Eric Tsai / Mbed 2 deprecated BLE_Sensor_Button

nRF51822 button, those cheap ones from ebay/aliexpress

Dependencies:   BLE_API mbed nRF51822

main.cpp@13:c2ffbb25ed0a, 2017-10-28 (annotated)

Committer:
electronichamsters
Date:
Sat Oct 28 05:13:58 2017 +0000
Revision:
13:c2ffbb25ed0a
Parent:
12:9bb01e063498 
tested, works.

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 13:c2ffbb25ed0a 23 *
electronichamsters 13:c2ffbb25ed0a 24 * /BEA/0 is fast press, /BEA/1 is slow press
electronichamsters 12:9bb01e063498 25 * keywords: todo, tochange
electronichamsters 12:9bb01e063498 26 */
electronichamsters 8:46c5e0bfab05 27
sunsmile2015 0:3dc6e424dba0 28
electronichamsters 8:46c5e0bfab05 29 extern "C"
electronichamsters 8:46c5e0bfab05 30 {
electronichamsters 12:9bb01e063498 31 #include "nrf_ecb.h" //required to call the ecb functions for encryption
electronichamsters 8:46c5e0bfab05 32 }
electronichamsters 8:46c5e0bfab05 33
sunsmile2015 0:3dc6e424dba0 34 #include "mbed.h"
rgrover1 5:f4d74a8cad43 35 #include "toolchain.h"
sunsmile2015 0:3dc6e424dba0 36 #include "ble/BLE.h"
sunsmile2015 0:3dc6e424dba0 37 #include "TMP_nrf51/TMP_nrf51.h"
sunsmile2015 0:3dc6e424dba0 38
electronichamsters 8:46c5e0bfab05 39
electronichamsters 12:9bb01e063498 40 /*******************************************************************************************
electronichamsters 12:9bb01e063498 41 * START tochange: items that may need customization depending on sensors, hardware, and desired behavior
electronichamsters 12:9bb01e063498 42 *******************************************************************************************/
electronichamsters 13:c2ffbb25ed0a 43 const uint16_t Periodic_Update_Seconds = 900; //number of seconds between periodic I/O status re-transmits 900s =15 min.
electronichamsters 12:9bb01e063498 44 #define MyDebugEnb 0 //enables serial output for debug, consumes ~1mA when idle
electronichamsters 13:c2ffbb25ed0a 45 #define EnablePeriodic 0
electronichamsters 12:9bb01e063498 46 uint8_t magnet_near=0; //this I/O, specifically for reed switch sensor
electronichamsters 10:79e8f92ef156 47
electronichamsters 11:4f925834167d 48
electronichamsters 12:9bb01e063498 49 /* hardware interrupt pins, selected based on hardware
electronichamsters 12:9bb01e063498 50 *Syntax: Pin "P0.4" on nRF51822 documentation is mbed "p4".
electronichamsters 12:9bb01e063498 51 * InterruptIn is pulled-up. GND the pin to activate.
electronichamsters 12:9bb01e063498 52 */
electronichamsters 13:c2ffbb25ed0a 53 //InterruptIn button1(p0); //nRF51822 P0.0
electronichamsters 13:c2ffbb25ed0a 54 //InterruptIn button2(p1); //nRF51822 P0.1
electronichamsters 13:c2ffbb25ed0a 55 InterruptIn button1(p28); //nRF51822 P0.28 is beacon button
electronichamsters 13:c2ffbb25ed0a 56 //InterruptIn button1(p24); //nRF51822 P0.24 is purple board
electronichamsters 13:c2ffbb25ed0a 57 //InterruptIn button1(p1);
electronichamsters 13:c2ffbb25ed0a 58
electronichamsters 12:9bb01e063498 59 /******************************************************************************************
electronichamsters 12:9bb01e063498 60 * END tochange
electronichamsters 12:9bb01e063498 61 *******************************************************************************************/
electronichamsters 8:46c5e0bfab05 62
electronichamsters 12:9bb01e063498 63
electronichamsters 8:46c5e0bfab05 64 #if MyDebugEnb
electronichamsters 12:9bb01e063498 65 // if you see ~1mA consumption during sleep, that's because MyDebugEnb==1, it's enabled.
electronichamsters 8:46c5e0bfab05 66 Serial device(p9, p11); //nRF51822 uart : TX=p9. RX=p11
electronichamsters 8:46c5e0bfab05 67 #endif
electronichamsters 8:46c5e0bfab05 68
electronichamsters 12:9bb01e063498 69 static Ticker Tic_Stop_Adv; //used to stop advertising after X seconds
electronichamsters 12:9bb01e063498 70 static Ticker Tic_Debounce; //debounce I/O
electronichamsters 12:9bb01e063498 71 static Ticker Tic_Periodic; //transmit sensor data on a periodic basis outside I/O events
electronichamsters 8:46c5e0bfab05 72
electronichamsters 12:9bb01e063498 73 const uint16_t Periodicity = 1800; //birthday periodicity used for spoof checking, must match gateway. Should be 1800 seconds for 30minutes
electronichamsters 12:9bb01e063498 74 static Timer Tmr_From_Birthday; //holds number of seconds since birthday, for spoof detection
electronichamsters 12:9bb01e063498 75 static Ticker Tic_Birthday; //resets Tmr_From_Birthday every Periodicity seconds, for spoof detection
electronichamsters 12:9bb01e063498 76
electronichamsters 8:46c5e0bfab05 77
electronichamsters 12:9bb01e063498 78 static bool Flag_Update_IO = false; //flag to indicate event is hardware interrupt
electronichamsters 12:9bb01e063498 79 static bool Flag_Periodic_Call = false; //flag to indicate event is periodic callback
electronichamsters 12:9bb01e063498 80 static bool Flag_Detach_Adv_Tic = false; //flag to stop advertising
electronichamsters 12:9bb01e063498 81
electronichamsters 12:9bb01e063498 82 /* Optional: Device Name, add for human read-ability */
electronichamsters 12:9bb01e063498 83 const static char DEVICE_NAME[] = "LOL";
electronichamsters 8:46c5e0bfab05 84
electronichamsters 8:46c5e0bfab05 85
electronichamsters 12:9bb01e063498 86 //Advertisement Data
electronichamsters 12:9bb01e063498 87 //note: AdvData[] holds bytes [5] to byte [30] of entire advertising data. The user content part after ADV flag and header
electronichamsters 12:9bb01e063498 88 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 89 char buffer[10]={0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; //hold I/O reading json
electronichamsters 12:9bb01e063498 90 char bat_volt_char[6] = {0, 0, 0, 0, 0, 0}; //hold json for battery reading
electronichamsters 12:9bb01e063498 91 uint8_t Adv_First_Section[10]; //holds the first several bytes with a pattern indicating this sensor is "one of ours"
electronichamsters 12:9bb01e063498 92 uint8_t mac_reverse[6] = {0x0,0x0,0x0,0x0,0x0,0x0}; //mac address for this module
rgrover1 5:f4d74a8cad43 93
electronichamsters 12:9bb01e063498 94 /***** Advertisement structure is 31 Bytes ****************
electronichamsters 12:9bb01e063498 95
electronichamsters 12:9bb01e063498 96 https://docs.mbed.com/docs/ble-intros/en/latest/Advanced/CustomGAP/
electronichamsters 8:46c5e0bfab05 97
electronichamsters 12:9bb01e063498 98 Full Advertisement:
electronichamsters 12:9bb01e063498 99 First 5 bytes are set by stack according to flag and header parameters.
