Library Description

The library includes functions to enable or disable reading pins, reading every single pin or reading all at once. The user has a function to count number of swipes, counter for direction swipes and function for reseting these counters.

Key functions:

• void optoencoder3_Enabler(uint8_t active) - Enables or disables reading
• void optoencoder3_readAllPins(T_OPTOENCODER3_PINS *pins) - Reads state of all pins
• uint8_t optoencoder3_Counter() - Counts number of swipes
• int8_t optoencoder3_DirectionCounter() - Counts number of swipe direction
• void optoencoder3_ResetCounters() - Resets all counters

Examples description

The application is composed of three sections :

• System Initialization - Initialzes gpio
• Application Initialization - Initialization driver init
• Application Task - Waits for valid user input and executes functions based on set of valid commands
• Commands :'1' - first demo '2' - second demo 'r' - reset counters

void applicationTask()
{
    uint8_t dataReady_;
    char receivedData_;
    
    dataReady_ = UART_Rdy_Ptr( );

    if (dataReady_ != 0)
    {
        receivedData_ = UART_Rd_Ptr( );

        switch (receivedData_)
        {
            case '1' :
            {
                taskNum = 1;
                break;
            }
            case '2' :
            {
                taskNum = 2;
                break;
            }
            case 'r' :
            {
                optoencoder3_ResetCounters();
                taskNum = 0;
                break;
            }
        }
    }
    
    if (taskNum == 1)
    {
        _drawPinsStatus();
    }
    else if (taskNum == 2)
    {
        _viewCounters();
    }
    else if (taskNum == 0)
    {
        _infoWrite();
    }
}

Additional Functions :

• void _drawPinsStatus() - Draws state of all pins
• void _viewCounters() - Shows counters value
• void _infoWrite() - Write commands info

Other mikroE Libraries used in the example:

• 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.