Watchy/src/bma.cpp

#include "bma.h"
#include <Arduino.h>

I2CBus *BMA::_bus = nullptr;

BMA::BMA(I2CBus &bus)
{
    _bus = &bus;
}

BMA::~BMA()
{

}

uint16_t BMA::read(uint8_t addr, uint8_t reg, uint8_t *data, uint16_t len)
{
    return _bus->readBytes(addr, reg, data, len);
}

uint16_t BMA::write(uint8_t addr, uint8_t reg, uint8_t *data, uint16_t len)
{
    return _bus->writeBytes(addr, reg, data, len);
}

bool BMA::begin()
{
    _dev.dev_addr        = BMA4_I2C_ADDR_PRIMARY;
    _dev.interface       = BMA4_I2C_INTERFACE;
    _dev.bus_read        = read;
    _dev.bus_write       = write;
    _dev.delay           = delay;
    _dev.read_write_len  = 8;
    _dev.resolution      = 12;
    _dev.feature_len     = BMA423_FEATURE_SIZE;

    reset();

    delay(20);

    if (bma423_init(&_dev) != BMA4_OK) {
        Serial.println("bma4 init fail");
        return false;
    }

    config();

    return true;
}

void BMA::reset()
{
    uint8_t reg = 0xB6;
    _bus->writeBytes(BMA4_I2C_ADDR_PRIMARY, 0x7E, &reg, 1);
}

uint16_t BMA::config()
{
    return bma423_write_config_file(&_dev);
}

bool BMA::getAccel(Accel &acc)
{
    memset(&acc, 0, sizeof(acc));
    if (bma4_read_accel_xyz(&acc, &_dev) != BMA4_OK) {
        return false;
    }
    return true;
}

uint8_t BMA::direction()
{
    Accel acc;
    if (bma4_read_accel_xyz(&acc, &_dev) != BMA4_OK) {
        return 0;
    }
    uint16_t absX = abs(acc.x);
    uint16_t absY = abs(acc.y);
    uint16_t absZ = abs(acc.z);

    if ((absZ > absX) && (absZ > absY)) {
        if (acc.z > 0) {
            return  DIRECTION_DISP_DOWN;
        } else {
            return DIRECTION_DISP_UP;
        }
    } else if ((absY > absX) && (absY > absZ)) {
        if (acc.y > 0) {
            return DIRECTION_BOTTOM_EDGE;
        } else {
            return  DIRECTION_TOP_EDGE;
        }
    } else {
        if (acc.x < 0) {
            return  DIRECTION_RIGHT_EDGE;
        } else {
            return DIRECTION_LEFT_EDGE;
        }
    }
}

float BMA::temperature()
{
    int32_t data = 0;
    bma4_get_temperature(&data, BMA4_DEG, &_dev);
    float res = (float)data / (float)BMA4_SCALE_TEMP;
    /* 0x80 - temp read from the register and 23 is the ambient temp added.
     * If the temp read from register is 0x80, it means no valid
     * information is available */
    if (((data - 23) / BMA4_SCALE_TEMP) == 0x80) {
        res = 0;
    }
    return res;
}


void BMA::enableAccel()
{
    if (bma4_set_accel_enable(BMA4_ENABLE, &_dev)) {
        return;
    }
    Acfg cfg;
    cfg.odr = BMA4_OUTPUT_DATA_RATE_100HZ;
    cfg.range = BMA4_ACCEL_RANGE_2G;
    cfg.bandwidth = BMA4_ACCEL_NORMAL_AVG4;
    cfg.perf_mode = BMA4_CONTINUOUS_MODE;

    if (bma4_set_accel_config(&cfg, &_dev)) {
        Serial.println("[bma4] set accel config fail");
        return;
    }
}

void BMA::disalbeIrq()
{
    bma423_map_interrupt(BMA4_INTR1_MAP, BMA423_STEP_CNTR_INT /* |BMA423_WAKEUP_INT*/, BMA4_DISABLE, &_dev);
}

void BMA::enableIrq()
{
    bma423_map_interrupt(BMA4_INTR1_MAP, BMA423_STEP_CNTR_INT /* |BMA423_WAKEUP_INT*/, BMA4_ENABLE, &_dev);
}

//attachInterrupt bma423 int1
void BMA::attachInterrupt()
{
    uint16_t rslt = BMA4_OK;
    enableAccel();
    // rslt |= bma423_reset_step_counter(&_dev);
    rslt |= bma423_step_detector_enable(BMA4_ENABLE, &_dev);
    rslt |= bma423_feature_enable(BMA423_STEP_CNTR, BMA4_ENABLE, &_dev);
    rslt |= bma423_feature_enable(BMA423_WAKEUP, BMA4_ENABLE, &_dev);
    rslt |= bma423_feature_enable(BMA423_TILT, BMA4_ENABLE, &_dev);
    rslt |= bma423_step_counter_set_watermark(100, &_dev);