electronichamsters 12:9bb01e063498 100 Last 26 bytes are user data
electronichamsters 12:9bb01e063498 101 -- tabbed --
electronichamsters 12:9bb01e063498 102 Byte 0 | AD1 Length | 0x02 | AD1 is 2 bytes long
electronichamsters 12:9bb01e063498 103 Byte 1 | AD1 Type | 0x01 | AD1 Data interpreted as flag
electronichamsters 12:9bb01e063498 104 Byte 2 | AD1 Data 0 | 0x06 | AD1 Data flag mean "00000110"
electronichamsters 12:9bb01e063498 105 Byte 3 | AD2 Length | 0x1B | AD2 is 27 bytes (0x1B) long (rest of this data)
electronichamsters 12:9bb01e063498 106 Byte 4 | AD2 Type | 0xFF | 0xFF mean Manufacturer Specific Data
electronichamsters 12:9bb01e063498 107 Byte 5 | AD2 Data 0 | ADV_Data[0] | "our device" flag, MAC[3]
electronichamsters 12:9bb01e063498 108 Byte 6 | AD2 Data 1 | ADV_Data[1] | "out device" flag, MAC[2]
electronichamsters 12:9bb01e063498 109 Byte 7 | AD2 Data 2 | ADV_Data[2] | "out device" flag, MAC[1]
electronichamsters 12:9bb01e063498 110 Byte 8 | AD2 Data 3 | ADV_Data[3] | "out device" flag, MAC[0]
electronichamsters 12:9bb01e063498 111 Byte 9 | AD2 Data 4 | ADV_Data[4] | battery voltage json MSB, ie 3 in 3.14
electronichamsters 12:9bb01e063498 112 Byte 10 | AD2 Data 5 | ADV_Data[5] | battery voltage json
electronichamsters 12:9bb01e063498 113 Byte 11 | AD2 Data 6 | ADV_Data[6] | battery voltage json
electronichamsters 12:9bb01e063498 114 Byte 12 | AD2 Data 7 | ADV_Data[7] | battery voltage json LSB, ie 4 in 3.14
electronichamsters 12:9bb01e063498 115 Byte 13 | AD2 Data 8 | ADV_Data[8] | reserved
electronichamsters 12:9bb01e063498 116 Byte 14 | AD2 Data 9 | ADV_Data[9] | reserved
electronichamsters 12:9bb01e063498 117 Byte 15 | AD2 Data 10 | ADV_Data[10] Encrypted | spoof - clock high byte, range 0 to 1800 seconds
electronichamsters 12:9bb01e063498 118 Byte 16 | AD2 Data 11 | ADV_Data[11] Encrypted | spoof - clock low byte
electronichamsters 12:9bb01e063498 119 Byte 17 | AD2 Data 12 | ADV_Data[12] Encrypted | Xmit_Cnt - increments per transmit event, 0-255
electronichamsters 12:9bb01e063498 120 Byte 18 | AD2 Data 13 | ADV_Data[13] Encrypted | JSON[0]
electronichamsters 12:9bb01e063498 121 Byte 19 | AD2 Data 14 | ADV_Data[14] Encrypted | JSON[1]
electronichamsters 12:9bb01e063498 122 Byte 20 | AD2 Data 15 | ADV_Data[15] Encrypted | JSON[2]
electronichamsters 12:9bb01e063498 123 Byte 21 | AD2 Data 16 | ADV_Data[16] Encrypted | JSON[3]
electronichamsters 12:9bb01e063498 124 Byte 22 | AD2 Data 17 | ADV_Data[17] Encrypted | JSON[4]
electronichamsters 12:9bb01e063498 125 Byte 23 | AD2 Data 18 | ADV_Data[18] Encrypted | JSON[5]
electronichamsters 12:9bb01e063498 126 Byte 24 | AD2 Data 19 | ADV_Data[19] Encrypted | JSON[6]
electronichamsters 12:9bb01e063498 127 Byte 25 | AD2 Data 20 | ADV_Data[20] Encrypted | JSON[7]
electronichamsters 12:9bb01e063498 128 Byte 26 | AD2 Data 21 | ADV_Data[21] Encrypted | JSON[8]
electronichamsters 12:9bb01e063498 129 Byte 27 | AD2 Data 22 | ADV_Data[22] Encrypted | JSON[9]
electronichamsters 12:9bb01e063498 130 Byte 28 | AD2 Data 23 | ADV_Data[23] Encrypted | JSON[10]
electronichamsters 12:9bb01e063498 131 Byte 29 | AD2 Data 24 | ADV_Data[24] Encrypted | JSON[11]
electronichamsters 12:9bb01e063498 132 Byte 30 | AD2 Data 25 | ADV_Data[25] Encrypted | JSON[12]
electronichamsters 8:46c5e0bfab05 133
electronichamsters 12:9bb01e063498 134 ***************************************************/
electronichamsters 8:46c5e0bfab05 135
electronichamsters 8:46c5e0bfab05 136
electronichamsters 8:46c5e0bfab05 137 static uint8_t key[16] = {0x1,0x2,0x3,0x4,0x1,0x2,0x3,0x4,0x1,0x2,0x3,0x4,0x1,0x2,0x3,0x4};
electronichamsters 8:46c5e0bfab05 138 //26 bytes adv data
electronichamsters 8:46c5e0bfab05 139 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 140 //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 141 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 142 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 143 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 144
electronichamsters 10:79e8f92ef156 145 uint8_t Xmit_Cnt = 1;
electronichamsters 8:46c5e0bfab05 146
electronichamsters 8:46c5e0bfab05 147
electronichamsters 8:46c5e0bfab05 148
electronichamsters 8:46c5e0bfab05 149 /* **** NOT USED **** */
electronichamsters 8:46c5e0bfab05 150 //16byte UUID loading happens here
electronichamsters 8:46c5e0bfab05 151 //Look at <GapAdvertisingData.h> for rest of definition
sunsmile2015 4:e5fa4c8838db 152 struct ApplicationData_t {
electronichamsters 8:46c5e0bfab05 153 //Byte 0: AppID High Byte
electronichamsters 8:46c5e0bfab05 154 //Byte 1: AppID Low Byte
electronichamsters 8:46c5e0bfab05 155 //Byte 2: sensor High Word
electronichamsters 8:46c5e0bfab05 156 //Byte 3:
electronichamsters 8:46c5e0bfab05 157 //Byte 4:
electronichamsters 8:46c5e0bfab05 158 //Byte 5: sensor Low Byte
electronichamsters 8:46c5e0bfab05 159
electronichamsters 8:46c5e0bfab05 160
electronichamsters 8:46c5e0bfab05 161 //app ID is 16 bit, (0xFEFE)
electronichamsters 8:46c5e0bfab05 162 uint16_t applicationSpecificId; /* An ID used to identify temperature value in the manufacture specific AD data field */
electronichamsters 8:46c5e0bfab05 163
electronichamsters 8:46c5e0bfab05 164 TMP_nrf51::TempSensorValue_t tmpSensorValue; /* this is a float (32-bit), user data */
rgrover1 5:f4d74a8cad43 165 } PACKED;
sunsmile2015 0:3dc6e424dba0 166
electronichamsters 8:46c5e0bfab05 167
electronichamsters 8:46c5e0bfab05 168
electronichamsters 8:46c5e0bfab05 169 void debounce_Callback(void)
electronichamsters 8:46c5e0bfab05 170 {
electronichamsters 12:9bb01e063498 171 Tic_Debounce.detach();
electronichamsters 12:9bb01e063498 172 Flag_Update_IO = true; //start advertising
electronichamsters 8:46c5e0bfab05 173 /* Note that the buttonPressedCallback() executes in interrupt context, so it is safer to access
electronichamsters 8:46c5e0bfab05 174 * BLE device API from the main thread. */
electronichamsters 12:9bb01e063498 175
electronichamsters 8:46c5e0bfab05 176 }
electronichamsters 8:46c5e0bfab05 177
electronichamsters 12:9bb01e063498 178 //ISR for I/O interrupt
electronichamsters 8:46c5e0bfab05 179 void buttonPressedCallback(void)
sunsmile2015 2:b935358da5ba 180 {
