Decode Status Register into Human-Readable Flags

Code

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

typedef union {
    uint8_t reg;
    struct {
        uint8_t power_on : 1;
        uint8_t power_onerror : 1;
        uint8_t tx_ready : 1;
        uint8_t rx_ready : 1;
        uint8_t overheat : 1;
        uint8_t uv : 1;
        uint8_t timeout : 1;
        uint8_t reserved : 1;
    } bits;
} Register;

void decode_status(uint8_t status_reg) {
    Register reg = { .reg = status_reg };

    if (reg.bits.power_on) {
        printf("Power On\n");
    }
    
    if (reg.bits.power_onerror) {
        printf("Error\n");
    }

    if (reg.bits.tx_ready) {
        printf("Tx Ready\n");
    }

    if (reg.bits.rx_ready) {
        printf("Rx Ready\n");
    }

    if (reg.bits.overheat) {
        printf("Overheat\n");
    }
    
    if (reg.bits.uv) {
        printf("Undervoltage\n");
    }

    if (reg.bits.timeout) {
        printf("Timeout\n");
    }

    if (reg.bits.reserved) {
        printf("Reserved\n");
    }

}

int main() {
    uint8_t reg;
    scanf("%hhu", &reg);
    decode_status(reg);
    return 0;
}

Solving Approach