76. Construct UART Data Frame with Parity Bit

#include <stdio.h>
#include <stdint.h>

typedef struct {
    uint8_t parity_enable : 1;
    uint8_t parity_type   : 1;
    uint8_t reserved      : 6;
} UART_Control;

bool is_parity_even(uint8_t data)
{
    int count =0;
    for(int i=0;i<8;i++)
    {
        if(((data>>i) & 1) == 1)
        {
            count ++;
        }
    }
    if(count%2==0)
    {
        return true;
    }
    else
    {
        return false;
    }
}

uint8_t create_uart_frame(uint8_t data, UART_Control *ctrl) {
    // Your logic here
    uint8_t dat = data;
    if(ctrl->parity_enable == 1)
    {
        bool par = is_parity_even(data);
        if(ctrl->parity_type == 1)
        {
            if(par == true)
            {
                dat|= (1<<7); 
            }
        }
        else
        {
            if(par == false)
            {
                dat|= (1<<7); 
            }
        }
    }
    else
    {

    }

    return dat;
}

int main() {
    uint8_t data;
    scanf("%hhu", &data);  // 7-bit input

    uint8_t parity_enable, parity_type;
    scanf("%hhu %hhu", &parity_enable, &parity_type);

    UART_Control ctrl;
    ctrl.parity_enable = parity_enable;
    ctrl.parity_type = parity_type;

    uint8_t frame = create_uart_frame(data, &ctrl);
    printf("frame = 0x%02X", frame);

    return 0;
}