amiro-lld / include / alld_vcnl4020.h @ e2db16a4
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| 1 | d6728c5b | Thomas Schöpping | /*
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| 2 | AMiRo-LLD is a compilation of low-level hardware drivers for the Autonomous Mini Robot (AMiRo) platform.
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| 3 | Copyright (C) 2016..2018 Thomas Schöpping et al.
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| 4 | |||
| 5 | This program is free software: you can redistribute it and/or modify
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| 6 | it under the terms of the GNU General Public License as published by
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| 7 | the Free Software Foundation, either version 3 of the License, or
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| 8 | (at your option) any later version.
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| 9 | |||
| 10 | This program is distributed in the hope that it will be useful,
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | GNU General Public License for more details.
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| 14 | |||
| 15 | You should have received a copy of the GNU General Public License
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| 16 | along with this program. If not, see <http://www.gnu.org/licenses/>.
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| 17 | */
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| 18 | |||
| 19 | #ifndef _AMIROLLD_VCNL4020_H_
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| 20 | #define _AMIROLLD_VCNL4020_H_
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| 21 | |||
| 22 | #include <amiro-lld.h> |
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| 23 | |||
| 24 | #if defined(AMIROLLD_CFG_USE_VCNL4020) || defined(__DOXYGEN__)
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| 25 | |||
| 26 | /**
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| 27 | * @brief The VCNL4020 driver struct
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| 28 | */
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| 29 | typedef struct { |
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| 30 | apalI2CDriver_t* i2cd; /**< @brief The I2C Driver. */
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| 31 | } VCNL4020Driver; |
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| 32 | |||
| 33 | /**
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| 34 | * @brief Fixed slave address to access the VCNL4020 via I2C.
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| 35 | */
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| 36 | #define VCNL4020_LLD_I2C_ADDR 0x13u |
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| 37 | |||
| 38 | /**
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| 39 | * @brief Maximum frequency for I2C communication.
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| 40 | */
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| 41 | #define VCNL4020_LLD_I2C_MAXFREQUENCY 3400000 |
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| 42 | |||
| 43 | /**
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| 44 | * @brief A falling edge indicates an interrupt.
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| 45 | */
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| 46 | #define VCNL4020_LLD_INT_EDGE APAL_GPIO_EDGE_FALLING
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| 47 | |||
| 48 | /**
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| 49 | * @brief Adresses for the several I/O registers of the VCNL4020.
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| 50 | */
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| 51 | typedef enum { |
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| 52 | VCNL4020_LLD_REGADDR_CMD = 0x80u, /**< command register */ |
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| 53 | VCNL4020_LLD_REGADDR_IDREV = 0x81u, /**< product ID revision register */ |
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| 54 | VCNL4020_LLD_REGADDR_PROXRATE = 0x82u, /**< proximity rate register */ |
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| 55 | VCNL4020_LLD_REGADDR_LEDCURRENT = 0x83u, /**< IR LED current register */ |
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| 56 | VCNL4020_LLD_REGADDR_ALPARAM = 0x84u, /**< ambient light parameter register */ |
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| 57 | VCNL4020_LLD_REGADDR_ALRES_HIGH = 0x85u, /**< ambient light result register (high byte) */ |
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| 58 | VCNL4020_LLD_REGADDR_ALRES_LOW = 0x86u, /**< ambient light result register (low byte) */ |
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| 59 | VCNL4020_LLD_REGADDR_PROXRES_HIGH = 0x87u, /**< proximity result register (high byte) */ |
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| 60 | VCNL4020_LLD_REGADDR_PROXRES_LOW = 0x88u, /**< proximity result register (low byte) */ |
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| 61 | VCNL4020_LLD_REGADDR_INTCTRL = 0x89u, /**< interrupt control register */ |
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| 62 | VCNL4020_LLD_REGADDR_LTH_HIGH = 0x8Au, /**< low threshold register (high byte) */ |
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| 63 | VCNL4020_LLD_REGADDR_LTH_LOW = 0x8Bu, /**< low threshold register (low byte) */ |
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| 64 | VCNL4020_LLD_REGADDR_HTH_HIGH = 0x8Cu, /**< high threshold register (high byte) */ |
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| 65 | VCNL4020_LLD_REGADDR_HTH_LOW = 0x8Du, /**< high threshold register (low byte) */ |
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| 66 | VCNL4020_LLD_REGADDR_INTSTATUS = 0x8Eu, /**< interrupt status register */ |
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| 67 | VCNL4020_LLD_REGADDR_PMTADJ = 0x8Fu, /**< prximity modulator timing adjustment */ |
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| 68 | VCNL4020_LLD_REGADDR_AMBIRLEVEL = 0x90u, /**< ambient IR light level register (not intended to be used) */ |
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| 69 | } vcnl4020_lld_regaddr_t; |
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| 70 | |||
| 71 | /**
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| 72 | * @brief Commands to control the VCNL4020.
