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 count  = 0; // To count the number of 1's

    //If the parity enable is disabled
    if(!ctrl->parity_enable){
        return data;
    }
    //Else the parity enable is enabled
    else{
        uint8_t temp = data;
        //Count the number of 1's
        for(int i = 0; i < 7; i++){
            if(temp & 0x01) count++;
            temp >>= 1;
        }
        //Construction For Even Parity
        if(!ctrl->parity_type){    
            if(count % 2 == 0) return data;
            return (0x80 | data);
        }
        //COnstruction for Odd Parity
        if(ctrl->parity_type){
            if(count % 2 != 0) return data;
            return (0x80 | data);
        }
    }
}

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;
}