Hi
I'm using this example:
en.stm32cubef7_v1-16-0\STM32Cube_FW_F7_V1.16.0\Projects\STM32F767ZI-Nucleo\Applications\LwIP\LwIP_HTTP_Server_Netconn_RTOS\EWARM
(I have applied patch 1.16.1)
I'm using a Nucleo-144 STM32F767ZI.
The board has a static IP address of 192.168.0.10 with a MAC address of 02:00:00:00:00:00.
I'm getting a strange behaviour...
When the board starts by the IAR debugger or by pressing the Reset button on the board all works fine.
By when I power cycle the board the firmware doesn't work, that is, when I try to show the web page at address 192.168.0.10 I get a connection error after some time.
However if I put a delay before ( see code below for main() ) the initialisation of the LwIP all works. With debugger, with reset and with power cycle.
It also works with 2.5s delay, but not with 1s delay.
The difference I can see in wireshark is when I power cycle without the delay the ARP annoucement shown below is not transmitted by the Nucleo-144.
40175 1124.456115 02:00:00:00:00:00 Broadcast ARP 60 ARP Announcement for 192.168.0.10
Is there any explanation for this?
Instead of a delay can use something else more reliable?
thanks
----------------------------------------------------------------
int main(void)
{
/* Configure the MPU attributes as Device memory for ETH DMA descriptors */
MPU_Config();
/* Enable the CPU Cache */
CPU_CACHE_Enable();
/* STM32F7xx HAL library initialization:
- Configure the Flash ART accelerator on ITCM interface
- Configure the Systick to generate an interrupt each 1 msec
- Set NVIC Group Priority to 4
- Global MSP (MCU Support Package) initialization
*/
HAL_Init();
/* Configure the system clock to 200 MHz */
SystemClock_Config();
/*configure LED1 and LED3 */
BSP_LED_Init(LED1);
BSP_LED_Init(LED2);
BSP_LED_Init(LED3);
BSP_LED_On(LED2);
HAL_Delay ( 5000 ); \\ <<-------------
BSP_LED_Off(LED2);
/* Init thread */
#if defined(__GNUC__)
osThreadDef(Start, StartThread, osPriorityNormal, 0, configMINIMAL_STACK_SIZE * 5);
#else
osThreadDef(Start, StartThread, osPriorityNormal, 0, configMINIMAL_STACK_SIZE * 2);
#endif
osThreadCreate (osThread(Start), NULL);
/* Start scheduler */
osKernelStart();
/* We should never get here as control is now taken by the scheduler */
for( ;; );
}
