Tristan Hughes / Mbed 2 deprecated IOT_sensor_nfc

Code for the IOT wirless sensors demo. Including the NFC communications for setting up the sensor.

Dependencies:   AppNearMe_MuNFC_PN532 RHT03 mbed xbee_lib

main.cpp@0:c3b76a463a8b, 2012-08-30 (annotated)

Committer:
tristanjph
Date:
Thu Aug 30 12:43:33 2012 +0000
Revision:
0:c3b76a463a8b
First commit

Who changed what in which revision?

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tristanjph 0:c3b76a463a8b 1 /* Copyright (c) 2012 Tristan Hughes, MIT License
tristanjph 0:c3b76a463a8b 2 *
tristanjph 0:c3b76a463a8b 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
tristanjph 0:c3b76a463a8b 4 * and associated documentation files (the "Software"), to deal in the Software without restriction,
tristanjph 0:c3b76a463a8b 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
tristanjph 0:c3b76a463a8b 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
tristanjph 0:c3b76a463a8b 7 * furnished to do so, subject to the following conditions:
tristanjph 0:c3b76a463a8b 8 *
tristanjph 0:c3b76a463a8b 9 * The above copyright notice and this permission notice shall be included in all copies or
tristanjph 0:c3b76a463a8b 10 * substantial portions of the Software.
tristanjph 0:c3b76a463a8b 11 *
tristanjph 0:c3b76a463a8b 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
tristanjph 0:c3b76a463a8b 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
tristanjph 0:c3b76a463a8b 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
tristanjph 0:c3b76a463a8b 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
tristanjph 0:c3b76a463a8b 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
tristanjph 0:c3b76a463a8b 17 */
tristanjph 0:c3b76a463a8b 18
tristanjph 0:c3b76a463a8b 19 /*------INCLUDES-----*/
tristanjph 0:c3b76a463a8b 20 #include "mbed.h"
tristanjph 0:c3b76a463a8b 21 #include "RHT03.h"
tristanjph 0:c3b76a463a8b 22 #include "MuNFC.h"
tristanjph 0:c3b76a463a8b 23 #include "xbee.h"
tristanjph 0:c3b76a463a8b 24
tristanjph 0:c3b76a463a8b 25 /*------Definitions----*/
tristanjph 0:c3b76a463a8b 26 #define SLEEP_TIME 30 //Time to wait between reading and sending data
tristanjph 0:c3b76a463a8b 27 #define SENSOR_PACKET 2 //Tells the NFC app device is a sensor
tristanjph 0:c3b76a463a8b 28 #define LOCATION_PRECISION 100000 //The accuracy of the devices location
tristanjph 0:c3b76a463a8b 29
tristanjph 0:c3b76a463a8b 30 /*------Pins------*/
tristanjph 0:c3b76a463a8b 31 DigitalOut red(p30);
tristanjph 0:c3b76a463a8b 32 DigitalOut green(p29);
tristanjph 0:c3b76a463a8b 33 DigitalOut pswitch(p21);
tristanjph 0:c3b76a463a8b 34 AnalogIn light(p15);
tristanjph 0:c3b76a463a8b 35 DigitalIn pir(p16);
tristanjph 0:c3b76a463a8b 36 DigitalIn setup(p14);
tristanjph 0:c3b76a463a8b 37 DigitalOut led_alive(LED1);
tristanjph 0:c3b76a463a8b 38 DigitalOut led_progress(LED2);
tristanjph 0:c3b76a463a8b 39 DigitalOut led_ok(LED3);
tristanjph 0:c3b76a463a8b 40 DigitalOut led_failed(LED4);
tristanjph 0:c3b76a463a8b 41 Serial pc1(USBTX, USBRX);
