Brandon Davies / Mbed 2 deprecated eleven-x-semtech-workshop-demo

Workshop demo program

Dependencies:   PinDetect mbed LoRaWAN-lib SX1272Lib

app/app.cpp@15:07f7e9ce7e21, 2017-05-02 (annotated)

Committer:
Brandond200
Date:
Tue May 02 13:30:48 2017 +0000
Revision:
15:07f7e9ce7e21
Parent:
14:7d092ebf7250
Child:
16:4667c0c0b48b
set max number of blinks queued. Added shmit trigger for alarm so now it works when going up and down, not just up.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sergei11522 7:d7cdd6804277 1 #include "main.h"
sergei11522 7:d7cdd6804277 2 #include "mbed.h"
sergei11522 7:d7cdd6804277 3 #include "DebounceIn.h"
sergei11522 7:d7cdd6804277 4 #include "PinNames.h"
Brandond200 8:fb8b53c490e1 5 #include "timer.h"
Brandond200 10:2eb7b1614bb8 6 #include <math.h>
Brandond200 8:fb8b53c490e1 7 #include "app.h"
Brandond200 8:fb8b53c490e1 8 #include "SerialDisplay.h"
sergei11522 7:d7cdd6804277 9
sergei11522 7:d7cdd6804277 10 //initialize our sensors
sergei11522 7:d7cdd6804277 11 DebounceIn button(D6);
sergei11522 7:d7cdd6804277 12 DigitalOut led(A1);
sergei11522 7:d7cdd6804277 13 AnalogIn rotary(A3); //the potentiometer/rotary sensor
sergei11522 7:d7cdd6804277 14
Brandond200 12:67fcab1e915a 15 //changable alarm threashold
Brandond200 12:67fcab1e915a 16 #define ALARM_THRESHOLD 100 /*alarm triggered over this percentage*/
Brandond200 10:2eb7b1614bb8 17
Brandond200 12:67fcab1e915a 18 //constatnts
Brandond200 10:2eb7b1614bb8 19 #define BYTE_TO_PERCENT 655.35/*divisor to convert 2 byte number into number between 0 and 100*/
Brandond200 10:2eb7b1614bb8 20 #define TWO_HUNDRED_MILLISECONDS 200 * 1000 /*200 miliseconds in microseconds */
Brandond200 12:67fcab1e915a 21
Brandond200 12:67fcab1e915a 22 //myDevies codes
Brandond200 12:67fcab1e915a 23 #define ROTATION_DATA_CHANNEL 0 /* myDevices channel to send rotation position on*/
Brandond200 10:2eb7b1614bb8 24 #define ROTATION_DATA_TYPE 2 /*2 = Analog Input */
Brandond200 12:67fcab1e915a 25 #define ALARM_DATA_CHANNEL 1 /* myDevices channel to send alarm status on*/
Brandond200 10:2eb7b1614bb8 26 #define ALARM_DATA_TYPE 0 /*0 = Digital Input */
Brandond200 12:67fcab1e915a 27
Brandond200 12:67fcab1e915a 28 //settings to not change
Brandond200 10:2eb7b1614bb8 29 #define MAX_DATA_LENGTH 64
Brandond200 10:2eb7b1614bb8 30 #define BLINK_COUNT_EVENT_TRANSMIT 1
Brandond200 10:2eb7b1614bb8 31 #define BLINK_COUNT_TIMER_TRANSMIT 2
Brandond200 10:2eb7b1614bb8 32 #define BLINK_COUNT_DOWNLINK_CONFIRMATION 3
Brandond200 12:67fcab1e915a 33 #define BLINK_COUNT_JOINED 5
Brandond200 10:2eb7b1614bb8 34
Brandond200 10:2eb7b1614bb8 35 //network variables
Brandond200 10:2eb7b1614bb8 36 bool just_joined = true; //used to determine if this is the first time through the loop
Brandond200 10:2eb7b1614bb8 37 uint8_t data[MAX_DATA_LENGTH] = {0}; //data that will be transmitted
