Macro-Based Register Config Helper

Code

#include <stdio.h>
#include <stdint.h>
#include <math.h>
// Define macros here
uint16_t r1=0, r2=0;
uint16_t build_register(uint8_t enable, uint8_t mode, uint8_t speed) {
    // Use macros to set fields
    r1=((enable & 0x1)<<0)|((mode & 0x3)<<1)|((speed & 0x7)<<3);
    
    return r1;
}

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