Extract Packet Fields from Byte Stream

Code

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

int main(void) {
    uint8_t buffer[6];

    // đọc 6 byte
    for (int i = 0; i < 6; i++) {
        scanf("%hhu", &buffer[i]);
    }

    uint8_t  start   = buffer[0];
    uint8_t  command = buffer[1];
    uint16_t data    = (uint16_t)buffer[2] | ((uint16_t)buffer[3] << 8);
    uint8_t  crc     = buffer[4];
    uint8_t  end     = buffer[5];

    printf("Start: %u\n",   start);
    printf("Command: %u\n", command);
    printf("Data: %u\n",    data);
    printf("CRC: %u\n",     crc);
    printf("End: %u\n",     end);

    return 0;
}
 

Solving Approach