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 count_ones(uint8_t data)
{
    int count =0;
    /*for(int i=0;i<7;i++)
    {
        if((data >> i) & 1)
        {
            count++;
        }
    }*/

    while(data)
    {
        count += data & 1;
        data = data>>1;
    }

    return count;
}

uint8_t create_uart_frame(uint8_t data, UART_Control *ctrl) {
    // Your logic here
    uint8_t uart_frame = 0;
    uint8_t ones = 0, parity_bit=0;

    if(ctrl->parity_enable == 0)
    {
        uart_frame = data & 0x7F;
    }
    else if(ctrl->parity_enable == 1)
    {
        int ones = count_ones(data);
        
        if(ctrl->parity_type == 0)
        {
            parity_bit = (ones % 2 != 0) ? 1 : 0;
        }
        else if(ctrl->parity_type == 1)
        {
            parity_bit = (ones % 2 == 0) ? 1 : 0;
        }
        uart_frame = (parity_bit << 7) | (data & 0x7F);
    }
    return uart_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