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| 73 | */
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| 74 | typedef enum { |
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| 75 | VCNL4020_LLD_CMDREG_CFGLOCK = 0x80u, /**< config lock (read only, constant = 1) */ |
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| 76 | VCNL4020_LLD_CMDREG_ALSRDY = 0x40u, /**< ambient light measurement data ready flag (read only) */ |
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| 77 | VCNL4020_LLD_CMDREG_PROXRDY = 0x20u, /**< proximity measurement data ready flag (read only) */ |
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| 78 | VCNL4020_LLD_CMDREG_ALSOD = 0x10u, /**< start single on-demand ambient light measurement */ |
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| 79 | VCNL4020_LLD_CMDREG_PROXOD = 0x08u, /**< start single on-demand proximity measurement */ |
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| 80 | VCNL4020_LLD_CMDREG_ALSEN = 0x04u, /**< start periodic ambient light measurement */ |
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| 81 | VCNL4020_LLD_CMDREG_PROXEN = 0x02u, /**< start periodic proximity measurement */ |
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| 82 | VCNL4020_LLD_CMDREG_SELFTIMED = 0x01u, /**< enable state-machine and clock for periodic measurement */ |
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| 83 | } vcnl4020_lld_cmdreg_t; |
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| 84 | |||
| 85 | /**
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| 86 | * @brief Masks to read the prodict ID revision register.
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| 87 | */
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| 88 | typedef enum { |
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| 89 | VCNL4020_LLD_IDREVREG_ID_MASK = 0xF0u, /**< product ID (read only, constant = 2) */ |
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| 90 | VCNL4020_LLD_IDREVREG_REV_MASK = 0x0Fu, /**< revision ID (read only, constant = 1) */ |
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| 91 | } vcnl4020_lld_idrevreg_t; |
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| 92 | |||
| 93 | /**
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| 94 | * @brief Frequencies for the proximity sensor of the VCNL4020.
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| 95 | * @note Frequencies are calculated by the formula
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| 96 | * freq = 250Hz / (2 ^ (7 - <value>))
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| 97 | */
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| 98 | typedef enum { |
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| 99 | VCNL4020_LLD_PROXRATEREG_MASK = 0x07u, /**< mask of settable bits */ |
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| 100 | VCNL4020_LLD_PROXRATEREG_1_95_HZ = 0x00u, /**< 1.95Hz sampling rate */ |
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| 101 | VCNL4020_LLD_PROXRATEREG_3_90625_HZ = 0x01u, /**< 3.90625Hz sampling rate */ |
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| 102 | VCNL4020_LLD_PROXRATEREG_7_8125_HZ = 0x02u, /**< 7.8125Hz sampling rate */ |
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| 103 | VCNL4020_LLD_PROXRATEREG_15_625_HZ = 0x03u, /**< 16.625Hz sampling rate */ |
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| 104 | VCNL4020_LLD_PROXRATEREG_31_25_HZ = 0x04u, /**< 31.25Hz sampling rate */ |
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| 105 | VCNL4020_LLD_PROXRATEREG_62_5_HZ = 0x05u, /**< 62.5Hz sampling rate */ |
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| 106 | VCNL4020_LLD_PROXRATEREG_125_HZ = 0x06u, /**< 125Hz sampling rate */ |
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| 107 | VCNL4020_LLD_PROXRATEREG_250_HZ = 0x07u, /**< 250Hz sampling rate */ |
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| 108 | VCNL4020_LLD_PROXRATEREG_DEFAULT = 0x00u, /**< default sampling rate (1.95Hz) */ |
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| 109 | } vcnl4020_lld_proxratereg_t; |
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| 110 | |||
| 111 | /**
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| 112 | * @brief Current for the emmitting IR LED.
