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; 
    
    uint8_t value_bottom = (value & 0xFF); 
    uint8_t value_top = ((value >> 8) & 0xFF);

    buffer[2] = value_bottom; 
    buffer[3] = value_top; 

    buffer[4] = status; 

    uint8_t checksum_1 = (checksum & 0xFF); 
    uint8_t checksum_2 = ((checksum >> 8) & 0xFF);
    uint8_t checksum_3 = ((checksum >> 16) & 0xFF);
    uint8_t checksum_4 = ((checksum >> 24) & 0xFF);

    buffer[5] = checksum_1; 
    buffer[6] = checksum_2; 
    buffer[7] = checksum_3; 
    buffer[8] = checksum_4; 

    buffer[9] = 0x5A; 
    // Your logic to fill buffer
    // Then print buffer

    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