kopia lustrzana https://github.com/pimoroni/pimoroni-pico
165 wiersze
5.5 KiB
C++
165 wiersze
5.5 KiB
C++
#pragma once
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#include "hardware/i2c.h"
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#include "hardware/gpio.h"
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#include <vector>
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#include <initializer_list>
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#define LTR559_ALS_CONTROL 0x80
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#define LTR559_ALS_CONTROL_GAIN_MASK 0b111
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#define LTR559_ALS_CONTROL_GAIN_SHIFT 2
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#define LTR559_ALS_CONTROL_SW_RESET_BIT 1
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#define LTR559_ALS_CONTROL_MODE_BIT 0
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#define LTR559_PS_CONTROL 0x81
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#define LTR559_PS_CONTROL_SATURATION_INDICATOR_ENABLE_BIT 5
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#define LTR559_PS_CONTROL_ACTIVE_MASK 0b11
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#define LTR559_PS_LED 0x82
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#define LTR559_PS_LED_PULSE_FREQ_MASK 0b111
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#define LTR559_PS_LED_PULSE_FREQ_SHIFT 5
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#define LTR559_PS_LED_DUTY_CYCLE_MASK 0b11
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#define LTR559_PS_LED_DUTY_CYCLE_SHIFT 3
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#define LTR559_PS_LED_CURRENT_MASK 0b111
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#define LTR559_PS_N_PULSES 0x83
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#define LTR559_PS_N_PULSES_MASK 0b1111
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#define LTR559_PS_MEAS_RATE 0x84
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#define LTR559_PS_MEAS_RATE_RATE_MS_MASK 0b1111
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#define LTR559_ALS_MEAS_RATE 0x85
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#define LTR559_ALS_MEAS_RATE_INTEGRATION_TIME_MASK 0b111
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#define LTR559_ALS_MEAS_RATE_INTEGRATION_TIME_SHIFT 3
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#define LTR559_ALS_MEAS_RATE_REPEAT_RATE_MASK 0b111
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#define LTR559_PART_ID 0x86
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#define LTR559_PART_ID_PART_NUMBER_MASK 0b1111
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#define LTR559_PART_ID_PART_NUMBER_SHIFT 4
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#define LTR559_PART_ID_REVISION_MASK 0b1111
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#define LTR559_MANUFACTURER_ID 0x87
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#define LTR559_ALS_DATA 0x88
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#define LTR559_ALS_DATA_CH1 0x88
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#define LTR559_ALS_DATA_CH0 0x8a
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#define LTR559_ALS_PS_STATUS 0x8c
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#define LTR559_ALS_PS_STATUS_INTERRUPT_MASK 0b00001010
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#define LTR559_ALS_PS_STATUS_ALS_DATA_VALID_BIT 7
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#define LTR559_ALS_PS_STATUS_ALS_GAIN_MASK 0b111
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#define LTR559_ALS_PS_STATUS_ALS_GAIN_SHIFT 4
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#define LTR559_ALS_PS_STATUS_ALS_INTERRUPT_BIT 3
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#define LTR559_ALS_PS_STATUS_ALS_DATA_BIT 2
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#define LTR559_ALS_PS_STATUS_PS_INTERRUPT_BIT 1
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#define LTR559_ALS_PS_STATUS_PS_DATA_BIT 0
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#define LTR559_PS_DATA 0x8d
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#define LTR559_PS_DATA_MASK 0x07FF
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#define LTR559_PS_DATA_SATURATION 0x8e
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#define LTR559_PS_DATA_SATURATION_SHIFT 4
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#define LTR559_INTERRUPT 0x8f
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#define LTR559_INTERRUPT_POLARITY_BIT 2
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#define LTR559_INTERRUPT_ALS_PS_MASK 0b11
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#define LTR559_INTERRUPT_PS_BIT 0
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#define LTR559_INTERRUPT_ALS_BIT 1
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#define LTR559_PS_THRESHOLD_UPPER 0x90
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#define LTR559_PS_THRESHOLD_LOWER 0x92
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#define LTR559_PS_OFFSET 0x94
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#define LTR559_PS_OFFSET_MASK 0x03FF
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#define LTR559_ALS_THRESHOLD_UPPER 0x97
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#define LTR559_ALS_THRESHOLD_LOWER 0x99
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#define LTR559_INTERRUPT_PERSIST 0x9e
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#define LTR559_INTERRUPT_PERSIST_PS_MASK 0b1111
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#define LTR559_INTERRUPT_PERSIST_PS_SHIFT 4
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#define LTR559_INTERRUPT_PERSIST_ALS_MASK 0b1111
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#define LTR559_I2C_ADDR 0x23
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#define LTR559_VALID_PART_ID 0x09
