125 lines
4 KiB
C
125 lines
4 KiB
C
/*
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* Part of esp-open-rtos
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* Copyright (C) 2016 Brian Schwind (https://github.com/bschwind)
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* BSD Licensed as described in the file LICENSE
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*/
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#ifndef __TSL2561_H__
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#define __TSL2561_H__
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#include <stdint.h>
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#include <stdbool.h>
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// I2C Addresses
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#define TSL2561_I2C_ADDR_VCC 0x49
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#define TSL2561_I2C_ADDR_GND 0x29
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#define TSL2561_I2C_ADDR_FLOAT 0x39 // Default
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// Registers
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#define TSL2561_REG_COMMAND 0x80
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#define TSL2561_REG_CONTROL 0x00
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#define TSL2561_REG_TIMING 0x01
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#define TSL2561_REG_THRESHOLD_LOW_0 0x02
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#define TSL2561_REG_THRESHOLD_LOW_1 0x03
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#define TSL2561_REG_THRESHOLD_HIGH_0 0x04
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#define TSL2561_REG_THRESHOLD_HIGH_1 0x05
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#define TSL2561_REG_INTERRUPT 0x06
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#define TSL2561_REG_PART_ID 0x0A
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#define TSL2561_REG_CHANNEL_0_LOW 0x0C
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#define TSL2561_REG_CHANNEL_0_HIGH 0x0D
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#define TSL2561_REG_CHANNEL_1_LOW 0x0E
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#define TSL2561_REG_CHANNEL_1_HIGH 0x0F
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// TSL2561 Misc Values
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#define TSL2561_ON 0x03
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#define TSL2561_OFF 0x00
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#define TSL2561_READ_WORD 0x20
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// Integration time IDs
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#define TSL2561_INTEGRATION_13MS 0x00
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#define TSL2561_INTEGRATION_101MS 0x01
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#define TSL2561_INTEGRATION_402MS 0x02 // Default
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// Integration times in milliseconds
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#define TSL2561_INTEGRATION_TIME_13MS 20
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#define TSL2561_INTEGRATION_TIME_101MS 110
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#define TSL2561_INTEGRATION_TIME_402MS 410 // Default
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// Gain IDs
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#define TSL2561_GAIN_1X 0x00
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#define TSL2561_GAIN_16X 0x10
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// Calculation constants
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#define LUX_SCALE 14
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#define RATIO_SCALE 9
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#define CH_SCALE 10
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#define CHSCALE_TINT0 0x7517
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#define CHSCALE_TINT1 0x0fe7
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// Package constants
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#define TSL2561_PACKAGE_CS 0x00
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#define TSL2561_PACKAGE_T_FN_CL 0x01
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// Constants from the TSL2561 data sheet
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#define K1T 0x0040 // 0.125 * 2^RATIO_SCALE
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#define B1T 0x01f2 // 0.0304 * 2^LUX_SCALE
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#define M1T 0x01be // 0.0272 * 2^LUX_SCALE
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#define K2T 0x0080 // 0.250 * 2^RATIO_SCALE
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#define B2T 0x0214 // 0.0325 * 2^LUX_SCALE
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#define M2T 0x02d1 // 0.0440 * 2^LUX_SCALE
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#define K3T 0x00c0 // 0.375 * 2^RATIO_SCALE
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#define B3T 0x023f // 0.0351 * 2^LUX_SCALE
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#define M3T 0x037b // 0.0544 * 2^LUX_SCALE
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#define K4T 0x0100 // 0.50 * 2^RATIO_SCALE
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#define B4T 0x0270 // 0.0381 * 2^LUX_SCALE
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#define M4T 0x03fe // 0.0624 * 2^LUX_SCALE
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#define K5T 0x0138 // 0.61 * 2^RATIO_SCALE
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#define B5T 0x016f // 0.0224 * 2^LUX_SCALE
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#define M5T 0x01fc // 0.0310 * 2^LUX_SCALE
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#define K6T 0x019a // 0.80 * 2^RATIO_SCALE
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#define B6T 0x00d2 // 0.0128 * 2^LUX_SCALE
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#define M6T 0x00fb // 0.0153 * 2^LUX_SCALE
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#define K7T 0x029a // 1.3 * 2^RATIO_SCALE
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#define B7T 0x0018 // 0.00146 * 2^LUX_SCALE
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#define M7T 0x0012 // 0.00112 * 2^LUX_SCALE
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#define K8T 0x029a // 1.3 * 2^RATIO_SCALE
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#define B8T 0x0000 // 0.000 * 2^LUX_SCALE
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#define M8T 0x0000 // 0.000 * 2^LUX_SCALE
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#define K1C 0x0043 // 0.130 * 2^RATIO_SCALE
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#define B1C 0x0204 // 0.0315 * 2^LUX_SCALE
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#define M1C 0x01ad // 0.0262 * 2^LUX_SCALE
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#define K2C 0x0085 // 0.260 * 2^RATIO_SCALE
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#define B2C 0x0228 // 0.0337 * 2^LUX_SCALE
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#define M2C 0x02c1 // 0.0430 * 2^LUX_SCALE
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#define K3C 0x00c8 // 0.390 * 2^RATIO_SCALE
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#define B3C 0x0253 // 0.0363 * 2^LUX_SCALE
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#define M3C 0x0363 // 0.0529 * 2^LUX_SCALE
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#define K4C 0x010a // 0.520 * 2^RATIO_SCALE
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#define B4C 0x0282 // 0.0392 * 2^LUX_SCALE
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#define M4C 0x03df // 0.0605 * 2^LUX_SCALE
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#define K5C 0x014d // 0.65 * 2^RATIO_SCALE
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#define B5C 0x0177 // 0.0229 * 2^LUX_SCALE
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#define M5C 0x01dd // 0.0291 * 2^LUX_SCALE
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#define K6C 0x019a // 0.80 * 2^RATIO_SCALE
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#define B6C 0x0101 // 0.0157 * 2^LUX_SCALE
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#define M6C 0x0127 // 0.0180 * 2^LUX_SCALE
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#define K7C 0x029a // 1.3 * 2^RATIO_SCALE
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#define B7C 0x0037 // 0.00338 * 2^LUX_SCALE
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#define M7C 0x002b // 0.00260 * 2^LUX_SCALE
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#define K8C 0x029a // 1.3 * 2^RATIO_SCALE
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#define B8C 0x0000 // 0.000 * 2^LUX_SCALE
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#define M8C 0x0000 // 0.000 * 2^LUX_SCALE
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typedef struct {
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uint8_t i2c_addr;
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uint8_t integration_time;
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uint8_t gain;
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uint8_t package_type;
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} tsl2561_t;
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void tsl2561_init(tsl2561_t *device);
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void tsl2561_set_integration_time(tsl2561_t *device, uint8_t integration_time_id);
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void tsl2561_set_gain(tsl2561_t *device, uint8_t gain);
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bool tsl2561_read_lux(tsl2561_t *device, uint32_t *lux);
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#endif // __TSL2561_H__
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