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
    uint8_t fr=0;
    fr=data;
    if(ctrl->parity_enable){
        int onecou=0;
        uint8_t par=1;
        for(int i=0; i<7;i++){
            if(data&par){
                onecou++;
            }
            par=par<<1;
        }
        //printf("%d",onecou);
        if(ctrl->parity_type){//odd
            if(onecou%2){
                //fr=fr|data;
            }
            else{
                fr=(1<<7)|fr;
                //fr=fr|data;
            }
        }

        
        else{ //even
            if(onecou%2){
                fr=(1<<7)|fr;
                //fr=fr|data;
            }
            else{
                //fr=fr|data;
            }

        }
        return fr;        

    }
    else{
        return fr;
    }
    
}

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;
}