Eric Tsai / Mbed 2 deprecated BLE_Sensor

BLE ADV sensor for 2-pin interrupt (i.e. window/door sensor w/ reed switch)

Dependencies:   BLE_API mbed nRF51822

Basic door/window sensor for nRF51822 BLE modules.

main.cpp@12:9bb01e063498, 2017-08-27 (annotated)

Committer:
electronichamsters
Date:
Sun Aug 27 05:48:45 2017 +0000
Revision:
12:9bb01e063498
Parent:
11:4f925834167d 
make periodic updates based on i/o events.  comments.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
electronichamsters 12:9bb01e063498 1 /*
electronichamsters 12:9bb01e063498 2 * Copyright (c) Eric Tsai 2017
electronichamsters 12:9bb01e063498 3 *
electronichamsters 12:9bb01e063498 4 *
electronichamsters 12:9bb01e063498 5 * Licensed under the Apache License, Version 2.0 (the "License");
electronichamsters 12:9bb01e063498 6 * you may not use this file except in compliance with the License.
electronichamsters 12:9bb01e063498 7 * You may obtain a copy of the License at
electronichamsters 12:9bb01e063498 8 *
electronichamsters 12:9bb01e063498 9 * http://www.apache.org/licenses/LICENSE-2.0
electronichamsters 12:9bb01e063498 10 *
electronichamsters 12:9bb01e063498 11 * Unless required by applicable law or agreed to in writing, software
electronichamsters 12:9bb01e063498 12 * distributed under the License is distributed on an "AS IS" BASIS,
electronichamsters 12:9bb01e063498 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
electronichamsters 12:9bb01e063498 14 * See the License for the specific language governing permissions and
electronichamsters 12:9bb01e063498 15 * limitations under the License.
electronichamsters 12:9bb01e063498 16 *
electronichamsters 12:9bb01e063498 17 *
electronichamsters 12:9bb01e063498 18 * Credit: started with the basic BLE Temperature Beacon code from mbed Bluetooth Low Energy team
electronichamsters 12:9bb01e063498 19 * https://developer.mbed.org/teams/Bluetooth-Low-Energy/code/BLE_TemperatureBeacon/file/0a8bbb6dea16/main.cpp
electronichamsters 12:9bb01e063498 20 *
electronichamsters 12:9bb01e063498 21 * BLE sensor as Beacon advertisements. Intended to function with specific BLE observer.
electronichamsters 12:9bb01e063498 22 * Tested on nRF51822 targets on mbed.
electronichamsters 12:9bb01e063498 23 * keywords: todo, tochange
electronichamsters 12:9bb01e063498 24 */
electronichamsters 8:46c5e0bfab05 25
sunsmile2015 0:3dc6e424dba0 26
electronichamsters 8:46c5e0bfab05 27 extern "C"
electronichamsters 8:46c5e0bfab05 28 {
electronichamsters 12:9bb01e063498 29 #include "nrf_ecb.h" //required to call the ecb functions for encryption
electronichamsters 8:46c5e0bfab05 30 }
electronichamsters 8:46c5e0bfab05 31
sunsmile2015 0:3dc6e424dba0 32 #include "mbed.h"
rgrover1 5:f4d74a8cad43 33 #include "toolchain.h"
sunsmile2015 0:3dc6e424dba0 34 #include "ble/BLE.h"
sunsmile2015 0:3dc6e424dba0 35 #include "TMP_nrf51/TMP_nrf51.h"
sunsmile2015 0:3dc6e424dba0 36
electronichamsters 8:46c5e0bfab05 37
electronichamsters 12:9bb01e063498 38 /*******************************************************************************************
electronichamsters 12:9bb01e063498 39 * START tochange: items that may need customization depending on sensors, hardware, and desired behavior
electronichamsters 12:9bb01e063498 40 *******************************************************************************************/
electronichamsters 12:9bb01e063498 41 const uint16_t Periodic_Update_Seconds = 20; //number of seconds between periodic I/O status re-transmits 900s =15 min.
electronichamsters 12:9bb01e063498 42 #define MyDebugEnb 0 //enables serial output for debug, consumes ~1mA when idle
electronichamsters 12:9bb01e063498 43 uint8_t magnet_near=0; //this I/O, specifically for reed switch sensor
electronichamsters 10:79e8f92ef156 44
electronichamsters 11:4f925834167d 45
electronichamsters 12:9bb01e063498 46 /* hardware interrupt pins, selected based on hardware
electronichamsters 12:9bb01e063498 47 *Syntax: Pin "P0.4" on nRF51822 documentation is mbed "p4".
electronichamsters 12:9bb01e063498 48 * InterruptIn is pulled-up. GND the pin to activate.
electronichamsters 12:9bb01e063498 49 */
electronichamsters 12:9bb01e063498 50 InterruptIn button1(p0); //nRF51822 P0.0
electronichamsters 12:9bb01e063498 51 InterruptIn button2(p1); //nRF51822 P0.1
electronichamsters 12:9bb01e063498 52 /******************************************************************************************
electronichamsters 12:9bb01e063498 53 * END tochange
electronichamsters 12:9bb01e063498 54 *******************************************************************************************/
electronichamsters 8:46c5e0bfab05 55
electronichamsters 12:9bb01e063498 56
electronichamsters 8:46c5e0bfab05 57 #if MyDebugEnb
electronichamsters 12:9bb01e063498 58 // if you see ~1mA consumption during sleep, that's because MyDebugEnb==1, it's enabled.
electronichamsters 8:46c5e0bfab05 59 Serial device(p9, p11); //nRF51822 uart : TX=p9. RX=p11
electronichamsters 8:46c5e0bfab05 60 #endif
electronichamsters 8:46c5e0bfab05 61
electronichamsters 12:9bb01e063498 62 static Ticker Tic_Stop_Adv; //used to stop advertising after X seconds
electronichamsters 12:9bb01e063498 63 static Ticker Tic_Debounce; //debounce I/O
electronichamsters 12:9bb01e063498 64 static Ticker Tic_Periodic; //transmit sensor data on a periodic basis outside I/O events
electronichamsters 8:46c5e0bfab05 65
electronichamsters 12:9bb01e063498 66 const uint16_t Periodicity = 1800; //birthday periodicity used for spoof checking, must match gateway. Should be 1800 seconds for 30minutes
electronichamsters 12:9bb01e063498 67 static Timer Tmr_From_Birthday; //holds number of seconds since birthday, for spoof detection
electronichamsters 12:9bb01e063498 68 static Ticker Tic_Birthday; //resets Tmr_From_Birthday every Periodicity seconds, for spoof detection
electronichamsters 12:9bb01e063498 69
electronichamsters 8:46c5e0bfab05 70
electronichamsters 12:9bb01e063498 71 static bool Flag_Update_IO = false; //flag to indicate event is hardware interrupt
electronichamsters 12:9bb01e063498 72 static bool Flag_Periodic_Call = false; //flag to indicate event is periodic callback
electronichamsters 12:9bb01e063498 73 static bool Flag_Detach_Adv_Tic = false; //flag to stop advertising
electronichamsters 12:9bb01e063498 74
electronichamsters 12:9bb01e063498 75 /* Optional: Device Name, add for human read-ability */
electronichamsters 12:9bb01e063498 76 const static char DEVICE_NAME[] = "LOL";
electronichamsters 8:46c5e0bfab05 77
electronichamsters 8:46c5e0bfab05 78
electronichamsters 12:9bb01e063498 79 //Advertisement Data
electronichamsters 12:9bb01e063498 80 //note: AdvData[] holds bytes [5] to byte [30] of entire advertising data. The user content part after ADV flag and header
electronichamsters 12:9bb01e063498 81 static uint8_t AdvData[] = {0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0}; //26 Bytes manufacturer specific data
electronichamsters 12:9bb01e063498 82 char buffer[10]={0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; //hold I/O reading json
electronichamsters 12:9bb01e063498 83 char bat_volt_char[6] = {0, 0, 0, 0, 0, 0}; //hold json for battery reading
electronichamsters 12:9bb01e063498 84 uint8_t Adv_First_Section[10]; //holds the first several bytes with a pattern indicating this sensor is "one of ours"
electronichamsters 12:9bb01e063498 85 uint8_t mac_reverse[6] = {0x0,0x0,0x0,0x0,0x0,0x0}; //mac address for this module
rgrover1 5:f4d74a8cad43 86
electronichamsters 12:9bb01e063498 87 /***** Advertisement structure is 31 Bytes ****************
electronichamsters 12:9bb01e063498 88
electronichamsters 12:9bb01e063498 89 https://docs.mbed.com/docs/ble-intros/en/latest/Advanced/CustomGAP/
electronichamsters 8:46c5e0bfab05 90
electronichamsters 12:9bb01e063498 91 Full Advertisement:
electronichamsters 12:9bb01e063498 92 First 5 bytes are set by stack according to flag and header parameters.
