Hello,
I am getting output for my second code in this forum ,but first is not working .I am able to build the code and i am using wire shark to verify the answer.
I am using static ip.
My doubt is if lwip is not -rentrant(forum message) weather my udp function which i am calling from main will collapse after some time........Please claer me and my first code is not working
///////1//////////////////////////////////////////////////////////////////
// UDP initialization ......................................
void my_udp_tx(u8_t *data, u16_t len)
{
if (g_upcb->remote_port != (uint16_t)0)
{
struct pbuf *p = pbuf_alloc(PBUF_TRANSPORT,
len, PBUF_RAM);
memcpy(p->payload, data, len);
IP4_ADDR(&udpDestIpAddr,172,17,2,30);
udp_sendto(g_upcb, p,&udpDestIpAddr,1001);
//udp_send(g_upcb, p);
pbuf_free(p);
}
}
void my_udp_rx(void *arg, struct udp_pcb *upcb,struct pbuf *p, struct ip_addr *addr, u16_t port)
{
u8_t buf[145];
int i;
for(i=0;i<45;i++)
{
buf[i]=i;
}
/* process the payload in p->payload */
my_udp_tx(buf,145);
// udp_connect(upcb, addr, port); /* connect to the remote host */
pbuf_free(p); /* don't leak the pbuf! */
}
void my_udp_init(void)
{
g_upcb = udp_new();
udp_bind(g_upcb, IP_ADDR_ANY, 777);
udp_recv(g_upcb, &my_udp_rx, (void *)0);
}
//////////////////////////////////////////////////2///////////////////////////////////////////////////
udp_init();
struct udp_pcb * mypcb;
mypcb = udp_new();
if (mypcb == NULL)
{
UARTprintf("udp failed.\n");
}
else
{
UARTprintf("udp up.\n");
}
if (udp_bind(mypcb, IP_ADDR_ANY, 8760) != ERR_OK)
{
UARTprintf("udp bind failed.\n");
}
MAP_IntPrioritySet(INT_EMAC0, ETHERNET_INT_PRIORITY);
MAP_IntPrioritySet(FAULT_SYSTICK, SYSTICK_INT_PRIORITY);
while(1)
{
//
// Toggle the GPIO
//
MAP_GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_1,
(MAP_GPIOPinRead(GPIO_PORTN_BASE, GPIO_PIN_1) ^
GPIO_PIN_1));
//
// Transmit to UDP
//
static int n = 0;
usprintf(&buf[4],datasram, n++);
pbuf1 = pbuf_alloc(PBUF_TRANSPORT, 100, PBUF_RAM);
pbuf1->payload = (void*)buf;
pbuf1->tot_len = 15;
pbuf1->len = 15;
buf[0] = 0x10;
buf[1] = 0;
//IP4_ADDR(udpDestIpAddr,172,17,2,30);
udp_sendto(mypcb, pbuf1,IP_ADDR_BROADCAST,1001);
pbuf_free(pbuf1);
}
}
Regards,
Krishnan
