UDP connection based on CMSIS library

Parisa Mohamadi said:

But I don't have remote IP and Port number

Obviously, those are essential - you can't send a packet if you don't know where it's going!

Parisa Mohamadi said:

it shows me an error

What, exactly, "shows you an error" ?

And what error, exactly, does "it" show ?

Parisa Mohamadi said:

But I don't have remote IP and Port number

Obviously, those are essential - you can't send a packet if you don't know where it's going!

Parisa Mohamadi said:

it shows me an error

What, exactly, "shows you an error" ?

And what error, exactly, does "it" show ?

I really appreciate your response.

I need to set my device IP Address to 192.168.1.100 and listen to 2050 port. Here is my code:

int main (void){

netInitialize ();
Eth();

while(1){
Sendd();
osDelay(100);

}

}


NET_ADDR4 addrUDP={ NET_ADDR_IP4, 5022, 192, 168, 1, 10 };

uint32_t udp_cb_func (int32_t socket, const NET_ADDR *addr, const uint8_t *buf, uint32_t len) {
	//addrUDP=addr;
	return 0;
}



void Eth(){
	
uint8_t mac_addr [NET_ADDR_ETH_LEN];
uint8_t ip4_addr [NET_ADDR_IP4_LEN];


netIP_aton ("192.168.1.100", NET_ADDR_IP4, ip4_addr);

while (netARP_GetMAC (NET_IF_CLASS_ETH | 0, ip4_addr, mac_addr) != netOK) {
  netARP_CacheIP (NET_IF_CLASS_ETH | 0, ip4_addr, netARP_CacheTemporaryIP);
  osDelay (1000);
}

socket = netUDP_GetSocket(udp_cb_func);
if (socket >= 0) {
netUDP_Open(socket, 2050);
}


void Sendd(void){

				sendbuf =  netUDP_GetBuffer (Ether.DataSize);
				State=netUDP_Send (socket,(NET_ADDR *)&addrUDP, sendbuf,Ether.DataSize);	
				
				if(State!=netOK){
					netUDP_Close(socket);
					socket = netUDP_GetSocket(udp_cb_func);
					if (socket >= 0) {
								netUDP_Open(socket, 2050);
								netUDP_SetOption (socket, netUDP_OptionTTL, 2);
						}
					}
}

After programming, I can ping my device( 192.168.1.100 is alive). But I need to do two different strategies:

1)Obtaining remote IP address without inserting in my code (192.168.1.10)

2)Send a UDP package.

I really appreciate your response.

I have set my device to 192.168.1.100 and it is activated in my network( it responds to ping command). But I cant received anything. Here is my code

int main (void){

netInitialize ();
Eth();

while(1){
Sendd();
osDelay(100);

}

}


NET_ADDR4 addrUDP={ NET_ADDR_IP4, 5022, 192, 168, 1, 10 };

uint32_t udp_cb_func (int32_t socket, const NET_ADDR *addr, const uint8_t *buf, uint32_t len) {
	//addrUDP=addr;
	return 0;
}



void Eth(){
	
uint8_t mac_addr [NET_ADDR_ETH_LEN];
uint8_t ip4_addr [NET_ADDR_IP4_LEN];


netIP_aton ("192.168.1.100", NET_ADDR_IP4, ip4_addr);

while (netARP_GetMAC (NET_IF_CLASS_ETH | 0, ip4_addr, mac_addr) != netOK) {
  netARP_CacheIP (NET_IF_CLASS_ETH | 0, ip4_addr, netARP_CacheTemporaryIP);
  osDelay (1000);
}

socket = netUDP_GetSocket(udp_cb_func);
if (socket >= 0) {
netUDP_Open(socket, 2050);
}


void Sendd(void){

				
				sprintf(buf,"H%d",1);
				sendbuf =  netUDP_GetBuffer (2);
				State=netUDP_Send (socket,(NET_ADDR *)&addrUDP, buf,2);	
				
				if(State!=netOK){
					netUDP_Close(socket);
					socket = netUDP_GetSocket(udp_cb_func);
					if (socket >= 0) {
								netUDP_Open(socket, 2050);
								netUDP_SetOption (socket, netUDP_OptionTTL, 2);
						}
					}
}

I need to do two work.

1) Obtaining remote IP address without inserting into my code (192.168.1.10)

2) Sending a simple UDP package.

So what's the error, that you're trying to set an array to a pointer? Perhaps you should be copying the content? Perhaps the pointer is dynamic/temporal in nature?