Macro-Based Register Config Helper

Code

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

// Define macros here
typedef enum{
    ENABLE_mask = 0x01,
    MODE_mask = 0x03,
    SPEED_mask = 0x07,
    }Register_mask;
typedef enum{
    ENABLE_pos = 0,
    MODE_pos = 1,
    SPEED_pos = 3,
    }Register_pos;
#define _SETFIELD(reg,value,mask,pos) \
 (reg |= ((value & (mask)) << (pos)))


uint16_t build_register(uint8_t enable, uint8_t mode, uint8_t speed) {
    
    uint16_t result = 0;
    _SETFIELD(result,enable,ENABLE_mask,ENABLE_pos);
    _SETFIELD(result,mode,MODE_mask,MODE_pos);
    _SETFIELD(result,speed,SPEED_mask,SPEED_pos);
    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;
}

Solving Approach