electronichamsters 12:9bb01e063498 93 Last 26 bytes are user data
electronichamsters 12:9bb01e063498 94 -- tabbed --
electronichamsters 12:9bb01e063498 95 Byte 0 | AD1 Length | 0x02 | AD1 is 2 bytes long
electronichamsters 12:9bb01e063498 96 Byte 1 | AD1 Type | 0x01 | AD1 Data interpreted as flag
electronichamsters 12:9bb01e063498 97 Byte 2 | AD1 Data 0 | 0x06 | AD1 Data flag mean "00000110"
electronichamsters 12:9bb01e063498 98 Byte 3 | AD2 Length | 0x1B | AD2 is 27 bytes (0x1B) long (rest of this data)
electronichamsters 12:9bb01e063498 99 Byte 4 | AD2 Type | 0xFF | 0xFF mean Manufacturer Specific Data
electronichamsters 12:9bb01e063498 100 Byte 5 | AD2 Data 0 | ADV_Data[0] | "our device" flag, MAC[3]
electronichamsters 12:9bb01e063498 101 Byte 6 | AD2 Data 1 | ADV_Data[1] | "out device" flag, MAC[2]
electronichamsters 12:9bb01e063498 102 Byte 7 | AD2 Data 2 | ADV_Data[2] | "out device" flag, MAC[1]
electronichamsters 12:9bb01e063498 103 Byte 8 | AD2 Data 3 | ADV_Data[3] | "out device" flag, MAC[0]
electronichamsters 12:9bb01e063498 104 Byte 9 | AD2 Data 4 | ADV_Data[4] | battery voltage json MSB, ie 3 in 3.14
electronichamsters 12:9bb01e063498 105 Byte 10 | AD2 Data 5 | ADV_Data[5] | battery voltage json
electronichamsters 12:9bb01e063498 106 Byte 11 | AD2 Data 6 | ADV_Data[6] | battery voltage json
electronichamsters 12:9bb01e063498 107 Byte 12 | AD2 Data 7 | ADV_Data[7] | battery voltage json LSB, ie 4 in 3.14
electronichamsters 12:9bb01e063498 108 Byte 13 | AD2 Data 8 | ADV_Data[8] | reserved
electronichamsters 12:9bb01e063498 109 Byte 14 | AD2 Data 9 | ADV_Data[9] | reserved
electronichamsters 12:9bb01e063498 110 Byte 15 | AD2 Data 10 | ADV_Data[10] Encrypted | spoof - clock high byte, range 0 to 1800 seconds
electronichamsters 12:9bb01e063498 111 Byte 16 | AD2 Data 11 | ADV_Data[11] Encrypted | spoof - clock low byte
electronichamsters 12:9bb01e063498 112 Byte 17 | AD2 Data 12 | ADV_Data[12] Encrypted | Xmit_Cnt - increments per transmit event, 0-255
electronichamsters 12:9bb01e063498 113 Byte 18 | AD2 Data 13 | ADV_Data[13] Encrypted | JSON[0]
electronichamsters 12:9bb01e063498 114 Byte 19 | AD2 Data 14 | ADV_Data[14] Encrypted | JSON[1]
electronichamsters 12:9bb01e063498 115 Byte 20 | AD2 Data 15 | ADV_Data[15] Encrypted | JSON[2]
electronichamsters 12:9bb01e063498 116 Byte 21 | AD2 Data 16 | ADV_Data[16] Encrypted | JSON[3]
electronichamsters 12:9bb01e063498 117 Byte 22 | AD2 Data 17 | ADV_Data[17] Encrypted | JSON[4]
electronichamsters 12:9bb01e063498 118 Byte 23 | AD2 Data 18 | ADV_Data[18] Encrypted | JSON[5]
electronichamsters 12:9bb01e063498 119 Byte 24 | AD2 Data 19 | ADV_Data[19] Encrypted | JSON[6]
electronichamsters 12:9bb01e063498 120 Byte 25 | AD2 Data 20 | ADV_Data[20] Encrypted | JSON[7]
electronichamsters 12:9bb01e063498 121 Byte 26 | AD2 Data 21 | ADV_Data[21] Encrypted | JSON[8]
electronichamsters 12:9bb01e063498 122 Byte 27 | AD2 Data 22 | ADV_Data[22] Encrypted | JSON[9]
electronichamsters 12:9bb01e063498 123 Byte 28 | AD2 Data 23 | ADV_Data[23] Encrypted | JSON[10]
electronichamsters 12:9bb01e063498 124 Byte 29 | AD2 Data 24 | ADV_Data[24] Encrypted | JSON[11]
electronichamsters 12:9bb01e063498 125 Byte 30 | AD2 Data 25 | ADV_Data[25] Encrypted | JSON[12]
electronichamsters 8:46c5e0bfab05 126
electronichamsters 12:9bb01e063498 127 ***************************************************/
electronichamsters 8:46c5e0bfab05 128
electronichamsters 8:46c5e0bfab05 129
electronichamsters 8:46c5e0bfab05 130 static uint8_t key[16] = {0x1,0x2,0x3,0x4,0x1,0x2,0x3,0x4,0x1,0x2,0x3,0x4,0x1,0x2,0x3,0x4};
electronichamsters 8:46c5e0bfab05 131 //26 bytes adv data
electronichamsters 8:46c5e0bfab05 132 static uint8_t encrypted[26] = {0x0,0x0,0x0,0x1,0x1,0x1,0x2,0x2,0x2,0x3,0x3,0x3,0x4,0x4,0x4,0x5,0x5,0x5,0x6,0x6,0x6,0x7,0x7,0x7,0x8,0x8}; /* Example of hex data */
electronichamsters 8:46c5e0bfab05 133 //static uint8_t key_buf[16] = {0x1,0x2,0x3,0x4,0x1,0x2,0x3,0x4,0x1,0x2,0x3,0x4,0x1,0x2,0x3,0x4};
electronichamsters 8:46c5e0bfab05 134 static uint8_t key_buf[16] = {0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x1, 0x2};
electronichamsters 8:46c5e0bfab05 135 static uint8_t src_buf[16] = {0x1,0x2,0x3,0x4,0x1,0x2,0x3,0x4,0x1,0x2,0x3,0x4,0x1,0x2,0x3,0x4};
electronichamsters 8:46c5e0bfab05 136 static uint8_t des_buf[16] = {0x1,0x2,0x3,0x4,0x1,0x2,0x3,0x4,0x1,0x2,0x3,0x4,0x1,0x2,0x3,0x4};
electronichamsters 8:46c5e0bfab05 137
electronichamsters 10:79e8f92ef156 138 uint8_t Xmit_Cnt = 1;
electronichamsters 8:46c5e0bfab05 139
electronichamsters 8:46c5e0bfab05 140
electronichamsters 8:46c5e0bfab05 141
electronichamsters 8:46c5e0bfab05 142 /* **** NOT USED **** */
electronichamsters 8:46c5e0bfab05 143 //16byte UUID loading happens here
electronichamsters 8:46c5e0bfab05 144 //Look at <GapAdvertisingData.h> for rest of definition
sunsmile2015 4:e5fa4c8838db 145 struct ApplicationData_t {
electronichamsters 8:46c5e0bfab05 146 //Byte 0: AppID High Byte
electronichamsters 8:46c5e0bfab05 147 //Byte 1: AppID Low Byte
electronichamsters 8:46c5e0bfab05 148 //Byte 2: sensor High Word
electronichamsters 8:46c5e0bfab05 149 //Byte 3:
electronichamsters 8:46c5e0bfab05 150 //Byte 4:
electronichamsters 8:46c5e0bfab05 151 //Byte 5: sensor Low Byte
electronichamsters 8:46c5e0bfab05 152
electronichamsters 8:46c5e0bfab05 153
electronichamsters 8:46c5e0bfab05 154 //app ID is 16 bit, (0xFEFE)
electronichamsters 8:46c5e0bfab05 155 uint16_t applicationSpecificId; /* An ID used to identify temperature value in the manufacture specific AD data field */
electronichamsters 8:46c5e0bfab05 156
electronichamsters 8:46c5e0bfab05 157 TMP_nrf51::TempSensorValue_t tmpSensorValue; /* this is a float (32-bit), user data */
rgrover1 5:f4d74a8cad43 158 } PACKED;
sunsmile2015 0:3dc6e424dba0 159
electronichamsters 8:46c5e0bfab05 160
electronichamsters 8:46c5e0bfab05 161
electronichamsters 8:46c5e0bfab05 162 void debounce_Callback(void)
electronichamsters 8:46c5e0bfab05 163 {
electronichamsters 12:9bb01e063498 164 Tic_Debounce.detach();
electronichamsters 12:9bb01e063498 165 Flag_Update_IO = true; //start advertising
electronichamsters 8:46c5e0bfab05 166 /* Note that the buttonPressedCallback() executes in interrupt context, so it is safer to access
electronichamsters 8:46c5e0bfab05 167 * BLE device API from the main thread. */
