qmi8658_tap_detection_deprecated.ino

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#include <Arduino.h>
#include <Wire.h>
#include <SPI.h>
#include "SensorQMI8658.hpp"
#ifdef ARDUINO_T_BEAM_S3_SUPREME
#include <XPowersAXP2101.tpp>   //PMU Library https://github.com/lewisxhe/XPowersLib.git
#endif
 
 
// #define USE_I2C              //Using the I2C interface
 
#ifdef USE_I2C
#ifndef SENSOR_SDA
#define SENSOR_SDA  17
#endif
 
#ifndef SENSOR_SCL
#define SENSOR_SCL  18
#endif
 
#else   /* SPI interface */
 
#ifndef SPI_MOSI
#define SPI_MOSI   (35)
#endif
 
#ifndef SPI_SCK
#define SPI_SCK    (36)
#endif
 
#ifndef SPI_MISO
#define SPI_MISO   (37)
#endif
 
#ifndef IMU_CS
#define IMU_CS      34      // IMU CS PIN
#endif
 
#endif  /* USE_I2C*/
 
 
#ifndef IMU_IRQ
#define IMU_IRQ     33      // IMU INT PIN
#endif
 
#ifndef OLED_SDA
#define OLED_SDA    22      // Display Wire SDA Pin
#endif
 
#ifndef OLED_SCL
#define OLED_SCL    21      // Display Wire SCL Pin
#endif
 
SensorQMI8658 qmi;
 
 
bool interruptFlag = false;
 
void setFlag(void)
{
    interruptFlag = true;
}
 
 
void beginPower()
{
    // T_BEAM_S3_SUPREME The PMU voltage needs to be turned on to use the sensor
#if defined(ARDUINO_T_BEAM_S3_SUPREME)
    XPowersAXP2101 power;
    power.begin(Wire1, AXP2101_SLAVE_ADDRESS, 42, 41);
    power.disableALDO1();
    power.disableALDO2();
    delay(250);
    power.setALDO1Voltage(3300); power.enableALDO1();
    power.setALDO2Voltage(3300); power.enableALDO2();
#endif
}
 
void tapEventCallback()
{
    SensorQMI8658::TapEvent event = qmi.getTapStatus();
    switch (event) {
    case SensorQMI8658::SINGLE_TAP:
        Serial.println("Single-TAP");
        break;
    case SensorQMI8658::DOUBLE_TAP:
        Serial.println("Double-TAP");
        break;
    default:
        break;
    }
}
 
void setup()
{
    Serial.begin(115200);
    while (!Serial);
 
    beginPower();
 
    bool ret = false;
#ifdef USE_I2C
    ret = qmi.begin(Wire, QMI8658_L_SLAVE_ADDRESS, SENSOR_SDA, SENSOR_SCL);
#else
#if defined(SPI_MOSI) && defined(SPI_SCK) && defined(SPI_MISO)
    ret = qmi.begin(SPI, IMU_CS, SPI_MOSI, SPI_MISO, SPI_SCK);
#else
    ret = qmi.begin(SPI, IMU_CS);
#endif
#endif
 
    if (!ret) {
        Serial.println("Failed to find QMI8658 - check your wiring!");
        while (1) {
            delay(1000);
        }
    }
 
    /* Get chip id*/
    Serial.print("Device ID:");
    Serial.println(qmi.getChipID(), HEX);
 
    //** The recommended output data rate for detection is higher than 500HZ
    qmi.configAccelerometer(
        /*
         * ACC_RANGE_2G
         * ACC_RANGE_4G
         * ACC_RANGE_8G
         * ACC_RANGE_16G
         * */
        SensorQMI8658::ACC_RANGE_4G,
        /*
         * ACC_ODR_1000H
         * ACC_ODR_500Hz
         * ACC_ODR_250Hz
         * ACC_ODR_125Hz
         * ACC_ODR_62_5Hz
         * ACC_ODR_31_25Hz
         * ACC_ODR_LOWPOWER_128Hz
         * ACC_ODR_LOWPOWER_21Hz
         * ACC_ODR_LOWPOWER_11Hz
         * ACC_ODR_LOWPOWER_3H
        * */
        SensorQMI8658::ACC_ODR_500Hz);
 
    // Enable the accelerometer
    qmi.enableAccelerometer();
 
    //* Priority definition between the x, y, z axes of acceleration.
    uint8_t priority = SensorQMI8658::PRIORITY0;   //(X > Y> Z)
    //* Defines the maximum duration (in sample) for a valid peak.
    //* In a valid peak, the linear acceleration should reach or be higher than the PeakMagThr
    //* and should return to quiet (no significant movement) within UDMThr, at the end of PeakWindow.
    uint8_t peakWindow = 20; //20 @500Hz ODR
    //* Defines the minimum quiet time before the second Tap happen.
    //* After the first Tap is detected, there should be no significant movement (defined by UDMThr) during the TapWindow.
    //* The valid second tap should be detected after TapWindow and before DTapWindow.
    uint16_t tapWindow = 50; //50 @500Hz ODR
    //* Defines the maximum time for a valid second Tap for Double Tap,
    //* count start from the first peak of the valid first Tap.
    uint16_t dTapWindow = 250; //250 @500Hz ODR
    //* Defines the ratio for calculating the average of the movement
    //* magnitude. The bigger of Gamma, the bigger weight of the latest  data.
    float alpha = 0.0625;
    //* Defines the ratio for calculating the average of the movement
    //* magnitude. The bigger of Gamma, the bigger weight of the latest data.
    float gamma = 0.25;
    //* Threshold for peak detection.
    float peakMagThr = 0.8; //0.8g square
    //* Undefined Motion threshold. This defines the threshold of the
    //* Linear Acceleration for quiet status.
    float UDMTh = 0.4; //0.4g square
 
    qmi.configTap(priority, peakWindow, tapWindow,
                  dTapWindow, alpha, gamma, peakMagThr, UDMTh);
 
    // Enable the Tap Detection and enable the interrupt
    qmi.enableTap(SensorQMI8658::INTERRUPT_PIN_1);
 
    // Set the Tap Detection callback function
    qmi.setTapEventCallBack(tapEventCallback);
 
    /*
     * When the QMI8658 is configured as Wom, the interrupt level is arbitrary,
     * not absolute high or low, and it is in the jump transition state
     */
    attachInterrupt(IMU_IRQ, setFlag, CHANGE);
}
 
 
void loop()
{
    if (interruptFlag) {
        interruptFlag = false;
        qmi.update();
    }
    delay(50);
}