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#define LTR559_VALID_REVISION_ID 0x02
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namespace pimoroni {
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typedef struct {
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uint16_t proximity;
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uint16_t als0;
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uint16_t als1;
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uint16_t integration_time;
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uint16_t gain;
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float ratio;
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uint16_t lux;
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} ltr559_reading;
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class lookup {
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private:
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std::vector<uint16_t> lut;
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public:
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lookup(std::initializer_list<uint16_t> values);
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uint8_t index(uint16_t value);
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uint16_t value(uint8_t index);
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};
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class LTR559 {
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public:
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ltr559_reading data;
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LTR559() {};
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LTR559(uint8_t addr) : address(addr) {};
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LTR559(i2c_inst_t *i2c, uint8_t addr, uint8_t sda, uint8_t scl, uint8_t interrupt) :
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i2c(i2c), address(addr), sda(sda), scl(scl), interrupt(interrupt) {};
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int init();
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void reset();
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uint8_t part_id();
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uint8_t revision_id();
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uint8_t manufacturer_id();
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void interrupts(bool light, bool proximity);
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void proximity_led(uint8_t current, uint8_t duty_cycle, uint8_t pulse_freq, uint8_t num_pulses);
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void light_control(bool active, uint8_t gain);
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void proximity_control(bool active, bool saturation_indicator);
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void light_threshold(uint16_t lower, uint16_t upper);
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void proximity_threshold(uint16_t lower, uint16_t upper);
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void light_measurement_rate(uint16_t integration_time, uint16_t rate);
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void proximity_measurement_rate(uint16_t rate);
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void proximity_offset(uint16_t offset);
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bool get_reading();
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private:
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i2c_inst_t *i2c = i2c0;
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// interface pins with our standard defaults where appropriate
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int8_t address = LTR559_I2C_ADDR;
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int8_t sda = 4;
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int8_t scl = 5;
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int8_t interrupt = 22;
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uint16_t bit12_to_uint16(uint16_t value);
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uint16_t uint16_to_bit12(uint16_t value);
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const uint8_t lookup(uint16_t *lookup_table, uint16_t value, uint8_t length);
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const int ch0_c[4] = {17743, 42785, 5926, 0};
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const int ch1_c[4] = {-11059, 19548, -1185, 0};
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static pimoroni::lookup lookup_led_current;
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static pimoroni::lookup lookup_led_duty_cycle;
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static pimoroni::lookup lookup_led_pulse_freq;
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static pimoroni::lookup lookup_proximity_meas_rate;
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static pimoroni::lookup lookup_light_integration_time;
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static pimoroni::lookup lookup_light_repeat_rate;
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static pimoroni::lookup lookup_light_gain;
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// From i2cdevice
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int write_bytes(uint8_t reg, uint8_t *buf, int len);
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int read_bytes(uint8_t reg, uint8_t *buf, int len);
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uint8_t get_bits(uint8_t reg, uint8_t shift, uint8_t mask=0b1);
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void set_bits(uint8_t reg, uint8_t shift, uint8_t mask=0b1);
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void clear_bits(uint8_t reg, uint8_t shift, uint8_t mask=0b1);
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};
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} |