After a little debugging , i think i found the main problem,
Firstly it does not matter if we Debug or Run, the main issue is that if the ethernet cable is connected and then the board powers up, i am able to ping the board successfully.
But if i first power up the board, and then insert the ethernet cable, the ping does not succeed.
Yes @Andrew Neil i did try the delay , it did not help!
I tried to debug the issue further:
In the default task , we call MX_LWIP_Init(); once!
void StartDefaultTask(void *argument)
{
/* init code for LWIP */
MX_LWIP_Init();
/* USER CODE BEGIN 5 */
/* Infinite loop */
for(;;)
{
osDelay(1);
}
/* USER CODE END 5 */
}
Here is the MX_LWIP_Init function:
void MX_LWIP_Init(void)
{
/* IP addresses initialization */
IP_ADDRESS[0] = 192;
IP_ADDRESS[1] = 168;
IP_ADDRESS[2] = 1;
IP_ADDRESS[3] = 125;
NETMASK_ADDRESS[0] = 255;
NETMASK_ADDRESS[1] = 255;
NETMASK_ADDRESS[2] = 255;
NETMASK_ADDRESS[3] = 0;
GATEWAY_ADDRESS[0] = 0;
GATEWAY_ADDRESS[1] = 0;
GATEWAY_ADDRESS[2] = 0;
GATEWAY_ADDRESS[3] = 0;
/* USER CODE BEGIN IP_ADDRESSES */
/* USER CODE END IP_ADDRESSES */
/* Initialize the LwIP stack with RTOS */
tcpip_init( NULL, NULL );
/* IP addresses initialization without DHCP (IPv4) */
IP4_ADDR(&ipaddr, IP_ADDRESS[0], IP_ADDRESS[1], IP_ADDRESS[2], IP_ADDRESS[3]);
IP4_ADDR(&netmask, NETMASK_ADDRESS[0], NETMASK_ADDRESS[1] , NETMASK_ADDRESS[2], NETMASK_ADDRESS[3]);
IP4_ADDR(&gw, GATEWAY_ADDRESS[0], GATEWAY_ADDRESS[1], GATEWAY_ADDRESS[2], GATEWAY_ADDRESS[3]);
/* add the network interface (IPv4/IPv6) with RTOS */
netif_add(&gnetif, &ipaddr, &netmask, &gw, NULL, ðernetif_init, &tcpip_input);
/* Registers the default network interface */
netif_set_default(&gnetif);
/* We must always bring the network interface up connection or not... */
netif_set_up(&gnetif);
/* Set the link callback function, this function is called on change of link status*/
netif_set_link_callback(&gnetif, ethernet_link_status_updated);
/* Create the Ethernet link handler thread */
/* USER CODE BEGIN H7_OS_THREAD_NEW_CMSIS_RTOS_V2 */
memset(&attributes, 0x0, sizeof(osThreadAttr_t));
attributes.name = "EthLink";
attributes.stack_size = INTERFACE_THREAD_STACK_SIZE;
attributes.priority = osPriorityAboveNormal;
osThreadNew(ethernet_link_thread, &gnetif, &attributes);
/* USER CODE END H7_OS_THREAD_NEW_CMSIS_RTOS_V2 */
/* USER CODE BEGIN 3 */
/* USER CODE END 3 */
}
The functions ethernet_link_status_updated and the new thread ethernet_link_thread are never called, ever.
I tried setting a dummy variable inside ethernet_link_thread but it is never set and a breakpoint to the same also does not halt the program
static void ethernet_link_status_updated(struct netif *netif)
{
if (netif_is_up(netif))
{
/* USER CODE BEGIN 5 */
HAL_GPIO_WritePin(BLUE_LED_GPIO_Port, BLUE_LED_Pin, GPIO_PIN_SET); //breakpoint here
/* USER CODE END 5 */
}
else /* netif is down */
{
/* USER CODE BEGIN 6 */
HAL_GPIO_WritePin(BLUE_LED_GPIO_Port, BLUE_LED_Pin, GPIO_PIN_RESET); //breakpoint here
/* USER CODE END 6 */
}
}
void ethernet_link_thread(void* argument)
{
++dummy_var; //breakpoint here
ETH_MACConfigTypeDef MACConf = {0};
int32_t PHYLinkState = 0;
uint32_t linkchanged = 0U, speed = 0U, duplex = 0U;
struct netif *netif = (struct netif *) argument;
/* USER CODE BEGIN ETH link init */
/* USER CODE END ETH link init */
for(;;)
{
PHYLinkState = LAN8742_GetLinkState(&LAN8742);
if(netif_is_link_up(netif) && (PHYLinkState <= LAN8742_STATUS_LINK_DOWN))
{
HAL_ETH_Stop_IT(&heth);
netif_set_down(netif);
netif_set_link_down(netif);
}
else if(!netif_is_link_up(netif) && (PHYLinkState > LAN8742_STATUS_LINK_DOWN))
{
switch (PHYLinkState)
{
case LAN8742_STATUS_100MBITS_FULLDUPLEX:
duplex = ETH_FULLDUPLEX_MODE;
speed = ETH_SPEED_100M;
linkchanged = 1;
break;
case LAN8742_STATUS_100MBITS_HALFDUPLEX:
duplex = ETH_HALFDUPLEX_MODE;
speed = ETH_SPEED_100M;
linkchanged = 1;
break;
case LAN8742_STATUS_10MBITS_FULLDUPLEX:
duplex = ETH_FULLDUPLEX_MODE;
speed = ETH_SPEED_10M;
linkchanged = 1;
break;
case LAN8742_STATUS_10MBITS_HALFDUPLEX:
duplex = ETH_HALFDUPLEX_MODE;
speed = ETH_SPEED_10M;
linkchanged = 1;
break;
default:
break;
}
if(linkchanged)
{
/* Get MAC Config MAC */
HAL_ETH_GetMACConfig(&heth, &MACConf);
MACConf.DuplexMode = duplex;
MACConf.Speed = speed;
HAL_ETH_SetMACConfig(&heth, &MACConf);
HAL_ETH_Start_IT(&heth);
netif_set_up(netif);
netif_set_link_up(netif);
}
}
/* USER CODE BEGIN ETH link Thread core code for User BSP */
/* USER CODE END ETH link Thread core code for User BSP */
osDelay(100);
}
}
