jim hamblen / Mbed 2 deprecated app-board-Bubble-Level

This demo uses the application board’s three axis accelerometer and the LCD display working in graphics mode to build an electronic version of a bubble level.

Dependencies:   C12832_lcd MMA7660 mbed

Fork of MMA7660_HelloWorld by Erik -

main.cpp@1:876f52a697c1, 2013-09-22 (annotated)

Committer:
4180_1
Date:
Sun Sep 22 17:44:42 2013 +0000
Revision:
1:876f52a697c1
Parent:
0:bd0546063b0a 
ver 1.0 see https://mbed.org/users/4180_1/notebook/mbed-application-board-hands-on-demos/

Who changed what in which revision?

UserRevisionLine numberNew contents of line
4180_1 1:876f52a697c1 1 //Uses x & y acceleration to simulate a bubble level
4180_1 1:876f52a697c1 2 //on the application board LCD display
Sissors 0:bd0546063b0a 3 #include "mbed.h"
Sissors 0:bd0546063b0a 4 #include "MMA7660.h"
4180_1 1:876f52a697c1 5 #include "C12832_lcd.h"
Sissors 0:bd0546063b0a 6
4180_1 1:876f52a697c1 7 C12832_LCD lcd; //On board LCD display
4180_1 1:876f52a697c1 8 MMA7660 MMA(p28, p27); //I2C Accelerometer
4180_1 1:876f52a697c1 9 DigitalOut connectionLed(LED1);//Accel OK LED
Sissors 0:bd0546063b0a 10
4180_1 1:876f52a697c1 11 int main()
4180_1 1:876f52a697c1 12 {
4180_1 1:876f52a697c1 13 int x=0,y=0;
4180_1 1:876f52a697c1 14 lcd.cls(); //clear LCD screen
Sissors 0:bd0546063b0a 15 if (MMA.testConnection())
4180_1 1:876f52a697c1 16 connectionLed = 1; //Accelerometer init OK
Sissors 0:bd0546063b0a 17 while(1) {
4180_1 1:876f52a697c1 18 //read X,Y +/-Gs and scale for #display pixels
4180_1 1:876f52a697c1 19 x = (x + MMA.x() * 32.0)/2.0;
4180_1 1:876f52a697c1 20 y = (y -(MMA.y() * 16.0))/2.0;
4180_1 1:876f52a697c1 21 lcd.fillcircle(x+63, y+15, 3, 1); //draw bubble
4180_1 1:876f52a697c1 22 lcd.circle(63, 15, 8, 1);
4180_1 1:876f52a697c1 23 wait(.1); //time delay
4180_1 1:876f52a697c1 24 lcd.fillcircle(x+63, y+15, 3, 0); //erase bubble
Sissors 0:bd0546063b0a 25 }
Sissors 0:bd0546063b0a 26
Sissors 0:bd0546063b0a 27 }