Diff: main.cpp

Revision:

0:e8b157a824e7

Child:

1:477ed4a96308

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon May 11 20:52:07 2015 +0000
@@ -0,0 +1,274 @@
+#include "mbed.h"
+#include "N5110.h"
+#include "BMP180.h"
+#include "beep.h"
+
+Serial serial(USBTX,USBRX);
+BMP180 bmp180(p28,p27);              // SDA, SCL
+BusOut leds(LED1, LED2, LED3, LED4); // Debug - Error
+Beep buzzer(p21);                    // Buzzer Pin
+N5110 lcd(p7,p8,p9,p10,p11,p13,p26); // VCC,SCE,RST,D/C,MOSI,SCLK,LED 
+InterruptIn unitChanger(p16);        // unit changer button
+InterruptIn brightnessButton(p15);   // sleep/brightness button
+AnalogIn battery(p17);               // Battrey indicator
+DigitalOut led2(p24);                // LED 1
+DigitalOut led1(p23);                // LED 2
+DigitalOut sce(p8);                  // SCE
+SPI spi(p11,NC,p13);                 // SPI
+DigitalOut pwr(p7);                  // PWR
+DigitalOut dc(p10);                  // DC
+PwmOut led(p26);                     // LED
+
+Measurement measurement;             // Store the measurement values
+Ticker message;                      // Alert message
+Ticker valueReading;                 // Each 60 sec a reading is taken
+LocalFileSystem Local("local");      // Store the data
+
+void celsius(); // Celsius function
+void eraseRAM(); // Clear the RAM
+void displayOff(); // Turn off the display
+void displayOn(); // Turn on the display
+void ISR(); // Serial data
+void battreyIndicator(float); // Indicate the battrey lfie
+void registerTime(); // Time
+void setBrightness(float brightness); // Init the brightness
+void fahrenheit(); // Fahrenheit function
+void dataWite(float Measurement);// register data
+void error(); // indicate error 
+void stop();  // stop the opreation
+void timeChange(); // intreeupt the time
+
+// Those are flags for the functions
+int registerTimeFlag = 0;
+int unitChangerFlag = 0;
+int celsiusFlag =0;
+int brightnessButtonFlag =0;
+
+char buffer[30]; // creat a charracter
+char xString[16]; 
+
+
+void delayOption() // Calls the Celsius and the Fahrenheit function, however they are delayed by 60 sec
+{
+    fahrenheit();
+    celsius();
+    lcd.refresh();
+}
+
+void unitChangerProperties() // When the button is pressed value = 0 which changes it to fahrenheit and other way around
+{
+
+    if(unitChangerFlag == 1) {
+        unitChangerFlag = 0;
+        fahrenheit();
+    } else { // after the click it returns it to the beggning
+        unitChangerFlag = 1;
+        celsius();
+    }
+}
+
+void brightnessSleep() // Gives the button 6 clicks and then return it to the beginning so it can be clicked again
+{
+    if(brightnessButtonFlag == 6) {
+        brightnessButtonFlag = 5;
+    } else if (brightnessButtonFlag == 5) {
+        brightnessButtonFlag =4;
+    } else if (brightnessButtonFlag ==4) {
+        brightnessButtonFlag =3;
+    } else if (brightnessButtonFlag==3) {
+        brightnessButtonFlag=2;
+    } else if (brightnessButtonFlag ==2) {
+        brightnessButtonFlag =1;
+    } else if (brightnessButtonFlag ==1) {
+        brightnessButtonFlag =0;
+    } else {
+        brightnessButtonFlag =6;
+    }
+}
+
+void buzzerMessage() // When the measurement.temperatureC reaches 27, the following buzz and message will appear
+{
+    if ( measurement.temperatureC >= 27 ) {
+        buzzer.beep(1000,0.3);
+        lcd.printString("WARNING!", 15,15);
+        lcd.refresh();
+    } else {
+        lcd.printString("          ", 15,15);
+        lcd.refresh();
+    }
+}
+
+int main()
+{
+    bmp180.init();        // initialise the sensor
+    lcd.init();  // first need to initialise display
+    message.attach(&buzzerMessage,0.5); // the message function keep checking every 0.5 seconds
+    valueReading.attach(&delayOption, 60.0); // the reading is delayed by 60 second, so every minute the reading will be taken
+    battreyIndicator(battery); // call the battrey indicator function
+    unitChanger.rise(&unitChangerProperties); // calls the unit changer button function.
+    brightnessButton.rise(&brightnessSleep); // calls the sleep/brightness button function.
+    delayOption(); // calls the delay function
+    lcd.refresh(); // refresh the LCD.
+
+    while(1) {
+
+        if(brightnessButtonFlag == 6) { // starts / and after the last click it return to here and wakes up the screen
+            displayOn();
+            lcd.setBrightness(0.2);
+            lcd.refresh();
+        } else if (brightnessButtonFlag == 5) { // the first click increase brightness by 20%
+            lcd.setBrightness(0.4);
