I am trying to send a UDP packet from the TIVA board back to the pc. I am using the UDP echo example and I can do this OK. But I want to be able to send a packet from my main function rather than from the UDP receive function. But when I do this the udp_sendto function crashes. Below is the code. The addr and port vars are what I have saved from the receive function. Anyone know what the issue is? Thanks
void eth_udp_tx() { struct pbuf *p; uint8_t buf[16]; err_t wr_err = ERR_OK; p = pbuf_alloc(PBUF_TRANSPORT, 16, PBUF_POOL); p->len = 16; p->tot_len = 16; p->payload = buf; if (p) { wr_err = udp_sendto(new_udp_pcb, p, udp_addr, udp_port); pbuf_free(p); } }