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CO2 3 click

CO2 3 Click is a compact add-on board that allows for precise and reliable indoor air quality measurements. This board features XENSIV™ PASCO2V01BUMA1, a highly accurate CO2 sensor module from Infineon Technologies that uses photoacoustic spectroscopy technology to measure indoor air quality. The module comprises a gas measuring cell, an IR emitter, a microphone, and a microcontroller for data processing. Its key components are developed in-house, ensuring the highest quality and performance. Other major characteristics include high accuracy, low power consumption, and versatile configuration options.

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Click library

  • Author : Nenad Filipovic
  • Date : Feb 2023.
  • Type : I2C type

Software Support

We provide a library for the CO2 3 Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Package can be downloaded/installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for CO2 3 Click driver.

Standard key functions :

Example key functions :

Example Description

This library contains API for CO2 3 Click driver. This driver provides the functions for sensor configuration and reading the CO2 gas concentration in the air.

The demo application is composed of two sections :

Application Init

The initialization of I2C or UART module, log UART, and additional pins. After the driver init, the app executes a default configuration.

void application_init ( void )
{
log_cfg_t log_cfg;
co23_cfg_t co23_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
co23_cfg_setup( &co23_cfg );
CO23_MAP_MIKROBUS( co23_cfg, MIKROBUS_1 );
if ( I2C_MASTER_ERROR == co23_init( &co23, &co23_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
Delay_ms ( 100 );
if ( CO23_ERROR == co23_default_cfg ( &co23 ) )
{
log_error( &logger, " Default configuration." );
for ( ; ; );
}
Delay_ms ( 100 );
log_info( &logger, " Application Task " );
log_printf( &logger, "-----------------------\r\n" );
Delay_ms ( 100 );
}

Application Task

This example demonstrates the use of the CO2 3 Click board™. The device starts a single measurement sequence, measures and display air CO2 gas concentration (ppm). Results are being sent to the UART Terminal, where you can track their changes.

void application_task ( void )
{
co23_meas_cfg_t meas_cfg;
co23_set_meas_cfg( &co23, meas_cfg );
Delay_ms ( 1000 );
uint16_t co2_ppm = 0;
co23_get_co2_ppm( &co23, &co2_ppm );
log_printf( &logger, " CO2: %d ppm\r\n", co2_ppm );
log_printf( &logger, "-----------------------\r\n" );
Delay_ms ( 100 );
}

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Other Mikroe Libraries used in the example:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.CO23

Additional notes and informations

Depending on the development board you are using, you may need USB UART click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. UART terminal is available in all MikroElektronika compilers.


co23_cfg_setup
void co23_cfg_setup(co23_cfg_t *cfg)
CO2 3 configuration object setup function.
co23_set_pressure_ref
err_t co23_set_pressure_ref(co23_t *ctx, uint16_t pressure_mbar)
CO2 3 set alarm threshold function.
co23_meas_cfg_t::op_mode
uint8_t op_mode
Definition: co23.h:264
application_task
void application_task(void)
Definition: main.c:73
co23_default_cfg
err_t co23_default_cfg(co23_t *ctx)
CO2 3 default configuration function.
CO23_ERROR
@ CO23_ERROR
Definition: co23.h:316
CO23_OP_MODE_SINGLE
#define CO23_OP_MODE_SINGLE
Definition: co23.h:109
co23_set_meas_cfg
err_t co23_set_meas_cfg(co23_t *ctx, co23_meas_cfg_t meas_cfg)
CO2 3 set measurement configuration function.
co23_s
CO2 3 Click context object.
Definition: co23.h:182
co23_get_co2_ppm
err_t co23_get_co2_ppm(co23_t *ctx, uint16_t *co2_ppm)
CO2 3 get CO2 concentration function.
application_init
void application_init(void)
Definition: main.c:33
co23_cfg_t
CO2 3 Click configuration object.
Definition: co23.h:212
co23_init
err_t co23_init(co23_t *ctx, co23_cfg_t *cfg)
CO2 3 initialization function.
co23_meas_cfg_t
CO2 3 Click measurement configuration object.
Definition: co23.h:260
CO23_MAP_MIKROBUS
#define CO23_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: co23.h:148