/*
This implementation specific to Maple Mini and used with a NOKIA 5110 Craphic LCD
Placed in the Public Domain by author: m. ray burnette: http://hackster.io/RayBurne
Wikipedia: highest 1085.7hPa lowest non-tornadic 870hPa Delta == 215.7 hPa
Compiled using Arduino 1.6.0rc1
Sketch uses 19,212 bytes (17%) of program storage space. Maximum is 108,000 bytes.
Global variables use 2,800 bytes of dynamic memory.
*/

#include <Streaming.h> // http://arduiniana.org/libraries/streaming/ Documents\Arduino\libraries\Streaming (legacy)
#include <Wire.h> // I2C \Documents\Arduino\hardware\STM32\STM32F1XX\libraries\Wire (legacy)
#include "BMP085.h" // #include "I2Cdev.h" is pulled in also

//next line generic - #define LED_PIN BOARD_LED_PIN // defined for LeafLabs Maple & Maple Mini ... Real Arduinos it's PIN 13
#define LED_PIN PC13 // defined for LeafLabs Maple & Maple Mini ... Real Arduinos it's PIN 13

#define DIAGS false // set to "true" to echo diagnostic to SerialUSB - renamed to Serial

/* Nokia GLCD SOFTWARE SPI (using Maple Mini hardware SPI 2 Pins)
//------MapleMini-----//-------Notes------------//---Nokia--- */
#define PIN_SCE PB12 // CE (Active High) // pin 2
#define PIN_RESET PB13 // Reset (Active Lo) // pin 1
#define PIN_DC PB14 // Data==1 Command==0 // pin 3
#define PIN_SDIN PB15 // MOSI/DIN // pin 4
#define PIN_SCLK PA8 // CLK/clock // pin 5

#define LCD_C LOW
#define LCD_D HIGH
#define LCD_X 84
#define LCD_Y 48

// global GLCD variables
byte nRow; // line count (0-5 for NOKIA LCD = 6 lines)
byte nColumn; // character count (0-11 for NOKIA LCD= 12 chars)
byte NOKIAcontrast = 0x99; // LCD initialization contrast values B0 thru BF <----------originally 0XBC
byte error, address = 77; // I2C scanner
const byte ContrastPin = 8; // D8 low activates the Contrast adjustment <- remove this line - from an old program
const int BAUD = 9600; // any standard serial value: 300 - 115200 (not used for SerialUSB)
int hPa10, Fah10; // used for Nokia LCD integer to character - faux decimal place
int localCorrect = 3380; // +/- hPa*100 to correct for local altitude: 100X delta: 3380== Briscoe Field, Ga
float temperature;
float pressure; // How many hPa in 1 mm Hg? The answer is 1.3332239
float inHg;
float mmhg_conversion = 3386.388140071641; // convert hPa to inches Hg
float altitude;
int32_t lastMicros;
bool blinkState = false;

// Various static Screen messages
char* BlankLine[] PROGMEM = {" "}; // Nokia 12 x 6 (84 * 48)
// Screen line.... 012345678901 == 12 characters out of 72 char screen == 6 lines
char* msg0[] PROGMEM = {"DEMO BMP180 (C)2014 by M. Burnette PUBLIC DOMAIN Ver 20141231"}; // 72 characters == full screen
char* msg1[] PROGMEM = {" Open Serial Connection @9600 BAUD and then Press AnyKey"};
char* msg2[] PROGMEM = {"Barometer OK"} ;
char* msg3[] PROGMEM = {"Barometer Failure Correct and try again. "} ;

// create barometer object
BMP085 barometer;

void setup(void)
{
pinMode(PC13, OUTPUT);
pinMode(BOARD_BUTTON_PIN, INPUT);
pinMode(ContrastPin, INPUT);
digitalWrite(ContrastPin, HIGH); // activate internal pullup resistor
if( DIAGS )
{
Serial.begin(BAUD); // Maple SerialUSB .begin() is void... reminder for Serial1, 2, 3
Serial << (F("(c) 2013 - 2014 by M. R. Burnette")) << endl;
Serial << (F("Version 0.20140126")) << endl;
}

