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

    if(ctrl->parity_type)
    {
        parity_bit = count%2 ? 0 : 1;
    }
    else
    {
        parity_bit = count%2 ? 1 : 0;
    }

    return (parity_bit << 7) | temp;
}

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