electronichamsters 12:9bb01e063498 168
electronichamsters 8:46c5e0bfab05 169 }
electronichamsters 8:46c5e0bfab05 170
electronichamsters 12:9bb01e063498 171 //ISR for I/O interrupt
electronichamsters 8:46c5e0bfab05 172 void buttonPressedCallback(void)
sunsmile2015 2:b935358da5ba 173 {
electronichamsters 12:9bb01e063498 174 Tic_Debounce.attach(debounce_Callback, 1); //ok to attach multiple times, recent one wins
electronichamsters 8:46c5e0bfab05 175 }
rgrover1 5:f4d74a8cad43 176
electronichamsters 12:9bb01e063498 177 //ISR for I/O interrupt
electronichamsters 8:46c5e0bfab05 178 void buttonReleasedCallback(void)
electronichamsters 8:46c5e0bfab05 179 {
electronichamsters 8:46c5e0bfab05 180
electronichamsters 12:9bb01e063498 181 Tic_Debounce.attach(debounce_Callback, 1);
electronichamsters 8:46c5e0bfab05 182 }
electronichamsters 8:46c5e0bfab05 183
electronichamsters 8:46c5e0bfab05 184
electronichamsters 8:46c5e0bfab05 185 void stop_adv_Callback(void)
electronichamsters 8:46c5e0bfab05 186 {
electronichamsters 8:46c5e0bfab05 187 //stops advertising after X seconds
electronichamsters 8:46c5e0bfab05 188 /* Note that the Callback() executes in interrupt context, so it is safer to do
rgrover1 5:f4d74a8cad43 189 * heavy-weight sensor polling from the main thread (where we should be able to block safely, if needed). */
electronichamsters 12:9bb01e063498 190 Flag_Detach_Adv_Tic = true;
electronichamsters 12:9bb01e063498 191
electronichamsters 12:9bb01e063498 192 }
electronichamsters 8:46c5e0bfab05 193
electronichamsters 12:9bb01e063498 194 /* ****************************************
electronichamsters 12:9bb01e063498 195 * Decides what actions need to be performed on periodic basis
electronichamsters 12:9bb01e063498 196 *******************************************/
electronichamsters 12:9bb01e063498 197 void periodic_Callback(void)
electronichamsters 12:9bb01e063498 198 {
electronichamsters 12:9bb01e063498 199 Flag_Update_IO = true;
electronichamsters 12:9bb01e063498 200 Flag_Periodic_Call = true;
electronichamsters 8:46c5e0bfab05 201 }
electronichamsters 8:46c5e0bfab05 202
electronichamsters 8:46c5e0bfab05 203
electronichamsters 12:9bb01e063498 204 /* ****************************************
electronichamsters 12:9bb01e063498 205 * No RTC available, tickers only have a 35 minute range.
electronichamsters 12:9bb01e063498 206 * So periodicity for spoof avoidance is set to 30 minutes
electronichamsters 12:9bb01e063498 207 *******************************************/
electronichamsters 10:79e8f92ef156 208 void clock_reset_Callback(void)
electronichamsters 10:79e8f92ef156 209 {
electronichamsters 10:79e8f92ef156 210 #if MyDebugEnb
electronichamsters 10:79e8f92ef156 211 device.printf("===== reset timer =====");
electronichamsters 10:79e8f92ef156 212 device.printf("\r\n");
electronichamsters 10:79e8f92ef156 213 #endif
electronichamsters 12:9bb01e063498 214 Tmr_From_Birthday.reset();
electronichamsters 10:79e8f92ef156 215 };
electronichamsters 10:79e8f92ef156 216
electronichamsters 12:9bb01e063498 217
rgrover1 5:f4d74a8cad43 218 void setupApplicationData(ApplicationData_t &appData)
sunsmile2015 4:e5fa4c8838db 219 {
electronichamsters 8:46c5e0bfab05 220 // two byte ID: 0xFEFE
electronichamsters 8:46c5e0bfab05 221 static const uint16_t APP_SPECIFIC_ID_TEST = 0xFEFE; //2 byte application ID
andresag 7:0a8bbb6dea16 222
sunsmile2015 4:e5fa4c8838db 223 appData.applicationSpecificId = APP_SPECIFIC_ID_TEST;
sunsmile2015 0:3dc6e424dba0 224 }
sunsmile2015 0:3dc6e424dba0 225
electronichamsters 8:46c5e0bfab05 226
electronichamsters 8:46c5e0bfab05 227
andresag 7:0a8bbb6dea16 228 /**
andresag 7:0a8bbb6dea16 229 * This function is called when the ble initialization process has failled
andresag 7:0a8bbb6dea16 230 */
andresag 7:0a8bbb6dea16 231 void onBleInitError(BLE &ble, ble_error_t error)
andresag 7:0a8bbb6dea16 232 {
andresag 7:0a8bbb6dea16 233 /* Initialization error handling should go here */
andresag 7:0a8bbb6dea16 234 }
andresag 7:0a8bbb6dea16 235
electronichamsters 12:9bb01e063498 236
electronichamsters 12:9bb01e063498 237
andresag 7:0a8bbb6dea16 238 /**
andresag 7:0a8bbb6dea16 239 * Callback triggered when the ble initialization process has finished
andresag 7:0a8bbb6dea16 240 */
andresag 7:0a8bbb6dea16 241 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
sunsmile2015 2:b935358da5ba 242 {
andresag 7:0a8bbb6dea16 243 BLE& ble = params->ble;
andresag 7:0a8bbb6dea16 244 ble_error_t error = params->error;
andresag 7:0a8bbb6dea16 245
andresag 7:0a8bbb6dea16 246 if (error != BLE_ERROR_NONE) {
andresag 7:0a8bbb6dea16 247 /* In case of error, forward the error handling to onBleInitError */
andresag 7:0a8bbb6dea16 248 onBleInitError(ble, error);
andresag 7:0a8bbb6dea16 249 return;
andresag 7:0a8bbb6dea16 250 }
andresag 7:0a8bbb6dea16 251
andresag 7:0a8bbb6dea16 252 /* Ensure that it is the default instance of BLE */
andresag 7:0a8bbb6dea16 253 if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) {
andresag 7:0a8bbb6dea16 254 return;
andresag 7:0a8bbb6dea16 255 }
electronichamsters 8:46c5e0bfab05 256
electronichamsters 8:46c5e0bfab05 257 /* Set device name characteristic data */
electronichamsters 8:46c5e0bfab05 258 ble.gap().setDeviceName((const uint8_t *) DEVICE_NAME);
andresag 7:0a8bbb6dea16 259
rgrover1 5:f4d74a8cad43 260 /* Setup advertising payload */
electronichamsters 8:46c5e0bfab05 261 //set modes "no EDR", "discoverable" for beacon type advertisements
rgrover1 5:f4d74a8cad43 262 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
electronichamsters 8:46c5e0bfab05 263
electronichamsters 11:4f925834167d 264
electronichamsters 8:46c5e0bfab05 265 //from GAP example
electronichamsters 8:46c5e0bfab05 266 /* Sacrifice 2B of 31B to AdvType overhead, rest goes to AdvData array you define */
electronichamsters 8:46c5e0bfab05 267 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, AdvData, sizeof(AdvData));
electronichamsters 8:46c5e0bfab05 268
electronichamsters 8:46c5e0bfab05 269 /* Setup advertising parameters: not connectable */
electronichamsters 8:46c5e0bfab05 270 ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_NON_CONNECTABLE_UNDIRECTED);
electronichamsters 12:9bb01e063498 271 ble.gap().setAdvertisingInterval(900); //one advertisment every 300ms. Self tickers, so you don't have to worry.