Brandond200 10:2eb7b1614bb8 38 uint8_t dataLength = 0; //length of data that will be transmitted
Brandond200 10:2eb7b1614bb8 39
Brandond200 10:2eb7b1614bb8 40 //application variables
Brandond200 10:2eb7b1614bb8 41 bool button_pressed = false; //last state of the button
Brandond200 12:67fcab1e915a 42 bool alarmThresholdTriggered = false; //last state on the alarm
Brandond200 10:2eb7b1614bb8 43 uint8_t flashCount = 0; //how many more times to flash the LED
Brandond200 10:2eb7b1614bb8 44
Brandond200 10:2eb7b1614bb8 45 //timers
Brandond200 10:2eb7b1614bb8 46 TimerEvent_t txTimer; //timer so schedule heartbeat transmissions
Brandond200 10:2eb7b1614bb8 47 TimerEvent_t ledTimer; //timer to blink LED
Brandond200 8:fb8b53c490e1 48
sergei11522 7:d7cdd6804277 49
sergei11522 7:d7cdd6804277 50 void onDownlinkConfirmation(){
Brandond200 10:2eb7b1614bb8 51 flashLED(BLINK_COUNT_DOWNLINK_CONFIRMATION);
sergei11522 7:d7cdd6804277 52 }
sergei11522 7:d7cdd6804277 53
sergei11522 7:d7cdd6804277 54 void start(){
Brandond200 8:fb8b53c490e1 55 //any initialization here
Brandond200 10:2eb7b1614bb8 56
Brandond200 10:2eb7b1614bb8 57 //initilize LED flash timer
Brandond200 8:fb8b53c490e1 58 TimerInit(&ledTimer, flashLEDCallback);
Brandond200 10:2eb7b1614bb8 59 TimerSetValue( &ledTimer, TWO_HUNDRED_MILLISECONDS );
sergei11522 7:d7cdd6804277 60 }
sergei11522 7:d7cdd6804277 61
sergei11522 7:d7cdd6804277 62 //this loop will start to be called as soon as the device successfully joins the network
sergei11522 7:d7cdd6804277 63 void loop(){
sergei11522 7:d7cdd6804277 64 //the loop is called as soon as the device joins. Flash the led 10 times when this happens
sergei11522 7:d7cdd6804277 65 if (just_joined){
sergei11522 7:d7cdd6804277 66 just_joined = false;
Brandond200 10:2eb7b1614bb8 67 flashLED(BLINK_COUNT_JOINED);
sergei11522 7:d7cdd6804277 68 }
sergei11522 7:d7cdd6804277 69
Brandond200 12:67fcab1e915a 70 //check if button was just pressed
Brandond200 12:67fcab1e915a 71 checkButton();
Brandond200 15:07f7e9ce7e21 72
Brandond200 12:67fcab1e915a 73 }
Brandond200 12:67fcab1e915a 74
Brandond200 12:67fcab1e915a 75 void checkButton(void){
sergei11522 7:d7cdd6804277 76 //button is pressed. Trigger once so that if we hold the button this block doesnt continously execute
Brandond200 10:2eb7b1614bb8 77 if (button == 1 && button_pressed == false){
sergei11522 7:d7cdd6804277 78 button_pressed = true;
Brandond200 10:2eb7b1614bb8 79 flashLED(BLINK_COUNT_EVENT_TRANSMIT);
Brandond200 10:2eb7b1614bb8 80 transmitData(rotary.read_u16());
sergei11522 7:d7cdd6804277 81 } else if (button == 0){
sergei11522 7:d7cdd6804277 82 button_pressed = false;
sergei11522 7:d7cdd6804277 83 }
Brandond200 12:67fcab1e915a 84 }
Brandond200 12:67fcab1e915a 85
