Decode Status Register into Human-Readable Flags

Code

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

#define STA_BIT_POWER_ON     (0x01)
#define STA_BIT_ERROR        (0x02)
#define STA_BIT_TX_READY     (0x04)
#define STA_BIT_RX_READY     (0x08)
#define STA_BIT_OVERHEAT     (0x10)
#define STA_BIT_UNDERVOLT    (0x20)
#define STA_BIT_TIMEOUT      (0x40)
#define STA_BIT_RESERVED     (0x80)

void decode_status(uint8_t status_reg) {
    if (status_reg & STA_BIT_POWER_ON)
        printf("Power On\n");
    if (status_reg & STA_BIT_ERROR)
        printf("Error\n");
    if (status_reg & STA_BIT_TX_READY)
        printf("Tx Ready\n");
    if (status_reg & STA_BIT_RX_READY)
        printf("Rx Ready\n");
    if (status_reg & STA_BIT_OVERHEAT)
        printf("Overheat\n");
    if (status_reg & STA_BIT_UNDERVOLT)
        printf("Undervoltage\n");
    if (status_reg & STA_BIT_TIMEOUT)
        printf("Timeout\n");
    if (status_reg & STA_BIT_RESERVED)
        printf("Reserved\n");
}

int main() {
    uint8_t reg;
    //printf("Enter status register (0-255): ");
    scanf("%hhu", &reg);
    decode_status(reg);
    return 0;
}

Solving Approach