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| 113 | * @note The Current is calculated by the formula
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| 114 | * curr = <value> * 10mA
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| 115 | */
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| 116 | typedef enum { |
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| 117 | VCNL4020_LLD_LEDCURRENTREG_FUSEID_MASK = 0xC0u, /**< fuse program revision (read only) */ |
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| 118 | VCNL4020_LLD_LEDCURRENTREG_CURRENT_MASK = 0x3Fu, /**< mask of bits to set the current */ |
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| 119 | VCNL4020_LLD_LEDCURRENTREG_0_mA = 0x00u, /**< 0mA IR LED current */ |
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| 120 | VCNL4020_LLD_LEDCURRENTREG_10_mA = 0x01u, /**< 10mA IR LED current */ |
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| 121 | VCNL4020_LLD_LEDCURRENTREG_20_mA = 0x02u, /**< 20mA IR LED current */ |
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| 122 | VCNL4020_LLD_LEDCURRENTREG_30_mA = 0x03u, /**< 30mA IR LED current */ |
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| 123 | VCNL4020_LLD_LEDCURRENTREG_40_mA = 0x04u, /**< 40mA IR LED current */ |
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| 124 | VCNL4020_LLD_LEDCURRENTREG_50_mA = 0x05u, /**< 50mA IR LED current */ |
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| 125 | VCNL4020_LLD_LEDCURRENTREG_60_mA = 0x06u, /**< 60mA IR LED current */ |
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| 126 | VCNL4020_LLD_LEDCURRENTREG_70_mA = 0x07u, /**< 70mA IR LED current */ |
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| 127 | VCNL4020_LLD_LEDCURRENTREG_80_mA = 0x08u, /**< 80mA IR LED current */ |
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| 128 | VCNL4020_LLD_LEDCURRENTREG_90_mA = 0x09u, /**< 90mA IR LED current */ |
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| 129 | VCNL4020_LLD_LEDCURRENTREG_100_mA = 0x0Au, /**< 100mA IR LED current */ |
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| 130 | VCNL4020_LLD_LEDCURRENTREG_110_mA = 0x0Bu, /**< 110mA IR LED current */ |
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| 131 | VCNL4020_LLD_LEDCURRENTREG_120_mA = 0x0Cu, /**< 120mA IR LED current */ |
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| 132 | VCNL4020_LLD_LEDCURRENTREG_130_mA = 0x0Du, /**< 130mA IR LED current */ |
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| 133 | VCNL4020_LLD_LEDCURRENTREG_140_mA = 0x0Eu, /**< 140mA IR LED current */ |
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| 134 | VCNL4020_LLD_LEDCURRENTREG_150_mA = 0x0Fu, /**< 150mA IR LED current */ |
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| 135 | VCNL4020_LLD_LEDCURRENTREG_160_mA = 0x10u, /**< 160mA IR LED current */ |
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| 136 | VCNL4020_LLD_LEDCURRENTREG_170_mA = 0x11u, /**< 170mA IR LED current */ |
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| 137 | VCNL4020_LLD_LEDCURRENTREG_180_mA = 0x12u, /**< 180mA IR LED current */ |
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| 138 | VCNL4020_LLD_LEDCURRENTREG_190_mA = 0x13u, /**< 190mA IR LED current */ |
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| 139 | VCNL4020_LLD_LEDCURRENTREG_200_mA = 0x14u, /**< 200mA IR LED current */ |
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| 140 | VCNL4020_LLD_LEDCURRENTREG_DEFAULT = 0x02u, /**< default IR LED current (20mA) */ |
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| 141 | } vcnl4020_lld_ledcurrentreg_t; |
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| 142 | |||
| 143 | /**
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| 144 | * @brief Ambient light measurement parameters.