electronichamsters 13:c2ffbb25ed0a 181 //for buttons, make debounce much shorter to make short press and long press easier
electronichamsters 13:c2ffbb25ed0a 182 Tic_Debounce.attach(debounce_Callback, 0.35); //ok to attach multiple times, recent one wins
electronichamsters 8:46c5e0bfab05 183 }
rgrover1 5:f4d74a8cad43 184
electronichamsters 12:9bb01e063498 185 //ISR for I/O interrupt
electronichamsters 8:46c5e0bfab05 186 void buttonReleasedCallback(void)
electronichamsters 8:46c5e0bfab05 187 {
electronichamsters 8:46c5e0bfab05 188
electronichamsters 12:9bb01e063498 189 Tic_Debounce.attach(debounce_Callback, 1);
electronichamsters 8:46c5e0bfab05 190 }
electronichamsters 8:46c5e0bfab05 191
electronichamsters 8:46c5e0bfab05 192
electronichamsters 8:46c5e0bfab05 193 void stop_adv_Callback(void)
electronichamsters 8:46c5e0bfab05 194 {
electronichamsters 8:46c5e0bfab05 195 //stops advertising after X seconds
electronichamsters 8:46c5e0bfab05 196 /* Note that the Callback() executes in interrupt context, so it is safer to do
rgrover1 5:f4d74a8cad43 197 * heavy-weight sensor polling from the main thread (where we should be able to block safely, if needed). */
electronichamsters 12:9bb01e063498 198 Flag_Detach_Adv_Tic = true;
electronichamsters 12:9bb01e063498 199
electronichamsters 12:9bb01e063498 200 }
electronichamsters 8:46c5e0bfab05 201
electronichamsters 12:9bb01e063498 202 /* ****************************************
electronichamsters 12:9bb01e063498 203 * Decides what actions need to be performed on periodic basis
electronichamsters 12:9bb01e063498 204 *******************************************/
electronichamsters 12:9bb01e063498 205 void periodic_Callback(void)
electronichamsters 12:9bb01e063498 206 {
electronichamsters 12:9bb01e063498 207 Flag_Update_IO = true;
electronichamsters 12:9bb01e063498 208 Flag_Periodic_Call = true;
electronichamsters 8:46c5e0bfab05 209 }
electronichamsters 8:46c5e0bfab05 210
electronichamsters 8:46c5e0bfab05 211
electronichamsters 12:9bb01e063498 212 /* ****************************************
electronichamsters 12:9bb01e063498 213 * No RTC available, tickers only have a 35 minute range.
electronichamsters 12:9bb01e063498 214 * So periodicity for spoof avoidance is set to 30 minutes
electronichamsters 12:9bb01e063498 215 *******************************************/
electronichamsters 10:79e8f92ef156 216 void clock_reset_Callback(void)
electronichamsters 10:79e8f92ef156 217 {
electronichamsters 10:79e8f92ef156 218 #if MyDebugEnb
electronichamsters 10:79e8f92ef156 219 device.printf("===== reset timer =====");
electronichamsters 10:79e8f92ef156 220 device.printf("\r\n");
electronichamsters 10:79e8f92ef156 221 #endif
electronichamsters 12:9bb01e063498 222 Tmr_From_Birthday.reset();
electronichamsters 10:79e8f92ef156 223 };
electronichamsters 10:79e8f92ef156 224
electronichamsters 12:9bb01e063498 225
rgrover1 5:f4d74a8cad43 226 void setupApplicationData(ApplicationData_t &appData)
sunsmile2015 4:e5fa4c8838db 227 {
electronichamsters 8:46c5e0bfab05 228 // two byte ID: 0xFEFE
electronichamsters 8:46c5e0bfab05 229 static const uint16_t APP_SPECIFIC_ID_TEST = 0xFEFE; //2 byte application ID
andresag 7:0a8bbb6dea16 230
sunsmile2015 4:e5fa4c8838db 231 appData.applicationSpecificId = APP_SPECIFIC_ID_TEST;
sunsmile2015 0:3dc6e424dba0 232 }
sunsmile2015 0:3dc6e424dba0 233
electronichamsters 8:46c5e0bfab05 234
electronichamsters 8:46c5e0bfab05 235
andresag 7:0a8bbb6dea16 236 /**
andresag 7:0a8bbb6dea16 237 * This function is called when the ble initialization process has failled
andresag 7:0a8bbb6dea16 238 */
andresag 7:0a8bbb6dea16 239 void onBleInitError(BLE &ble, ble_error_t error)
andresag 7:0a8bbb6dea16 240 {
andresag 7:0a8bbb6dea16 241 /* Initialization error handling should go here */
andresag 7:0a8bbb6dea16 242 }
andresag 7:0a8bbb6dea16 243
electronichamsters 12:9bb01e063498 244
electronichamsters 12:9bb01e063498 245
andresag 7:0a8bbb6dea16 246 /**
andresag 7:0a8bbb6dea16 247 * Callback triggered when the ble initialization process has finished
andresag 7:0a8bbb6dea16 248 */
andresag 7:0a8bbb6dea16 249 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
sunsmile2015 2:b935358da5ba 250 {
andresag 7:0a8bbb6dea16 251 BLE& ble = params->ble;
andresag 7:0a8bbb6dea16 252 ble_error_t error = params->error;
andresag 7:0a8bbb6dea16 253
andresag 7:0a8bbb6dea16 254 if (error != BLE_ERROR_NONE) {
andresag 7:0a8bbb6dea16 255 /* In case of error, forward the error handling to onBleInitError */
andresag 7:0a8bbb6dea16 256 onBleInitError(ble, error);
andresag 7:0a8bbb6dea16 257 return;
andresag 7:0a8bbb6dea16 258 }
andresag 7:0a8bbb6dea16 259
andresag 7:0a8bbb6dea16 260 /* Ensure that it is the default instance of BLE */
andresag 7:0a8bbb6dea16 261 if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) {
andresag 7:0a8bbb6dea16 262 return;
andresag 7:0a8bbb6dea16 263 }
electronichamsters 8:46c5e0bfab05 264
electronichamsters 8:46c5e0bfab05 265 /* Set device name characteristic data */
electronichamsters 8:46c5e0bfab05 266 ble.gap().setDeviceName((const uint8_t *) DEVICE_NAME);
andresag 7:0a8bbb6dea16 267
rgrover1 5:f4d74a8cad43 268 /* Setup advertising payload */
electronichamsters 8:46c5e0bfab05 269 //set modes "no EDR", "discoverable" for beacon type advertisements
rgrover1 5:f4d74a8cad43 270 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
electronichamsters 8:46c5e0bfab05 271
electronichamsters 11:4f925834167d 272
electronichamsters 8:46c5e0bfab05 273 //from GAP example
electronichamsters 8:46c5e0bfab05 274 /* Sacrifice 2B of 31B to AdvType overhead, rest goes to AdvData array you define */
electronichamsters 8:46c5e0bfab05 275 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, AdvData, sizeof(AdvData));
electronichamsters 8:46c5e0bfab05 276
electronichamsters 8:46c5e0bfab05 277 /* Setup advertising parameters: not connectable */
electronichamsters 8:46c5e0bfab05 278 ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_NON_CONNECTABLE_UNDIRECTED);
electronichamsters 12:9bb01e063498 279 ble.gap().setAdvertisingInterval(900); //one advertisment every 300ms. Self tickers, so you don't have to worry.
