Serialized Data Buffer

Code

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

void build_packet(uint8_t command, uint16_t value, uint8_t status, uint32_t checksum) {
    uint8_t buffer[10];
    buffer[0] = 0xA5;
    buffer[1] = command;
    buffer[2] =  (value>>0) &(0xFF);
    buffer[3] =  (value>>8) &(0xFF);
    buffer[4]=  status;
    buffer[5] = (checksum>>0) & (0xFF);
    buffer[6] = (checksum>>8) & (0xFF);
    buffer[7] = (checksum>>16) & (0xFF);
    buffer[8] = (checksum>>24) & (0xFF);
    buffer[9] = 0x5A;

    for (int i = 0; i < 10; i++) {
        printf("%d ", buffer[i]);
    }
    printf("\n");
}



int main() {
    uint8_t cmd, status;
    uint16_t val;
    uint32_t crc;

    scanf("%hhu %hu %hhu %u", &cmd, &val, &status, &crc);
    build_packet(cmd, val, status, crc);
    return 0;
}

Solving Approach