electronichamsters 8:46c5e0bfab05 272
electronichamsters 12:9bb01e063498 273 }
electronichamsters 8:46c5e0bfab05 274
electronichamsters 8:46c5e0bfab05 275
electronichamsters 11:4f925834167d 276 //not needed anymore
electronichamsters 8:46c5e0bfab05 277 void my_analogin_init(void)
electronichamsters 8:46c5e0bfab05 278 {
electronichamsters 10:79e8f92ef156 279
electronichamsters 8:46c5e0bfab05 280 NRF_ADC->CONFIG = (ADC_CONFIG_RES_10bit << ADC_CONFIG_RES_Pos) |
electronichamsters 8:46c5e0bfab05 281 (ADC_CONFIG_INPSEL_SupplyOneThirdPrescaling << ADC_CONFIG_INPSEL_Pos) |
electronichamsters 10:79e8f92ef156 282 //(ADC_CONFIG_INPSEL_AnalogInputOneThirdPrescaling << ADC_CONFIG_INPSEL_Pos) |
electronichamsters 8:46c5e0bfab05 283 (ADC_CONFIG_REFSEL_VBG << ADC_CONFIG_REFSEL_Pos) |
electronichamsters 8:46c5e0bfab05 284 (ADC_CONFIG_PSEL_Disabled << ADC_CONFIG_PSEL_Pos) |
electronichamsters 10:79e8f92ef156 285 //(ADC_CONFIG_PSEL_AnalogInput4 << ADC_CONFIG_PSEL_Pos) |
electronichamsters 8:46c5e0bfab05 286 (ADC_CONFIG_EXTREFSEL_None << ADC_CONFIG_EXTREFSEL_Pos);
electronichamsters 10:79e8f92ef156 287 NRF_ADC->ENABLE = ADC_ENABLE_ENABLE_Enabled;
electronichamsters 8:46c5e0bfab05 288 }
sunsmile2015 2:b935358da5ba 289
electronichamsters 12:9bb01e063498 290
electronichamsters 12:9bb01e063498 291 /* ****************************************
electronichamsters 12:9bb01e063498 292 * Read battery voltage using bandgap reference
electronichamsters 12:9bb01e063498 293 * shunt Vdd to ADC, thanks to Marcelo Salazar's notes here:
electronichamsters 12:9bb01e063498 294 * https://developer.mbed.org/users/MarceloSalazar/notebook/measuring-battery-voltage-with-nordic-nrf51x/
electronichamsters 12:9bb01e063498 295 *******************************************/
electronichamsters 12:9bb01e063498 296 uint16_t read_bat_volt(void)
electronichamsters 8:46c5e0bfab05 297 {
electronichamsters 10:79e8f92ef156 298 //10 bit resolution, route Vdd as analog input, set ADC ref to VBG band gap
electronichamsters 10:79e8f92ef156 299 //disable analog pin select "PSEL" because we're using Vdd as analog input
electronichamsters 10:79e8f92ef156 300 //no external voltage reference
electronichamsters 10:79e8f92ef156 301 NRF_ADC->CONFIG = (ADC_CONFIG_RES_10bit << ADC_CONFIG_RES_Pos) |
electronichamsters 10:79e8f92ef156 302 (ADC_CONFIG_INPSEL_SupplyOneThirdPrescaling << ADC_CONFIG_INPSEL_Pos) |
electronichamsters 10:79e8f92ef156 303 //(ADC_CONFIG_INPSEL_AnalogInputOneThirdPrescaling << ADC_CONFIG_INPSEL_Pos) |
electronichamsters 10:79e8f92ef156 304 (ADC_CONFIG_REFSEL_VBG << ADC_CONFIG_REFSEL_Pos) |
electronichamsters 10:79e8f92ef156 305 (ADC_CONFIG_PSEL_Disabled << ADC_CONFIG_PSEL_Pos) |
electronichamsters 10:79e8f92ef156 306 //(ADC_CONFIG_PSEL_AnalogInput4 << ADC_CONFIG_PSEL_Pos) |
electronichamsters 10:79e8f92ef156 307 (ADC_CONFIG_EXTREFSEL_None << ADC_CONFIG_EXTREFSEL_Pos);
electronichamsters 10:79e8f92ef156 308
electronichamsters 10:79e8f92ef156 309 //NRF_ADC->CONFIG &= ~ADC_CONFIG_PSEL_Msk;
electronichamsters 10:79e8f92ef156 310 //NRF_ADC->CONFIG |= ADC_CONFIG_PSEL_Disabled << ADC_CONFIG_PSEL_Pos;
electronichamsters 10:79e8f92ef156 311 NRF_ADC->ENABLE = ADC_ENABLE_ENABLE_Enabled;
electronichamsters 10:79e8f92ef156 312 NRF_ADC->TASKS_START = 1;
electronichamsters 10:79e8f92ef156 313
electronichamsters 10:79e8f92ef156 314
electronichamsters 10:79e8f92ef156 315 //while loop doesn't actually loop until reading comlete, use a wait.
electronichamsters 10:79e8f92ef156 316 while (((NRF_ADC->BUSY & ADC_BUSY_BUSY_Msk) >> ADC_BUSY_BUSY_Pos) == ADC_BUSY_BUSY_Busy) {};
electronichamsters 12:9bb01e063498 317 wait_ms(1);
electronichamsters 10:79e8f92ef156 318
electronichamsters 10:79e8f92ef156 319 //save off RESULT before disabling.