+        } else if (brightnessButtonFlag ==4) {
+            lcd.setBrightness(0.6);
+        } else if (brightnessButtonFlag==3) {
+            lcd.setBrightness(0.8);
+        } else if (brightnessButtonFlag==2) {
+            lcd.setBrightness (1);
+        } else if (brightnessButtonFlag==1) { // Turn off the LCD and put it to sleep, it calls the function which are written below
+            displayOff();
+            lcd.clear();
+            buzzer.nobeep();
+            sleep();
+        }
+    }
+}
+
+void celsius() // The function for the Celsius
+{
+    char buffer[14];  // each character is 6 pixels wide, screen is 84 pixels (84/6 = 14) // so can display a string of a maximum 14 characters in length // or create formatted strings - ensure they aren't more than 14 characters long
+
+    measurement = bmp180.readValues(); // read values (T in Celsius and P in mb) and print over serial port
+    //wait(0.1);  // short delau until next reading
+
+    int length = sprintf(buffer,"T = %.2f C",measurement.temperatureC); // print formatted data to buffer // it is important the format specifier ensures the length will fit in the buffer
+    if (length <= 14)  // if string will fit on display
+        lcd.printString(buffer,0,1);           // display on screen
+
+    length = sprintf(buffer,"P = %.2f mb",measurement.pressure);
+    if (length <= 14)
+        lcd.printString(buffer,0,2);
+    lcd.refresh();
+}
+
+void fahrenheit() // The function for the fahrenheit
+{
+    char buffer[14];  // each character is 6 pixels wide, screen is 84 pixels (84/6 = 14) // so can display a string of a maximum 14 characters in length // or create formatted strings - ensure they aren't more than 14 characters long
+
+    measurement = bmp180.readValues(); // read values (T in fahrenheit and P in mb) and print over serial port  //serial.printf("T = %.2f F P = %.2f mb\n",measurement.temperature,measurement.pressure);
+    //wait(0.1);  // short delau until next reading
+
+    int length = sprintf(buffer,"T = %.2f F",measurement.temperatureF); // print formatted data to buffer // it is important the format specifier ensures the length will fit in the buffer
+    if (length <= 14)  // if string will fit on display
+        lcd.printString(buffer,0,1);           // display on screen
+
+    length = sprintf(buffer,"P = %.2f mb",measurement.pressure);
+    if (length <= 14)
+        lcd.printString(buffer,0,2);
+    lcd.refresh();
+}
+
+void eraseRAM() // Clear the RAM
+{
+    int i;
+    sce.write(0);
+    for(i =0; i < 504; i++) {
+        spi.write(0x00);
+    }
+
+}
+
+void displayOn() // Turn on the display
+{
+    setBrightness(1.0); // 100%
+    pwr.write(1);
+
+}
+
+void displayOff() // Turn off the display
+{
+    setBrightness(0.0); // 0%
+    eraseRAM(); // calls the function
+
+}
+
+void setBrightness(float brightness) // set the brightness
+{
+    if(brightness < 0.0) {
+        brightness = 0.0;
+    }
+    if (brightness > 1.0) {
+        brightness = 1.0;
+    }
+    led.write(brightness);
+}
+
+void battreyIndicator(float voltageIn) // indicate the battrey life
+{
+    if (voltageIn >=2.5) { // if the voltage equal or larger than 2.5V the green LED will light
+        led2 =0;
+        led1 =1;
+    }
+    if (voltageIn <=2.5) { // if the voltage equal or smaller than 2.5V the red LED will light
+        led1= 0;
+        led2= 1;
+    }
+}
+
+
+void ISR()
+{
+serial.gets(xString,16);
+registerTimeFlag = 1;
+}
+// Writing
+void dataWrite(float Measurement)
+{
+
+char buffer[30]; // store time 
+time_t seconds = time(NULL); // get time
+// time and date
+strftime(buffer, 30 , "%X %D", localtime(&seconds));
+
+FILE *fp = fopen("/local/log.csv", "a"); // open log
+// Create file
+fprintf(fp,"%f,%s\n",measurement.temperatureC, buffer); // print string to file
+fclose(fp); // Close it
+}
+
+// Incase of error
+void error(int code)
+{
+while(1) {
+leds = 0;
+wait(0.25);
+leds = code;
+wait(0.25);
+}
+}
+
+//  register Temperature
+void stop()
+{
+serial.printf("T = %f C\n",measurement.temperatureC); // Show temp value
+dataWrite(measurement.temperatureC); // write temp value
+}
+
+void registerTime()
+{
+// register the time for debugging purposes
+serial.printf("set_time - %s",xString);
+// String -> integer
+int time = atoi(xString);
+set_time(time);
+}
+
+// Time
+void timeChange()
+{
+char buffer[30]; // store time 
+time_t seconds = time(NULL); // get current time
+// format to string
+strftime(buffer, 30 , "%X %D", localtime(&seconds));
+// serial
+serial.printf("Time = %s\n",buffer);
+}
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