main.cpp

00001 #include "mbed.h"
00002 #include "MMA8451Q.h"
00003 #include "TextLCD.h"
00004 #define MMA8451_I2C_ADDRESS (0x1d<<1)
00005 
00006 TextLCD lcd(D2, D3, D4, D5, D6, D7); // LCD PIN => RS, EN, Data4, Data5, Data6, Data7
00007 
00008 PinName const SDA = PTE25; //I2C Pins for KL25Z
00009 PinName const SCL = PTE24; //I2C Pins for KL25Z
00010 
00011 MMA8451Q acc(SDA, SCL, MMA8451_I2C_ADDRESS); //Initilize MMA8451Q Accelerometer 
00012 
00013 int main(void)
00014 {
00015     lcd.cls(); // Clear LCD
00016     lcd.locate(0,0); // cursor on Col=0, Raw=0
00017     lcd.printf("Experiment - 8"); // print startup message on LCD first Raw
00018     lcd.locate(0,1); // cursor on Col=0, Raw=1
00019     lcd.printf("MMA8451 With LCD"); // print startup message on LCD second Raw
00020     wait(3.0); // wait 3 second to show startup message
00021     while (1) 
00022     {
00023         float x, y, z;
00024         x = acc.getAccX(); // get Acceleration on X
00025         y = acc.getAccY(); // get Acceleration on Y
00026         z = acc.getAccZ(); // get Acceleration on Z
00027         lcd.cls(); // Clear LCD
00028         lcd.locate(0,0); // cursor on Col=0, Raw=0
00029         lcd.printf("X:%0.2f",x); // print value of X in first line of LCD
00030         lcd.locate(8,0); // cursor on Col=8, Raw=0
00031         lcd.printf("Y:%0.2f",y); // print value of Y in first line of LCD
00032         lcd.locate(4,1); // cursor on Col=5, Raw=1
00033         lcd.printf("Z:%0.2f",z); // print value of Z in first line of LCD
00034         wait(0.1); // Wait for 100ms to visulize reading on LCD
00035         
00036     }
00037 }