How configure LwIP to receive UDP broadcast using STM32CubeMx ? Hello,I need to receive UDP Broadcast, but The "callback" function is never called. "No broadcast" UDP communication works fine.Is IwIP at all able to receive UDP broadcast?I use LwIP 2.0.3, STM32F407, PHY DP83848/*----- Default Value for IP_SOF_BROADCAST: 0 ---*/
#define IP_SOF_BROADCAST 1
/*----- Default Value for IP_SOF_BROADCAST_RECV: 0 ---*/
#define IP_SOF_BROADCAST_RECV 1
void udp_server_init(void)
{
struct udp_pcb *upcb;
err_t err;
upcb = udp_new();
ip_set_option(upcb, SOF_BROADCAST);
if (upcb)
{
err = udp_bind(upcb, IP_ADDR_BROADCAST, 8000);
if(err == ERR_OK)
{
udp_recv(upcb, udp_receive_callback, NULL);
}
}
}
void udp_receive_callback(void *arg, struct udp_pcb *upcb, struct pbuf *p, const ip_addr_t *addr, u16_t port)
{
HAL_GPIO_TogglePin(GPIOE, GPIO_PIN_2);
pbuf_free(p); // Free the p buffer
//udp_transmit(upcb, addr, udp2_tx_data, udp2_tx_len);
} Thank youPeter