electronichamsters 10:79e8f92ef156 320 //uint16_t myresult = (uint16_t)NRF_ADC->RESULT;
electronichamsters 10:79e8f92ef156 321
electronichamsters 10:79e8f92ef156 322 //disable ADC to lower bat consumption
electronichamsters 10:79e8f92ef156 323 NRF_ADC->TASKS_STOP = 1;
electronichamsters 10:79e8f92ef156 324 //NRF_ADC->ENABLE = ADC_ENABLE_ENABLE_Disabled; //disable to shutdown ADC & lower bat consumption
electronichamsters 10:79e8f92ef156 325
electronichamsters 10:79e8f92ef156 326 return (uint16_t)NRF_ADC->RESULT; // 10 bit
electronichamsters 10:79e8f92ef156 327 //return myresult;
electronichamsters 12:9bb01e063498 328 } //end read_bat_volt
electronichamsters 12:9bb01e063498 329
electronichamsters 12:9bb01e063498 330
electronichamsters 10:79e8f92ef156 331
electronichamsters 12:9bb01e063498 332 /* ****************************************
electronichamsters 12:9bb01e063498 333 * Read battery voltage using bandgap reference
electronichamsters 12:9bb01e063498 334 * shunt analog pin to ADC, from API here
electronichamsters 12:9bb01e063498 335 * https://developer.mbed.org/users/mbed_official/code/mbed-src/file/cb4253f91ada/targets/hal/TARGET_NORDIC/TARGET_NRF51822/analogin_api.c
electronichamsters 12:9bb01e063498 336 *******************************************/
electronichamsters 12:9bb01e063498 337 uint16_t read_ADC_pin(void)
electronichamsters 10:79e8f92ef156 338 {
electronichamsters 10:79e8f92ef156 339
electronichamsters 10:79e8f92ef156 340 //10 bit resolution, route PSEL pin as 1/3 input sel,
electronichamsters 10:79e8f92ef156 341 //set ADC ref to VBG band gap
electronichamsters 10:79e8f92ef156 342 //set AnalogInput4 as input pin (this is P0.03)
electronichamsters 10:79e8f92ef156 343 //no external voltage reference
electronichamsters 10:79e8f92ef156 344 NRF_ADC->CONFIG = (ADC_CONFIG_RES_10bit << ADC_CONFIG_RES_Pos) |
electronichamsters 10:79e8f92ef156 345 //(ADC_CONFIG_INPSEL_SupplyOneThirdPrescaling << ADC_CONFIG_INPSEL_Pos) |
electronichamsters 10:79e8f92ef156 346 (ADC_CONFIG_INPSEL_AnalogInputOneThirdPrescaling << ADC_CONFIG_INPSEL_Pos) |
electronichamsters 10:79e8f92ef156 347 (ADC_CONFIG_REFSEL_VBG << ADC_CONFIG_REFSEL_Pos) |
electronichamsters 10:79e8f92ef156 348 //ADC_CONFIG_PSEL_Disabled << ADC_CONFIG_PSEL_Pos) |
electronichamsters 10:79e8f92ef156 349 (ADC_CONFIG_PSEL_AnalogInput4 << ADC_CONFIG_PSEL_Pos) |
electronichamsters 10:79e8f92ef156 350 (ADC_CONFIG_EXTREFSEL_None << ADC_CONFIG_EXTREFSEL_Pos);
electronichamsters 10:79e8f92ef156 351 //set pin select to AnalogInput4 = pin 7 = p0.03 = AIN4
electronichamsters 10:79e8f92ef156 352 //NRF_ADC->CONFIG &= ~ADC_CONFIG_PSEL_Msk;
electronichamsters 10:79e8f92ef156 353 //NRF_ADC->CONFIG |= ADC_CONFIG_PSEL_AnalogInput4 << ADC_CONFIG_PSEL_Pos;
electronichamsters 10:79e8f92ef156 354 NRF_ADC->ENABLE = ADC_ENABLE_ENABLE_Enabled;
electronichamsters 8:46c5e0bfab05 355 NRF_ADC->TASKS_START = 1;
electronichamsters 8:46c5e0bfab05 356
electronichamsters 8:46c5e0bfab05 357
electronichamsters 8:46c5e0bfab05 358 //while loop doesn't actually loop until reading comlete, use a wait.
electronichamsters 8:46c5e0bfab05 359 while (((NRF_ADC->BUSY & ADC_BUSY_BUSY_Msk) >> ADC_BUSY_BUSY_Pos) == ADC_BUSY_BUSY_Busy) {};
electronichamsters 12:9bb01e063498 360 wait_ms(1); //needed because busy while loop doesn't run.
electronichamsters 8:46c5e0bfab05 361
electronichamsters 8:46c5e0bfab05 362 //save off RESULT before disabling.
electronichamsters 8:46c5e0bfab05 363 //uint16_t myresult = (uint16_t)NRF_ADC->RESULT;
electronichamsters 8:46c5e0bfab05 364
electronichamsters 8:46c5e0bfab05 365 //disable ADC to lower bat consumption
electronichamsters 8:46c5e0bfab05 366 //NRF_ADC->TASKS_STOP = 1;
electronichamsters 8:46c5e0bfab05 367 //NRF_ADC->ENABLE = ADC_ENABLE_ENABLE_Disabled; //disable to shutdown ADC & lower bat consumption
electronichamsters 8:46c5e0bfab05 368
electronichamsters 8:46c5e0bfab05 369 return (uint16_t)NRF_ADC->RESULT; // 10 bit
electronichamsters 8:46c5e0bfab05 370 //return myresult;
electronichamsters 12:9bb01e063498 371 } //end read_ADC_pin
sunsmile2015 4:e5fa4c8838db 372
electronichamsters 10:79e8f92ef156 373
electronichamsters 12:9bb01e063498 374 /* ****************************************
electronichamsters 12:9bb01e063498 375 * Pattern scheme indicating "one of ours"
electronichamsters 12:9bb01e063498 376 * generate first part of ADV data so that observer can recognize it as "one of ours".
electronichamsters 12:9bb01e063498 377 * use specific schema to decide how we're recognizing our sensor ADV
electronichamsters 12:9bb01e063498 378 *******************************************/
electronichamsters 10:79e8f92ef156 379 void hash_first_section(uint8_t * dest, const uint8_t * mac_addr, const char * bat_volt_str)
electronichamsters 10:79e8f92ef156 380 {
electronichamsters 10:79e8f92ef156 381 dest[0] = mac_addr[3];
electronichamsters 10:79e8f92ef156 382 dest[1] = mac_addr[2];
electronichamsters 10:79e8f92ef156 383 dest[2] = mac_addr[1];
electronichamsters 10:79e8f92ef156 384 dest[3] = mac_addr[0];
electronichamsters 10:79e8f92ef156 385 dest[4] = bat_volt_str[0];
electronichamsters 10:79e8f92ef156 386 dest[5] = bat_volt_str[1];
electronichamsters 10:79e8f92ef156 387 dest[6] = bat_volt_str[2];
electronichamsters 10:79e8f92ef156 388 dest[7] = bat_volt_str[3];
electronichamsters 10:79e8f92ef156 389 dest[8] = 0x10;
electronichamsters 10:79e8f92ef156 390 dest[9] = 0x11;
electronichamsters 12:9bb01e063498 391 #if MyDebugEnb
electronichamsters 12:9bb01e063498 392
electronichamsters 12:9bb01e063498 393 device.printf("hash array: ");
electronichamsters 12:9bb01e063498 394 for (int i=0; i<10; i++)
electronichamsters 12:9bb01e063498 395 {
electronichamsters 12:9bb01e063498 396 device.printf("%x ", dest[i]);
electronichamsters 12:9bb01e063498 397 }
electronichamsters 12:9bb01e063498 398 device.printf("\r\n");
electronichamsters 12:9bb01e063498 399 #endif
electronichamsters 10:79e8f92ef156 400 }
electronichamsters 10:79e8f92ef156 401
electronichamsters 10:79e8f92ef156 402
electronichamsters 12:9bb01e063498 403 /* ****************************************
electronichamsters 12:9bb01e063498 404 *
electronichamsters 12:9bb01e063498 405 * Main Loop
electronichamsters 12:9bb01e063498 406 *
electronichamsters 12:9bb01e063498 407 *******************************************/
sunsmile2015 2:b935358da5ba 408 int main(void)
sunsmile2015 2:b935358da5ba 409 {
electronichamsters 8:46c5e0bfab05 410
electronichamsters 12:9bb01e063498 411 #if MyDebugEnb
electronichamsters 12:9bb01e063498 412 device.baud(9600);
electronichamsters 12:9bb01e063498 413 device.printf("started sensor node 36 ");
electronichamsters 12:9bb01e063498 414 device.printf("\r\n");
electronichamsters 12:9bb01e063498 415 #endif
electronichamsters 8:46c5e0bfab05 416
electronichamsters 8:46c5e0bfab05 417
electronichamsters 12:9bb01e063498 418 Tmr_From_Birthday.start(); //tracks # sec since birthday
electronichamsters 8:46c5e0bfab05 419
sunsmile2015 0:3dc6e424dba0 420
andresag 7:0a8bbb6dea16 421 BLE &ble = BLE::Instance();
andresag 7:0a8bbb6dea16 422 ble.init(bleInitComplete);
electronichamsters 8:46c5e0bfab05 423
electronichamsters 8:46c5e0bfab05 424 float bat_reading; //hold battery voltage reading (Vbg/Vcc)
electronichamsters 8:46c5e0bfab05 425
electronichamsters 8:46c5e0bfab05 426 my_analogin_init();//routes band-gap to analog input
andresag 7:0a8bbb6dea16 427
andresag 7:0a8bbb6dea16 428 /* SpinWait for initialization to complete. This is necessary because the
andresag 7:0a8bbb6dea16 429 * BLE object is used in the main loop below. */
electronichamsters 8:46c5e0bfab05 430 while (ble.hasInitialized() == false) { /* spin loop */ }
electronichamsters 8:46c5e0bfab05 431
electronichamsters 8:46c5e0bfab05 432 //every X seconds, sends period update, up to 1800 (30 minutes)
electronichamsters 12:9bb01e063498 433 Tic_Periodic.attach(periodic_Callback, Periodic_Update_Seconds); //send updated I/O every x seconds
electronichamsters 12:9bb01e063498 434 Tic_Birthday.attach(clock_reset_Callback, Periodicity); //clock algorithm periodicity
rgrover1 5:f4d74a8cad43 435
electronichamsters 10:79e8f92ef156 436
electronichamsters 12:9bb01e063498 437 ble.getAddress(0,mac_reverse); //last byte of MAC (as shown on phone app) is at mac[0], not mac[6];
electronichamsters 12:9bb01e063498 438 #if MyDebugEnb
electronichamsters 12:9bb01e063498 439 device.printf("mac = ");
electronichamsters 12:9bb01e063498 440 for (int i=0; i<6; i++) //prints out MAC address in reverse order; opps.