electronichamsters 8:46c5e0bfab05 280
electronichamsters 12:9bb01e063498 281 }
electronichamsters 8:46c5e0bfab05 282
electronichamsters 8:46c5e0bfab05 283
electronichamsters 11:4f925834167d 284 //not needed anymore
electronichamsters 8:46c5e0bfab05 285 void my_analogin_init(void)
electronichamsters 8:46c5e0bfab05 286 {
electronichamsters 10:79e8f92ef156 287
electronichamsters 8:46c5e0bfab05 288 NRF_ADC->CONFIG = (ADC_CONFIG_RES_10bit << ADC_CONFIG_RES_Pos) |
electronichamsters 8:46c5e0bfab05 289 (ADC_CONFIG_INPSEL_SupplyOneThirdPrescaling << ADC_CONFIG_INPSEL_Pos) |
electronichamsters 10:79e8f92ef156 290 //(ADC_CONFIG_INPSEL_AnalogInputOneThirdPrescaling << ADC_CONFIG_INPSEL_Pos) |
electronichamsters 8:46c5e0bfab05 291 (ADC_CONFIG_REFSEL_VBG << ADC_CONFIG_REFSEL_Pos) |
electronichamsters 8:46c5e0bfab05 292 (ADC_CONFIG_PSEL_Disabled << ADC_CONFIG_PSEL_Pos) |
electronichamsters 10:79e8f92ef156 293 //(ADC_CONFIG_PSEL_AnalogInput4 << ADC_CONFIG_PSEL_Pos) |
electronichamsters 8:46c5e0bfab05 294 (ADC_CONFIG_EXTREFSEL_None << ADC_CONFIG_EXTREFSEL_Pos);
electronichamsters 10:79e8f92ef156 295 NRF_ADC->ENABLE = ADC_ENABLE_ENABLE_Enabled;
electronichamsters 8:46c5e0bfab05 296 }
sunsmile2015 2:b935358da5ba 297
electronichamsters 12:9bb01e063498 298
electronichamsters 12:9bb01e063498 299 /* ****************************************
electronichamsters 12:9bb01e063498 300 * Read battery voltage using bandgap reference
electronichamsters 12:9bb01e063498 301 * shunt Vdd to ADC, thanks to Marcelo Salazar's notes here:
electronichamsters 12:9bb01e063498 302 * https://developer.mbed.org/users/MarceloSalazar/notebook/measuring-battery-voltage-with-nordic-nrf51x/
electronichamsters 12:9bb01e063498 303 *******************************************/
electronichamsters 12:9bb01e063498 304 uint16_t read_bat_volt(void)
electronichamsters 8:46c5e0bfab05 305 {
electronichamsters 10:79e8f92ef156 306 //10 bit resolution, route Vdd as analog input, set ADC ref to VBG band gap
electronichamsters 10:79e8f92ef156 307 //disable analog pin select "PSEL" because we're using Vdd as analog input
electronichamsters 10:79e8f92ef156 308 //no external voltage reference
electronichamsters 10:79e8f92ef156 309 NRF_ADC->CONFIG = (ADC_CONFIG_RES_10bit << ADC_CONFIG_RES_Pos) |
electronichamsters 10:79e8f92ef156 310 (ADC_CONFIG_INPSEL_SupplyOneThirdPrescaling << ADC_CONFIG_INPSEL_Pos) |
electronichamsters 10:79e8f92ef156 311 //(ADC_CONFIG_INPSEL_AnalogInputOneThirdPrescaling << ADC_CONFIG_INPSEL_Pos) |
electronichamsters 10:79e8f92ef156 312 (ADC_CONFIG_REFSEL_VBG << ADC_CONFIG_REFSEL_Pos) |
electronichamsters 10:79e8f92ef156 313 (ADC_CONFIG_PSEL_Disabled << ADC_CONFIG_PSEL_Pos) |
electronichamsters 10:79e8f92ef156 314 //(ADC_CONFIG_PSEL_AnalogInput4 << ADC_CONFIG_PSEL_Pos) |
electronichamsters 10:79e8f92ef156 315 (ADC_CONFIG_EXTREFSEL_None << ADC_CONFIG_EXTREFSEL_Pos);
electronichamsters 10:79e8f92ef156 316
electronichamsters 10:79e8f92ef156 317 //NRF_ADC->CONFIG &= ~ADC_CONFIG_PSEL_Msk;
electronichamsters 10:79e8f92ef156 318 //NRF_ADC->CONFIG |= ADC_CONFIG_PSEL_Disabled << ADC_CONFIG_PSEL_Pos;
electronichamsters 10:79e8f92ef156 319 NRF_ADC->ENABLE = ADC_ENABLE_ENABLE_Enabled;
electronichamsters 10:79e8f92ef156 320 NRF_ADC->TASKS_START = 1;
electronichamsters 10:79e8f92ef156 321
electronichamsters 10:79e8f92ef156 322 //while loop doesn't actually loop until reading comlete, use a wait.
electronichamsters 10:79e8f92ef156 323 while (((NRF_ADC->BUSY & ADC_BUSY_BUSY_Msk) >> ADC_BUSY_BUSY_Pos) == ADC_BUSY_BUSY_Busy) {};
electronichamsters 13:c2ffbb25ed0a 324 wait_ms(2);
electronichamsters 10:79e8f92ef156 325
electronichamsters 10:79e8f92ef156 326 //save off RESULT before disabling.
electronichamsters 10:79e8f92ef156 327 //uint16_t myresult = (uint16_t)NRF_ADC->RESULT;
electronichamsters 10:79e8f92ef156 328
electronichamsters 10:79e8f92ef156 329 //disable ADC to lower bat consumption
electronichamsters 13:c2ffbb25ed0a 330 //NRF_ADC->TASKS_STOP = 1; //perform disable in main loop
electronichamsters 10:79e8f92ef156 331 //NRF_ADC->ENABLE = ADC_ENABLE_ENABLE_Disabled; //disable to shutdown ADC & lower bat consumption
electronichamsters 10:79e8f92ef156 332
electronichamsters 10:79e8f92ef156 333 return (uint16_t)NRF_ADC->RESULT; // 10 bit
electronichamsters 10:79e8f92ef156 334 //return myresult;
electronichamsters 12:9bb01e063498 335 } //end read_bat_volt
electronichamsters 12:9bb01e063498 336
electronichamsters 12:9bb01e063498 337
electronichamsters 10:79e8f92ef156 338
electronichamsters 12:9bb01e063498 339 /* ****************************************
electronichamsters 12:9bb01e063498 340 * Read battery voltage using bandgap reference
electronichamsters 12:9bb01e063498 341 * shunt analog pin to ADC, from API here
electronichamsters 12:9bb01e063498 342 * https://developer.mbed.org/users/mbed_official/code/mbed-src/file/cb4253f91ada/targets/hal/TARGET_NORDIC/TARGET_NRF51822/analogin_api.c
electronichamsters 12:9bb01e063498 343 *******************************************/
electronichamsters 12:9bb01e063498 344 uint16_t read_ADC_pin(void)
electronichamsters 10:79e8f92ef156 345 {
electronichamsters 10:79e8f92ef156 346
electronichamsters 10:79e8f92ef156 347 //10 bit resolution, route PSEL pin as 1/3 input sel,
electronichamsters 10:79e8f92ef156 348 //set ADC ref to VBG band gap
electronichamsters 10:79e8f92ef156 349 //set AnalogInput4 as input pin (this is P0.03)
electronichamsters 10:79e8f92ef156 350 //no external voltage reference
electronichamsters 10:79e8f92ef156 351 NRF_ADC->CONFIG = (ADC_CONFIG_RES_10bit << ADC_CONFIG_RES_Pos) |
electronichamsters 10:79e8f92ef156 352 //(ADC_CONFIG_INPSEL_SupplyOneThirdPrescaling << ADC_CONFIG_INPSEL_Pos) |
electronichamsters 10:79e8f92ef156 353 (ADC_CONFIG_INPSEL_AnalogInputOneThirdPrescaling << ADC_CONFIG_INPSEL_Pos) |
electronichamsters 10:79e8f92ef156 354 (ADC_CONFIG_REFSEL_VBG << ADC_CONFIG_REFSEL_Pos) |
electronichamsters 10:79e8f92ef156 355 //ADC_CONFIG_PSEL_Disabled << ADC_CONFIG_PSEL_Pos) |
electronichamsters 10:79e8f92ef156 356 (ADC_CONFIG_PSEL_AnalogInput4 << ADC_CONFIG_PSEL_Pos) |
electronichamsters 10:79e8f92ef156 357 (ADC_CONFIG_EXTREFSEL_None << ADC_CONFIG_EXTREFSEL_Pos);
electronichamsters 10:79e8f92ef156 358 //set pin select to AnalogInput4 = pin 7 = p0.03 = AIN4
electronichamsters 10:79e8f92ef156 359 //NRF_ADC->CONFIG &= ~ADC_CONFIG_PSEL_Msk;
electronichamsters 10:79e8f92ef156 360 //NRF_ADC->CONFIG |= ADC_CONFIG_PSEL_AnalogInput4 << ADC_CONFIG_PSEL_Pos;
electronichamsters 10:79e8f92ef156 361 NRF_ADC->ENABLE = ADC_ENABLE_ENABLE_Enabled;
electronichamsters 8:46c5e0bfab05 362 NRF_ADC->TASKS_START = 1;
electronichamsters 8:46c5e0bfab05 363
electronichamsters 8:46c5e0bfab05 364
electronichamsters 8:46c5e0bfab05 365 //while loop doesn't actually loop until reading comlete, use a wait.