Brandond200 12:67fcab1e915a 86 //check if value passed in should trigger the alarm, if so, transmit
Brandond200 12:67fcab1e915a 87 void checkAlarm(void){
Brandond200 12:67fcab1e915a 88 uint16_t position = rotary.read_u16();
Brandond200 12:67fcab1e915a 89 //check if should trigger alarm
Brandond200 15:07f7e9ce7e21 90 if(position / BYTE_TO_PERCENT > (ALARM_THRESHOLD + 1)){
Brandond200 12:67fcab1e915a 91 //if the alarm has not already been triggered
Brandond200 12:67fcab1e915a 92 if(!alarmThresholdTriggered){
Brandond200 12:67fcab1e915a 93 alarmThresholdTriggered = true;//set the alarm to triggered
Brandond200 12:67fcab1e915a 94 flashLED(BLINK_COUNT_EVENT_TRANSMIT);
Brandond200 12:67fcab1e915a 95 transmitData(position);//transmit data
Brandond200 12:67fcab1e915a 96 }
Brandond200 12:67fcab1e915a 97 }
Brandond200 15:07f7e9ce7e21 98 else if(position / BYTE_TO_PERCENT < (ALARM_THRESHOLD - 1)){
Brandond200 15:07f7e9ce7e21 99 if(alarmThresholdTriggered){
Brandond200 15:07f7e9ce7e21 100 //alarm just changed state to not triggered
Brandond200 15:07f7e9ce7e21 101 flashLED(BLINK_COUNT_EVENT_TRANSMIT);
Brandond200 15:07f7e9ce7e21 102 transmitData(position);//transmit data
Brandond200 15:07f7e9ce7e21 103 alarmThresholdTriggered = false;
Brandond200 15:07f7e9ce7e21 104 }
Brandond200 12:67fcab1e915a 105 }
Brandond200 12:67fcab1e915a 106 }
Brandond200 12:67fcab1e915a 107
Brandond200 12:67fcab1e915a 108 //start heartbeat timer. pass in how often in seconds it should transmit
Brandond200 12:67fcab1e915a 109 void startHeartbeat(uint8_t time){
Brandond200 12:67fcab1e915a 110 TimerInit(&txTimer, timerCallback);
Brandond200 12:67fcab1e915a 111 TimerSetValue( &txTimer, time * 1000 * 1000);
Brandond200 12:67fcab1e915a 112 TimerStart(&txTimer);
Brandond200 10:2eb7b1614bb8 113 }
Brandond200 10:2eb7b1614bb8 114
Brandond200 10:2eb7b1614bb8 115 //Transmit rotory position and alarm status
Brandond200 12:67fcab1e915a 116 void transmitData(uint16_t position){
Brandond200 11:88afd7663dc4 117 addRotaryData(position); //add the rotary position to data
Brandond200 15:07f7e9ce7e21 118
Brandond200 11:88afd7663dc4 119 setDataToSend(data, dataLength); //set data to be transmitted
Brandond200 11:88afd7663dc4 120 sendLoraTransmission(); //queue transmission
Brandond200 11:88afd7663dc4 121 dataLength = 0; //reset data length so new data starts back at begining
Brandond200 10:2eb7b1614bb8 122 }
Brandond200 10:2eb7b1614bb8 123
Brandond200 10:2eb7b1614bb8 124 //read the rotory position and add to data to transmit
Brandond200 10:2eb7b1614bb8 125 void addRotaryData(uint16_t positionArg){
Brandond200 10:2eb7b1614bb8 126 uint16_t position = positionArg / (BYTE_TO_PERCENT / 100);
Brandond200 10:2eb7b1614bb8 127
Brandond200 10:2eb7b1614bb8 128 data[dataLength++] = ROTATION_DATA_CHANNEL;
Brandond200 10:2eb7b1614bb8 129 data[dataLength++] = ROTATION_DATA_TYPE;
