![](/media/cache/img/default_profile.jpg.50x50_q85.jpg)
Pulse Detection in z-axis
Dependencies: MMA8451Q8b SLCD mbed
Fork of KL46z_single_tap_generic by
Diff: main.cpp
- Revision:
- 3:53d47a5dbb2c
- Parent:
- 2:17a0550771c4
- Child:
- 4:ba9ca0a0f87e
diff -r 17a0550771c4 -r 53d47a5dbb2c main.cpp --- a/main.cpp Sun Feb 01 19:26:52 2015 +0000 +++ b/main.cpp Tue Feb 03 18:05:52 2015 +0000 @@ -1,29 +1,67 @@ #include "mbed.h" #include "MMA8451Q8.h" #include "SLCD.h" -#define RELAYON 0 -#define RELAYOFF 1 -#define LEDDELAY 0.75 -#define WAITDELAY 3.0 + +#define BLINKTIME 0.7 +#define RELAYON 0 +#define RELAYOFF 1 +#define LEDDELAY 0.75 +#define WAITDELAY 3.0 +#define LCDLEN 10 + +#define REG_WHO_AM_I 0x0D +#define XYZ_DATA_CFG 0x0E + +#define REG_OUT_X_MSB 0x01 +#define REG_OUT_Y_MSB 0x03 +#define REG_OUT_Z_MSB 0x05 +#define REG_PULSE_SRC 0x22 +#define REG_PULSE_CFG 0x21 + +#define MAX_2G 0x00 +#define MAX_4G 0x01 +#define MAX_8G 0x02 + +//#define PRINTDBUG +// Accelerometer SPI pins +#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) Ticker ledBlink; // timinginterrupt for RED led InterruptIn mybutton(PTC3); //push botton with internal pullup DigitalOut myled(LED_RED); // red led DigitalOut relay(LED_GREEN); // green led + MMA8451Q acc(SDA, SCL, MMA8451_I2C_ADDRESS); float delay = WAITDELAY; int relayState = RELAYOFF; int outState = false; SLCD slcd; //define LCD display -char LCDMessages[2][10] = {"TRUE", "FALS"}; +char LCDMessages[2][LCDLEN] = {"TRUE", "FALS"}; -void LCDMess(char *lMess){ - slcd.Home();// message stays till next update +void LCDMess(char *lMess, float dWait){ + slcd.Home(); slcd.clear(); slcd.printf(lMess); -} + wait(dWait); +} +void LCDMessNoDwell(char *lMess){ + slcd.Home(); + slcd.clear(); + slcd.printf(lMess); +} + void LEDBlinker(){ // RED LED interrupt outState = !outState; @@ -39,13 +77,45 @@ int main() { + uint8_t regData = MAX_4G; + uint8_t latchData = 0x40; //0b01000000; //for pulse config register + uint8_t axisData = 0x10; //0b00010000; + char lcdData[LCDLEN]; + myled.write(outState); relay.write(relayState); + +// set up interrrupts to be used later for taps mybutton.fall(&pressed); +// set up interrrupts to be used later for taps ledBlink.attach(&LEDBlinker, LEDDELAY); + +// Check to see if accerlometer is alive and well + acc.setGLimit(MAX_2G); // For now set to 2g + acc.readRegs(XYZ_DATA_CFG, ®Data, 1); + sprintf (lcdData,"%x",regData); // Note displaying in hexidecimal + LCDMess(lcdData,BLINKTIME); + acc.readRegs(REG_WHO_AM_I, ®Data, 1); + sprintf (lcdData,"%x",regData); + LCDMess(lcdData,BLINKTIME); + while (true) { - // other things can be put here. - LCDMess(LCDMessages[relayState]); + + // Read Pulse Source Data and check to see if things have been set + acc.readRegs(REG_PULSE_CFG, ®Data, 1); // check it + sprintf (lcdData,"%x",regData); + LCDMess(lcdData,BLINKTIME); + + acc.setPulseConfiguration(latchData, axisData); // write the data + acc.readRegs(REG_PULSE_CFG, ®Data, 1); // check it + sprintf (lcdData,"%x",regData); + LCDMess(lcdData,BLINKTIME); + + acc.readRegs(REG_PULSE_SRC, ®Data, 1); + sprintf (lcdData,"%x",regData); + LCDMess(lcdData,BLINKTIME); + + LCDMessNoDwell(LCDMessages[relayState]); wait(delay); } }