Vishal Bharam / Mbed 2 deprecated KL46z_single_tap_generic

Pulse Detection in z-axis

Dependencies:   MMA8451Q8b SLCD mbed

main.cpp@4:ba9ca0a0f87e, 2015-02-09 (annotated)

Committer:
scohennm
Date:
Mon Feb 09 20:05:43 2015 +0000
Revision:
4:ba9ca0a0f87e
Parent:
3:53d47a5dbb2c
Child:
5:1fe35a74799a
Update for generic tap program

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bcostm 0:912303e63cbd 1 #include "mbed.h"
scohennm 4:ba9ca0a0f87e 2 #include "MMA8451Q8g.h"
scohennm 1:65b0e488f02a 3 #include "SLCD.h"
scohennm 3:53d47a5dbb2c 4
scohennm 3:53d47a5dbb2c 5 #define BLINKTIME 0.7
scohennm 3:53d47a5dbb2c 6 #define RELAYON 0
scohennm 3:53d47a5dbb2c 7 #define RELAYOFF 1
scohennm 3:53d47a5dbb2c 8 #define LEDDELAY 0.75
scohennm 4:ba9ca0a0f87e 9 #define WAITDELAY 0.7
scohennm 3:53d47a5dbb2c 10 #define LCDLEN 10
scohennm 3:53d47a5dbb2c 11
scohennm 3:53d47a5dbb2c 12 #define REG_WHO_AM_I 0x0D
scohennm 3:53d47a5dbb2c 13 #define XYZ_DATA_CFG 0x0E
scohennm 3:53d47a5dbb2c 14
scohennm 3:53d47a5dbb2c 15 #define REG_OUT_X_MSB 0x01
scohennm 3:53d47a5dbb2c 16 #define REG_OUT_Y_MSB 0x03
scohennm 3:53d47a5dbb2c 17 #define REG_OUT_Z_MSB 0x05
scohennm 3:53d47a5dbb2c 18 #define REG_PULSE_SRC 0x22
scohennm 3:53d47a5dbb2c 19 #define REG_PULSE_CFG 0x21
scohennm 3:53d47a5dbb2c 20
scohennm 3:53d47a5dbb2c 21 #define MAX_2G 0x00
scohennm 3:53d47a5dbb2c 22 #define MAX_4G 0x01
scohennm 3:53d47a5dbb2c 23 #define MAX_8G 0x02
scohennm 3:53d47a5dbb2c 24
scohennm 3:53d47a5dbb2c 25 //#define PRINTDBUG
scohennm 3:53d47a5dbb2c 26 // Accelerometer SPI pins
scohennm 3:53d47a5dbb2c 27 #if defined (TARGET_KL25Z) || defined (TARGET_KL46Z)
scohennm 3:53d47a5dbb2c 28 PinName const SDA = PTE25;
scohennm 3:53d47a5dbb2c 29 PinName const SCL = PTE24;
scohennm 3:53d47a5dbb2c 30 #elif defined (TARGET_KL05Z)
scohennm 3:53d47a5dbb2c 31 PinName const SDA = PTB4;
scohennm 3:53d47a5dbb2c 32 PinName const SCL = PTB3;
scohennm 3:53d47a5dbb2c 33 #else
scohennm 3:53d47a5dbb2c 34 #error TARGET NOT DEFINED
scohennm 3:53d47a5dbb2c 35 #endif
scohennm 3:53d47a5dbb2c 36
scohennm 3:53d47a5dbb2c 37 #define MMA8451_I2C_ADDRESS (0x1d<<1)
bcostm 0:912303e63cbd 38
scohennm 1:65b0e488f02a 39 Ticker ledBlink; // timinginterrupt for RED led
scohennm 1:65b0e488f02a 40 InterruptIn mybutton(PTC3); //push botton with internal pullup
scohennm 1:65b0e488f02a 41 DigitalOut myled(LED_RED); // red led
scohennm 1:65b0e488f02a 42 DigitalOut relay(LED_GREEN); // green led
scohennm 1:65b0e488f02a 43
scohennm 3:53d47a5dbb2c 44 MMA8451Q acc(SDA, SCL, MMA8451_I2C_ADDRESS);
bcostm 0:912303e63cbd 45
scohennm 1:65b0e488f02a 46 float delay = WAITDELAY;
scohennm 1:65b0e488f02a 47 int relayState = RELAYOFF;
scohennm 1:65b0e488f02a 48 int outState = false;
scohennm 1:65b0e488f02a 49 SLCD slcd; //define LCD display
scohennm 3:53d47a5dbb2c 50 char LCDMessages[2][LCDLEN] = {"TRUE", "FALS"};
scohennm 1:65b0e488f02a 51
scohennm 1:65b0e488f02a 52
scohennm 3:53d47a5dbb2c 53 void LCDMess(char *lMess, float dWait){
scohennm 3:53d47a5dbb2c 54 slcd.Home();
scohennm 1:65b0e488f02a 55 slcd.clear();
scohennm 1:65b0e488f02a 56 slcd.printf(lMess);
scohennm 3:53d47a5dbb2c 57 wait(dWait);
scohennm 3:53d47a5dbb2c 58 }
scohennm 3:53d47a5dbb2c 59 void LCDMessNoDwell(char *lMess){
