Library Description

Library contains function for getting INT pin state Library contains function for setting PWM pin state Library contains function for getting data via I2C Library contains function for setting data via I2C Library contains functions for executing general call functions (reset, wake up and software update) Library contains functions for executing fast write, multi write, sequential write and single write commands Library contains functions for setting voltage reference, power mode and gain Library contains function for getting channel reports.

Key functions:

• uint8_t dac4_general_call_reset( void ) - This function executes general call reset command.
• uint8_t dac4_single_write( T_dac_channel_setting * channel_X ) - This function executes single write command.
• uint8_t dac4_data_report( T_dac_channel_setting * channel_buffer ) - This function reads data for all 4 channels, forms a report and stores it into the buffer.

Examples description

The application is composed of three sections :

• System Initialization - Initializes GPIO pins, I2C and LOG modules
• Application Initialization - Initializes I2C driver, executes general call reset and wake up commands and initializes variables to zero
• Application Task - Waits for user input and based on it logs reports or sets output value for specified channel

void applicationTask( )
{
    dac4_check_input( );
    if (message_ok_flag == 1)
    {
        dac4_parse_message( );
        message_ok_flag = 0;
    }
}

Additional Functions :

• dac4_receive_char() - receives single character from UART terminal and stores it into the buffer
• dac4_check_input() - calls dac4_receive_char() function to fill the buffer and checks if received character is correct
• dac4_log_report() - logs channel reports
• dac4_set_output() - sets output channel values
• dac4_parse_message() - parses message stored into the buffer and calls appropriate functions

Other mikroE Libraries used in the example:

• I2C
• UART
• Conversions

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.