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) {
    // Your logic here
    // 1010101
    uint8_t res = 0;

    res |= data & 0x7F;

    if (ctrl-> parity_enable) {
        uint8_t count = 0;
        for (uint8_t i =0; i < 7; i++) {
            count += (data >> i) & 0x01;
        }
        if (!ctrl->parity_type) {
            res |= (count%2 & 0x01) << 7;
        } else {
            res |= (~(count%2 & 0x01)) << 7;
        }
    }
    return res;
}

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