Macro-Based Register Config Helper

#include <stdio.h>
#include <stdint.h>

// Define macros here
#define SET_ENABLE(x,y) x |= (y & 0x01)
#define SET_MODE(x,y) x|= ((y << 1) & 0b00000110)
#define SET_SPEED(x,y) x|= ((y << 3) & 0b00111000)
uint16_t build_register(uint8_t enable, uint8_t mode, uint8_t speed) {
    // Use macros to set fields
    uint16_t result = 0;
    SET_ENABLE(result,enable);
    SET_MODE(result,mode);
    SET_SPEED(result,speed);
    return result;
}

int main() {
    uint8_t enable, mode, speed;
    scanf("%hhu %hhu %hhu", &enable, &mode, &speed);

    uint16_t reg = build_register(enable, mode, speed);
    printf("%u", reg);
    return 0;
}