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. A user can enable and disable the chip with the function bargraph_enable(), which is supported in the library.

Key functions:

• void bargraph_driverInit() - Functions for initializes chip
• void bargraph_display( uint8_t input ) - Display functions
• void bargraph_enable( uint8_t input ) - Functions for enable the chip

Example description

The application is composed of three sections:

• System Initialization -   Initializes SPI module and sets PWM pin, CS pin and RST pin as OUTPUT
• Application Initialization - Initializes driver init and BarGraph init
• Application Task - (code snippet) - Counter passes through the loop and logs the value of the counter on the bargraph display

void applicationTask()
{
 for (cnt = 0; cnt <= 10; cnt++)
 {
 bargraph_display( cnt );
 Delay_ms( 500 );
 }
}

Other MikroElektronika 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.