Stanley Cohen / Mbed 2 deprecated magsensor_46_v2

Tests of LCD display, light sensor, magnetometer (raw) and analog input.

Dependencies:   MAG3110 SLCD mbed

magsensorv2.cpp@0:8664d36d4ff3, 2014-08-14 (annotated)

Committer:
scohennm
Date:
Thu Aug 14 17:32:01 2014 +0000
Revision:
0:8664d36d4ff3
This uses the right-hand switch on the KL46Z board to show different data modes. More of a test of how publishing works. The magnetometer and light sensor plus one analog input.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
scohennm 0:8664d36d4ff3 1
scohennm 0:8664d36d4ff3 2 #include "mbed.h"
scohennm 0:8664d36d4ff3 3 #include "MAG3110.h"
scohennm 0:8664d36d4ff3 4 #include "SLCD.h"
scohennm 0:8664d36d4ff3 5 /*
scohennm 0:8664d36d4ff3 6 Test of magnetometer and other sensors on the KL46Z board. Not clear to me at this
scohennm 0:8664d36d4ff3 7 time what the conversion factor of the magnetic field values map to.
scohennm 0:8664d36d4ff3 8 set up state machine to cycle through what is displayed on the LCD screen. Remember
scohennm 0:8664d36d4ff3 9 there are 4 characthers plus a "free" decimal point. - 140721 sc
scohennm 0:8664d36d4ff3 10 */
scohennm 0:8664d36d4ff3 11 #define MESSTIME 0.5
scohennm 0:8664d36d4ff3 12 #define BLINKTIME 500
scohennm 0:8664d36d4ff3 13 #define DATATIME 200
scohennm 0:8664d36d4ff3 14 #define LEDOFF 1
scohennm 0:8664d36d4ff3 15 #define LEDON 0
scohennm 0:8664d36d4ff3 16 #define MESSAGETIME 0.3
scohennm 0:8664d36d4ff3 17 #define LIGHT "LGHT"
scohennm 0:8664d36d4ff3 18 #define MAGX_LBL "MAGX"
scohennm 0:8664d36d4ff3 19 #define MAGY_LBL "MAGY"
scohennm 0:8664d36d4ff3 20 #define BOTIX_LBL "BOTX"
scohennm 0:8664d36d4ff3 21
scohennm 0:8664d36d4ff3 22 // States
scohennm 0:8664d36d4ff3 23 #define NUMSTATES 4
scohennm 0:8664d36d4ff3 24 #define L_STATE 0
scohennm 0:8664d36d4ff3 25 #define MAGX_STATE 1
scohennm 0:8664d36d4ff3 26 #define MAGY_STATE 2
scohennm 0:8664d36d4ff3 27 #define BOTIX_STATE 3
scohennm 0:8664d36d4ff3 28
scohennm 0:8664d36d4ff3 29 #define PROGNAME "MAG v2.0"
scohennm 0:8664d36d4ff3 30 #define LPRNAME "MV2.0"
scohennm 0:8664d36d4ff3 31
scohennm 0:8664d36d4ff3 32 // look at this site for PIN defintions. http://mbed.org/platforms/FRDM-KL46Z/
scohennm 0:8664d36d4ff3 33 // #define PRINTDBUG
scohennm 0:8664d36d4ff3 34
scohennm 0:8664d36d4ff3 35 MAG3110 mag(PTE25, PTE24);
