Decode Status Register into Human-Readable Flags

Code

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

void decode_status(uint8_t status_reg) {
    for(int i=0; i<8; i++) {
        int check = status_reg & (1<<i);

        switch(check) {
            case (1<<0):
                printf("Power On\n");
                break;
            case (1<<1):
                printf("Error\n");
                break;
            case (1<<2):
                printf("Tx Ready\n");
                break;
            case (1<<3):
                printf("Rx Ready\n");
                break;
            case (1<<4):
                printf("Overheat\n");
                break;
            case (1<<5):
                printf("Undervoltage\n");
                break;
            case (1<<6):
                printf("Timeout\n");
                break;
            case (1<<7):
                printf("Reserved\n");
                break;
            default:
                break;
        }
    }
}

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

Solving Approach

 

 

 

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Input

13

Expected Output

Power On Tx Ready Rx Ready