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Fengrui Zuo, Benjamin Leverett, Rahil Ajani, Kombundit Chitranuwatkul
Dependencies: mbed mbed-rtos 4DGL-uLCD-SE SDFileSystem ATParser
main.cpp
- Committer:
- chenchen2020
- Date:
- 2020-04-24
- Revision:
- 2:f65d4206b47b
- Parent:
- 1:8eb0ee57df9f
- Child:
- 3:2a4bee05d0c1
File content as of revision 2:f65d4206b47b:
#include "mbed.h" #include "rtos.h" #include "ATParser.h" #include "uLCD_4DGL.h" #include "SDFileSystem.h" #include "Speaker.h" //#include "wave_player.h" #include <string> #include <iostream> using namespace std; //General setups DigitalOut cmdMode(p18); Serial pc(USBTX, USBRX); BufferedSerial ble(p13,p14); DigitalOut cmdstuff(p18); DigitalOut greenLED(p24); DigitalOut yellowLED(p25); DigitalOut redLED(p26); uLCD_4DGL uLCD(p28,p27,p30); SDFileSystem sd(p5, p6, p7, p8, "sd"); //Speaker mySpeaker(p21); //AT command data handlers bool datalogged = 0; char delimiter[] = "\r\n"; int buffer_size = 256; int timeout = 100; bool debug = false; ATParser at(ble, delimiter, buffer_size, timeout, debug); char buffer[10]; volatile int risk_level = 0; //RTOS Mutex Lock Mutex mutex_lock; //Global Data points and arrays int averageCount = 0; volatile int RSSI_array[15]; //This portion of the code handles RSSI readings int calculate_average(volatile int *input, int size) { int average; for(int i = 0; i< size; i++) { average = average + input[i]; } average = average/size; return average; } void parse_RSSI() { mutex_lock.lock(); at.send("AT+BLEGETRSSI") && at.read(buffer, 10); if(buffer[0] == '-') { datalogged = 1; pc.printf("RSSI: "); pc.putc(buffer[1]); pc.putc(buffer[2]); pc.printf("\n"); int digit1 = buffer[1] - 48; int digit2 = buffer[2] - 48; int total = 10*digit1 + digit2; if (averageCount <= 15) { RSSI_array[averageCount] = total; } averageCount++; if(averageCount > 15 && buffer[0] == '-') { averageCount = 0; int average = calculate_average(RSSI_array, 15); if(average < 55) { risk_level = 3; } else if(average > 55 && average < 70) { risk_level = 2; } else if(average > 70 && average < 90) { risk_level = 1; } else { risk_level = 0; } } pc.printf("Risk level: "); pc.printf("%i\n", risk_level); } else { pc.printf("Disconnected\n"); datalogged = 0; } mutex_lock.unlock(); } //This portion of the code handles peripherals /* void speaker_alarm() { while(1){ if(risk_level >= 2 && datalogged){ mySpeaker.PlayNote(969.0, 0.5, 1.0); mySpeaker.PlayNote(800.0, 0.5, 1.0); }else{ mySpeaker.PlayNote(0.0, 0.0, 0.0); } } } */ void logging_SD_card() { } void blink_leds() { while(1){ if(risk_level <= 1 && datalogged){ greenLED = 1; redLED = 0; yellowLED = 0; }else if(risk_level == 2 && datalogged){ yellowLED = 1; greenLED = 0; redLED = 0; }else if(risk_level == 3 && datalogged){ redLED = 1; yellowLED = 0; greenLED = 0; }else{ redLED = 0; yellowLED = 0; greenLED = 0; } } } void display_ulcd() { while(1){ mutex_lock.lock(); if(risk_level <= 1 && datalogged){ uLCD.background_color(BLACK); uLCD.text_string("Safe", 1, 4, FONT_7X8, WHITE); }else if(risk_level == 2 && datalogged){ uLCD.background_color(BLACK); uLCD.text_string("Cautious 2", 1, 4, FONT_7X8, WHITE); }else if(risk_level == 3 && datalogged){ uLCD.background_color(BLACK); uLCD.text_string("Hazardous", 1, 4, FONT_7X8, WHITE); }else{ uLCD.background_color(BLACK); uLCD.text_string("ok", 1, 4, FONT_7X8, WHITE); } mutex_lock.unlock(); } } int main() { cmdstuff = 1; at.send("AT") && at.recv("OK"); at.send("AT+AB ChangeDefaultBaud [9600]", 3) && at.recv("OK"); pc.baud(9600); ble.baud(9600); //Thread SD_Thread(); Thread ULCD_Thread(display_ulcd); Thread LED_Thread(blink_leds); //Thread Speaker_Thread(speaker_alarm); while(1) { parse_RSSI(); } }