temphum18  2.0.0.0
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Temp&Hum 18 click

Temp&Hum 18 Click is a compact add-on board that represents temperature and humidity sensing solutions. This board features the HS3003, a highly accurate, fully calibrated relative humidity and temperature sensor from Renesas. It features proprietary sensor-level protection, ensuring high reliability and long-term stability. Integrated calibration and temperature-compensation logic provides fully corrected RH and temperature values via standard I2C output. No user calibration of the output data is required. The high accuracy, fast measurement response time, and long-term stability make this Click boardâ„¢ ideal for various temperature and humidity-related applications and a vast number of applications ranging from portable devices to products designed for harsh environments.

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Click library

  • Author : Nenad Filipovic
  • Date : Oct 2021.
  • Type : I2C type

Software Support

We provide a library for the TempHum18 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 TempHum18 Click driver.

Standard key functions :

Example key functions :

Example Description

This library contains API for the Temp&Hum 18 Click driver. This demo application shows an example of relative humidity and temperature measurement.

The demo application is composed of two sections :

Application Init

Initialization of I2C module and log UART. After driver initialization and default settings, the app display retrieves the sensor parameters such as temperature and relative humidity.

void application_init ( void )
{
log_cfg_t log_cfg;
temphum18_cfg_t temphum18_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
temphum18_cfg_setup( &temphum18_cfg );
TEMPHUM18_MAP_MIKROBUS( temphum18_cfg, MIKROBUS_1 );
if ( I2C_MASTER_ERROR == temphum18_init( &temphum18, &temphum18_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
if ( TEMPHUM18_ERROR == temphum18_default_cfg ( &temphum18 ) )
{
log_error( &logger, " Default configuration." );
for ( ; ; );
}
log_info( &logger, " Application Task " );
log_printf( &logger, "-------------------------\r\n" );
Delay_ms( 100 );
}

Application Task

This is an example that shows the use of a Temp&Hum 18 Click boardâ„¢. Logs the temperature [ degree Celsius ] and relative humidity [ % ] data. Results are being sent to the Usart Terminal where you can track their changes.

void application_task ( void )
{
static float temperature;
static float humidity;
if ( temphum18_get_temp_hum( &temphum18, TEMPHUM18_RESOLUTION_14_BITS, &temperature, &humidity ) == TEMPHUM18_STATUS_VALID_DATA )
{
log_printf( &logger, " Temperature : %.02f C\r\n Humidity : %.02f %%\r\n", temperature, humidity );
}
else
{
log_printf( &logger, " Measurement Error\r\n\tStale Data\r\n" );
}
log_printf( &logger, "-------------------------\r\n" );
Delay_ms( 1000 );
}

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.TempHum18

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.


temphum18_default_cfg
err_t temphum18_default_cfg(temphum18_t *ctx)
Temp&Hum 18 default configuration function.
temphum18_cfg_t
Temp&Hum 18 Click configuration object.
Definition: temphum18.h:173
TEMPHUM18_RESOLUTION_14_BITS
#define TEMPHUM18_RESOLUTION_14_BITS
Definition: temphum18.h:122
temphum18_get_raw_data
err_t temphum18_get_raw_data(temphum18_t *ctx, uint8_t resolution, int16_t *temp, uint16_t *hum, uint8_t *status)
Temp&Hum 18 get raw data function.
temphum18_wake_up
err_t temphum18_wake_up(temphum18_t *ctx)
Temp&Hum 18 wake up function.
temphum18_get_temp_hum
err_t temphum18_get_temp_hum(temphum18_t *ctx, uint8_t resolution, float *temperature, float *humidity)
Temp&Hum 18 get temperature and humidity function.
TEMPHUM18_ERROR
@ TEMPHUM18_ERROR
Definition: temphum18.h:189
TEMPHUM18_STATUS_VALID_DATA
#define TEMPHUM18_STATUS_VALID_DATA
Temp&Hum 18 description status bits.
Definition: temphum18.h:101
temphum18_cfg_setup
void temphum18_cfg_setup(temphum18_cfg_t *cfg)
Temp&Hum 18 configuration object setup function.
application_task
void application_task(void)
Definition: main.c:72
temphum18_t
Temp&Hum 18 Click context object.
Definition: temphum18.h:159
temphum18_init
err_t temphum18_init(temphum18_t *ctx, temphum18_cfg_t *cfg)
Temp&Hum 18 initialization function.
application_init
void application_init(void)
Definition: main.c:34
TEMPHUM18_MAP_MIKROBUS
#define TEMPHUM18_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: temphum18.h:147