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
Revision 3:047cf7350900, committed 2014-09-29
- Comitter:
- vbharam
- Date:
- Mon Sep 29 04:01:28 2014 +0000
- Parent:
- 2:6003ed409def
- Commit message:
- 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
Changed in this revision
acc_341.cpp | Show diff for this revision Revisions of this file |
acc_341_VB.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/acc_341.cpp Thu Sep 25 23:45:35 2014 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,77 +0,0 @@ -#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 DATATIME 0.200 - -#define PROGNAME "ACCLCD341\r/n" - -#define PRINTDBUG -// -#if defined (TARGET_KL25Z) || defined (TARGET_KL46Z) - PinName const SDA = PTE25; // Data pins for the accelerometer/magnetometer. - PinName const SCL = PTE24; // DO NOT CHANGE -#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); - -float sqrt_newt(float argument) { - return (sqrt(argument)); -} - - -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_newt(pow(xAcc,2) + pow(yAcc,2)); - - -#ifdef PRINTDBUG - pc.printf("xAcc = %f\r\n", xAcc); - pc.printf("yAcc = %f\r\n", yAcc); - 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/acc_341_VB.cpp Mon Sep 29 04:01:28 2014 +0000 @@ -0,0 +1,79 @@ +#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 + + Author: Vishal Bharam + Date: 9/29/2014 + */ + +#define DATATIME 0.150 +#define PROGNAME "ACCLCD341VB\r/n" +#define PRINTDBUG + + +#if defined (TARGET_KL25Z) || defined (TARGET_KL46Z) + PinName const SDA = PTE25; // Data pins for the accelerometer/magnetometer. + PinName const SCL = PTE24; // DO NOT CHANGE +#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); + +float sqrt_newt(float argument) { + return (sqrt(argument)); +} + + +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_newt(pow(xAcc,2) + pow(yAcc,2)); + + +#ifdef PRINTDBUG + pc.printf("xAcc = %f\r\n", xAcc); + pc.printf("yAcc = %f\r\n", yAcc); + 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