71 lines
2.1 KiB
C++
71 lines
2.1 KiB
C++
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#pragma once
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#include "hardware/i2c.h"
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#include "hardware/gpio.h"
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#define REG_SYSTEM_CONTROL 0x40
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#define REG_MODE_CONTROL1 0x41
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#define REG_MODE_CONTROL2 0x42
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#define REG_MODE_CONTROL3 0x44
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#define REG_COLOUR_DATA 0x50
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#define REG_DINT_DATA 0x58
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#define REG_INTERRUPT 0x60
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#define REG_PERSISTENCE 0x61
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#define REG_THRESHOLD_LOW 0x64
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#define REG_THRESHOLD_HIGH 0x62
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#define REG_MANUFACTURER 0x92
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#define CHIP_ID 0b001011
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#define MANUFACTURER 0xe0
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#define I2C_ADDR 0x38
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#define I2C_ADDR_ALT 0x39
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namespace pimoroni {
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typedef struct {
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uint16_t r;
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uint16_t g;
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uint16_t b;
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uint16_t c;
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} rgbc_t;
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class BH1745 {
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public:
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BH1745() {};
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BH1745(uint8_t addr) : address(addr) {};
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BH1745(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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uint8_t get_chip_id();
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uint8_t get_manufacturer();
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void set_threshold_high(uint16_t value);
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void set_threshold_low(uint16_t value);
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void set_measurement_time_ms(uint16_t value);
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rgbc_t get_rgbc_raw();
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rgbc_t get_rgb_clamped();
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rgbc_t get_rgb_scaled();
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void reset();
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void set_leds(bool state=true);
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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 = 0x38;
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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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float channel_compensation[4] = {2.2f, 1.0f, 1.8f, 10.0f};
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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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}
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