Diff: main.cpp

Revision:

0:c3b76a463a8b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Aug 30 12:43:33 2012 +0000
@@ -0,0 +1,263 @@
+/* Copyright (c) 2012 Tristan Hughes, MIT License
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+ * and associated documentation files (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge, publish, distribute,
+ * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or
+ * substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+ * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*------INCLUDES-----*/
+#include "mbed.h"
+#include "RHT03.h"
+#include "MuNFC.h"
+#include "xbee.h"
+
+/*------Definitions----*/
+#define SLEEP_TIME 30 //Time to wait between reading and sending data
+#define SENSOR_PACKET 2 //Tells the NFC app device is a sensor
+#define LOCATION_PRECISION 100000 //The accuracy of the devices location
+
+/*------Pins------*/
+DigitalOut red(p30);
+DigitalOut green(p29);
+DigitalOut pswitch(p21);
+AnalogIn light(p15);
+DigitalIn pir(p16);
+DigitalIn setup(p14);
+DigitalOut led_alive(LED1);
+DigitalOut led_progress(LED2);
+DigitalOut led_ok(LED3);
+DigitalOut led_failed(LED4);
+Serial pc1(USBTX, USBRX);
+
+/*-----Globals-----*/
+char send_data[202];
+int cur_temp,cur_hum,device_serial[8];
+float cur_light;
+int cur_pir;
+int nfc_setup = 0;
+Ticker val_check;
+
+/*-----Class Init-----*/
+MuNFC nfc("000000053Tfi0RwY", 1, p11, p12, p13, p19, p18);
+xbee xbee_1(p9,p10,p25);
+
+
+/*-----A class of useful functions for use with NFC----*/
+class sr_configuration
+{
+public:
+    sr_configuration( const uint8_t* ieee_address ) {
+        memcpy( this->ieee_address, ieee_address, 8 );
+    }
+
+    void hexPrint(const char* name, uint8_t* buf, int len) {
+        printf("%s: ", name);
+        for(int i = 0; i < len; i++) {
+            printf("%02x ", buf[i]);
+        }
+        printf("\r\n");
+    }
+
+    void prettyPrint() {
+        printf("Name: %s\r\n", name);
+        hexPrint("IEEE Address", ieee_address, 8);
+        hexPrint("Gateway IEEE Address", gw_ieee_address, 8);
+        hexPrint("Gateway Security Key", gw_security_key, 16);
+        printf("Location: Lat.: %d.%05d; Long.: %d.%05d\r\n",
+               location[0]/LOCATION_PRECISION, (location[0] - (location[0]/LOCATION_PRECISION)*LOCATION_PRECISION ),
+               location[1]/LOCATION_PRECISION, (location[1] - (location[1]/LOCATION_PRECISION)*LOCATION_PRECISION ) );
+    }
+
+    char name[24];
+    uint8_t ieee_address[8];
+    uint8_t gw_ieee_address[8];
+    uint8_t gw_security_key[16];
+    uint32_t location[2]; //lat*100000, long*100000
+};
+
+const uint8_t address[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; //setting the IEEE address to 0
+sr_configuration config(address);
+
+//Encode call back for NFC
+void encode_cb(TLVList* tlv, void *)
+{
+    tlv->putUInt8( SENSOR_PACKET ); //First uint8_t is packet type
+    tlv->putString(config.name);
+    tlv->putArray(config.ieee_address, 8);
+    tlv->putArray(config.gw_ieee_address, 8);
+    tlv->putArray(config.gw_security_key, 16);
+    tlv->putUInt32(config.location[0]);
+    tlv->putUInt32(config.location[1]);
+}
+
+//Decode callback for NFC
+void decode_cb(TLVList* tlv, void *)
+{
+    TLVList::TLVType t;
+
+    if(tlv->getNext() != UINT8) {
+        return;
+    }
+    if(tlv->getUInt8() == SENSOR_PACKET) { //First uint8_t is packet type
+        if(tlv->getNext() != STRING) {
+            return;
+        }
+        tlv->getString(config.name, 23);
+
+        if(tlv->getNext() != UINT8_ARRAY) {
+            return;
+        }
+        //tlv->getArray(config.ieee_address, 8); //IEEE address is ignored
+
+        if(tlv->getNext() != UINT8_ARRAY) {
+            return;
+        }
+        tlv->getArray(config.gw_ieee_address, 8);
+
+        if(tlv->getNext() != UINT8_ARRAY) {
+            return;
+        }
+        tlv->getArray(config.gw_security_key, 16);
+
+        t = tlv->getNext();
