45. 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];
    buffer[0] = 0xA5; // Start byte
    buffer[1] = command; // Command
    buffer[2] = value & 0xFF; //value low byte
    buffer[3]= (value >> 8) & 0xFF; //value high byte
    buffer[4] = status; // Status
    buffer[5] = checksum & 0xFF; // Checksum byte 1
    buffer[6] = (checksum >> 8) & 0xFF; // Checksum byte 2
    buffer[7] = (checksum >> 16) & 0xFF; // Checksum byte 3
    buffer[8]=  (checksum >> 24) & 0xFF; // Checksum byte 4
    buffer[9] = 0x5A; // End byte
    for(int i = 0; i < 10; i++) {
        printf("%d ", buffer[i]);
    }
}

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

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