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Author: MIKROE
Last Updated: 2024-10-31
Package Version: 2.1.0.5
mikroSDK Library: 2.0.0.0
Category: DMX
Downloaded: 82 times
Not followed.
License: MIT license
DMX Click is a device used to establish communication between the MCU and equipment that uses the DMX512-A communication protocol.
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5395_dmx_click.zip [549.03KB] | 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 dsPIC XC16 |
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DMX Click is a device used to establish communication between the MCU and equipment that uses the DMX512-A communication protocol.
We provide a library for the Dmx 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 Dmx Click driver.
dmx_cfg_setup
Config Object Initialization function.
void dmx_cfg_setup ( dmx_cfg_t *cfg );
dmx_init
Initialization function.
err_t dmx_init ( dmx_t *ctx, dmx_cfg_t *cfg );
dmx_generic_write
Generic write function.
void dmx_generic_write ( dmx_t *ctx, uint8_t *data_buf, uint16_t len );
dmx_generic_read
Generic read function.
err_t dmx_generic_read ( dmx_t *ctx, uint8_t *data_buf, uint16_t max_len );
dmx_send_cmd
Send command function.
void dmx_send_cmd ( dmx_t* ctx, uint8_t *cmd );
This example demonstrates the use of the DMX Click board by showcasing the control for a 6-channel DMX RGB LED reflector connected to it.
The demo application is composed of two sections :
Initializes the driver and performs the Click default configuration.
void application_init ( void )
{
log_cfg_t log_cfg;
dmx_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.
dmx_cfg_setup( &cfg );
DMX_MAP_MIKROBUS( cfg, MIKROBUS_1 );
dmx_init( &dmx, &cfg );
dmx_set_auto_baud_rate( &dmx, 1 );
Delay_ms ( 100 );
dmx_reset( &dmx, DMX_MASTER );
dmx_run( &dmx, DMX_CONFIG_MODE );
Delay_ms ( 100 );
dmx_process( );
dmx_clear_app_buf( );
// Clear the internal buffers
dmx_send_cmd( &dmx, DMX_CMD_PURGEBFR );
dmx_rsp_check( DMX_RSP_OK );
dmx_log_app_buf( );
// Set start address
dmx_send_cmd( &dmx, DMX_CMD_SADR );
dmx_rsp_check( DMX_RSP_OK );
dmx_log_app_buf( );
// Set input data buffer length
dmx_send_cmd( &dmx, DMX_CMD_BLEN );
dmx_rsp_check( DMX_RSP_OK );
dmx_log_app_buf( );
// Set DMX frame length
dmx_send_cmd( &dmx, DMX_CMD_FLEN_MASTER );
dmx_rsp_check( DMX_RSP_OK );
dmx_log_app_buf( );
// Set interrupt pulse duration
dmx_send_cmd( &dmx, DMX_CMD_ITMR );
dmx_rsp_check( DMX_RSP_OK );
dmx_log_app_buf( );
// Set a time delay between two frames
dmx_send_cmd( &dmx, DMX_CMD_FTMR );
dmx_rsp_check( DMX_RSP_OK );
dmx_log_app_buf( );
// Display configuration
dmx_send_cmd( &dmx, DMX_CMD_DISPLCFG );
dmx_rsp_check( DMX_RSP_OK );
dmx_log_app_buf( );
dmx_clear_app_buf( );
dmx_run( &dmx, DMX_RUN_MODE );
log_info( &logger, " Application Task " );
Delay_ms ( 500 );
}
Performs the LEDs dimming control on a 6-channel DMX RGB LED reflector.
void application_task ( void )
{
uint8_t dmx_6_ch_buf[ 6 ] = { 0 };
int16_t cnt = 0;
dmx_6_ch_buf[ 0 ] = 255; // Dimmer
dmx_6_ch_buf[ 1 ] = 0; // Red
dmx_6_ch_buf[ 2 ] = 0; // Green
dmx_6_ch_buf[ 3 ] = 0; // Blue
dmx_6_ch_buf[ 4 ] = 0; // Strobe
dmx_6_ch_buf[ 5 ] = 0; // Macro
log_printf( &logger, "\r\nDimming RED LEDs\r\n" );
for ( cnt = 0; cnt <= 255; cnt++ )
{
dmx_6_ch_buf[ 1 ] = cnt;
dmx_generic_write( &dmx, dmx_6_ch_buf, 6 );
Delay_ms ( 1 );
}
for ( cnt = 255; cnt >= 0; cnt-- )
{
dmx_6_ch_buf[ 1 ] = cnt;
dmx_generic_write( &dmx, dmx_6_ch_buf, 6 );
Delay_ms ( 1 );
}
log_printf( &logger, "Dimming GREEN LEDs\r\n" );
for ( cnt = 0; cnt <= 255; cnt++ )
{
dmx_6_ch_buf[ 2 ] = cnt;
dmx_generic_write( &dmx, dmx_6_ch_buf, 6 );
Delay_ms ( 1 );
}
for ( cnt = 255; cnt >= 0; cnt-- )
{
dmx_6_ch_buf[ 2 ] = cnt;
dmx_generic_write( &dmx, dmx_6_ch_buf, 6 );
Delay_ms ( 1 );
}
log_printf( &logger, "Dimming BLUE LEDs\r\n" );
for ( cnt = 0; cnt <= 255; cnt++ )
{
dmx_6_ch_buf[ 3 ] = cnt;
dmx_generic_write( &dmx, dmx_6_ch_buf, 6 );
Delay_ms ( 1 );
}
for ( cnt = 255; cnt >= 0; cnt-- )
{
dmx_6_ch_buf[ 3 ] = cnt;
dmx_generic_write( &dmx, dmx_6_ch_buf, 6 );
Delay_ms ( 1 );
}
dmx_6_ch_buf[ 1 ] = 255;
dmx_6_ch_buf[ 2 ] = 255;
dmx_6_ch_buf[ 3 ] = 255;
log_printf( &logger, "Dimming all LEDs\r\n" );
for ( cnt = 0; cnt <= 255; cnt++ )
{
dmx_6_ch_buf[ 0 ] = cnt;
dmx_generic_write( &dmx, dmx_6_ch_buf, 6 );
Delay_ms ( 1 );
}
for ( cnt = 255; cnt >= 0; cnt-- )
{
dmx_6_ch_buf[ 0 ] = cnt;
dmx_generic_write( &dmx, dmx_6_ch_buf, 6 );
Delay_ms ( 1 );
}
}
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.