tristanjph 0:c3b76a463a8b 42
tristanjph 0:c3b76a463a8b 43 /*-----Globals-----*/
tristanjph 0:c3b76a463a8b 44 char send_data[202];
tristanjph 0:c3b76a463a8b 45 int cur_temp,cur_hum,device_serial[8];
tristanjph 0:c3b76a463a8b 46 float cur_light;
tristanjph 0:c3b76a463a8b 47 int cur_pir;
tristanjph 0:c3b76a463a8b 48 int nfc_setup = 0;
tristanjph 0:c3b76a463a8b 49 Ticker val_check;
tristanjph 0:c3b76a463a8b 50
tristanjph 0:c3b76a463a8b 51 /*-----Class Init-----*/
tristanjph 0:c3b76a463a8b 52 MuNFC nfc("000000053Tfi0RwY", 1, p11, p12, p13, p19, p18);
tristanjph 0:c3b76a463a8b 53 xbee xbee_1(p9,p10,p25);
tristanjph 0:c3b76a463a8b 54
tristanjph 0:c3b76a463a8b 55
tristanjph 0:c3b76a463a8b 56 /*-----A class of useful functions for use with NFC----*/
tristanjph 0:c3b76a463a8b 57 class sr_configuration
tristanjph 0:c3b76a463a8b 58 {
tristanjph 0:c3b76a463a8b 59 public:
tristanjph 0:c3b76a463a8b 60 sr_configuration( const uint8_t* ieee_address ) {
tristanjph 0:c3b76a463a8b 61 memcpy( this->ieee_address, ieee_address, 8 );
tristanjph 0:c3b76a463a8b 62 }
tristanjph 0:c3b76a463a8b 63
tristanjph 0:c3b76a463a8b 64 void hexPrint(const char* name, uint8_t* buf, int len) {
tristanjph 0:c3b76a463a8b 65 printf("%s: ", name);
tristanjph 0:c3b76a463a8b 66 for(int i = 0; i < len; i++) {
tristanjph 0:c3b76a463a8b 67 printf("%02x ", buf[i]);
tristanjph 0:c3b76a463a8b 68 }
tristanjph 0:c3b76a463a8b 69 printf("\r\n");
tristanjph 0:c3b76a463a8b 70 }
tristanjph 0:c3b76a463a8b 71
tristanjph 0:c3b76a463a8b 72 void prettyPrint() {
tristanjph 0:c3b76a463a8b 73 printf("Name: %s\r\n", name);
tristanjph 0:c3b76a463a8b 74 hexPrint("IEEE Address", ieee_address, 8);
tristanjph 0:c3b76a463a8b 75 hexPrint("Gateway IEEE Address", gw_ieee_address, 8);
tristanjph 0:c3b76a463a8b 76 hexPrint("Gateway Security Key", gw_security_key, 16);
tristanjph 0:c3b76a463a8b 77 printf("Location: Lat.: %d.%05d; Long.: %d.%05d\r\n",
tristanjph 0:c3b76a463a8b 78 location[0]/LOCATION_PRECISION, (location[0] - (location[0]/LOCATION_PRECISION)*LOCATION_PRECISION ),
tristanjph 0:c3b76a463a8b 79 location[1]/LOCATION_PRECISION, (location[1] - (location[1]/LOCATION_PRECISION)*LOCATION_PRECISION ) );
tristanjph 0:c3b76a463a8b 80 }
tristanjph 0:c3b76a463a8b 81
tristanjph 0:c3b76a463a8b 82 char name[24];
tristanjph 0:c3b76a463a8b 83 uint8_t ieee_address[8];
tristanjph 0:c3b76a463a8b 84 uint8_t gw_ieee_address[8];
tristanjph 0:c3b76a463a8b 85 uint8_t gw_security_key[16];
tristanjph 0:c3b76a463a8b 86 uint32_t location[2]; //lat*100000, long*100000
tristanjph 0:c3b76a463a8b 87 };
tristanjph 0:c3b76a463a8b 88
tristanjph 0:c3b76a463a8b 89 const uint8_t address[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; //setting the IEEE address to 0
tristanjph 0:c3b76a463a8b 90 sr_configuration config(address);
tristanjph 0:c3b76a463a8b 91
tristanjph 0:c3b76a463a8b 92 //Encode call back for NFC
tristanjph 0:c3b76a463a8b 93 void encode_cb(TLVList* tlv, void *)
tristanjph 0:c3b76a463a8b 94 {
tristanjph 0:c3b76a463a8b 95 tlv->putUInt8( SENSOR_PACKET ); //First uint8_t is packet type