electronichamsters 8:46c5e0bfab05 366 while (((NRF_ADC->BUSY & ADC_BUSY_BUSY_Msk) >> ADC_BUSY_BUSY_Pos) == ADC_BUSY_BUSY_Busy) {};
electronichamsters 13:c2ffbb25ed0a 367 //wait_ms(2); //needed because busy while loop doesn't run.
electronichamsters 8:46c5e0bfab05 368
electronichamsters 8:46c5e0bfab05 369 //save off RESULT before disabling.
electronichamsters 8:46c5e0bfab05 370 //uint16_t myresult = (uint16_t)NRF_ADC->RESULT;
electronichamsters 8:46c5e0bfab05 371
electronichamsters 8:46c5e0bfab05 372 //disable ADC to lower bat consumption
electronichamsters 8:46c5e0bfab05 373 //NRF_ADC->TASKS_STOP = 1;
electronichamsters 8:46c5e0bfab05 374 //NRF_ADC->ENABLE = ADC_ENABLE_ENABLE_Disabled; //disable to shutdown ADC & lower bat consumption
electronichamsters 8:46c5e0bfab05 375
electronichamsters 8:46c5e0bfab05 376 return (uint16_t)NRF_ADC->RESULT; // 10 bit
electronichamsters 8:46c5e0bfab05 377 //return myresult;
electronichamsters 12:9bb01e063498 378 } //end read_ADC_pin
sunsmile2015 4:e5fa4c8838db 379
electronichamsters 10:79e8f92ef156 380
electronichamsters 12:9bb01e063498 381 /* ****************************************
electronichamsters 12:9bb01e063498 382 * Pattern scheme indicating "one of ours"
electronichamsters 12:9bb01e063498 383 * generate first part of ADV data so that observer can recognize it as "one of ours".
electronichamsters 12:9bb01e063498 384 * use specific schema to decide how we're recognizing our sensor ADV
electronichamsters 12:9bb01e063498 385 *******************************************/
electronichamsters 10:79e8f92ef156 386 void hash_first_section(uint8_t * dest, const uint8_t * mac_addr, const char * bat_volt_str)
electronichamsters 10:79e8f92ef156 387 {
electronichamsters 10:79e8f92ef156 388 dest[0] = mac_addr[3];
electronichamsters 10:79e8f92ef156 389 dest[1] = mac_addr[2];
electronichamsters 10:79e8f92ef156 390 dest[2] = mac_addr[1];
electronichamsters 10:79e8f92ef156 391 dest[3] = mac_addr[0];
electronichamsters 10:79e8f92ef156 392 dest[4] = bat_volt_str[0];
electronichamsters 10:79e8f92ef156 393 dest[5] = bat_volt_str[1];
electronichamsters 10:79e8f92ef156 394 dest[6] = bat_volt_str[2];
electronichamsters 10:79e8f92ef156 395 dest[7] = bat_volt_str[3];
electronichamsters 10:79e8f92ef156 396 dest[8] = 0x10;
electronichamsters 10:79e8f92ef156 397 dest[9] = 0x11;
electronichamsters 12:9bb01e063498 398 #if MyDebugEnb
electronichamsters 12:9bb01e063498 399
electronichamsters 12:9bb01e063498 400 device.printf("hash array: ");
electronichamsters 12:9bb01e063498 401 for (int i=0; i<10; i++)
electronichamsters 12:9bb01e063498 402 {
electronichamsters 12:9bb01e063498 403 device.printf("%x ", dest[i]);
electronichamsters 12:9bb01e063498 404 }
electronichamsters 12:9bb01e063498 405 device.printf("\r\n");
electronichamsters 12:9bb01e063498 406 #endif
electronichamsters 10:79e8f92ef156 407 }
electronichamsters 10:79e8f92ef156 408
electronichamsters 10:79e8f92ef156 409
electronichamsters 12:9bb01e063498 410 /* ****************************************
electronichamsters 12:9bb01e063498 411 *
electronichamsters 12:9bb01e063498 412 * Main Loop
electronichamsters 12:9bb01e063498 413 *
electronichamsters 12:9bb01e063498 414 *******************************************/
sunsmile2015 2:b935358da5ba 415 int main(void)
sunsmile2015 2:b935358da5ba 416 {
electronichamsters 8:46c5e0bfab05 417
electronichamsters 12:9bb01e063498 418 #if MyDebugEnb
electronichamsters 12:9bb01e063498 419 device.baud(9600);
electronichamsters 12:9bb01e063498 420 device.printf("started sensor node 36 ");
electronichamsters 12:9bb01e063498 421 device.printf("\r\n");
electronichamsters 12:9bb01e063498 422 #endif
electronichamsters 8:46c5e0bfab05 423
electronichamsters 8:46c5e0bfab05 424
electronichamsters 12:9bb01e063498 425 Tmr_From_Birthday.start(); //tracks # sec since birthday
electronichamsters 8:46c5e0bfab05 426
sunsmile2015 0:3dc6e424dba0 427
andresag 7:0a8bbb6dea16 428 BLE &ble = BLE::Instance();
andresag 7:0a8bbb6dea16 429 ble.init(bleInitComplete);
electronichamsters 8:46c5e0bfab05 430
electronichamsters 8:46c5e0bfab05 431 float bat_reading; //hold battery voltage reading (Vbg/Vcc)
electronichamsters 8:46c5e0bfab05 432
electronichamsters 8:46c5e0bfab05 433 my_analogin_init();//routes band-gap to analog input
andresag 7:0a8bbb6dea16 434
andresag 7:0a8bbb6dea16 435 /* SpinWait for initialization to complete. This is necessary because the
andresag 7:0a8bbb6dea16 436 * BLE object is used in the main loop below. */
electronichamsters 8:46c5e0bfab05 437 while (ble.hasInitialized() == false) { /* spin loop */ }
electronichamsters 8:46c5e0bfab05 438
electronichamsters 8:46c5e0bfab05 439 //every X seconds, sends period update, up to 1800 (30 minutes)
electronichamsters 13:c2ffbb25ed0a 440 #if Periodic_Update_Seconds
electronichamsters 12:9bb01e063498 441 Tic_Periodic.attach(periodic_Callback, Periodic_Update_Seconds); //send updated I/O every x seconds
electronichamsters 13:c2ffbb25ed0a 442 #endif
electronichamsters 12:9bb01e063498 443 Tic_Birthday.attach(clock_reset_Callback, Periodicity); //clock algorithm periodicity
rgrover1 5:f4d74a8cad43 444
electronichamsters 10:79e8f92ef156 445
electronichamsters 12:9bb01e063498 446 ble.getAddress(0,mac_reverse); //last byte of MAC (as shown on phone app) is at mac[0], not mac[6];
electronichamsters 12:9bb01e063498 447 #if MyDebugEnb
electronichamsters 12:9bb01e063498 448 device.printf("mac = ");
electronichamsters 12:9bb01e063498 449 for (int i=0; i<6; i++) //prints out MAC address in reverse order; opps.