Brandond200 11:88afd7663dc4 130 data[dataLength++] = position >> 8; //add the upper byte of the rotory position
Brandond200 10:2eb7b1614bb8 131 data[dataLength++] = position & 0xFF; //add the lower byte of the rotory position
Brandond200 10:2eb7b1614bb8 132 }
Brandond200 10:2eb7b1614bb8 133
Brandond200 10:2eb7b1614bb8 134 //read the rotory position and add alarm status to data to transmit
Brandond200 10:2eb7b1614bb8 135 void addAlarmData(uint16_t positionArg){
Brandond200 10:2eb7b1614bb8 136 int16_t position = positionArg / BYTE_TO_PERCENT;
Brandond200 10:2eb7b1614bb8 137
Brandond200 10:2eb7b1614bb8 138 data[dataLength++] = ALARM_DATA_CHANNEL;
Brandond200 10:2eb7b1614bb8 139 data[dataLength++] = ALARM_DATA_TYPE;
Brandond200 15:07f7e9ce7e21 140 data[dataLength++] = (uint8_t)position >= ALARM_THRESHOLD; //add binary for it alarm triggered or not
Brandond200 10:2eb7b1614bb8 141 }
Brandond200 10:2eb7b1614bb8 142
Brandond200 10:2eb7b1614bb8 143 //start flash LED
Brandond200 10:2eb7b1614bb8 144 void flashLED(uint8_t times){
Brandond200 11:88afd7663dc4 145 if(flashCount == 0){ //if it is not currently flashing
Brandond200 13:d2cccfdb615c 146 TimerStart(&ledTimer); //start timer to toggle LED state
Brandond200 11:88afd7663dc4 147 }
Brandond200 11:88afd7663dc4 148 flashCount += times; //set the number of times to flash
Brandond200 15:07f7e9ce7e21 149 //make sure it is not set to high
Brandond200 15:07f7e9ce7e21 150 if(flashCount > 10){
Brandond200 15:07f7e9ce7e21 151 flashCount = 10;
Brandond200 15:07f7e9ce7e21 152 }
Brandond200 13:d2cccfdb615c 153 led.write(1); //turn on LED
Brandond200 10:2eb7b1614bb8 154 }
Brandond200 10:2eb7b1614bb8 155
Brandond200 10:2eb7b1614bb8 156 //callback to change state of LED for blinking
Brandond200 10:2eb7b1614bb8 157 void flashLEDCallback(){
Brandond200 10:2eb7b1614bb8 158 //if the LED is on, turn it off
Brandond200 10:2eb7b1614bb8 159 if(led.read() == 1){
Brandond200 10:2eb7b1614bb8 160 led.write(0);
Brandond200 10:2eb7b1614bb8 161 flashCount--;
Brandond200 10:2eb7b1614bb8 162 //if done flashing turn off the timer
Brandond200 10:2eb7b1614bb8 163 if(flashCount <= 0){
Brandond200 10:2eb7b1614bb8 164 TimerStop(&ledTimer);
Brandond200 10:2eb7b1614bb8 165 }
Brandond200 10:2eb7b1614bb8 166 }
Brandond200 10:2eb7b1614bb8 167 //if LED is off, turn it on
Brandond200 10:2eb7b1614bb8 168 else{
Brandond200 10:2eb7b1614bb8 169 led.write(1);
Brandond200 10:2eb7b1614bb8 170 }
Brandond200 10:2eb7b1614bb8 171 }
Brandond200 10:2eb7b1614bb8 172
Brandond200 12:67fcab1e915a 173
Brandond200 12:67fcab1e915a 174 //callback for transmission timer
Brandond200 12:67fcab1e915a 175 void timerCallback(){
Brandond200 12:67fcab1e915a 176 flashLED(BLINK_COUNT_TIMER_TRANSMIT);
Brandond200 12:67fcab1e915a 177 transmitData(rotary.read_u16());
Brandond200 8:fb8b53c490e1 178 }