Construct UART Data Frame with Parity Bit

Code

#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) {
    data&=0x7F;
    if(!(ctrl->parity_enable)){return data;}
    int count=0;
    uint8_t t=data;
    for(int i=0;i<7;i++){
    if(t&1){count++;}
    t=t>>1;}

    if(ctrl->parity_type){
        if(count%2==0){data|=(1<<7);return data;}
        else return data&0x7F;
    }
     if(!(ctrl->parity_type)){
        if(count%2==0){return data&0x7F;}
        else data|=(1<<7);
        return data;
    }
    return 0;
}


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;
}

Solving Approach