// I2C Stuff
Wire.begin(); barometer.initialize();


// Nokia SPI stuff
LcdInitialise(); LcdClear();
LcdString(*msg0);
delay(2000);
LcdClear();
LcdString(*msg1);


// wait with display until user sends a keystroke
if (DIAGS) do {} while (Serial.available() == 0) ;
Wire.beginTransmission(address);
error = Wire.endTransmission();
if (DIAGS) Serial.println(barometer.testConnection() ? "BMP085 connection successful" : "BMP085 connection failed");
if (DIAGS) { Serial.print("Local Pressure Correction Constant: ") ; if (DIAGS) Serial.println(localCorrect); }
LcdClear();
if(barometer.testConnection())
{
LcdString(*msg2);
} else {
LcdString(*msg3);
for( ;; ) {;} // Create an infinite loop (lock-up)
}
}

void loop(void)
{
// blink LED to indicate activity
blinkState = !blinkState;
digitalWrite(LED_PIN, blinkState);
delay(1000);
blinkState = !blinkState;
digitalWrite(LED_PIN, blinkState);
delay(1000);
blinkState = !blinkState;
digitalWrite(LED_PIN, blinkState);
delay(1000);
Serial.println("loop starting");
// request temperature
barometer.setControl(BMP085_MODE_TEMPERATURE);

// wait appropriate time for conversion (4.5ms delay)
lastMicros = micros();
while (micros() - lastMicros < barometer.getMeasureDelayMicroseconds());

// read calibrated temperature value in degrees Celsius
temperature = barometer.getTemperatureC();

// request pressure (3x oversampling mode, high detail, 23.5ms delay)
barometer.setControl(BMP085_MODE_PRESSURE_3);
while (micros() - lastMicros < barometer.getMeasureDelayMicroseconds());

// read calibrated pressure value in Pascals (Pa)
pressure = barometer.getPressure();
pressure += localCorrect;
// calculate absolute altitude in meters based on known pressure
// (may pass a second "sea level pressure" parameter here,
// otherwise uses the standard value of 101325 Pa)
// altitude = barometer.getAltitude(pressure);

// display measured values if appropriate
if (DIAGS)
{
Serial.print("Temp/Pres:\t");
Serial << _FLOAT((temperature * 9.0 / 5.0) + 32.0 , 1) << "F \t";
Serial << _FLOAT((pressure / 100.0) , 2) << " hPa\t";
Serial << _FLOAT((pressure / mmhg_conversion) , 2) << " inHg" << endl;
// Serial << (int (altitude * 6.28084)) << " Ft \r\n" ;
}

// blink LED to indicate activity
blinkState = !blinkState;
digitalWrite(LED_PIN, blinkState);

Serial.print(" just blinked");

// update GLCD
// nRow = 5; nColumn = 0; // last line of Nokia 5110 - some pixels below screen on generic board
nRow = 4; nColumn = 0; // last line of Nokia 5110
gotoXY(nColumn, nRow);
LcdString(*BlankLine);
gotoXY(nColumn, nRow);
LcdString("inHg= ");


// if (isButtonPressed()) // Expand the inHg display by 2 additional spaces
// {
// inHg = float ( pressure * 10.0 / mmhg_conversion) * 100.0 ;
// } else {
inHg = float ( pressure * 10.0 / mmhg_conversion) ;
// }
nDisplay(inHg);

nRow = nRow - 1;
gotoXY(nColumn, nRow);
LcdString(*BlankLine);
gotoXY(nColumn, nRow);
LcdString(" hPa= ");
hPa10 = pressure / 10;
nDisplay(hPa10);

nRow = nRow - 1;
gotoXY(nColumn, nRow);
LcdString(*BlankLine);
gotoXY(nColumn, nRow);
LcdString(" tC= ");
nDisplay(10 * temperature);

nRow = nRow - 1;
gotoXY(nColumn, nRow);
LcdString(*BlankLine);
gotoXY(nColumn, nRow);
LcdString(" tF= ");
Fah10 = 10 * ((temperature * 9.0 / 5.0) + 32.0);
nDisplay(Fah10);

delay(1000); // wait 1 second before repeating...
}