electronichamsters 12:9bb01e063498 441 {
electronichamsters 12:9bb01e063498 442 device.printf("%x:", mac_reverse[i]);
electronichamsters 12:9bb01e063498 443 }
electronichamsters 12:9bb01e063498 444 device.printf("\r\n");
electronichamsters 12:9bb01e063498 445 #endif
electronichamsters 12:9bb01e063498 446 while (true)
electronichamsters 12:9bb01e063498 447 { //Main Loop
electronichamsters 12:9bb01e063498 448
electronichamsters 12:9bb01e063498 449 uint16_t seconds_Old =(uint16_t)(Tmr_From_Birthday.read_ms()/1000); // 0-1800 seconds (30 minutes)
electronichamsters 12:9bb01e063498 450
electronichamsters 12:9bb01e063498 451 #if MyDebugEnb
electronichamsters 12:9bb01e063498 452 device.printf("current time in seconds: %d \r\n", seconds_Old);
electronichamsters 12:9bb01e063498 453 #endif
electronichamsters 12:9bb01e063498 454
electronichamsters 8:46c5e0bfab05 455 //set both pins to pull-up, so they're not floating when we read state
electronichamsters 8:46c5e0bfab05 456 button1.mode(PullUp);
electronichamsters 8:46c5e0bfab05 457 button2.mode(PullUp);
electronichamsters 8:46c5e0bfab05 458
electronichamsters 8:46c5e0bfab05 459 //expect either button1 or button2 is grounded, b/c using SPDT reed switch
electronichamsters 8:46c5e0bfab05 460 //the "common" pin on the reed switch should be on GND
electronichamsters 8:46c5e0bfab05 461 uint8_t button1_state = button1.read();
electronichamsters 8:46c5e0bfab05 462 uint8_t button2_state = button2.read();
electronichamsters 8:46c5e0bfab05 463
electronichamsters 8:46c5e0bfab05 464
electronichamsters 8:46c5e0bfab05 465 //let's just update the pins on every wake. Insurance against const drain.
electronichamsters 12:9bb01e063498 466 //if state == 0, pin is grounded. Unset interrupt and float pin, set the other pin for ISR
electronichamsters 8:46c5e0bfab05 467 if ( (button1_state == 0) && (button2_state == 1) )
electronichamsters 8:46c5e0bfab05 468 {
electronichamsters 8:46c5e0bfab05 469 magnet_near = 1;
electronichamsters 8:46c5e0bfab05 470 //button1.disable_irq() //don't know if disables IRQ on port or pin
electronichamsters 8:46c5e0bfab05 471 button1.fall(NULL); //disable interrupt
electronichamsters 8:46c5e0bfab05 472 button1.rise(NULL); //disable interrupt
electronichamsters 8:46c5e0bfab05 473 button1.mode(PullNone); //float pin to save battery
electronichamsters 8:46c5e0bfab05 474
electronichamsters 8:46c5e0bfab05 475 //button2.disable_irq() //don't know if disables IRQ on port or pin
electronichamsters 10:79e8f92ef156 476 button2.fall(buttonReleasedCallback); //enable interrupt
electronichamsters 10:79e8f92ef156 477 button2.rise(buttonReleasedCallback); //enable interrupt
electronichamsters 10:79e8f92ef156 478 button2.mode(PullUp); //pull up on pin to get interrupt
electronichamsters 12:9bb01e063498 479 #if MyDebugEnb
electronichamsters 12:9bb01e063498 480 device.printf("=== button 1! %d seconds=== \r\n", seconds_Old);
electronichamsters 12:9bb01e063498 481 #endif
electronichamsters 12:9bb01e063498 482 } //end if button2
electronichamsters 8:46c5e0bfab05 483 else if ( (button1_state == 1) && (button2_state == 0) ) //assume other pin is open circuit
electronichamsters 8:46c5e0bfab05 484 {
electronichamsters 8:46c5e0bfab05 485 magnet_near = 0;
electronichamsters 8:46c5e0bfab05 486 //button1.disable_irq() //don't know if disables IRQ on port or pin
electronichamsters 10:79e8f92ef156 487 button1.fall(buttonReleasedCallback); //enable interrupt
electronichamsters 10:79e8f92ef156 488 button1.rise(buttonReleasedCallback); //enable interrupt
electronichamsters 10:79e8f92ef156 489 button1.mode(PullUp); //pull up on pin to get interrupt
electronichamsters 8:46c5e0bfab05 490
electronichamsters 8:46c5e0bfab05 491 //button2.disable_irq() //don't know if disables IRQ on port or pin
electronichamsters 8:46c5e0bfab05 492 button2.fall(NULL); //disable interrupt
electronichamsters 8:46c5e0bfab05 493 button2.rise(NULL); //disable interrupt
electronichamsters 8:46c5e0bfab05 494 button2.mode(PullNone); //float pin to save battery
electronichamsters 12:9bb01e063498 495 #if MyDebugEnb
electronichamsters 12:9bb01e063498 496 device.printf("=== button 2! === %d seconds\r\n", seconds_Old);
electronichamsters 12:9bb01e063498 497 #endif
electronichamsters 12:9bb01e063498 498 } //end if button1
electronichamsters 8:46c5e0bfab05 499 else //odd state, shouldn't happen, suck battery and pullup both pins
electronichamsters 8:46c5e0bfab05 500 {
electronichamsters 8:46c5e0bfab05 501 magnet_near = 2;
electronichamsters 8:46c5e0bfab05 502 //AdvData[4] = 0x33;
electronichamsters 8:46c5e0bfab05 503 //button1.disable_irq() //don't know if disables IRQ on port or pin
electronichamsters 8:46c5e0bfab05 504 button1.fall(buttonReleasedCallback); //disable interrupt
electronichamsters 8:46c5e0bfab05 505 button1.rise(buttonReleasedCallback); //disable interrupt
electronichamsters 8:46c5e0bfab05 506 button1.mode(PullUp); //float pin to save battery
electronichamsters 8:46c5e0bfab05 507
electronichamsters 8:46c5e0bfab05 508 //button2.disable_irq() //don't know if disables IRQ on port or pin
electronichamsters 8:46c5e0bfab05 509 button2.fall(buttonReleasedCallback); //disable interrupt
electronichamsters 8:46c5e0bfab05 510 button2.rise(buttonReleasedCallback); //disable interrupt
electronichamsters 8:46c5e0bfab05 511 button2.mode(PullUp); //float pin to save battery
electronichamsters 12:9bb01e063498 512 #if MyDebugEnb
electronichamsters 12:9bb01e063498 513 device.printf("no buttons!! %d seconds\r\n", seconds_Old);
electronichamsters 12:9bb01e063498 514 #endif
electronichamsters 12:9bb01e063498 515 } //end odd state
electronichamsters 8:46c5e0bfab05 516
electronichamsters 8:46c5e0bfab05 517
electronichamsters 12:9bb01e063498 518 if (Flag_Update_IO) {
andresag 7:0a8bbb6dea16 519 /* Do blocking calls or whatever hardware-specific action is
andresag 7:0a8bbb6dea16 520 * necessary to poll the sensor. */
electronichamsters 8:46c5e0bfab05 521
electronichamsters 12:9bb01e063498 522 //call attach again on periodic update to reset ticker
electronichamsters 12:9bb01e063498 523 //next periodic updates happens Perioidc_Update_Seconds after I/O events
electronichamsters 12:9bb01e063498 524 Tic_Periodic.attach(periodic_Callback, Periodic_Update_Seconds);
electronichamsters 10:79e8f92ef156 525 Xmit_Cnt++; //increment transmit counter when updating I/O
electronichamsters 10:79e8f92ef156 526
electronichamsters 10:79e8f92ef156 527
electronichamsters 12:9bb01e063498 528 //read and convert battery voltage
electronichamsters 12:9bb01e063498 529 bat_reading = (float)read_bat_volt();
electronichamsters 8:46c5e0bfab05 530 bat_reading = (bat_reading * 3.6) / 1024.0;
electronichamsters 12:9bb01e063498 531 #if MyDebugEnb
electronichamsters 8:46c5e0bfab05 532 device.printf("bat reading: %f \r\n", bat_reading);
electronichamsters 12:9bb01e063498 533 #endif
electronichamsters 12:9bb01e063498 534 //write battery voltage
electronichamsters 12:9bb01e063498 535 uint8_t total_chars;
electronichamsters 12:9bb01e063498 536 memset(&bat_volt_char[0], 0, sizeof(bat_volt_char)); //clear out buffer
electronichamsters 12:9bb01e063498 537 //convert battery voltage float value to string reprsentation to 2 decimal places, and save the size of string.