electronichamsters 12:9bb01e063498 450 {
electronichamsters 12:9bb01e063498 451 device.printf("%x:", mac_reverse[i]);
electronichamsters 12:9bb01e063498 452 }
electronichamsters 12:9bb01e063498 453 device.printf("\r\n");
electronichamsters 12:9bb01e063498 454 #endif
electronichamsters 12:9bb01e063498 455 while (true)
electronichamsters 12:9bb01e063498 456 { //Main Loop
electronichamsters 12:9bb01e063498 457
electronichamsters 12:9bb01e063498 458 uint16_t seconds_Old =(uint16_t)(Tmr_From_Birthday.read_ms()/1000); // 0-1800 seconds (30 minutes)
electronichamsters 12:9bb01e063498 459
electronichamsters 12:9bb01e063498 460 #if MyDebugEnb
electronichamsters 12:9bb01e063498 461 device.printf("current time in seconds: %d \r\n", seconds_Old);
electronichamsters 12:9bb01e063498 462 #endif
electronichamsters 12:9bb01e063498 463
electronichamsters 8:46c5e0bfab05 464 //set both pins to pull-up, so they're not floating when we read state
electronichamsters 8:46c5e0bfab05 465 button1.mode(PullUp);
electronichamsters 13:c2ffbb25ed0a 466 //button2.mode(PullUp);
electronichamsters 13:c2ffbb25ed0a 467 //for buttons, always wake on press, but not release.
electronichamsters 13:c2ffbb25ed0a 468 button1.fall(buttonReleasedCallback);
electronichamsters 8:46c5e0bfab05 469
electronichamsters 8:46c5e0bfab05 470 //expect either button1 or button2 is grounded, b/c using SPDT reed switch
electronichamsters 8:46c5e0bfab05 471 //the "common" pin on the reed switch should be on GND
electronichamsters 8:46c5e0bfab05 472 uint8_t button1_state = button1.read();
electronichamsters 13:c2ffbb25ed0a 473 //uint8_t button2_state = button2.read();
electronichamsters 8:46c5e0bfab05 474
electronichamsters 8:46c5e0bfab05 475
electronichamsters 8:46c5e0bfab05 476 //let's just update the pins on every wake. Insurance against const drain.
electronichamsters 12:9bb01e063498 477 //if state == 0, pin is grounded. Unset interrupt and float pin, set the other pin for ISR
electronichamsters 13:c2ffbb25ed0a 478 //if ( (button1_state == 0) && (button2_state == 1) )
electronichamsters 13:c2ffbb25ed0a 479 if (button1_state == 0)
electronichamsters 8:46c5e0bfab05 480 {
electronichamsters 8:46c5e0bfab05 481 magnet_near = 1;
electronichamsters 8:46c5e0bfab05 482 //button1.disable_irq() //don't know if disables IRQ on port or pin
electronichamsters 13:c2ffbb25ed0a 483 //button1.fall(NULL); //disable interrupt
electronichamsters 13:c2ffbb25ed0a 484 //button1.rise(NULL); //disable interrupt
electronichamsters 13:c2ffbb25ed0a 485 //button1.mode(PullNone); //float pin to save battery
electronichamsters 8:46c5e0bfab05 486
electronichamsters 8:46c5e0bfab05 487 //button2.disable_irq() //don't know if disables IRQ on port or pin
electronichamsters 13:c2ffbb25ed0a 488 //button2.fall(buttonReleasedCallback); //enable interrupt
electronichamsters 13:c2ffbb25ed0a 489 //button2.rise(buttonReleasedCallback); //enable interrupt
electronichamsters 13:c2ffbb25ed0a 490 //button2.mode(PullUp); //pull up on pin to get interrupt
electronichamsters 12:9bb01e063498 491 #if MyDebugEnb
electronichamsters 12:9bb01e063498 492 device.printf("=== button 1! %d seconds=== \r\n", seconds_Old);
electronichamsters 12:9bb01e063498 493 #endif
electronichamsters 12:9bb01e063498 494 } //end if button2
electronichamsters 13:c2ffbb25ed0a 495 else if (button1_state == 1) //assume other pin is open circuit
electronichamsters 8:46c5e0bfab05 496 {
electronichamsters 8:46c5e0bfab05 497 magnet_near = 0;
electronichamsters 8:46c5e0bfab05 498 //button1.disable_irq() //don't know if disables IRQ on port or pin
electronichamsters 13:c2ffbb25ed0a 499 //button1.fall(buttonReleasedCallback); //enable interrupt
electronichamsters 13:c2ffbb25ed0a 500 //button1.rise(buttonReleasedCallback); //enable interrupt
electronichamsters 13:c2ffbb25ed0a 501 //button1.mode(PullUp); //pull up on pin to get interrupt
electronichamsters 8:46c5e0bfab05 502
electronichamsters 8:46c5e0bfab05 503 //button2.disable_irq() //don't know if disables IRQ on port or pin
electronichamsters 13:c2ffbb25ed0a 504 //button2.fall(NULL); //disable interrupt
electronichamsters 13:c2ffbb25ed0a 505 //button2.rise(NULL); //disable interrupt
electronichamsters 13:c2ffbb25ed0a 506 //button2.mode(PullNone); //float pin to save battery
electronichamsters 12:9bb01e063498 507 #if MyDebugEnb
electronichamsters 12:9bb01e063498 508 device.printf("=== button 2! === %d seconds\r\n", seconds_Old);
electronichamsters 12:9bb01e063498 509 #endif
electronichamsters 12:9bb01e063498 510 } //end if button1
electronichamsters 8:46c5e0bfab05 511
electronichamsters 8:46c5e0bfab05 512
electronichamsters 12:9bb01e063498 513 if (Flag_Update_IO) {
andresag 7:0a8bbb6dea16 514 /* Do blocking calls or whatever hardware-specific action is
andresag 7:0a8bbb6dea16 515 * necessary to poll the sensor. */
electronichamsters 8:46c5e0bfab05 516
electronichamsters 12:9bb01e063498 517 //call attach again on periodic update to reset ticker
electronichamsters 12:9bb01e063498 518 //next periodic updates happens Perioidc_Update_Seconds after I/O events
electronichamsters 12:9bb01e063498 519 Tic_Periodic.attach(periodic_Callback, Periodic_Update_Seconds);
electronichamsters 10:79e8f92ef156 520 Xmit_Cnt++; //increment transmit counter when updating I/O
electronichamsters 10:79e8f92ef156 521
electronichamsters 10:79e8f92ef156 522
electronichamsters 12:9bb01e063498 523 //read and convert battery voltage
electronichamsters 12:9bb01e063498 524 bat_reading = (float)read_bat_volt();
electronichamsters 8:46c5e0bfab05 525 bat_reading = (bat_reading * 3.6) / 1024.0;
electronichamsters 12:9bb01e063498 526 #if MyDebugEnb
electronichamsters 8:46c5e0bfab05 527 device.printf("bat reading: %f \r\n", bat_reading);
electronichamsters 12:9bb01e063498 528 #endif
electronichamsters 12:9bb01e063498 529 //write battery voltage
electronichamsters 12:9bb01e063498 530 uint8_t total_chars;
electronichamsters 12:9bb01e063498 531 memset(&bat_volt_char[0], 0, sizeof(bat_volt_char)); //clear out buffer
electronichamsters 12:9bb01e063498 532 //convert battery voltage float value to string reprsentation to 2 decimal places, and save the size of string.
