Library Description

This library helps user to define the all necessary GPIOs to control vibro motor. For Vibro Motor 2 Click board user only needs PWM pin on MIKROBUS. For more details check documentation.

Key functions:

• void vm2_gpioDriverInit( T_VM2_P gpioObj ); - This function initializes GPIO driver.

Examples description

The application is composed of three sections :

• System Initialization - Initializes peripherals and pins.
• Application Initialization - Initializes GPIO driver and PWM. Configures PWM to 20kHz frequency, calculates maximum duty ratio and starts PWM with duty ratio value 0.
• Application Task - (code snippet) - Allows user to enter desired command to control Vibro Motor 2 Click board. The command can be entered from the serial port. The possible commands are :
  • characters from '1' to '9' to set duty ratio step (step = character * 5)
  • character '0' to set duty ratio step on value 100
  • character '+' to increment current duty ratio by selected step
  • character '-' to decrement current duty ratio by selected step
  • characters 'e' and 'E' to start Vibro Motor 2
  • characters 'd' and 'D' to stop Vibro Motor 2
  • characters 's' and 'S' to check Vibro Motor 2 (PWM) status

void applicationTask()
{
    rx_dat = UART_Rdy_Ptr();
    
    if (rx_dat != _RX_NOT_READY)
    {
        rx_dat = UART_Rd_Ptr();
        
        checkRx();
    }
}

Additional Functions :

• checkRx - Executes the command (entered by user) processing.

Other mikroE Libraries used in the example:

• Conversions
• C_String
• PWM
• UART

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.