Vishal Bharam
Test of the accelerometer, digital I/O, on-board LCD screen. Looking at vector product of the x-y components of the accelerometer. Works pretty well. Still rough, program wise - sc 140710
Dependencies: MMA8451Q SLCD mbed
Fork of
ACC_LCD_341_MID
by 
Stanley Cohen
Revision 0:203b4129a213, committed 2014-09-25
- Comitter:
- scohennm
- Date:
- Thu Sep 25 15:53:53 2014 +0000
- Child:
- 1:9340a340e588
- Commit message:
- Midterm test program for publishing practice SSD 341 AY2014-2015 NMHU
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/MMA8451Q.lib Thu Sep 25 15:53:53 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/emilmont/code/MMA8451Q/#c4d879a39775
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SLCD.lib Thu Sep 25 15:53:53 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/Sissors/code/SLCD/#ef2b3b7f1b01
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/acc_341.cpp Thu Sep 25 15:53:53 2014 +0000
@@ -0,0 +1,73 @@
+#include "mbed.h"
+#include "MMA8451Q.h"
+#include "SLCD.h"
+
+/*
+Test of the accelerometer, digital I/O, on-board LCD screen.
+ Looing at vector product of the x-y components of the accelerometer.
+ Works pretty well. Still rough, program wise - sc 140710
+ */
+
+#define BLINKTIME 0.700
+#define DATATIME 0.200
+
+#define PROGNAME "ACCLCD341\r/n"
+
+#define PRINTDBUG
+
+#if defined (TARGET_KL25Z) || defined (TARGET_KL46Z)
+ PinName const SDA = PTE25;
+ PinName const SCL = PTE24;
+#elif defined (TARGET_KL05Z)
+ PinName const SDA = PTB4;
+ PinName const SCL = PTB3;
+#else
+ #error TARGET NOT DEFINED
+#endif
+
+#define MMA8451_I2C_ADDRESS (0x1d<<1)
+
+SLCD slcd; //define LCD display
+
+MMA8451Q acc(SDA, SCL, MMA8451_I2C_ADDRESS);
+Serial pc(USBTX, USBRX);
+
+
+
+void LCDMess(char *lMess, float dWait){
+ slcd.Home();
+ slcd.clear();
+ slcd.printf(lMess);
+ wait(dWait);
+}
+
+
+int main() {
+ float xAcc;
+ float yAcc;
+ float vector;
+ char lcdData[10]; //buffer needs places dor decimal pt and colon
+
+#ifdef PRINTDBUG
+ pc.printf(PROGNAME);
+#endif
+// main loop forever
+ while(true) {
+
+//Get accelerometer data - tilt angles minus offset for zero mark.
+ xAcc = abs(acc.getAccX());
+ yAcc = abs(acc.getAccY());
+ // Calulate vector sum of x and y reading.
+ vector = sqrt(pow(xAcc,2) + pow(yAcc,2));
+
+
+#ifdef PRINTDBUG
+ pc.printf("vector = %f\r\n", vector);
+#endif
+
+ sprintf (lcdData,"%4.3f",vector);
+ LCDMess(lcdData, DATATIME);
+// Wait then do the whole thing again.
+ wait(DATATIME);
+ }
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Thu Sep 25 15:53:53 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/04dd9b1680ae \ No newline at end of file