102 lines
3.3 KiB
C++
102 lines
3.3 KiB
C++
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/*
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* Copyright (c) 2021, Sensirion AG
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* * Neither the name of Sensirion AG nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h> // printf
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#include "scd4x_i2c.h"
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#include "sensirion_common.h"
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#include "sensirion_i2c_hal.h"
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#include "pico/stdlib.h"
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#include "common/pimoroni_i2c.hpp"
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using namespace pimoroni;
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I2C i2c(BOARD::BREAKOUT_GARDEN);
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/**
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* TO USE CONSOLE OUTPUT (PRINTF) IF NOT PRESENT ON YOUR PLATFORM
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*/
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//#define printf(...)
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int main(void) {
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stdio_init_all();
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int16_t error = 0;
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sensirion_i2c_hal_init(&i2c);
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// Clean up potential SCD40 states
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scd4x_wake_up();
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scd4x_stop_periodic_measurement();
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scd4x_reinit();
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uint16_t serial_0;
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uint16_t serial_1;
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uint16_t serial_2;
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error = scd4x_get_serial_number(&serial_0, &serial_1, &serial_2);
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if (error) {
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printf("Error executing scd4x_get_serial_number(): %i\n", error);
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} else {
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printf("serial: 0x%04x%04x%04x\n", serial_0, serial_1, serial_2);
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}
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// Start Measurement
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error = scd4x_start_periodic_measurement();
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if (error) {
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printf("Error executing scd4x_start_periodic_measurement(): %i\n",
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error);
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}
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printf("Waiting for first measurement... (5 sec)\n");
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for (;;) {
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// Read Measurement
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sensirion_i2c_hal_sleep_usec(5000000);
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uint16_t co2;
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int32_t temperature;
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int32_t humidity;
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error = scd4x_read_measurement(&co2, &temperature, &humidity);
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if (error) {
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printf("Error executing scd4x_read_measurement(): %i\n", error);
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} else if (co2 == 0) {
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printf("Invalid sample detected, skipping.\n");
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} else {
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printf("CO2: %u\n", co2);
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printf("Temperature: %ld m°C\n", temperature);
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printf("Humidity: %ld mRH\n", humidity);
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}
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}
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return 0;
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}
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