+        if( (t != UINT32) && (t != UINT8) ) {
+            return;
+        }
+        config.location[0] = tlv->getUInt32();
+
+        t = tlv->getNext();
+        if( (t != UINT32) && (t != UINT8) ) {
+            return;
+        }
+        config.location[1] = tlv->getUInt32();
+    }
+    nfc_setup = 1;
+}
+
+//NFC event call back (sets LED's on mbed)
+void event_cb(NFCEvent event, void*)
+{
+    switch(event) {
+        case NFC_TRANSACTION_STARTED:
+            led_progress=1;
+            led_ok=0;
+            led_failed=0;
+            break;
+        case NFC_TRANSACTION_SUCCESSFUL:
+            led_progress=0;
+            led_ok=1;
+            led_failed=0;
+            break;
+        case NFC_TRANSACTION_FAILED:
+            led_progress=0;
+            led_ok=0;
+            led_failed=1;
+            break;
+    }
+}
+
+//Reads values from Sensors
+void read_values(void)
+{
+    int attempts=0;
+    red = 1;
+    pswitch = 0; //Power up the sensor network
+    RHT03 humtemp(p22); //Intalise the RHT03 Class
+    wait(1); //Wait to let the powersupply stablise
+    cur_light = light*100; //Read the value of the light sensor *100 to make into percentage
+    while(attempts <= 10 ) {
+        wait(2);
+        if(humtemp.readData() == RHT_ERROR_NONE) attempts = 20; //Read the RHT03 will have 20 attempts to read correclty
+        attempts++;
+    }
+    if(humtemp.getHumidity()>0) { //Used to detect if a valid reading has occured
+        cur_temp = (int)humtemp.getTemperatureC(); //Read current temp
+        cur_hum = (int)humtemp.getHumidity(); //Read current humidity
+    }
+
+    cur_pir = pir; //Read the current PIR value
+    green=1;
+    wait_ms(1);
+    sprintf(send_data,"%x,%2d,%2d,%03.0f,%i; \0",device_serial,cur_temp,cur_hum,cur_light,cur_pir); //Formated data string
+    xbee_1.SendData(send_data); //Send the data to the Xbee
+    wait(5); //Give the Xbee time to send the data
+    green = 0;
+    red = 0;
+    pswitch = 1; //Power the sensors/Xbee down
+}
+
+
+//Request NFC setup data (called if setup pin=0)
+void get_setup(void)
+{
+    pswitch = 0; //Power sensors and NFC up
+    wait(2); //Let powersupply stabalise
+    memcpy(config.ieee_address,device_serial,8); //Coppy device serial into ieee_address for encode_cb
+
+    nfc.encode(encode_cb, NULL); //Register the encode callback function
+    nfc.decode(decode_cb, NULL); //Register the decode callback function
+    nfc.event(event_cb, NULL); //Register the event callback function
+
+    bool ret = nfc.init(); //Initalise the NFC
+    if(ret) {
+        //printf("\nAppNearMe/MuNFC stack initialized\n");
+
+    } else {
+       //printf("Could not initialize stack\n");
+        while(1) {
+            green = !green;
+            red = !red;
+            wait_ms(500); //Flash both LED's if NFC isn't initalised
+        }
+    }
+
+    red = 1;
+
+    while(nfc_setup==0) { //While the decode callback hasn't been called poll the NFC
+        nfc.poll(100);
+    }
+    red = 0;
+    green = 1;
+    led_ok = 0;
+    xbee_1.ConfigMode(); //Enable config mode on Xbee
+    xbee_1.SetKey((int*)config.gw_security_key); //Set the security key of the Xbee
+    xbee_1.WriteSettings(); //Save the settings to the Xbee
+    xbee_1.ExitConfigMode(); //Exit config
+
+    pswitch = 1; //power down the sensors/NFC
+    wait(1);
+    green = 0;
+}
+
+int main()
+{
+    setup.mode(PullUp);
+    xbee_1.ConfigMode(); //Enable config mode on Xbee
+    xbee_1.GetSerial(device_serial); //Read the Xbee's serial number
+    xbee_1.ExitConfigMode(); //Exit config mode
+    if(setup == 0) get_setup(); //Call setup if setup=0
+    pswitch=1; //make sure sensors are powered down
+    red=1;
+    wait(1);
+    green=1;
+    red=0;
+    wait(1);
+    green=0;
+    read_values(); //Read sensor values
+    val_check.attach(&read_values,SLEEP_TIME); //Read sesnor data every SLEEP_TIME seconds
+    while(1) {
+
+    }
+    return 1;
+}