hekate/bdk/input/als.h

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/*
* Ambient light sensor driver for Nintendo Switch's Rohm BH1730
*
* Copyright (c) 2018 CTCaer
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __ALS_H_
#define __ALS_H_
#include <utils/types.h>
#define BH1730_I2C_ADDR 0x29
#define BH1730_CMD_MAGIC 0x80
#define BH1730_CMD_SETADDR 0x00
#define BH1730_CMD_SPECCMD 0x60
#define BH1730_SPECCMD_RESET 0x4
#define BH1730_CONTROL_REG 0x00
#define BH1730_CTL_ADC_VALID 0x10
#define BH1730_CTL_ONE_TIME 0x08
#define BH1730_CTL_DAT0_ONLY 0x04
#define BH1730_CTL_ADC_EN 0x02
#define BH1730_CTL_POWER_ON 0x01
#define BH1730_TIMING_REG 0x01
#define BH1730_GAIN_REG 0x07
#define BH1730_GAIN_1X 0x00
#define BH1730_GAIN_2X 0x01
#define BH1730_GAIN_64X 0x02
#define BH1730_GAIN_128X 0x03
#define BH1730_DATA0LOW_REG 0x14
#define BH1730_DATA0HIGH_REG 0x15
#define BH1730_DATA1LOW_REG 0x16
#define BH1730_DATA1HIGH_REG 0x17
2020-11-25 23:41:45 +00:00
#define BH1730_ADDR(reg) (BH1730_CMD_MAGIC | BH1730_CMD_SETADDR | (reg))
#define BH1730_SPEC(cmd) (BH1730_CMD_MAGIC | BH1730_CMD_SPECCMD | (cmd))
typedef struct _als_table_t
{
float lux;
bool over_limit;
u32 vi_light;
u32 ir_light;
u8 gain;
u8 itime;
} als_table_t;
void set_als_cfg(als_table_t *als_val, u8 gain, u8 itime);
void get_als_lux(als_table_t *als_val);
u8 als_init(als_table_t *als_val);
#endif /* __ALS_H_ */