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];

    // Your logic to fill buffer
    // Then print buffer

    buffer[0]=165;
    buffer[9]=90;
    buffer[1]=command;
    buffer[2] = (value & 0x00ff);
    buffer[3]= (uint8_t)((value & (0xff00))>>8);
    buffer[4] = status;
    buffer[5] = (uint8_t)((checksum &(0xFF)));
    buffer[6] = (uint8_t)((checksum & (0xFF00))>>8);
    buffer[7]= (uint8_t)((checksum & (0xFF0000))>>16);
    buffer[8] = (uint8_t)((checksum & (0xFF000000))>>24);

    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