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[3]=((value&0xFF00)>>8);
    buffer[2]=value&0xFF;
    buffer[4]=status;
    buffer[8]=((checksum&0xFF000000)>>24);
    buffer[7]=((checksum&0x00FF0000)>>16);
    buffer[6]=((checksum&0x0000FF00)>>8);
    buffer[5]=((checksum&0xFF));
    buffer[9]=0x5A;
    for(int i=0;i<10;i++)
    printf("%d ",buffer[i]);
}

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