Serialized Data Buffer

#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

    // 0: Start byte
    buffer[0] = 0xA5;
    // 1: Command
    buffer[1] = command;
    // 2–3: Value (2 bytes, little-endian)
    buffer[2] = value & 0xFF;
    buffer[3] = (value >> 8) & 0xFF;
    // 4: Status
    buffer[4] = status;
    // 5–8: Checksum (4 bytes, little-endian)
    buffer[5] = checksum & 0xFF;
    buffer[6] = (checksum >> 8) & 0xFF;
    buffer[7] = (checksum >> 16) & 0xFF;
    buffer[8] = (checksum >> 24) & 0xFF;
    // 9: End byte
    buffer[9] = 0x5A;

    // Print the buffer contents
    for (int i = 0; i < 10; i++) 
    {
        printf("%u", buffer[i]);
        if (i != 9) 
            printf(" ");
    }    
}

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;
}