintf(fp,"%4.2f, %4.2f\r\n",temp, humid);
+    fclose(fp);
+    blinkBLUE();
+}
+
+///////////////////////////////////////////////////////////////////////
+#define BROADCAST_TIME      25     //sleep time
+float temp,humid; 
+
+int main(){
+    
+    wdt_sleep.wdtClkSetup(WDTCLK_SRC_IRC_OSC);
+    
+    PWRON:
+    // get temp and humidity
+    getTempHumid(&temp, &humid);
+    
+    sdWrite(temp, humid);
+
+    // send data to ThingSpeak.com
+    sendToThingSpeak(temp, humid);
+    
+    //sleep
+    wdt_sleep.sleep(BROADCAST_TIME);
+    
+    //wake
+    goto PWRON;
+    
+        
+    
+}
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