Library Description

The library initializes and defines SPI bus driver and drivers that offer a choice for writing data in registers and reading data from registers. The library includes functions for logging values on the BarGraph display. The user can enable and disable the chip with the function bargraph3_enable(), which is supported in the library.

Key functions:

• void bargraph3_display(uint8_t ctrl, uint8_t dir, uint8_t counter) - Displays function
• void bargraph3_enable(uint8_t state) - Functions for enabling the chip

Examples description

The application is composed of the three sections :

• System Initialization - Initializes SPI module and sets AN, RST, CS and PWM pin as OUTPUT
• Application Initialization - Initialization driver init, enable device and set PWM
• Application Task - (code snippet) - Counter passes through the loop and logs the value of the counter on the bar graph di

void applicationTask()
{
    uint8_t bargraph_cnt;

    for (bargraph_cnt = 0; bargraph_cnt <= 5; bargraph_cnt++)
    {
        bargraph3_display(_BARGRAPH3_INCREASE_LED, _BARGRAPH3_DIRECTION_BOTTOM_TO_TOP, bargraph_cnt);
        Delay_1sec();
    }
}

Other mikroE Libraries used in the example:

• SPI

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.