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) {
    uint8_t frame = data & (0x7F) ;

    if(ctrl->parity_enable) { 
        int count;
        int temp = frame;
        for(int i = 0; i<7; i++) {
            if(temp & 1) {
                count++;
            }
            temp >>= 1;
        }
        uint8_t parity_bit = 0;
        if(ctrl->parity_type ==0) {
           parity_bit = (count%2 == 0)? 0:1;
        } else{
            parity_bit = (count%2 != 0)? 0:1;
        }
        frame |= (parity_bit << 7);

    } 
     
    return frame;
}

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