    // rslt |= bma423_map_interrupt(BMA4_INTR1_MAP, BMA423_STEP_CNTR_INT | BMA423_WAKEUP_INT, BMA4_ENABLE, &_dev);

    rslt |= bma423_map_interrupt(BMA4_INTR1_MAP,  BMA423_STEP_CNTR_INT, BMA4_ENABLE, &_dev);
    rslt |= bma423_map_interrupt(BMA4_INTR1_MAP, BMA423_TILT_INT, BMA4_ENABLE, &_dev);

    bma423_anymotion_enable_axis(BMA423_ALL_AXIS_DIS, &_dev);

    struct bma4_int_pin_config config ;

    config.edge_ctrl = BMA4_LEVEL_TRIGGER;
    config.lvl = BMA4_ACTIVE_HIGH;
    config.od = BMA4_PUSH_PULL;
    config.output_en = BMA4_OUTPUT_ENABLE;
    config.input_en = BMA4_INPUT_DISABLE;
    rslt |= bma4_set_int_pin_config(&config, BMA4_INTR1_MAP, &_dev);

    // Serial.printf("[bma4] attachInterrupt %s\n", rslt != 0 ? "fail" : "pass");


    struct bma423_axes_remap remap_data;
    remap_data.x_axis = 0;
    remap_data.x_axis_sign = 1;
    remap_data.y_axis = 1;
    remap_data.y_axis_sign = 1;
    remap_data.z_axis  = 2;
    remap_data.z_axis_sign  = 0;

    bma423_set_remap_axes(&remap_data, &_dev);

}

bool BMA::readInterrupt()
{
    return bma423_read_int_status(&_irqStatus, &_dev) == BMA4_OK;
}

uint8_t BMA::getIrqStatus()
{
    return _irqStatus;
}

uint32_t BMA::getCounter()
{
    uint32_t stepCount;
    if (bma423_step_counter_output(&stepCount, &_dev) == BMA4_OK) {
        return stepCount;
    }
    return 0;
}

bool BMA::isStepCounter()
{
    return (bool)(BMA423_STEP_CNTR_INT & _irqStatus);
}

bool BMA::isDoubleClick()
{
    return (bool)(BMA423_WAKEUP_INT & _irqStatus);
}


bool BMA::isTilt()
{
    return (bool)(BMA423_TILT_INT & _irqStatus);
}


bool BMA::isActivity()
{
    return (bool)(BMA423_ACTIVITY_INT & _irqStatus);
}

bool BMA::isAnyNoMotion()
{
    return (bool)(BMA423_ANY_NO_MOTION_INT & _irqStatus);
}


const char *BMA::getActivity()
{
    uint8_t activity;
    bma423_activity_output(&activity, &_dev);
    if (activity & BMA423_USER_STATIONARY) {
        return "BMA423_USER_STATIONARY";
    } else if (activity & BMA423_USER_WALKING) {
        return "BMA423_USER_WALKING";
    } else if (activity & BMA423_USER_RUNNING) {
        return "BMA423_USER_RUNNING";
    } else if (activity & BMA423_STATE_INVALID) {
        return "BMA423_STATE_INVALID";
    }
    return "None";
}

bool BMA::enableStepCountInterrupt(bool en)
{
    return  (BMA4_OK == bma423_map_interrupt(BMA4_INTR1_MAP,  BMA423_STEP_CNTR_INT, en, &_dev));
}

bool BMA::enableTiltInterrupt(bool en)
{
    return  (BMA4_OK == bma423_map_interrupt(BMA4_INTR1_MAP, BMA423_TILT_INT, en, &_dev));
}

bool BMA::enableWakeupInterrupt(bool en)
{
    return  (BMA4_OK == bma423_map_interrupt(BMA4_INTR1_MAP, BMA423_WAKEUP_INT, en, &_dev));
}

bool BMA::enableAnyNoMotionInterrupt(bool en)
{
    return  (BMA4_OK == bma423_map_interrupt(BMA4_INTR1_MAP, BMA423_ANY_NO_MOTION_INT, en, &_dev));
}

bool BMA::enableActivityInterrupt(bool en)
{
    return  (BMA4_OK == bma423_map_interrupt(BMA4_INTR1_MAP, BMA423_ACTIVITY_INT, en, &_dev));
}