scohennm 0:8664d36d4ff3 36
scohennm 0:8664d36d4ff3 37 SLCD slcd; //define LCD display
scohennm 0:8664d36d4ff3 38 AnalogIn LightSensor(PTE22);
scohennm 0:8664d36d4ff3 39 AnalogIn MaxBotix(PTB0);
scohennm 0:8664d36d4ff3 40 Serial pc(USBTX, USBRX);
scohennm 0:8664d36d4ff3 41 Timer LEDTimer;
scohennm 0:8664d36d4ff3 42 Timer DATATimer;
scohennm 0:8664d36d4ff3 43
scohennm 0:8664d36d4ff3 44 void LCDMess(char *lMess){
scohennm 0:8664d36d4ff3 45 slcd.Home();
scohennm 0:8664d36d4ff3 46 slcd.clear();
scohennm 0:8664d36d4ff3 47 slcd.printf(lMess);
scohennm 0:8664d36d4ff3 48 }
scohennm 0:8664d36d4ff3 49
scohennm 0:8664d36d4ff3 50 void LCDTMess(char *lMess, float Ddelay){
scohennm 0:8664d36d4ff3 51 slcd.Home();
scohennm 0:8664d36d4ff3 52 slcd.clear();
scohennm 0:8664d36d4ff3 53 slcd.printf(lMess);
scohennm 0:8664d36d4ff3 54 wait(Ddelay);
scohennm 0:8664d36d4ff3 55 }
scohennm 0:8664d36d4ff3 56 int main() {
scohennm 0:8664d36d4ff3 57 DigitalOut Rled(LED_RED);
scohennm 0:8664d36d4ff3 58 DigitalOut Gled(LED_GREEN);
scohennm 0:8664d36d4ff3 59 int displayState = 2; // show magy first on LCD
scohennm 0:8664d36d4ff3 60 int LButtonState;
scohennm 0:8664d36d4ff3 61 DigitalIn LftButton(PTC3);
scohennm 0:8664d36d4ff3 62 int ledState = true;
scohennm 0:8664d36d4ff3 63 float lightValue; //Read from ADC connected to ambient light sensor (photo transistor)
scohennm 0:8664d36d4ff3 64 int magX = 0, magY = 0, magZ = 0; // Magnetic field data
scohennm 0:8664d36d4ff3 65 float MaxBValue;
scohennm 0:8664d36d4ff3 66 char lcdData[10];
scohennm 0:8664d36d4ff3 67
scohennm 0:8664d36d4ff3 68 // Do once... equivalent to the setup fucntion in the Arduino paradigm
scohennm 0:8664d36d4ff3 69 mag.begin();
scohennm 0:8664d36d4ff3 70 // Setup event timers for LED blink and taking magnetometer data
scohennm 0:8664d36d4ff3 71 LEDTimer.start();
scohennm 0:8664d36d4ff3 72 LEDTimer.reset();
scohennm 0:8664d36d4ff3 73 DATATimer.start();
scohennm 0:8664d36d4ff3 74 DATATimer.reset();
scohennm 0:8664d36d4ff3 75 // Show program name LCD and Serial
scohennm 0:8664d36d4ff3 76 pc.printf(PROGNAME);
scohennm 0:8664d36d4ff3 77 LCDTMess(LPRNAME,MESSTIME);
scohennm 0:8664d36d4ff3 78 // Do forever... equivalent to the loop fucntion in the Arduino paradigm
scohennm 0:8664d36d4ff3 79 while (true) {
scohennm 0:8664d36d4ff3 80 // read the inverted logic of the left button on the board.
