dotmatrixr

---

Dot-Matrix R Click

Dot Matrix R Click demo application is developed using the NECTO Studio, ensuring compatibility with mikroSDK's open-source libraries and tools. Designed for plug-and-play implementation and testing, the demo is fully compatible with all development, starter, and mikromedia boards featuring a mikroBUS™ socket.

---

Click Library

• Author : MikroE Team
• Date : Jul 2020.
• Type : SPI type

Software Support

Example Description

This demo application show data on display.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.DotMatrixR

Example Key Functions

• dotmatrixr_cfg_setup Config Object Initialization function.

void dotmatrixr_cfg_setup ( dotmatrixr_cfg_t *cfg );

• dotmatrixr_init Initialization function.

err_t dotmatrixr_init ( dotmatrixr_t *ctx, dotmatrixr_cfg_t *cfg );

• dotmatrixr_set_bl_pin_state Sets BL pin to high or low state.

void dotmatrixr_set_bl_pin_state( dotmatrixr_t *ctx, uint8_t state );

• dotmatrixr_restart Restart device .

void dotmatrixr_restart( dotmatrixr_t *ctx );

• dotmatrixr_write_ascii Sets display to written value.

void dotmatrixr_write_ascii( dotmatrixr_t *ctx, char *ascii_data );

Application Init

Configuration device

void application_init ( void )
{
    log_cfg_t log_cfg;
    dotmatrixr_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.

    dotmatrixr_cfg_setup( &cfg );
    DOTMATRIXR_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    dotmatrixr_init( &dotmatrixr, &cfg );

    Delay_ms ( 100 );
    dotmatrixr_restart( &dotmatrixr );
    Delay_ms ( 500 );
    
    dotmatrixr_set_bl_pin_state( &dotmatrixr, 0 );
    dotmatrixr_set_rs_pin_state( &dotmatrixr, 0 );

    dotmatrixr_ctrl_1( &dotmatrixr, DOTMATRIXR_CTRL_BYTE_1_OSC_PRESCALER_1 |
                       DOTMATRIXR_CTRL_BYTE_1_DOUT_DIN );
    dotmatrixr_ctrl_0( &dotmatrixr, DOTMATRIXR_CTRL_BYTE_0_BRIGHTNESS_30 |
                       DOTMATRIXR_CTRL_BYTE_0_PIXEL_PEAK_CURRENT_9p3mA |
                       DOTMATRIXR_CTRL_BYTE_0_MODE_NORMAL );
}

Application Task

Display shows 3 different data in span of 1 second

void application_task ( void )
{
    dotmatrixr_write_ascii( &dotmatrixr, &demo_t1[ 0 ] );
    Delay_ms ( 1000 );
    dotmatrixr_write_ascii( &dotmatrixr, &demo_t2[ 0 ] );
    Delay_ms ( 1000 );
    dotmatrixr_write_ascii( &dotmatrixr, &demo_t3[ 0 ] );
    Delay_ms ( 1000 );
}

Application Output

This Click board can be interfaced and monitored in two ways:

• Application Output - Use the "Application Output" window in Debug mode for real-time data monitoring. Set it up properly by following this tutorial.
• UART Terminal - Monitor data via the UART Terminal using a USB to UART converter. For detailed instructions, check out this tutorial.

Additional Notes and Information

The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.

---