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;

uint8_t create_uart_frame(uint8_t data, UART_Control *ctrl) {
    // Your logic here
    int i =0;
    int counter = 0;
    uint8_t temp = data;
    if(ctrl->parity_enable == 0)
    {
        data = data & ~(1<<7);
        // return data;
    }
    else
    {
        for (int i =0;i<7;i++)
        {
            if((temp &  1) == 1)
            {
                counter++;
                
            }
            temp = temp>>1;
        }
        // printf("%d", counter);
        if(ctrl->parity_type == 0)
        {
            if(counter%2 == 0)
            {
                data = data & ~(1<<7);
            }
            else
            {
                data = data | (1<<7);
            }
        } 
        else
        {
            if(counter%2 == 0)
            {
                data = data | (1<<7);
                
            }
            else
            {
                data = data & ~(1<<7);
            }
        }  
    }
    return data;
}

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;
}