lighttemp  2.0.0.0
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Light Temp click

Light Temp Click is a dual-channel LED driver, designed to be used in tunable Smart Connected Lighting (SCL) applications.

click Product page


Click library

  • Author : Nikola Peric
  • Date : Feb 2022.
  • Type : I2C type

Software Support

We provide a library for the LightTemp 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.

Library Description

This library contains API for LightTemp Click driver.

Standard key functions :

Example key functions :

  • Get INT pin state

    uint8_t lighttemp_get_interrupt_state ( lighttemp_t *ctx );

  • Get voltage

    uint16_t lighttemp_get_pg_voltage ( lighttemp_t *ctx );

  • Start PW2 module.

    void lighttemp_cs_set_state( lighttemp_t *ctx, uint8_t state );

Examples Description

This application controls light intensity of LEDs.

The demo application is composed of two sections :

Application Init

Initialization driver init and pwm init for all LED's

void application_init ( void )
{
log_cfg_t log_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, "---- Application Init ----" );
Delay_ms( 100 );
// Click initialization.
LIGHTTEMP_MAP_MIKROBUS( cfg, MIKROBUS_1 );
lighttemp_init( &lighttemp, &cfg );
lighttemp_led1_set_duty_cycle ( &lighttemp, 0.0 );
lighttemp_led2_set_duty_cycle ( &lighttemp, 0.0 );
log_info( &logger, "---- Application Task ----" );
Delay_ms( 500 );
}

Application Task

This is an example that demonstrates the use of the Light Temp Click board. This example shows the automatic control of the LED light intensity, the first intensity of light is rising and then the intensity of light is falling. Results are being sent to the Usart Terminal where you can track their changes.

void application_task ( void )
{
static int8_t duty_cnt = 1;
static int8_t duty_inc = 1;
float duty = duty_cnt / 10.0;
lighttemp_led1_set_duty_cycle ( &lighttemp, duty );
lighttemp_led2_set_duty_cycle ( &lighttemp, duty );
lighttemp_led1_pwm_start( &lighttemp );
lighttemp_led2_pwm_start( &lighttemp );
log_printf( &logger, "Duty: %d%%\r\n", ( uint16_t )( duty_cnt * 10 ) );
Delay_ms( 500 );
if ( 10 == duty_cnt )
{
duty_inc = -1;
}
else if ( 0 == duty_cnt )
{
duty_inc = 1;
}
duty_cnt += duty_inc;
}

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:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.LightTemp

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.


lighttemp_cfg_t
Click configuration structure definition.
Definition: lighttemp.h:121
lighttemp_led1_set_duty_cycle
void lighttemp_led1_set_duty_cycle(lighttemp_t *ctx, float duty_cycle)
Generic sets PWM duty cycle for LED1.
LIGHTTEMP_MAP_MIKROBUS
#define LIGHTTEMP_MAP_MIKROBUS(cfg, mikrobus)
Definition: lighttemp.h:63
application_task
void application_task(void)
Definition: main.c:71
lighttemp_led1_pwm_start
void lighttemp_led1_pwm_start(lighttemp_t *ctx)
Start PWM module for LED1.
lighttemp_init
LIGHTTEMP_RETVAL lighttemp_init(lighttemp_t *ctx, lighttemp_cfg_t *cfg)
Initialization function.
lighttemp_led2_set_duty_cycle
void lighttemp_led2_set_duty_cycle(lighttemp_t *ctx, float duty_cycle)
Generic sets PWM duty cycle for LED2.
application_init
void application_init(void)
Definition: main.c:38
lighttemp_led2_pwm_start
void lighttemp_led2_pwm_start(lighttemp_t *ctx)
Start PWM module for LED2.
lighttemp_cfg_setup
void lighttemp_cfg_setup(lighttemp_cfg_t *cfg)
Config Object Initialization function.