tristanjph 0:c3b76a463a8b 96 tlv->putString(config.name);
tristanjph 0:c3b76a463a8b 97 tlv->putArray(config.ieee_address, 8);
tristanjph 0:c3b76a463a8b 98 tlv->putArray(config.gw_ieee_address, 8);
tristanjph 0:c3b76a463a8b 99 tlv->putArray(config.gw_security_key, 16);
tristanjph 0:c3b76a463a8b 100 tlv->putUInt32(config.location[0]);
tristanjph 0:c3b76a463a8b 101 tlv->putUInt32(config.location[1]);
tristanjph 0:c3b76a463a8b 102 }
tristanjph 0:c3b76a463a8b 103
tristanjph 0:c3b76a463a8b 104 //Decode callback for NFC
tristanjph 0:c3b76a463a8b 105 void decode_cb(TLVList* tlv, void *)
tristanjph 0:c3b76a463a8b 106 {
tristanjph 0:c3b76a463a8b 107 TLVList::TLVType t;
tristanjph 0:c3b76a463a8b 108
tristanjph 0:c3b76a463a8b 109 if(tlv->getNext() != UINT8) {
tristanjph 0:c3b76a463a8b 110 return;
tristanjph 0:c3b76a463a8b 111 }
tristanjph 0:c3b76a463a8b 112 if(tlv->getUInt8() == SENSOR_PACKET) { //First uint8_t is packet type
tristanjph 0:c3b76a463a8b 113 if(tlv->getNext() != STRING) {
tristanjph 0:c3b76a463a8b 114 return;
tristanjph 0:c3b76a463a8b 115 }
tristanjph 0:c3b76a463a8b 116 tlv->getString(config.name, 23);
tristanjph 0:c3b76a463a8b 117
tristanjph 0:c3b76a463a8b 118 if(tlv->getNext() != UINT8_ARRAY) {
tristanjph 0:c3b76a463a8b 119 return;
tristanjph 0:c3b76a463a8b 120 }
tristanjph 0:c3b76a463a8b 121 //tlv->getArray(config.ieee_address, 8); //IEEE address is ignored
tristanjph 0:c3b76a463a8b 122
tristanjph 0:c3b76a463a8b 123 if(tlv->getNext() != UINT8_ARRAY) {
tristanjph 0:c3b76a463a8b 124 return;
tristanjph 0:c3b76a463a8b 125 }
tristanjph 0:c3b76a463a8b 126 tlv->getArray(config.gw_ieee_address, 8);
tristanjph 0:c3b76a463a8b 127
tristanjph 0:c3b76a463a8b 128 if(tlv->getNext() != UINT8_ARRAY) {
tristanjph 0:c3b76a463a8b 129 return;
tristanjph 0:c3b76a463a8b 130 }
tristanjph 0:c3b76a463a8b 131 tlv->getArray(config.gw_security_key, 16);
tristanjph 0:c3b76a463a8b 132
tristanjph 0:c3b76a463a8b 133 t = tlv->getNext();
tristanjph 0:c3b76a463a8b 134 if( (t != UINT32) && (t != UINT8) ) {
tristanjph 0:c3b76a463a8b 135 return;
tristanjph 0:c3b76a463a8b 136 }
tristanjph 0:c3b76a463a8b 137 config.location[0] = tlv->getUInt32();
tristanjph 0:c3b76a463a8b 138
tristanjph 0:c3b76a463a8b 139 t = tlv->getNext();
tristanjph 0:c3b76a463a8b 140 if( (t != UINT32) && (t != UINT8) ) {
tristanjph 0:c3b76a463a8b 141 return;
tristanjph 0:c3b76a463a8b 142 }
tristanjph 0:c3b76a463a8b 143 config.location[1] = tlv->getUInt32();
tristanjph 0:c3b76a463a8b 144 }
tristanjph 0:c3b76a463a8b 145 nfc_setup = 1;
tristanjph 0:c3b76a463a8b 146 }
tristanjph 0:c3b76a463a8b 147
tristanjph 0:c3b76a463a8b 148 //NFC event call back (sets LED's on mbed)
tristanjph 0:c3b76a463a8b 149 void event_cb(NFCEvent event, void*)
tristanjph 0:c3b76a463a8b 150 {
tristanjph 0:c3b76a463a8b 151 switch(event) {
tristanjph 0:c3b76a463a8b 152 case NFC_TRANSACTION_STARTED:
tristanjph 0:c3b76a463a8b 153 led_progress=1;
tristanjph 0:c3b76a463a8b 154 led_ok=0;
tristanjph 0:c3b76a463a8b 155 led_failed=0;