electronichamsters 12:9bb01e063498 533 total_chars = sprintf (bat_volt_char, "%.2f", bat_reading);
electronichamsters 8:46c5e0bfab05 534
electronichamsters 12:9bb01e063498 535
electronichamsters 12:9bb01e063498 536 //read and convert analog voltage. Comment out this section if note needed, saves some battery
electronichamsters 10:79e8f92ef156 537 NRF_ADC->TASKS_STOP = 1;
electronichamsters 10:79e8f92ef156 538 float analogreading;
electronichamsters 13:c2ffbb25ed0a 539 //analogreading = (float)read_ADC_pin(); //comment out for beacon buttons
electronichamsters 10:79e8f92ef156 540 analogreading = (analogreading * 3.6) / 1024.0;
electronichamsters 10:79e8f92ef156 541 #if MyDebugEnb
electronichamsters 10:79e8f92ef156 542 device.printf("separate analog reading: %.02f \r\n", analogreading);
electronichamsters 10:79e8f92ef156 543 #endif
electronichamsters 10:79e8f92ef156 544
electronichamsters 12:9bb01e063498 545 //disable ADC to save power
electronichamsters 8:46c5e0bfab05 546 NRF_ADC->TASKS_STOP = 1;
electronichamsters 8:46c5e0bfab05 547 NRF_ADC->ENABLE = ADC_ENABLE_ENABLE_Disabled; //disable to shutdown ADC & lower bat consumption
electronichamsters 8:46c5e0bfab05 548
electronichamsters 10:79e8f92ef156 549
electronichamsters 12:9bb01e063498 550 #if MyDebugEnb
electronichamsters 12:9bb01e063498 551 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 552 device.printf("num chars: %d \r\n", total_chars);
electronichamsters 12:9bb01e063498 553 #endif
electronichamsters 8:46c5e0bfab05 554
electronichamsters 8:46c5e0bfab05 555
electronichamsters 12:9bb01e063498 556 //Generate "First Section" for ADV_Data so gateway will recognize our advertisement pattern
electronichamsters 12:9bb01e063498 557 hash_first_section(Adv_First_Section, mac_reverse, bat_volt_char);
electronichamsters 8:46c5e0bfab05 558
electronichamsters 10:79e8f92ef156 559
electronichamsters 12:9bb01e063498 560 /* ****************************************
electronichamsters 12:9bb01e063498 561 * start writing out ADVData array
electronichamsters 12:9bb01e063498 562 * todo: this is easy to write but hard to read. Maybe make it easy to read and hard to write?
electronichamsters 12:9bb01e063498 563 ******************************************/
electronichamsters 10:79e8f92ef156 564 memset(&AdvData[0], 0, sizeof(AdvData));
electronichamsters 10:79e8f92ef156 565 uint8_t JSON_loc=0; //AdvData[0]
electronichamsters 10:79e8f92ef156 566
electronichamsters 12:9bb01e063498 567 AdvData[0] = Adv_First_Section[0]; //"our device" flag, MAC[3]
electronichamsters 12:9bb01e063498 568 JSON_loc++; //JSON_loc == 1
electronichamsters 12:9bb01e063498 569 AdvData[1] = Adv_First_Section[1]; //"out device" flag, MAC[2]...
electronichamsters 12:9bb01e063498 570 JSON_loc++; //JSON_loc == 2
electronichamsters 12:9bb01e063498 571 AdvData[2] = Adv_First_Section[2];
electronichamsters 12:9bb01e063498 572 JSON_loc++; //JSON_loc == 3
electronichamsters 12:9bb01e063498 573 AdvData[3] = Adv_First_Section[3];
electronichamsters 12:9bb01e063498 574 JSON_loc++; //JSON_loc == 4
electronichamsters 12:9bb01e063498 575 AdvData[4] = Adv_First_Section[4];
electronichamsters 12:9bb01e063498 576 JSON_loc++; //JSON_loc == 5
electronichamsters 12:9bb01e063498 577 AdvData[5] = Adv_First_Section[5];
electronichamsters 12:9bb01e063498 578 JSON_loc++; //JSON_loc == 6
electronichamsters 12:9bb01e063498 579 AdvData[6] = Adv_First_Section[6];
electronichamsters 10:79e8f92ef156 580 JSON_loc++;
electronichamsters 12:9bb01e063498 581 AdvData[7] = Adv_First_Section[7];
electronichamsters 10:79e8f92ef156 582 JSON_loc++;
electronichamsters 12:9bb01e063498 583 AdvData[8] = Adv_First_Section[8];
electronichamsters 10:79e8f92ef156 584 JSON_loc++;
electronichamsters 12:9bb01e063498 585 AdvData[9] = Adv_First_Section[9];
electronichamsters 8:46c5e0bfab05 586 JSON_loc++;
electronichamsters 10:79e8f92ef156 587
electronichamsters 12:9bb01e063498 588 #if MyDebugEnb
electronichamsters 12:9bb01e063498 589 device.printf("ADV first 10 array: ");
electronichamsters 12:9bb01e063498 590 for (int i=0; i<10; i++)
electronichamsters 12:9bb01e063498 591 {
electronichamsters 12:9bb01e063498 592 device.printf("%x ", AdvData[i]);
electronichamsters 12:9bb01e063498 593 }
electronichamsters 12:9bb01e063498 594 device.printf("\r\n");
electronichamsters 12:9bb01e063498 595 #endif
electronichamsters 10:79e8f92ef156 596
electronichamsters 10:79e8f92ef156 597
electronichamsters 10:79e8f92ef156 598 JSON_loc = 10;
electronichamsters 12:9bb01e063498 599 //Start of encrypted user data
electronichamsters 12:9bb01e063498 600
electronichamsters 12:9bb01e063498 601 //[10] and [11] hold 2 bytes for how many seconds since birthday, little endian
electronichamsters 12:9bb01e063498 602 AdvData[10] = seconds_Old & 0xFF;
electronichamsters 8:46c5e0bfab05 603 JSON_loc++;
electronichamsters 12:9bb01e063498 604 AdvData[11] = (seconds_Old >> 8) & 0xFF;
electronichamsters 10:79e8f92ef156 605 JSON_loc++;
electronichamsters 12:9bb01e063498 606
electronichamsters 10:79e8f92ef156 607 AdvData[12] = Xmit_Cnt;
electronichamsters 8:46c5e0bfab05 608 JSON_loc++;
electronichamsters 12:9bb01e063498 609
electronichamsters 10:79e8f92ef156 610 //start of jason data
electronichamsters 12:9bb01e063498 611 //"mag":
electronichamsters 10:79e8f92ef156 612 JSON_loc = 13;
electronichamsters 12:9bb01e063498 613 AdvData[JSON_loc] = 0x22; //ADV_Data[13] = "
electronichamsters 10:79e8f92ef156 614 JSON_loc++; //14
electronichamsters 8:46c5e0bfab05 615
electronichamsters 13:c2ffbb25ed0a 616 AdvData[JSON_loc] = 'B'; //ADV_Data[14] = B
electronichamsters 10:79e8f92ef156 617 JSON_loc++; //15
electronichamsters 10:79e8f92ef156 618
