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) {
    uint8_t data7 = data & 0x7F;
  if (ctrl->parity_enable == 0) {
        return data7;
    }
    int count = 0;
    uint8_t temp = data7;
    for (int i = 0; i < 7; i++) {
        if ((temp >> i) & 1) {
            count++;
        }
    }
    uint8_t reg;
    if(ctrl->parity_type==0){
    reg=(count%2==0)? 0:1;
    }
    else
    reg=(count%2==0)? 1:0;
    return (reg<<7)|(data&0x7F);
}

int main() {
    uint8_t data;
    scanf("%hhu", &data); 

    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;
}