scohennm 0:8664d36d4ff3 81 LButtonState = !LftButton;
scohennm 0:8664d36d4ff3 82 if (LButtonState) { //Change data that is displayed cycle through states
scohennm 0:8664d36d4ff3 83 displayState++;
scohennm 0:8664d36d4ff3 84 displayState = displayState % NUMSTATES; // Roll over if greater than the number of states defined
scohennm 0:8664d36d4ff3 85 switch (displayState) {
scohennm 0:8664d36d4ff3 86 case L_STATE: {
scohennm 0:8664d36d4ff3 87 LCDTMess(LIGHT,MESSTIME);
scohennm 0:8664d36d4ff3 88 break;
scohennm 0:8664d36d4ff3 89 }
scohennm 0:8664d36d4ff3 90 case MAGX_STATE: {
scohennm 0:8664d36d4ff3 91 LCDTMess(MAGX_LBL,MESSTIME);
scohennm 0:8664d36d4ff3 92 break;
scohennm 0:8664d36d4ff3 93 }
scohennm 0:8664d36d4ff3 94 case MAGY_STATE:{
scohennm 0:8664d36d4ff3 95 LCDTMess(MAGY_LBL,MESSTIME);
scohennm 0:8664d36d4ff3 96 break;
scohennm 0:8664d36d4ff3 97 }
scohennm 0:8664d36d4ff3 98 case BOTIX_STATE:{
scohennm 0:8664d36d4ff3 99 LCDTMess(BOTIX_LBL,MESSTIME);
scohennm 0:8664d36d4ff3 100 break;
scohennm 0:8664d36d4ff3 101 }
scohennm 0:8664d36d4ff3 102
scohennm 0:8664d36d4ff3 103 }
scohennm 0:8664d36d4ff3 104 }
scohennm 0:8664d36d4ff3 105 // Manage mag and light data
scohennm 0:8664d36d4ff3 106 if (DATATimer.read_ms() > DATATIME){ //take data at DATATIME intervals
scohennm 0:8664d36d4ff3 107 DATATimer.reset();
scohennm 0:8664d36d4ff3 108 lightValue = 1.0-LightSensor.read();
scohennm 0:8664d36d4ff3 109 mag.getValues(&magX, &magY, &magZ);
scohennm 0:8664d36d4ff3 110 MaxBValue = MaxBotix.read();
scohennm 0:8664d36d4ff3 111
scohennm 0:8664d36d4ff3 112 #ifdef PRINTDBUG
scohennm 0:8664d36d4ff3 113 pc.printf("%f\r\n", lightValue);
scohennm 0:8664d36d4ff3 114 pc.printf("%d\r\n", magX);
scohennm 0:8664d36d4ff3 115 pc.printf("%d\r\n", magY);
scohennm 0:8664d36d4ff3 116 pc.printf("%d\r\n", MaxBotix);
scohennm 0:8664d36d4ff3 117 #endif
scohennm 0:8664d36d4ff3 118
scohennm 0:8664d36d4ff3 119 switch (displayState) {
scohennm 0:8664d36d4ff3 120 case L_STATE: {
scohennm 0:8664d36d4ff3 121 sprintf (lcdData,"%4.3f",lightValue);
scohennm 0:8664d36d4ff3 122 break;
scohennm 0:8664d36d4ff3 123 }
scohennm 0:8664d36d4ff3 124 case MAGX_STATE: {
scohennm 0:8664d36d4ff3 125 sprintf (lcdData,"%4d",magX/100);
scohennm 0:8664d36d4ff3 126 break;
scohennm 0:8664d36d4ff3 127 }
scohennm 0:8664d36d4ff3 128 case MAGY_STATE: {
scohennm 0:8664d36d4ff3 129 sprintf (lcdData,"%4d",magY/10);
scohennm 0:8664d36d4ff3 130 break;
scohennm 0:8664d36d4ff3 131 }
scohennm 0:8664d36d4ff3 132 case BOTIX_STATE:{
scohennm 0:8664d36d4ff3 133 sprintf (lcdData,"%4.3f",MaxBValue);
scohennm 0:8664d36d4ff3 134 break;
scohennm 0:8664d36d4ff3 135 }
scohennm 0:8664d36d4ff3 136 }
scohennm 0:8664d36d4ff3 137 LCDMess(lcdData);
scohennm 0:8664d36d4ff3 138 }
scohennm 0:8664d36d4ff3 139 // Manage LED's
scohennm 0:8664d36d4ff3 140 if(LEDTimer.read_ms() > BLINKTIME) { // Blink LED's for dramatic effect.
scohennm 0:8664d36d4ff3 141 LEDTimer.reset();
scohennm 0:8664d36d4ff3 142 ledState = !ledState;
scohennm 0:8664d36d4ff3 143 Rled = ledState;
scohennm 0:8664d36d4ff3 144 Gled = !ledState;
scohennm 0:8664d36d4ff3 145 }
scohennm 0:8664d36d4ff3 146
scohennm 0:8664d36d4ff3 147 }
scohennm 0:8664d36d4ff3 148 }