scohennm 3:53d47a5dbb2c 60 slcd.Home();
scohennm 3:53d47a5dbb2c 61 slcd.clear();
scohennm 3:53d47a5dbb2c 62 slcd.printf(lMess);
scohennm 3:53d47a5dbb2c 63 }
scohennm 3:53d47a5dbb2c 64
scohennm 1:65b0e488f02a 65
scohennm 1:65b0e488f02a 66 void LEDBlinker(){ // RED LED interrupt
scohennm 1:65b0e488f02a 67 outState = !outState;
scohennm 1:65b0e488f02a 68 myled.write(outState);
scohennm 1:65b0e488f02a 69 }
scohennm 1:65b0e488f02a 70
scohennm 1:65b0e488f02a 71
scohennm 1:65b0e488f02a 72 void pressed() // button intterupt
bcostm 0:912303e63cbd 73 {
scohennm 1:65b0e488f02a 74 relayState = !relayState;
scohennm 1:65b0e488f02a 75 relay.write(relayState);
bcostm 0:912303e63cbd 76 }
scohennm 1:65b0e488f02a 77
bcostm 0:912303e63cbd 78 int main()
bcostm 0:912303e63cbd 79 {
scohennm 3:53d47a5dbb2c 80 uint8_t regData = MAX_4G;
scohennm 3:53d47a5dbb2c 81 uint8_t latchData = 0x40; //0b01000000; //for pulse config register
scohennm 3:53d47a5dbb2c 82 uint8_t axisData = 0x10; //0b00010000;
scohennm 3:53d47a5dbb2c 83 char lcdData[LCDLEN];
scohennm 3:53d47a5dbb2c 84
scohennm 1:65b0e488f02a 85 myled.write(outState);
scohennm 1:65b0e488f02a 86 relay.write(relayState);
scohennm 3:53d47a5dbb2c 87
scohennm 3:53d47a5dbb2c 88 // set up interrrupts to be used later for taps
bcostm 0:912303e63cbd 89 mybutton.fall(&pressed);
scohennm 3:53d47a5dbb2c 90 // set up interrrupts to be used later for taps
scohennm 1:65b0e488f02a 91 ledBlink.attach(&LEDBlinker, LEDDELAY);
scohennm 3:53d47a5dbb2c 92
scohennm 3:53d47a5dbb2c 93 // Check to see if accerlometer is alive and well
scohennm 3:53d47a5dbb2c 94 acc.setGLimit(MAX_2G); // For now set to 2g
scohennm 3:53d47a5dbb2c 95 acc.readRegs(XYZ_DATA_CFG, &regData, 1);
scohennm 3:53d47a5dbb2c 96 sprintf (lcdData,"%x",regData); // Note displaying in hexidecimal
scohennm 3:53d47a5dbb2c 97 LCDMess(lcdData,BLINKTIME);
scohennm 3:53d47a5dbb2c 98 acc.readRegs(REG_WHO_AM_I, &regData, 1);
scohennm 3:53d47a5dbb2c 99 sprintf (lcdData,"%x",regData);
scohennm 3:53d47a5dbb2c 100 LCDMess(lcdData,BLINKTIME);
scohennm 3:53d47a5dbb2c 101
scohennm 1:65b0e488f02a 102 while (true) {
scohennm 3:53d47a5dbb2c 103
scohennm 3:53d47a5dbb2c 104 // Read Pulse Source Data and check to see if things have been set
scohennm 3:53d47a5dbb2c 105 acc.readRegs(REG_PULSE_CFG, &regData, 1); // check it
scohennm 3:53d47a5dbb2c 106 sprintf (lcdData,"%x",regData);
scohennm 3:53d47a5dbb2c 107 LCDMess(lcdData,BLINKTIME);
scohennm 3:53d47a5dbb2c 108
scohennm 4:ba9ca0a0f87e 109 regData = latchData | axisData;
scohennm 4:ba9ca0a0f87e 110 acc.setRegisterInStandby(REG_PULSE_CFG, regData); // write the data
scohennm 3:53d47a5dbb2c 111 acc.readRegs(REG_PULSE_CFG, &regData, 1); // check it
scohennm 3:53d47a5dbb2c 112 sprintf (lcdData,"%x",regData);
scohennm 3:53d47a5dbb2c 113 LCDMess(lcdData,BLINKTIME);
scohennm 3:53d47a5dbb2c 114
scohennm 3:53d47a5dbb2c 115 acc.readRegs(REG_PULSE_SRC, &regData, 1);
scohennm 3:53d47a5dbb2c 116 sprintf (lcdData,"%x",regData);
scohennm 3:53d47a5dbb2c 117 LCDMess(lcdData,BLINKTIME);
scohennm 3:53d47a5dbb2c 118
scohennm 3:53d47a5dbb2c 119 LCDMessNoDwell(LCDMessages[relayState]);
bcostm 0:912303e63cbd 120 wait(delay);
bcostm 0:912303e63cbd 121 }
bcostm 0:912303e63cbd 122 }