electronichamsters 12:9bb01e063498 538 total_chars = sprintf (bat_volt_char, "%.2f", bat_reading);
electronichamsters 8:46c5e0bfab05 539
electronichamsters 12:9bb01e063498 540
electronichamsters 12:9bb01e063498 541 //read and convert analog voltage. Comment out this section if note needed, saves some battery
electronichamsters 10:79e8f92ef156 542 NRF_ADC->TASKS_STOP = 1;
electronichamsters 10:79e8f92ef156 543 float analogreading;
electronichamsters 12:9bb01e063498 544 analogreading = (float)read_ADC_pin();
electronichamsters 10:79e8f92ef156 545 analogreading = (analogreading * 3.6) / 1024.0;
electronichamsters 10:79e8f92ef156 546 #if MyDebugEnb
electronichamsters 10:79e8f92ef156 547 device.printf("separate analog reading: %.02f \r\n", analogreading);
electronichamsters 10:79e8f92ef156 548 #endif
electronichamsters 10:79e8f92ef156 549
electronichamsters 12:9bb01e063498 550 //disable ADC to save power
electronichamsters 8:46c5e0bfab05 551 NRF_ADC->TASKS_STOP = 1;
electronichamsters 8:46c5e0bfab05 552 NRF_ADC->ENABLE = ADC_ENABLE_ENABLE_Disabled; //disable to shutdown ADC & lower bat consumption
electronichamsters 8:46c5e0bfab05 553
electronichamsters 10:79e8f92ef156 554
electronichamsters 12:9bb01e063498 555 #if MyDebugEnb
electronichamsters 12:9bb01e063498 556 device.printf("char buff: %c%c%c%c \r\n", bat_volt_char[0], bat_volt_char[1], bat_volt_char[2], bat_volt_char[3]);
electronichamsters 12:9bb01e063498 557 device.printf("num chars: %d \r\n", total_chars);
electronichamsters 12:9bb01e063498 558 #endif
electronichamsters 8:46c5e0bfab05 559
electronichamsters 8:46c5e0bfab05 560
electronichamsters 12:9bb01e063498 561 //Generate "First Section" for ADV_Data so gateway will recognize our advertisement pattern
electronichamsters 12:9bb01e063498 562 hash_first_section(Adv_First_Section, mac_reverse, bat_volt_char);
electronichamsters 8:46c5e0bfab05 563
electronichamsters 10:79e8f92ef156 564
electronichamsters 12:9bb01e063498 565 /* ****************************************
electronichamsters 12:9bb01e063498 566 * start writing out ADVData array
electronichamsters 12:9bb01e063498 567 * todo: this is easy to write but hard to read. Maybe make it easy to read and hard to write?
electronichamsters 12:9bb01e063498 568 ******************************************/
electronichamsters 10:79e8f92ef156 569 memset(&AdvData[0], 0, sizeof(AdvData));
electronichamsters 10:79e8f92ef156 570 uint8_t JSON_loc=0; //AdvData[0]
electronichamsters 10:79e8f92ef156 571
electronichamsters 12:9bb01e063498 572 AdvData[0] = Adv_First_Section[0]; //"our device" flag, MAC[3]
electronichamsters 12:9bb01e063498 573 JSON_loc++; //JSON_loc == 1
electronichamsters 12:9bb01e063498 574 AdvData[1] = Adv_First_Section[1]; //"out device" flag, MAC[2]...
electronichamsters 12:9bb01e063498 575 JSON_loc++; //JSON_loc == 2
electronichamsters 12:9bb01e063498 576 AdvData[2] = Adv_First_Section[2];
electronichamsters 12:9bb01e063498 577 JSON_loc++; //JSON_loc == 3
electronichamsters 12:9bb01e063498 578 AdvData[3] = Adv_First_Section[3];
electronichamsters 12:9bb01e063498 579 JSON_loc++; //JSON_loc == 4
electronichamsters 12:9bb01e063498 580 AdvData[4] = Adv_First_Section[4];
electronichamsters 12:9bb01e063498 581 JSON_loc++; //JSON_loc == 5
electronichamsters 12:9bb01e063498 582 AdvData[5] = Adv_First_Section[5];
electronichamsters 12:9bb01e063498 583 JSON_loc++; //JSON_loc == 6
electronichamsters 12:9bb01e063498 584 AdvData[6] = Adv_First_Section[6];
electronichamsters 10:79e8f92ef156 585 JSON_loc++;
electronichamsters 12:9bb01e063498 586 AdvData[7] = Adv_First_Section[7];
electronichamsters 10:79e8f92ef156 587 JSON_loc++;
electronichamsters 12:9bb01e063498 588 AdvData[8] = Adv_First_Section[8];
electronichamsters 10:79e8f92ef156 589 JSON_loc++;
electronichamsters 12:9bb01e063498 590 AdvData[9] = Adv_First_Section[9];
electronichamsters 8:46c5e0bfab05 591 JSON_loc++;
electronichamsters 10:79e8f92ef156 592
electronichamsters 12:9bb01e063498 593 #if MyDebugEnb
electronichamsters 12:9bb01e063498 594 device.printf("ADV first 10 array: ");
electronichamsters 12:9bb01e063498 595 for (int i=0; i<10; i++)
electronichamsters 12:9bb01e063498 596 {
electronichamsters 12:9bb01e063498 597 device.printf("%x ", AdvData[i]);
electronichamsters 12:9bb01e063498 598 }
electronichamsters 12:9bb01e063498 599 device.printf("\r\n");
electronichamsters 12:9bb01e063498 600 #endif
electronichamsters 10:79e8f92ef156 601
electronichamsters 10:79e8f92ef156 602
electronichamsters 10:79e8f92ef156 603 JSON_loc = 10;
electronichamsters 12:9bb01e063498 604 //Start of encrypted user data
electronichamsters 12:9bb01e063498 605
electronichamsters 12:9bb01e063498 606 //[10] and [11] hold 2 bytes for how many seconds since birthday, little endian
electronichamsters 12:9bb01e063498 607 AdvData[10] = seconds_Old & 0xFF;
electronichamsters 8:46c5e0bfab05 608 JSON_loc++;
electronichamsters 12:9bb01e063498 609 AdvData[11] = (seconds_Old >> 8) & 0xFF;
electronichamsters 10:79e8f92ef156 610 JSON_loc++;
electronichamsters 12:9bb01e063498 611
electronichamsters 10:79e8f92ef156 612 AdvData[12] = Xmit_Cnt;
electronichamsters 8:46c5e0bfab05 613 JSON_loc++;
electronichamsters 12:9bb01e063498 614
electronichamsters 10:79e8f92ef156 615 //start of jason data
electronichamsters 12:9bb01e063498 616 //"mag":
electronichamsters 10:79e8f92ef156 617 JSON_loc = 13;
electronichamsters 12:9bb01e063498 618 AdvData[JSON_loc] = 0x22; //ADV_Data[13] = "
electronichamsters 10:79e8f92ef156 619 JSON_loc++; //14
electronichamsters 8:46c5e0bfab05 620
electronichamsters 12:9bb01e063498 621 AdvData[JSON_loc] = 0x6d; //ADV_Data[14] = m
electronichamsters 10:79e8f92ef156 622 JSON_loc++; //15
electronichamsters 10:79e8f92ef156 623
electronichamsters 12:9bb01e063498 624 AdvData[JSON_loc] = 0x61; //ADV_Data[15] = a
electronichamsters 10:79e8f92ef156 625 JSON_loc++; //16
electronichamsters 10:79e8f92ef156 626
electronichamsters 12:9bb01e063498 627 AdvData[JSON_loc] = 0x67; //ADV_Data[16] = g
