SIYI A2mini - Output and Display on SIYI Ground Station; Output to Android Device

A2 mini User Manual V1.1
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2023 SIYI Technology Co., Ltd, All Rights Reserved
int main(int argc, char *argv[])
{
int sockfd;
int ret, i, recv_len;
struct sockaddr_in send_addr, recv_addr;
unsigned char send_buf[] = {0x55,0x66,0x01,0x01,0x00,0x00,0x00,0x08,0x01,0xd1,0x12}; // Frame
protocol of the relevant functions in hexadecimal
unsigned char recv_buf[RECV_BUUF_SIZE] = {0};
/* Create UDP Socket
AF_INET: ipv4 addresses
SOCK_DGRAM: UDP protocol
0: automatically choose the default protocol of the relevant type
*/
if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
perror("socket");
exit(1);
}
/* Set IP addresses and port number of gimbal camera
sin_family: ipv4 addresses
sin_addr.s_addr: IP addresses of gimbal camera
sin_port： port of gimbal camera
*/
memset(&send_addr, 0, sizeof(send_addr));
send_addr.sin_family = AF_INET;
send_addr.sin_addr.s_addr = inet_addr(SERVER_IP);
send_addr.sin_port = htons(SERVER_PORT);
/* Send frame data
sockfd: descriptor of socket
send_buf： head address in RAM of the sending data
sizeof(send_buf)： length of sending data
0： sending mark, usually it is 0
(struct sockaddr *)&send_addr: structure pointer of the receiving data addresses
(including IP addresses and port)
addr_len: structure size of the receiving data addresses
*/
printf("Send HEX data\n");
socklen_t addr_len = sizeof(struct sockaddr_in);
if(sendto(sockfd, send_buf, sizeof(send_buf), 0, (struct sockaddr *)&send_addr, addr_len) < 0)
{
perror("sendto");
exit(1);