Rotary RGB Click is a compact add-on board for creating visual effects and precise position indications. This board features 16 individual RGB LEDs (WS2812B-2020) from Worldsemi and a high-quality rotary encoder (EC12D1564402) from ALPS. The WS2812B-2020 offers low driving voltage, high brightness, and excellent consistency, while the rotary encoder provides accurate 15-pulse incremental encoding with push-button functionality.
- Author : Nenad Filipovic
- Date : Jan 2024.
- Type : GPIO type
We provide a library for the Rotary RGB 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.
This library contains API for Rotary RGB Click driver.
rotaryrgb_cfg_setup
Config Object Initialization function.
void rotaryrgb_cfg_setup ( rotaryrgb_cfg_t *cfg );
rotaryrgb_init
Initialization function.
err_t rotaryrgb_init ( rotaryrgb_t *ctx, rotaryrgb_cfg_t *cfg );
rotaryrgb_set_led_pos_color
This function sets the desired color for the selected LED position
err_t rotaryrgb_set_led_pos_color ( rotaryrgb_t *ctx, uint8_t led_pos, uint32_t led_color );
rotaryrgb_set_all_leds_data
This function, using the GPIO protocol, writes the desired array of 16 elements of data to control all LEDs.
void rotaryrgb_set_all_leds_data ( rotaryrgb_t *ctx, uint32_t *data_in );
rotaryrgb_get_state_switch
This function return rotary encoder switch signal, states of the SW(INT) pin.
uint8_t rotaryrgb_get_state_switch ( rotaryrgb_t *ctx );
This library contains the API for the Rotary RGB Click driver to control LEDs states and a rotary encoder position readings.
The demo application is composed of two sections :
Initialization of GPIO module and log UART. After the driver init, the app turn off all LEDs.
void application_init ( void )
{
log_cfg_t log_cfg; /**< Logger config object. */
rotaryrgb_cfg_t rotaryrgb_cfg; /**< Click config object. */
/**
* 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.
rotaryrgb_cfg_setup( &rotaryrgb_cfg, &rotaryrgb_logic_zero, &rotaryrgb_logic_one );
ROTARYRGB_MAP_MIKROBUS( rotaryrgb_cfg, MIKROBUS_1 );
if ( DIGITAL_OUT_UNSUPPORTED_PIN == rotaryrgb_init( &rotaryrgb, &rotaryrgb_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
rotaryrgb_set_all_led_color( &rotaryrgb, ROTARYRGB_COLOR_OFF );
Delay_ms ( 100 );
log_info( &logger, " Application Task " );
Delay_ms ( 100 );
}
This example demonstrates the use of the Rotary RGB Click board. The demo example shows the functionality of a rotary encoder used to control RGB LEDs. The switch controls the application of the colors, and the encoder mechanism controls the state of the LEDs.
void application_task ( void )
{
rotaryrgb_set_led_pos_color( &rotaryrgb, led_pos % 17, demo_color_table[ led_color_sel ] );
rotaryrgb_switch_detection( );
rotaryrgb_encoder_mechanism( );
}
Make sure the logic delays are defined for your system in the rotaryrgb_delays.h file.
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.RotaryRGB
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.