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| 145 | */
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| 146 | typedef enum { |
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| 147 | VCNL4020_LLD_ALPARAMREG_CONTCONV = 0x80u, /**< Continuous conversion mode flag (set = enabled) */ |
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| 148 | VCNL4020_LLD_ALPARAMREG_CONTCONV_DEFAULT = 0x00u, /**< Continuous conversion mode flag default value (disabled)*/ |
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| 149 | VCNL4020_LLD_ALPARAMREG_RATE_MASK = 0x70u, /**< mask of bits to set the measurement rate */ |
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| 150 | VCNL4020_LLD_ALPARAMREG_RATE_1_HZ = 0x00u, /**< 1Hz measurement rate */ |
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| 151 | VCNL4020_LLD_ALPARAMREG_RATE_2_HZ = 0x10u, /**< 2Hz measurement rate */ |
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| 152 | VCNL4020_LLD_ALPARAMREG_RATE_3_HZ = 0x20u, /**< 3Hz measurement rate */ |
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| 153 | VCNL4020_LLD_ALPARAMREG_RATE_4_HZ = 0x30u, /**< 4Hz measurement rate */ |
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| 154 | VCNL4020_LLD_ALPARAMREG_RATE_5_HZ = 0x40u, /**< 5Hz measurement rate */ |
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| 155 | VCNL4020_LLD_ALPARAMREG_RATE_6_HZ = 0x50u, /**< 6Hz measurement rate */ |
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| 156 | VCNL4020_LLD_ALPARAMREG_RATE_8_HZ = 0x60u, /**< 8Hz measurement rate */ |
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| 157 | VCNL4020_LLD_ALPARAMREG_RATE_10_HZ = 0x70u, /**< 10Hz measurement rate */ |
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| 158 | VCNL4020_LLD_ALPARAMREG_RATE_DEFAULT = 0x10u, /**< default measurement rate (2Hz) */ |
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| 159 | VCNL4020_LLD_ALPARAMREG_AUTOOFFSET = 0x08u, /**< Auto offset compensation flag (set = enabled) */ |
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| 160 | VCNL4020_LLD_ALPARAMREG_AUTOOFFSET_DEFAULT = 0x00u, /**< Auto offset compensation flag default value (disabled) */ |
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| 161 | VCNL4020_LLD_ALPARAMREG_AVG_MASK = 0x07u, /**< mask of bits to set the number of measurements for averaging */ |
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| 162 | VCNL4020_LLD_ALPARAMREG_AVG_1_CONV = 0x00u, /**< 1 conversion per measurement */ |
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| 163 | VCNL4020_LLD_ALPARAMREG_AVG_2_CONV = 0x01u, /**< 2 conversions per measurement */ |
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| 164 | VCNL4020_LLD_ALPARAMREG_AVG_4_CONV = 0x02u, /**< 4 conversions per measurement */ |
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| 165 | VCNL4020_LLD_ALPARAMREG_AVG_8_CONV = 0x03u, /**< 8 conversions per measurement */ |
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| 166 | VCNL4020_LLD_ALPARAMREG_AVG_16_CONV = 0x04u, /**< 16 conversions per measurement */ |
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| 167 | VCNL4020_LLD_ALPARAMREG_AVG_32_CONV = 0x05u, /**< 32 conversions per measurement */ |
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| 168 | VCNL4020_LLD_ALPARAMREG_AVG_64_CONV = 0x06u, /**< 64 conversions per measurement */ |
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| 169 | VCNL4020_LLD_ALPARAMREG_AVG_128_CONV = 0x07u, /**< 128 conversions per measurement */ |
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| 170 | VCNL4020_LLD_ALPARAMREG_AVG_DEFAULT = 0x05u, /**< default number of conversions per measurement (32) */ |
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| 171 | } vcnl4020_lld_alparamreg_t; |
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| 172 | |||
| 173 | /**
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| 174 | * @brief Interrupt control commands.
