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/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2011-07-13 onelife Initial creation for using EFM32 ADC module to
* interface the Freescale MMA7361L
* 2011-08-02 onelife Add digital interface support of using EFM32 IIC
* module for the Freescale MMA7455L
*/
#ifndef __DEV_ACCEL_H__
#define __DEV_ACCEL_H__
/* Includes ------------------------------------------------------------------*/
#if (EFM32_USING_ACCEL == EFM32_INTERFACE_IIC)
#include "mma7455l.h"
#endif
/* Exported types ------------------------------------------------------------*/
struct efm32_accel_result_t
{
rt_int32_t x;
rt_int32_t y;
rt_int32_t z;
};
/* Exported constants --------------------------------------------------------*/
/* Exported macro ------------------------------------------------------------*/
/* MMA7361LC
g-Select g-Range Sensitivity
0 1.5 g 800 mV/g
1 6 g 206 mV/g
MMA7455L
g-Select g-Range Sensitivity
0 2 g 64 LSB/g
1 4 g 32 LSB/g
2 8 g 16 LSB/g
*/
#define ACCEL_G_SELECT (0)
#define ACCEL_CAL_SAMPLES (4) /* Must be multiple of 2 */
#define ACCEL_CAL_ROUND (50)
#define ACCEL_CAL_SIMPLE (0)
#define ACCEL_CAL_INTERACT (1)
#if (EFM32_USING_ACCEL == EFM32_INTERFACE_ADC)
/* Reading_at_1g = Sensitivity * Max_reading / Refference_voltage */
#define ACCEL_CAL_1G_VALUE {993, 256}
#define ACCEL_X_ADC_CH ADC_SCANCTRL_INPUTMASK_CH2
#define ACCEL_Y_ADC_CH ADC_SCANCTRL_INPUTMASK_CH3
#define ACCEL_Z_ADC_CH ADC_SCANCTRL_INPUTMASK_CH4
#elif (EFM32_USING_ACCEL == EFM32_INTERFACE_IIC)
#define ACCEL_CAL_1G_VALUE {0x3f, 0x1f, 0x0f}
#define ACCEL_IIC_SLAVE_ADDRESS (0x1d)
#define ACCEL_INT1_PORT (gpioPortD)
#define ACCEL_INT1_PIN (13)
#define ACCEL_INT2_PORT (gpioPortD)
#define ACCEL_INT2_PIN (12)
#define ACCEL_MODE_STANDBY (1 << 0)
#define ACCEL_MODE_MEASUREMENT (1 << 1)
#define ACCEL_MODE_LEVEL (1 << 2)
#define ACCEL_MODE_PULSE (1 << 3)
#define ACCEL_RANGE_8G (1 << 4)
#define ACCEL_RANGE_4G (1 << 5)
#define ACCEL_RANGE_2G (1 << 6)
#define ACCEL_INTPIN_INVERSE (1 << 7)
#define ACCEL_INT_LEVEL_PULSE (1 << 8)
#define ACCEL_INT_PULSE_LEVEL (1 << 9)
#define ACCEL_INT_SINGLE_DOUBLE (1 << 10)
#define ACCEL_DISABLE_X (1 << 11)
#define ACCEL_DISABLE_Y (1 << 12)
#define ACCEL_DISABLE_Z (1 << 13)
#define ACCEL_THRESHOLD_INTEGER (1 << 14) /* For level detection only */
#define ACCEL_BANDWIDTH_125HZ (1 << 15)
#define ACCEL_LEVEL_AND (1 << 16)
#define ACCEL_PULSE_AND (1 << 17)
#define ACCEL_DRIVE_STRONG (1 << 18)
#define ACCEL_SOURCE_LEVEL_X (1 << 19)
#define ACCEL_SOURCE_LEVEL_Y (1 << 20)
#define ACCEL_SOURCE_LEVEL_Z (1 << 21)
#define ACCEL_SOURCE_PULSE_X (1 << 22)
#define ACCEL_SOURCE_PULSE_Y (1 << 23)
#define ACCEL_SOURCE_PULSE_Z (1 << 24)
#define ACCEL_SHIFT_MODE (0)
#define ACCEL_SHIFT_RANGE (4)
#define ACCEL_SHIFT_INT (8)
#define ACCEL_SHIFT_DISABLE (11)
#define ACCEL_SHIFT_SOURCE (19)
#define ACCEL_MASK_MODE (0X0000000f << ACCEL_SHIFT_MODE)
#define ACCEL_MASK_RANGE (0X00000007 << ACCEL_SHIFT_RANGE)
#define ACCEL_MASK_INT (0X00000007 << ACCEL_SHIFT_INT)
#define ACCEL_MASK_DISABLE (0X00000007 << ACCEL_SHIFT_DISABLE)
#define ACCEL_MASK_SOURCE (0X0000003f << ACCEL_SHIFT_SOURCE)
#endif
/* Exported functions ------------------------------------------------------- */
rt_err_t efm_accel_get_data(struct efm32_accel_result_t *data,
rt_bool_t lowResolution);
rt_err_t efm_accel_config(rt_uint32_t config,
rt_uint8_t level_threshold,
rt_uint8_t pulse_threshold,
rt_uint8_t pulse_duration,
rt_uint8_t pulse_latency,
rt_uint8_t pulse_duration2);
rt_err_t efm_accel_auto_zero(rt_uint8_t mode, rt_tick_t period);
rt_err_t efm_accel_init(void);
#endif /*__DEV_ACCEL_H__ */
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