C++ (Cpp) yas_bma250_power_down примеры использования

Пример #1

Файл: yas_acc_driver-bma250.c Проект: SerenityS/IM-A800S_Kernel

static int yas_bma250_set_delay(int delay)
{
    unsigned char odr;
    int i;

    /* Check initialize */
    if (acc_data.initialize == 0) {
        return YAS_ERROR_NOT_INITIALIZED;
    }

    /* Determine optimum odr */
    for (i = 1; i < (int)(sizeof(yas_bma250_odr_tbl) / sizeof(struct yas_bma250_odr)) &&
             delay >= (int)yas_bma250_odr_tbl[i].delay; i++)
        ;

    odr = yas_bma250_odr_tbl[i-1].odr;
    acc_data.delay = delay;

    if (yas_bma250_get_enable()) {
        yas_bma250_update_bits(YAS_BMA250_BANDWIDTH, odr);
        yas_bma250_update_bits(YAS_BMA250_SLEEP_DUR, bma250_set_sleep_dur(odr));
    } else {
        yas_bma250_power_up();
        yas_bma250_update_bits(YAS_BMA250_BANDWIDTH, odr);
        yas_bma250_update_bits(YAS_BMA250_SLEEP_DUR, bma250_set_sleep_dur(odr));
        yas_bma250_power_down();
    }

    return YAS_NO_ERROR;
}

Пример #2

static int yas_bma250_set_enable(int enable)
{
	int err;

	/* Check initialize */
	if (acc_data.initialize == 0)
		return YAS_ERROR_NOT_INITIALIZED;

	if (yas_bma250_ischg_enable(enable)) {
		if (enable) {
			/* Open i2c */
			err = yas_bma250_i2c_open();
			if (err != YAS_NO_ERROR)
				return err;
			/* Reset chip */
			yas_bma250_write_reg_byte(YAS_BMA250_SOFT_RESET_REG,
				YAS_BMA250_SOFT_RESET_VAL);
			yas_bma250_msleep(5);
			/* Set axes range*/
			yas_bma250_update_bits(YAS_BMA250_RANGE,
				YAS_BMA250_RANGE_2G);
			yas_bma250_set_delay(acc_data.delay);
			yas_bma250_power_up();
		} else {
			yas_bma250_power_down();
			err = yas_bma250_i2c_close();
			if (err != YAS_NO_ERROR)
				return err;
		}
	}

acc_data.enable = enable;

return YAS_NO_ERROR;
}

Пример #3

Файл: yas_acc_driver-bma25x.c Проект: 791254467/u8500_kernel

static int yas_bma250_init(void)
{
	struct yas_acc_filter filter;
	int err;
	int id;

	/* Check intialize */
	if (acc_data.initialize == 1)
		return YAS_ERROR_NOT_INITIALIZED;

	/* Init data */
	yas_bma250_init_data();

	/* Open i2c */
	err = yas_bma250_i2c_open();
	if (err != YAS_NO_ERROR)
		return err;

	/* Check id */
	id = yas_bma250_read_reg_byte(YAS_BMA250_CHIP_ID_REG);
	if (!((id == YAS_BMA250_CHIP_ID_250)  ||
	      (id == YAS_BMA250_CHIP_ID_250E) ||
	      (id == YAS_BMA250_CHIP_ID_254))) {
		yas_bma250_i2c_close();
		return YAS_ERROR_CHIP_ID;
	}

	/* Reset chip */
	yas_bma250_write_reg_byte(YAS_BMA250_SOFT_RESET_REG,
				  YAS_BMA250_SOFT_RESET_VAL);
	yas_bma250_msleep(3);

	/* Set axes range*/
	yas_bma250_update_bits(YAS_BMA250_RANGE, YAS_BMA250_RANGE_2G);

	acc_data.chip_id = (uint8_t)id;
	acc_data.initialize = 1;

	yas_bma250_set_delay(YAS_BMA250_DEFAULT_DELAY);
	yas_bma250_set_position(YAS_BMA250_DEFAULT_POSITION);
	filter.threshold = YAS_ACC_DEFAULT_FILTER_THRESH;
	yas_bma250_set_filter(&filter);
	yas_bma250_power_down();

	return YAS_NO_ERROR;
}

Пример #4

static int yas_bma250_set_delay(int delay)
{
	unsigned char odr;
	int i;

	/* Output data rate */
	static const struct yas_bma250_odr yas_bma250_odr_tbl[] = {
	{1,   YAS_BMA250_BANDWIDTH_1000HZ},
	{2,   YAS_BMA250_BANDWIDTH_500HZ},
	{4,   YAS_BMA250_BANDWIDTH_250HZ},
	{8,   YAS_BMA250_BANDWIDTH_125HZ},
	{16,  YAS_BMA250_BANDWIDTH_63HZ},
	{32,  YAS_BMA250_BANDWIDTH_32HZ},
	{64,  YAS_BMA250_BANDWIDTH_16HZ},
	{128, YAS_BMA250_BANDWIDTH_8HZ},
	};

	/* Check initialize */
	if (acc_data.initialize == 0)
		return YAS_ERROR_NOT_INITIALIZED;

	for (i = 1; i < 8; i++) {
		if (delay <= (int)yas_bma250_odr_tbl[i].delay)
			break;
	};

	odr = yas_bma250_odr_tbl[i-1].odr;
	acc_data.delay = delay;

	if (yas_bma250_get_enable()) {
		yas_bma250_update_bits(YAS_BMA250_BANDWIDTH, odr);
		yas_bma250_update_bits(YAS_BMA250_SLEEP_DUR,
			bma250_set_sleep_dur(odr));
	} else {
		yas_bma250_power_up();
		yas_bma250_update_bits(YAS_BMA250_BANDWIDTH, odr);
		yas_bma250_update_bits(YAS_BMA250_SLEEP_DUR,
			bma250_set_sleep_dur(odr));
		yas_bma250_power_down();
	}

	return YAS_NO_ERROR;
}