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| 175 | */
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| 176 | typedef enum { |
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| 177 | VCNL4020_LLD_INTCTRLREG_CNT_MASK = 0xE0u, /**< mask of bits to set the count value */ |
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| 178 | VCNL4020_LLD_INTCTRLREG_CNT_1 = 0x00u, /**< 1 measurement above/below the threshold will cause an interrupt */ |
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| 179 | VCNL4020_LLD_INTCTRLREG_CNT_2 = 0x20u, /**< 2 measurements above/below the threshold will cause an interrupt */ |
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| 180 | VCNL4020_LLD_INTCTRLREG_CNT_4 = 0x40u, /**< 4 measurements above/below the threshold will cause an interrupt */ |
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| 181 | VCNL4020_LLD_INTCTRLREG_CNT_8 = 0x60u, /**< 8 measurements above/below the threshold will cause an interrupt */ |
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| 182 | VCNL4020_LLD_INTCTRLREG_CNT_16 = 0x80u, /**< 16 measurements above/below the threshold will cause an interrupt */ |
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| 183 | VCNL4020_LLD_INTCTRLREG_CNT_32 = 0xA0u, /**< 32 measurements above/below the threshold will cause an interrupt */ |
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| 184 | VCNL4020_LLD_INTCTRLREG_CNT_64 = 0xC0u, /**< 64 measurements above/below the threshold will cause an interrupt */ |
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| 185 | VCNL4020_LLD_INTCTRLREG_CNT_128 = 0xE0u, /**< 128 measurements above/below the threshold will cause an interrupt */ |
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| 186 | VCNL4020_LLD_INTCTRLREG_PROXRDY_EN = 0x08u, /**< enable interrupts at proximity data ready */ |
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| 187 | VCNL4020_LLD_INTCTRLREG_ALSRDY_EN = 0x04u, /**< enable interrupt at ambient data ready */ |
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| 188 | VCNL4020_LLD_INTCTRLREG_THRES_EN = 0x02u, /**< enable interrupt when above/below threshold */ |
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| 189 | VCNL4020_LLD_INTCTRLREG_THRES_SEL = 0x01u, /**< select threshold intterrupt source (0 = proximity, 1 = ambient) */ |
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| 190 | } vcnl4020_lld_intctrlreg_t; |
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| 191 | |||
| 192 | /**
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| 193 | * @brief Interrupt status flags.
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| 194 | */
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| 195 | typedef enum { |
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| 196 | VCNL4020_LLD_INTSTATUSREG_PROXRDY = 0x08u, /**< proximity data ready */ |
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| 197 | VCNL4020_LLD_INTSTATUSREG_ALSRDY = 0x04u, /**< ambient light measurement data ready */ |
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| 198 | VCNL4020_LLD_INTSTATUSREG_THLOW = 0x02u, /**< low threshold exceeded */ |
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| 199 | VCNL4020_LLD_INTSTATUSREG_THHIGH = 0x01u, /**< high threshold exceeded */ |
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| 200 | } vcnl4020_lld_intstatusreg_t; |
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| 201 | |||
| 202 | /**
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| 203 | * @brief Proximuty modulation timing adjustment parameters.