electronichamsters 10:79e8f92ef156 628 JSON_loc++; //17
electronichamsters 8:46c5e0bfab05 629
electronichamsters 12:9bb01e063498 630 //for periodic calls, we want to add an extra mqtt level "p", using "/p"
electronichamsters 12:9bb01e063498 631 //to delineate between MQTT publishes from real world I/O interrupts vs timer interrupts
electronichamsters 12:9bb01e063498 632 if (Flag_Periodic_Call)
electronichamsters 8:46c5e0bfab05 633 {
electronichamsters 12:9bb01e063498 634 AdvData[JSON_loc] = 0x2f; // ADV_Data[17] = /
electronichamsters 12:9bb01e063498 635 JSON_loc++; //18
electronichamsters 12:9bb01e063498 636 AdvData[JSON_loc] = 0x70; // ADV_Data[18] =p
electronichamsters 12:9bb01e063498 637 JSON_loc++; //19
electronichamsters 12:9bb01e063498 638 }
electronichamsters 8:46c5e0bfab05 639
electronichamsters 12:9bb01e063498 640 AdvData[JSON_loc] = 0x22; //ADV_Data[17 or 19] = "
electronichamsters 10:79e8f92ef156 641 JSON_loc++; //20
electronichamsters 8:46c5e0bfab05 642
electronichamsters 12:9bb01e063498 643 AdvData[JSON_loc] = 0x3a; //ADV_Data[18 or 20] = :
electronichamsters 12:9bb01e063498 644 JSON_loc++; //21
electronichamsters 8:46c5e0bfab05 645
electronichamsters 12:9bb01e063498 646 //convert magnet variable to string, for magnet sensor, this is easy
electronichamsters 12:9bb01e063498 647 //since we only have 1 or 0, but this also works for analog values
electronichamsters 8:46c5e0bfab05 648 memset(&buffer[0], 0, sizeof(buffer)); //clear out buffer
electronichamsters 10:79e8f92ef156 649 total_chars = sprintf (buffer, "%d", magnet_near); //returns total number of characters, which is 1 character.
electronichamsters 8:46c5e0bfab05 650 for (int i=0; i < total_chars; i++)
electronichamsters 8:46c5e0bfab05 651 {
electronichamsters 8:46c5e0bfab05 652 AdvData[JSON_loc] = buffer[i];
electronichamsters 10:79e8f92ef156 653 JSON_loc++; //23
electronichamsters 8:46c5e0bfab05 654 } //JSON_loc left at location of next character
electronichamsters 8:46c5e0bfab05 655
electronichamsters 12:9bb01e063498 656
electronichamsters 12:9bb01e063498 657 //AdvData[JSON_loc] = 0x0; //since AdvData was cleared to start with, we don't need to null term
electronichamsters 8:46c5e0bfab05 658
rgrover1 5:f4d74a8cad43 659 ApplicationData_t appData;
rgrover1 5:f4d74a8cad43 660 setupApplicationData(appData);
electronichamsters 8:46c5e0bfab05 661
electronichamsters 12:9bb01e063498 662 /*********************
electronichamsters 12:9bb01e063498 663 * start encrypting last 16 bytes of ADV_Data
electronichamsters 12:9bb01e063498 664 *********************/
electronichamsters 8:46c5e0bfab05 665 for (int i=0; i<16; i++)
electronichamsters 8:46c5e0bfab05 666 {
electronichamsters 10:79e8f92ef156 667 src_buf[i] = AdvData[i+10]; //start of encrypted section is at AdvData[10]
electronichamsters 8:46c5e0bfab05 668 }
electronichamsters 8:46c5e0bfab05 669 nrf_ecb_init();
electronichamsters 8:46c5e0bfab05 670 nrf_ecb_set_key(key_buf);
electronichamsters 8:46c5e0bfab05 671 bool successful_ecb = nrf_ecb_crypt(des_buf, src_buf);
electronichamsters 12:9bb01e063498 672 #if MyDebugEnb
electronichamsters 12:9bb01e063498 673 device.printf("success ecb = %d \r\n", successful_ecb);
electronichamsters 12:9bb01e063498 674 device.printf("src_buf: %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x \r\n", src_buf[0], src_buf[1], src_buf[2], src_buf[3], src_buf[4], src_buf[5], src_buf[6], src_buf[7], src_buf[8], src_buf[9], src_buf[10], src_buf[11], src_buf[12], src_buf[13], src_buf[14], src_buf[15]);
electronichamsters 12:9bb01e063498 675 device.printf("des_buf: %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x \r\n", des_buf[0], des_buf[1], des_buf[2], des_buf[3], des_buf[4], des_buf[5], des_buf[6], des_buf[7], des_buf[8], des_buf[9], des_buf[10], des_buf[11], des_buf[12], des_buf[13], des_buf[14], des_buf[15]);
electronichamsters 12:9bb01e063498 676 #endif
electronichamsters 12:9bb01e063498 677 for (int i=0; i<16; i++) //replace last 16 bytes with encrypted 16 bytes
electronichamsters 8:46c5e0bfab05 678 {
electronichamsters 10:79e8f92ef156 679 AdvData[i+10] = des_buf[i];
electronichamsters 8:46c5e0bfab05 680 }
electronichamsters 8:46c5e0bfab05 681
electronichamsters 12:9bb01e063498 682 //set payload for advertisement to our custom manufactured data. First 5 bytes is BLE standard, last 26 bytes is our array
electronichamsters 8:46c5e0bfab05 683 //ble.gap().updateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, (uint8_t *) &appData, sizeof(ApplicationData_t));
electronichamsters 8:46c5e0bfab05 684 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, AdvData, sizeof(AdvData));
electronichamsters 8:46c5e0bfab05 685
electronichamsters 12:9bb01e063498 686 Flag_Update_IO = false;
electronichamsters 12:9bb01e063498 687 Flag_Periodic_Call = false;
electronichamsters 8:46c5e0bfab05 688
electronichamsters 8:46c5e0bfab05 689 ble.gap().startAdvertising();
electronichamsters 12:9bb01e063498 690 Tic_Stop_Adv.attach(stop_adv_Callback, 3); /* trigger turn off advertisement after X seconds */
electronichamsters 8:46c5e0bfab05 691
electronichamsters 12:9bb01e063498 692 }//end Flag_Update_IO
electronichamsters 8:46c5e0bfab05 693
electronichamsters 8:46c5e0bfab05 694
electronichamsters 12:9bb01e063498 695 if (Flag_Detach_Adv_Tic == true) //ticker callback flag to stop advertising
electronichamsters 8:46c5e0bfab05 696 {
electronichamsters 8:46c5e0bfab05 697 ble.gap().stopAdvertising(); //may be safer to execute BLE operations in main
electronichamsters 12:9bb01e063498 698 Tic_Stop_Adv.detach();
electronichamsters 12:9bb01e063498 699 Flag_Detach_Adv_Tic = false;
electronichamsters 8:46c5e0bfab05 700 }
electronichamsters 12:9bb01e063498 701
electronichamsters 8:46c5e0bfab05 702
electronichamsters 12:9bb01e063498 703 ble.waitForEvent(); //sleeps until interrupt form ticker or I/O
electronichamsters 8:46c5e0bfab05 704 }//end forever while
electronichamsters 8:46c5e0bfab05 705 }//end main