Library description

Initializes and defines UART and GPIO drivers. It also defines driver functions for UART bus communication which enable barcode scanning and barcode scanner restart. Check the documentation for more details.

Key functions:

uint8_t barcode_readyData() - The function checks whether the RX buffer received new data.

uint8_t barcode_readData() - The function reads and returns one byte which is received in the RX buffer.

void barcode_enableScaning(const uint8_t state) - The function enables or disables barcode scanning, depending on the parameter value.

void barcode_enableReset(const uint8_t state) - The function enables or disables barcode scanner reset, depending on the parameter value.

Examples description

• System Initialization - Initializes peripherals, UART interrupt and pins.
• Application Initialization - Initializes click driver.
• Application Task - The click enables barcode scanning in 2 seconds intervals and then disables scanning also in 2 seconds interval. When the barcode is scanned, UART interrupt will be enabled and the barcode will be stored in the temp buffer.

void applicationTask()
{
    barcode_enableScaning(_BARCODE_LOGIC_ON);
    Delay_ms(2000);
    barcode_enableScaning(_BARCODE_LOGIC_OFF);
    Delay_ms(2000);
}
//UART Interrupt addition function is used for enabling receiving every transived byte.
void RX_ISR() iv IVT_INT_USART3 ics ICS_AUTO
{
   if( RXNE_USART3_SR_bit )
   {
       temp[i++] = USART3_DR;
   }
}

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.