tristanjph 0:c3b76a463a8b 156 break;
tristanjph 0:c3b76a463a8b 157 case NFC_TRANSACTION_SUCCESSFUL:
tristanjph 0:c3b76a463a8b 158 led_progress=0;
tristanjph 0:c3b76a463a8b 159 led_ok=1;
tristanjph 0:c3b76a463a8b 160 led_failed=0;
tristanjph 0:c3b76a463a8b 161 break;
tristanjph 0:c3b76a463a8b 162 case NFC_TRANSACTION_FAILED:
tristanjph 0:c3b76a463a8b 163 led_progress=0;
tristanjph 0:c3b76a463a8b 164 led_ok=0;
tristanjph 0:c3b76a463a8b 165 led_failed=1;
tristanjph 0:c3b76a463a8b 166 break;
tristanjph 0:c3b76a463a8b 167 }
tristanjph 0:c3b76a463a8b 168 }
tristanjph 0:c3b76a463a8b 169
tristanjph 0:c3b76a463a8b 170 //Reads values from Sensors
tristanjph 0:c3b76a463a8b 171 void read_values(void)
tristanjph 0:c3b76a463a8b 172 {
tristanjph 0:c3b76a463a8b 173 int attempts=0;
tristanjph 0:c3b76a463a8b 174 red = 1;
tristanjph 0:c3b76a463a8b 175 pswitch = 0; //Power up the sensor network
tristanjph 0:c3b76a463a8b 176 RHT03 humtemp(p22); //Intalise the RHT03 Class
tristanjph 0:c3b76a463a8b 177 wait(1); //Wait to let the powersupply stablise
tristanjph 0:c3b76a463a8b 178 cur_light = light*100; //Read the value of the light sensor *100 to make into percentage
tristanjph 0:c3b76a463a8b 179 while(attempts <= 10 ) {
tristanjph 0:c3b76a463a8b 180 wait(2);
tristanjph 0:c3b76a463a8b 181 if(humtemp.readData() == RHT_ERROR_NONE) attempts = 20; //Read the RHT03 will have 20 attempts to read correclty
tristanjph 0:c3b76a463a8b 182 attempts++;
tristanjph 0:c3b76a463a8b 183 }
tristanjph 0:c3b76a463a8b 184 if(humtemp.getHumidity()>0) { //Used to detect if a valid reading has occured
tristanjph 0:c3b76a463a8b 185 cur_temp = (int)humtemp.getTemperatureC(); //Read current temp
tristanjph 0:c3b76a463a8b 186 cur_hum = (int)humtemp.getHumidity(); //Read current humidity
tristanjph 0:c3b76a463a8b 187 }
tristanjph 0:c3b76a463a8b 188
tristanjph 0:c3b76a463a8b 189 cur_pir = pir; //Read the current PIR value
tristanjph 0:c3b76a463a8b 190 green=1;
tristanjph 0:c3b76a463a8b 191 wait_ms(1);
tristanjph 0:c3b76a463a8b 192 sprintf(send_data,"%x,%2d,%2d,%03.0f,%i; \0",device_serial,cur_temp,cur_hum,cur_light,cur_pir); //Formated data string
tristanjph 0:c3b76a463a8b 193 xbee_1.SendData(send_data); //Send the data to the Xbee
tristanjph 0:c3b76a463a8b 194 wait(5); //Give the Xbee time to send the data
tristanjph 0:c3b76a463a8b 195 green = 0;
tristanjph 0:c3b76a463a8b 196 red = 0;
tristanjph 0:c3b76a463a8b 197 pswitch = 1; //Power the sensors/Xbee down
tristanjph 0:c3b76a463a8b 198 }
tristanjph 0:c3b76a463a8b 199
tristanjph 0:c3b76a463a8b 200
tristanjph 0:c3b76a463a8b 201 //Request NFC setup data (called if setup pin=0)
tristanjph 0:c3b76a463a8b 202 void get_setup(void)
tristanjph 0:c3b76a463a8b 203 {
tristanjph 0:c3b76a463a8b 204 pswitch = 0; //Power sensors and NFC up
tristanjph 0:c3b76a463a8b 205 wait(2); //Let powersupply stabalise
tristanjph 0:c3b76a463a8b 206 memcpy(config.ieee_address,device_serial,8); //Coppy device serial into ieee_address for encode_cb
tristanjph 0:c3b76a463a8b 207