electronichamsters 13:c2ffbb25ed0a 619 AdvData[JSON_loc] = 'E'; //ADV_Data[15] = E
electronichamsters 10:79e8f92ef156 620 JSON_loc++; //16
electronichamsters 10:79e8f92ef156 621
electronichamsters 13:c2ffbb25ed0a 622 AdvData[JSON_loc] = 'A'; //ADV_Data[16] = A
electronichamsters 10:79e8f92ef156 623 JSON_loc++; //17
electronichamsters 8:46c5e0bfab05 624
electronichamsters 12:9bb01e063498 625 //for periodic calls, we want to add an extra mqtt level "p", using "/p"
electronichamsters 12:9bb01e063498 626 //to delineate between MQTT publishes from real world I/O interrupts vs timer interrupts
electronichamsters 12:9bb01e063498 627 if (Flag_Periodic_Call)
electronichamsters 8:46c5e0bfab05 628 {
electronichamsters 12:9bb01e063498 629 AdvData[JSON_loc] = 0x2f; // ADV_Data[17] = /
electronichamsters 12:9bb01e063498 630 JSON_loc++; //18
electronichamsters 12:9bb01e063498 631 AdvData[JSON_loc] = 0x70; // ADV_Data[18] =p
electronichamsters 12:9bb01e063498 632 JSON_loc++; //19
electronichamsters 12:9bb01e063498 633 }
electronichamsters 8:46c5e0bfab05 634
electronichamsters 12:9bb01e063498 635 AdvData[JSON_loc] = 0x22; //ADV_Data[17 or 19] = "
electronichamsters 10:79e8f92ef156 636 JSON_loc++; //20
electronichamsters 8:46c5e0bfab05 637
electronichamsters 12:9bb01e063498 638 AdvData[JSON_loc] = 0x3a; //ADV_Data[18 or 20] = :
electronichamsters 12:9bb01e063498 639 JSON_loc++; //21
electronichamsters 8:46c5e0bfab05 640
electronichamsters 12:9bb01e063498 641 //convert magnet variable to string, for magnet sensor, this is easy
electronichamsters 12:9bb01e063498 642 //since we only have 1 or 0, but this also works for analog values
electronichamsters 8:46c5e0bfab05 643 memset(&buffer[0], 0, sizeof(buffer)); //clear out buffer
electronichamsters 10:79e8f92ef156 644 total_chars = sprintf (buffer, "%d", magnet_near); //returns total number of characters, which is 1 character.
electronichamsters 8:46c5e0bfab05 645 for (int i=0; i < total_chars; i++)
electronichamsters 8:46c5e0bfab05 646 {
electronichamsters 8:46c5e0bfab05 647 AdvData[JSON_loc] = buffer[i];
electronichamsters 10:79e8f92ef156 648 JSON_loc++; //23
electronichamsters 8:46c5e0bfab05 649 } //JSON_loc left at location of next character
electronichamsters 8:46c5e0bfab05 650
electronichamsters 12:9bb01e063498 651
electronichamsters 12:9bb01e063498 652 //AdvData[JSON_loc] = 0x0; //since AdvData was cleared to start with, we don't need to null term
electronichamsters 8:46c5e0bfab05 653
rgrover1 5:f4d74a8cad43 654 ApplicationData_t appData;
rgrover1 5:f4d74a8cad43 655 setupApplicationData(appData);
electronichamsters 8:46c5e0bfab05 656
electronichamsters 12:9bb01e063498 657 /*********************
electronichamsters 12:9bb01e063498 658 * start encrypting last 16 bytes of ADV_Data
electronichamsters 12:9bb01e063498 659 *********************/
electronichamsters 8:46c5e0bfab05 660 for (int i=0; i<16; i++)
electronichamsters 8:46c5e0bfab05 661 {
electronichamsters 10:79e8f92ef156 662 src_buf[i] = AdvData[i+10]; //start of encrypted section is at AdvData[10]
electronichamsters 8:46c5e0bfab05 663 }
electronichamsters 8:46c5e0bfab05 664 nrf_ecb_init();
electronichamsters 8:46c5e0bfab05 665 nrf_ecb_set_key(key_buf);
electronichamsters 8:46c5e0bfab05 666 bool successful_ecb = nrf_ecb_crypt(des_buf, src_buf);
electronichamsters 12:9bb01e063498 667 #if MyDebugEnb
electronichamsters 12:9bb01e063498 668 device.printf("success ecb = %d \r\n", successful_ecb);
electronichamsters 12:9bb01e063498 669 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 670 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 671 #endif
electronichamsters 12:9bb01e063498 672 for (int i=0; i<16; i++) //replace last 16 bytes with encrypted 16 bytes
electronichamsters 8:46c5e0bfab05 673 {
electronichamsters 10:79e8f92ef156 674 AdvData[i+10] = des_buf[i];
electronichamsters 8:46c5e0bfab05 675 }
electronichamsters 8:46c5e0bfab05 676
electronichamsters 12:9bb01e063498 677 //set payload for advertisement to our custom manufactured data. First 5 bytes is BLE standard, last 26 bytes is our array
electronichamsters 8:46c5e0bfab05 678 //ble.gap().updateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, (uint8_t *) &appData, sizeof(ApplicationData_t));
electronichamsters 8:46c5e0bfab05 679 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, AdvData, sizeof(AdvData));
electronichamsters 8:46c5e0bfab05 680
electronichamsters 12:9bb01e063498 681 Flag_Update_IO = false;
electronichamsters 12:9bb01e063498 682 Flag_Periodic_Call = false;
electronichamsters 8:46c5e0bfab05 683
electronichamsters 8:46c5e0bfab05 684 ble.gap().startAdvertising();
electronichamsters 12:9bb01e063498 685 Tic_Stop_Adv.attach(stop_adv_Callback, 3); /* trigger turn off advertisement after X seconds */
electronichamsters 8:46c5e0bfab05 686
electronichamsters 12:9bb01e063498 687 }//end Flag_Update_IO
electronichamsters 8:46c5e0bfab05 688
electronichamsters 8:46c5e0bfab05 689
electronichamsters 12:9bb01e063498 690 if (Flag_Detach_Adv_Tic == true) //ticker callback flag to stop advertising
electronichamsters 8:46c5e0bfab05 691 {
electronichamsters 8:46c5e0bfab05 692 ble.gap().stopAdvertising(); //may be safer to execute BLE operations in main
electronichamsters 12:9bb01e063498 693 Tic_Stop_Adv.detach();
electronichamsters 12:9bb01e063498 694 Flag_Detach_Adv_Tic = false;
electronichamsters 8:46c5e0bfab05 695 }
electronichamsters 12:9bb01e063498 696
electronichamsters 8:46c5e0bfab05 697
electronichamsters 12:9bb01e063498 698 ble.waitForEvent(); //sleeps until interrupt form ticker or I/O
electronichamsters 8:46c5e0bfab05 699 }//end forever while
electronichamsters 8:46c5e0bfab05 700 }//end main