108 lines
4.2 KiB
C++
108 lines
4.2 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 "bme68x.h"
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#include "bme68x_defs.h"
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#include "common/pimoroni_i2c.hpp"
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#include "stdio.h"
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namespace pimoroni {
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class BME68X {
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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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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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i2c_intf_ptr i2c_interface;
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bool debug = true;
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bool init();
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bool configure(uint8_t filter, uint8_t odr, uint8_t os_humidity, uint8_t os_pressure, uint8_t os_temp);
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bool read_forced(bme68x_data *data, uint16_t heater_temp=300, uint16_t heater_duration=100);
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bool read_parallel(bme68x_data *results, uint16_t *profile_temps, uint16_t *profile_durations, size_t profile_length);
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BME68X() : BME68X(new I2C()) {}
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BME68X(uint8_t address, uint interrupt = PIN_UNUSED) : BME68X(new I2C(), address, interrupt) {}
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BME68X(I2C *i2c, uint8_t address = DEFAULT_I2C_ADDRESS, uint interrupt = PIN_UNUSED) : i2c(i2c), address(address), interrupt(interrupt) {}
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I2C *get_i2c() {return i2c;}
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uint get_int() {return PIN_UNUSED;}
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// Bindings for bme68x_dev
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static int write_bytes(uint8_t reg_addr, uint8_t *reg_data, uint32_t length, void *intf_ptr) {
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BME68X::i2c_intf_ptr* i2c = (BME68X::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(auto x = 0u; 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 ? 1 : 0;
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};
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static int read_bytes(uint8_t reg_addr, uint8_t *reg_data, uint32_t length, void *intf_ptr) {
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BME68X::i2c_intf_ptr* i2c = (BME68X::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 ? 1 : 0;
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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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/* From BME68X API examples/common/common.c */
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void bme68x_check_rslt(const char api_name[], int8_t rslt)
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{
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if(!debug) return;
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switch (rslt)
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{
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case BME68X_OK:
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/* Do nothing */
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break;
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case BME68X_E_NULL_PTR:
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printf("%s: Error [%d] : Null pointer\r\n", api_name, rslt);
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break;
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case BME68X_E_COM_FAIL:
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printf("%s: Error [%d] : Communication failure\r\n", api_name, rslt);
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break;
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case BME68X_E_INVALID_LENGTH:
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printf("%s: Error [%d] : Incorrect length parameter\r\n", api_name, rslt);
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break;
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case BME68X_E_DEV_NOT_FOUND:
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printf("%s: Error [%d] : Device not found\r\n", api_name, rslt);
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break;
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case BME68X_E_SELF_TEST:
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printf("%s: Error [%d] : Self test error\r\n", api_name, rslt);
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break;
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case BME68X_W_NO_NEW_DATA:
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printf("%s: Warning [%d] : No new data found\r\n", api_name, rslt);
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break;
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default:
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printf("%s: Error [%d] : Unknown error code\r\n", api_name, rslt);
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break;
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}
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}
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private:
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bme68x_dev device;
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bme68x_conf conf;
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bme68x_heatr_conf heatr_conf;
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I2C *i2c;
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int8_t address = DEFAULT_I2C_ADDRESS;
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uint interrupt = I2C_DEFAULT_INT;
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};
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} |