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];
    int i = 0;
    // Your logic to fill buffer
    buffer[0] = 0xA5;
    buffer[1] = command;
    buffer[2] = (uint8_t)(value) & 0xFF;
    buffer[2] = (uint8_t)(value) & 0xFF;
    buffer[3] = (uint8_t)(value >> 8) & 0xFF;
    buffer[4] = (uint8_t)status;
    buffer[5] = (uint8_t)(checksum & 0xFF);
    buffer[6] = (uint8_t)(checksum >> 8  & 0xFF);
    buffer[7] = (uint8_t)(checksum >> 16 & 0xFF);
    buffer[8] = (uint8_t)(checksum >> 24 & 0xFF);
    buffer[9] = 0x5A;

    while(i<10)
    {
        printf("%d ",buffer[i++]);
    }

    
    // Then print buffer
}

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