Library Description

Library performs IR and temperature measurement. The sensor gets an IR picture of the detected object (body) and measures ambient temperature, compares that two measurements and shows the IR picture as a 16x4 matrix. For more details check the documentation.

Key functions:

• float irgrid_getTemperature(uint16_t ptat_data, uint16_t config_reg) - Returns value of ambient temperature.
• void irgrid_getIRArray(uint16_t *pixel_data) - Functions for reading IR pixels.
• void irgrid_measurement(uint8_t *Temperature) - Functions for reading all pixels temperature.

Example description

The application is composed of three sections:

• System Initialization - Initializes I2C module.
• Application Initialization - Initializes driver and IR Grid click.
• Application Task - (code snippet) - Reads pixels of temperature and creates temperature matrix which logs on USB-UART every 3 sec.

void applicationTask()
{
 irgrid_measurement(Temperature);
 mikrobus_logWrite("IR Grid Temperature matrix",_LOG_LINE);

 for (irgrid_cnt = 0; irgrid_cnt < 64; irgrid_cnt++)
 {
 if(irgrid_cnt % 16 == 0)
 {
 mikrobus_logWrite(" ",_LOG_LINE);
 }
 if(Temperature[ irgrid_cnt ] < 36)
 {
 mikrobus_logWrite("/",_LOG_BYTE);
 }
 else
 {
 mikrobus_logWrite("*",_LOG_BYTE);
 }
 Delay_10ms();
 }
 mikrobus_logWrite(" ",_LOG_LINE);
 Delay_ms(3000);
}

Other MikroElektronika libraries used in the example:

• I2C
• UART

Additional notes and information

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.