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Author: MIKROE
Last Updated: 2024-10-31
Package Version: 2.1.0.17
mikroSDK Library: 2.0.0.0
Category: Temperature & humidity
Downloaded: 215 times
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License: MIT license
Temp&Hum Click carries ST’s HTS221 temperature and relative humidity sensor.
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DOWNLOAD LINK | RELATED COMPILER | CONTAINS |
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3408_temphum_click.zip [349.66KB] | mikroC AI for ARM GCC for ARM Clang for ARM mikroC AI for PIC mikroC AI for PIC32 XC32 GCC for RISC-V Clang for RISC-V mikroC AI for AVR mikroC AI for dsPIC XC16 |
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Temp&Hum Click carries ST’s HTS221 temperature and relative humidity sensor.
We provide a library for the TempHum 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 form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.
This library contains API for TempHum Click driver.
Config Object Initialization function.
void temphum_cfg_setup ( temphum_cfg_t *cfg );
Initialization function.
TEMPHIM_RETVAL temphum_init ( temphum_t ctx, temphum_cfg_t cfg );
Click Default Configuration function.
void temphum_default_cfg ( temphum_t *ctx );
Function gets temperature value in degrees Celsius [ �C ] and humidity value in percentage [ % ] by reading from the two target 8-bit register address of HTS221 sensor on Temp&Hum Click and converts it by performing linear interpolation on read data.
void temphum_get_temp_hum ( temphum_t ctx, float temperature, float *humidity );
Function get temperature value in degrees Celsius [ �C ] from HTS221 sensor on Temp&Hum Click.
float temphum_get_temperature( temphum_t *ctx );
Function get humidity value in percentage [ % ] from HTS221 sensor on Temp&Hum Click.
float temphum_get_humidity( temphum_t *ctx );
This application measures temperature and humidity, with temperature in range of 0 - 60 deg.
The demo application is composed of two sections :
Initialization driver enable's - I2C, set default configuration and start write log.
void application_init ( void )
{
log_cfg_t log_cfg;
temphum_cfg_t cfg;
/**
* Logger initialization.
* Default baud rate: 115200
* Default log level: LOG_LEVEL_DEBUG
* @note If USB_UART_RX and USB_UART_TX
* are defined as HAL_PIN_NC, you will
* need to define them manually for log to work.
* See @b LOG_MAP_USB_UART macro definition for detailed explanation.
*/
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, "---- Application Init ----" );
// Click initialization.
temphum_cfg_setup( &cfg );
TEMPHIM_MAP_MIKROBUS( cfg, MIKROBUS_1 );
temphum_init( &temphum, &cfg );
temphum_default_cfg( &temphum );
log_printf( &logger, "--------------------------\r\n" );
log_printf( &logger, " Temp&Hum Click \r\n" );
log_printf( &logger, "--------------------------\r\n" );
log_printf( &logger, " Initializing \r\n" );
log_printf( &logger, "--------------------------\r\n" );
Delay_ms ( 100 );
}
This is a example which demonstrates the use of TempAndHum Click board. Measured temperature and humidity data from the HTS221 sensor. Convert temperature data to degrees Celsius [ �C ] and humidity data to percentarg [ % ]. Results are being sent to the Usart Terminal where you can track their changes. All data logs write on usb uart changes for every 3 sec.
void application_task ( void )
{
// Task implementation.
float temperature;
float humidity;
temperature = temphum_get_temperature( &temphum );
humidity = temphum_get_humidity( &temphum );
log_printf( &logger, " Temperature : %.2f C\r\n", temperature );
log_printf( &logger, " Humidity : %.2f %%\r\n", humidity );
log_printf( &logger, "--------------------------\r\n" );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
}
The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.
Other mikroE Libraries used in the example:
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. The terminal available in all Mikroelektronika compilers, or any other terminal application of your choice, can be used to read the message.