KL46z_single_tap_2017.cpp

00001 #include "mbed.h"
00002 #include "MMA8451Q8g.h"
00003 #include "SLCD.h"
00004 
00005 #define BLINKTIME   1.5
00006 #define RELAYON     0
00007 #define RELAYOFF    1
00008 #define LEDDELAY    0.4
00009 #define WAITDELAY   0.7
00010 #define LCDLEN      10
00011 
00012 #define REG_WHO_AM_I      0x0D
00013 #define XYZ_DATA_CFG      0x0E
00014 
00015 #define REG_OUT_X_MSB     0x01
00016 #define REG_OUT_Y_MSB     0x03
00017 #define REG_OUT_Z_MSB     0x05
00018 #define REG_PULSE_CFG     0x21
00019 #define REG_PULSE_SRC     0x22
00020 #define REG_PULSE_THSZ    0x25
00021 #define REH_PULSE_TMLT    0x26
00022 #define REG_CTRL_4        0x2D
00023 #define REG_CTRL_5        0x2E
00024 
00025 #define MAX_2G            0x00
00026 #define MAX_4G            0x01
00027 #define MAX_8G            0x02
00028 /**************************************
00029 You need to fill nn the missing numbers below for this to work
00030 0x00 is just a place holder 
00031 *************************************/
00032 #define LATCH_DATA        0x00  // for use in REG_PULSE_CFG
00033 #define AXIS_DATA         0x00
00034 #define SET_INTERRUPT     0x00     //using interrupt INT1 PTC5
00035 #define SET_INT_LINE      0x00
00036 
00037 #define SET_THZ           0x00      //  See Table 49 in data sheet
00038 
00039 #define SET_TMLT          0x00      // See Table 51 in data sheet
00040 /*********************************************************/
00041 
00042 //#define PRINTDBUG
00043 // Accelerometer I2C pins
00044 #if   defined (TARGET_KL25Z) || defined (TARGET_KL46Z)
00045   PinName const SDA = PTE25;
00046   PinName const SCL = PTE24;
00047 #elif defined (TARGET_KL05Z)
00048   PinName const SDA = PTB4;
00049   PinName const SCL = PTB3;
00050 #else
00051   #error TARGET NOT DEFINED
00052 #endif
00053 
00054 #define MMA8451_I2C_ADDRESS (0x1d<<1)
00055  
00056 Ticker ledBlink; // timinginterrupt for RED led
00057 InterruptIn MMA8451QInt1(PTC5);  //push botton with internal pullup
00058 //InterruptIn MMA8451QInt1(PTD1);
00059 DigitalOut myled(LED_RED); // red led
00060 DigitalOut relay(LED_GREEN); // green led
00061 
00062  MMA8451Q acc(SDA, SCL, MMA8451_I2C_ADDRESS);
00063  
00064 float delay = WAITDELAY;
00065 int relayState = RELAYOFF;
00066 int outState = false;
00067 SLCD slcd; //define LCD display
00068 char LCDMessages[2][LCDLEN] = {"TRUE", "FALS"};
00069 
00070 
00071 void LCDMess(char *lMess, float dWait){
00072         slcd.Home();
00073         slcd.clear();
00074         slcd.printf(lMess);
00075         wait(dWait);
00076 } 
00077 void LCDMessNoDwell(char *lMess){
00078         slcd.Home();
00079         slcd.clear();
00080         slcd.printf(lMess);
00081 } 
00082 
00083 // Interrupt routines
00084 void LEDBlinker(){  // RED LED interrupt
00085     outState = !outState; 
00086     myled.write(outState);
00087 }
00088 
00089 void GreenLEDBlinker(){  // Green LED interrupt
00090     //uint8_t i_regData; 
00091     relayState = !relayState; 
00092     relay.write(relayState);
00093     //acc.readRegs(REG_PULSE_SRC, &i_regData, 1); // Clear the tap event
00094 }        
00095 
00096 // end interrupt routines
00097 
00098 int main()
00099 {
00100     uint8_t regData; 
00101     
00102 
00103     char lcdData[LCDLEN];
00104     
00105     myled.write(outState);
00106     relay.write(relayState);
00107     
00108 // set up interrrupts to be used later for taps
00109     MMA8451QInt1.rise(&GreenLEDBlinker);
00110     MMA8451QInt1.mode(PullNone); 
00111    
00112 // set up interrrupts to be used later for taps
00113     ledBlink.attach(&LEDBlinker, LEDDELAY);
00114   
00115 // Read Pulse Source Data and check to see if things have been set
00116     acc.readRegs(REG_PULSE_CFG, &regData, 1);  // check it
00117     sprintf (lcdData,"%x",regData);
00118     LCDMess(lcdData,BLINKTIME); 
00119     
00120 // *********** Initialize for tap tecognition ***********      
00121     regData = LATCH_DATA | AXIS_DATA;
00122     acc.setRegisterInStandby(REG_PULSE_CFG, regData); // write the data
00123     acc.readRegs(REG_PULSE_CFG, &regData, 1);  // check it
00124     sprintf (lcdData,"%x",regData);
00125     LCDMess(lcdData,BLINKTIME);     
00126     
00127 // Check to see if accerlometer is alive and well
00128     acc.setGLimit(MAX_4G); // For now set to 2g
00129     acc.readRegs(XYZ_DATA_CFG, &regData, 1);
00130     sprintf (lcdData,"%x",regData); // Note displaying in hexidecimal
00131     LCDMess(lcdData,BLINKTIME);
00132     
00133 // Setup single-tap pulse prarameters.
00134    acc.setRegisterInStandby(REG_PULSE_THSZ, SET_THZ); // write the data
00135    acc.setRegisterInStandby(REH_PULSE_TMLT, SET_TMLT); // write the data 
00136       
00137 // Set up (pulse) interrupt to INT1 pin
00138     acc.setRegisterInStandby(REG_CTRL_4, SET_INTERRUPT); // write the data
00139     acc.setRegisterInStandby(REG_CTRL_5, SET_INT_LINE); // write the data
00140 // End or seetup    
00141 
00142     acc.readRegs(REG_WHO_AM_I, &regData, 1);
00143     sprintf (lcdData,"%x",regData);
00144     LCDMess(lcdData,BLINKTIME); 
00145   
00146     
00147     while (true) { 
00148         acc.readRegs(REG_PULSE_SRC, &regData, 1);
00149         sprintf (lcdData,"%x",regData);
00150         LCDMess(lcdData,BLINKTIME);           
00151         LCDMessNoDwell(LCDMessages[relayState]);  
00152         wait(delay);
00153     }
00154 }