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| 204 | */
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| 205 | typedef enum { |
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| 206 | VCNL4020_LLD_PMTADJREG_DELAY_MASK = 0xE0u, /**< mask of bits to set the modulation delay time */ |
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| 207 | VCNL4020_LLD_PMTADJREG_DELAY_DEFAULT = 0x00u, /**< default modulation delay time */ |
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| 208 | VCNL4020_LLD_PMTADJREG_PROXFREQ_MASK = 0x18u, /**< mask of bits to set the signal requency */ |
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| 209 | VCNL4020_LLD_PMTADJREG_PROXFREQ_390_625_KHz = 0x00u, /**< 390.625KHz signal frequency */ |
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| 210 | VCNL4020_LLD_PMTADJREG_PROXFREQ_781_25_KHz = 0x08u, /**< 781.25KHz signal frequency */ |
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| 211 | VCNL4020_LLD_PMTADJREG_PROXFREQ_1562_5_KHz = 0x10u, /**< 1.5625MHz signal frequency */ |
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| 212 | VCNL4020_LLD_PMTADJREG_PROXFREQ_3125_KHz = 0x18u, /**< 3.125MHz signal frequency */ |
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| 213 | VCNL4020_LLD_PMTADJREG_PROXFREQ_DEFAULT = 0x00u, /**< default signal frequency (390.625KHz) */ |
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| 214 | VCNL4020_LLD_PMTADJREG_DEAD_MASK = 0x07u, /**< mask of bits to set the modulation dead time */ |
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| 215 | VCNL4020_LLD_PMTADJREG_DEAD_DEFAULT = 0x01u, /**< default modulation dead time */ |
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| 216 | } vcnl4020_lld_pmtadjreg_t; |
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| 217 | |||
| 218 | #ifdef __cplusplus
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| 219 | extern "C" { |
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| 220 | #endif
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| 221 | apalExitStatus_t vcnl4020_lld_readreg(const VCNL4020Driver* const vcnld, const vcnl4020_lld_regaddr_t reg, uint8_t* const data, const apalTime_t timeout); |
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| 222 | apalExitStatus_t vcnl4020_lld_writereg(const VCNL4020Driver* const vcnld, const vcnl4020_lld_regaddr_t reg, const uint8_t data, const apalTime_t timeout); |
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| 223 | |||
| 224 | apalExitStatus_t vcnl4020_lld_readals(const VCNL4020Driver* const vcnld, uint16_t* const als, const apalTime_t timeout); |
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| 225 | apalExitStatus_t vcnl4020_lld_readprox(const VCNL4020Driver* const vcnld, uint16_t* const prox, const apalTime_t timeout); |
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| 226 | apalExitStatus_t vcnl4020_lld_readalsandprox(const VCNL4020Driver* const vcnld, uint16_t* const als, uint16_t* const prox, const apalTime_t timeout); |
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| 227 | |||
| 228 | apalExitStatus_t vcnl4020_lld_readlth(const VCNL4020Driver* const vcnld, uint16_t* const th, const apalTime_t timeout); |
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| 229 | apalExitStatus_t vcnl4020_lld_readhth(const VCNL4020Driver* const vcnld, uint16_t* const th, const apalTime_t timeout); |
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| 230 | apalExitStatus_t vcnl4020_lld_readth(const VCNL4020Driver* const vcnld, uint16_t* const lth, uint16_t* const hth, const apalTime_t timeout); |
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| 231 | apalExitStatus_t vcnl4020_lld_writelth(const VCNL4020Driver* const vcnld, const uint16_t th, const apalTime_t timeout); |
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| 232 | apalExitStatus_t vcnl4020_lld_writehth(const VCNL4020Driver* const vcnld, const uint16_t th, const apalTime_t timeout); |
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| 233 | apalExitStatus_t vcnl4020_lld_writeth(const VCNL4020Driver* const vcnld, const uint16_t lth, const uint16_t hth, const apalTime_t timeout); |
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| 234 | #ifdef __cplusplus
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| 235 | } |
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| 236 | #endif
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| 237 | |||
| 238 | #endif /* defined(AMIROLLD_CFG_USE_VCNL4020) */ |
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| 239 | |||
| 240 | #endif /* _AMIROLLD_VCNL4020_H_ */ |