tristanjph 0:c3b76a463a8b 208 nfc.encode(encode_cb, NULL); //Register the encode callback function
tristanjph 0:c3b76a463a8b 209 nfc.decode(decode_cb, NULL); //Register the decode callback function
tristanjph 0:c3b76a463a8b 210 nfc.event(event_cb, NULL); //Register the event callback function
tristanjph 0:c3b76a463a8b 211
tristanjph 0:c3b76a463a8b 212 bool ret = nfc.init(); //Initalise the NFC
tristanjph 0:c3b76a463a8b 213 if(ret) {
tristanjph 0:c3b76a463a8b 214 //printf("\nAppNearMe/MuNFC stack initialized\n");
tristanjph 0:c3b76a463a8b 215
tristanjph 0:c3b76a463a8b 216 } else {
tristanjph 0:c3b76a463a8b 217 //printf("Could not initialize stack\n");
tristanjph 0:c3b76a463a8b 218 while(1) {
tristanjph 0:c3b76a463a8b 219 green = !green;
tristanjph 0:c3b76a463a8b 220 red = !red;
tristanjph 0:c3b76a463a8b 221 wait_ms(500); //Flash both LED's if NFC isn't initalised
tristanjph 0:c3b76a463a8b 222 }
tristanjph 0:c3b76a463a8b 223 }
tristanjph 0:c3b76a463a8b 224
tristanjph 0:c3b76a463a8b 225 red = 1;
tristanjph 0:c3b76a463a8b 226
tristanjph 0:c3b76a463a8b 227 while(nfc_setup==0) { //While the decode callback hasn't been called poll the NFC
tristanjph 0:c3b76a463a8b 228 nfc.poll(100);
tristanjph 0:c3b76a463a8b 229 }
tristanjph 0:c3b76a463a8b 230 red = 0;
tristanjph 0:c3b76a463a8b 231 green = 1;
tristanjph 0:c3b76a463a8b 232 led_ok = 0;
tristanjph 0:c3b76a463a8b 233 xbee_1.ConfigMode(); //Enable config mode on Xbee
tristanjph 0:c3b76a463a8b 234 xbee_1.SetKey((int*)config.gw_security_key); //Set the security key of the Xbee
tristanjph 0:c3b76a463a8b 235 xbee_1.WriteSettings(); //Save the settings to the Xbee
tristanjph 0:c3b76a463a8b 236 xbee_1.ExitConfigMode(); //Exit config
tristanjph 0:c3b76a463a8b 237
tristanjph 0:c3b76a463a8b 238 pswitch = 1; //power down the sensors/NFC
tristanjph 0:c3b76a463a8b 239 wait(1);
tristanjph 0:c3b76a463a8b 240 green = 0;
tristanjph 0:c3b76a463a8b 241 }
tristanjph 0:c3b76a463a8b 242
tristanjph 0:c3b76a463a8b 243 int main()
tristanjph 0:c3b76a463a8b 244 {
tristanjph 0:c3b76a463a8b 245 setup.mode(PullUp);
tristanjph 0:c3b76a463a8b 246 xbee_1.ConfigMode(); //Enable config mode on Xbee
tristanjph 0:c3b76a463a8b 247 xbee_1.GetSerial(device_serial); //Read the Xbee's serial number
tristanjph 0:c3b76a463a8b 248 xbee_1.ExitConfigMode(); //Exit config mode
tristanjph 0:c3b76a463a8b 249 if(setup == 0) get_setup(); //Call setup if setup=0
tristanjph 0:c3b76a463a8b 250 pswitch=1; //make sure sensors are powered down
tristanjph 0:c3b76a463a8b 251 red=1;
tristanjph 0:c3b76a463a8b 252 wait(1);
tristanjph 0:c3b76a463a8b 253 green=1;
tristanjph 0:c3b76a463a8b 254 red=0;
tristanjph 0:c3b76a463a8b 255 wait(1);
tristanjph 0:c3b76a463a8b 256 green=0;
tristanjph 0:c3b76a463a8b 257 read_values(); //Read sensor values
tristanjph 0:c3b76a463a8b 258 val_check.attach(&read_values,SLEEP_TIME); //Read sesnor data every SLEEP_TIME seconds
tristanjph 0:c3b76a463a8b 259 while(1) {
tristanjph 0:c3b76a463a8b 260
tristanjph 0:c3b76a463a8b 261 }
tristanjph 0:c3b76a463a8b 262 return 1;
tristanjph 0:c3b76a463a8b 263 }