kopia lustrzana https://github.com/pimoroni/pimoroni-pico
83 wiersze
2.9 KiB
C++
83 wiersze
2.9 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 "src/bme280.h"
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#include "src/bme280_defs.h"
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#include "stdio.h"
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#include "common/pimoroni_i2c.hpp"
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namespace pimoroni {
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class BME280 {
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public:
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static const uint8_t DEFAULT_I2C_ADDRESS = 0x76;
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static const uint8_t ALTERNATE_I2C_ADDRESS = 0x77;
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static const uint8_t DEFAULT_INT_PIN = I2C_DEFAULT_INT;
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struct i2c_intf_ptr {
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I2C *i2c;
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int8_t address;
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};
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struct bme280_reading {
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float temperature;
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float pressure;
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float humidity;
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bool status;
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};
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bool debug = false;
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bool init();
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bool configure(uint8_t filter, uint8_t standby_time, uint8_t os_pressure, uint8_t os_temp, uint8_t os_humidity, uint8_t mode=BME280_NORMAL_MODE);
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BME280() : BME280(new I2C()) {}
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BME280(uint8_t address) : BME280(new I2C(), address) {}
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BME280(I2C *i2c, uint8_t address = DEFAULT_I2C_ADDRESS, uint interrupt = PIN_UNUSED) : i2c(i2c), address(address), interrupt(interrupt) {}
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// For print access in micropython
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I2C* get_i2c() const;
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int get_int() const;
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bme280_reading read();
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BME280::bme280_reading read_forced();
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// Bindings for bme280_dev
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static int8_t write_bytes(uint8_t reg_addr, uint8_t *reg_data, uint16_t length, void *intf_ptr) {
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BME280::i2c_intf_ptr* i2c = (BME280::i2c_intf_ptr *)intf_ptr;
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uint8_t buffer[length + 1];
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buffer[0] = reg_addr;
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for(int x = 0; x < length; x++) {
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buffer[x + 1] = reg_data[x];
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}
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int result = i2c->i2c->write_blocking(i2c->address, buffer, length + 1, false);
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return result == PICO_ERROR_GENERIC ? BME280_E_COMM_FAIL : BME280_OK;
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};
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static int8_t read_bytes(uint8_t reg_addr, uint8_t *reg_data, uint16_t length, void *intf_ptr) {
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BME280::i2c_intf_ptr* i2c = (BME280::i2c_intf_ptr *)intf_ptr;
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int result = i2c->i2c->write_blocking(i2c->address, ®_addr, 1, true);
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result = i2c->i2c->read_blocking(i2c->address, reg_data, length, false);
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return result == PICO_ERROR_GENERIC ? BME280_E_COMM_FAIL : BME280_OK;
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};
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static void delay_us(uint32_t period, void *intf_ptr) {
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sleep_us(period);
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}
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private:
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bme280_dev device;
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bme280_settings settings;
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I2C *i2c;
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// interface pins with our standard defaults where appropriate
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int8_t address = DEFAULT_I2C_ADDRESS;
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uint interrupt = DEFAULT_INT_PIN;
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};
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} |