/**
@page LwIP_HTTP_Server_Netconn_RTOS LwIP HTTP Server Netconn Application
@verbatim
******************************************************************************
* @file LwIP/LwIP_HTTP_Server_Netconn_RTOS/readme.txt
* @author MCD Application Team
* @brief Description of the LwIP http server Netconn API.
******************************************************************************
* @attention
*
* Copyright (c) 2016 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
@endverbatim
@par Application Description
This application guides STM32Cube HAL API users to run a http server application
based on Netconn API of LwIP TCP/IP stack
The communication is done with a web browser application in a remote PC.
this HTTP server contains two html pages:
+ the first page (home page) is static, it gives information about STM32F7
and LwIP stack.
+ the second page is dynamically refreshed (every 1 s), it shows the RTOS
statistics in runtime
If a DHCP server is available, a dynamic IP address can be allocated by enabling
the DHCP process (#define LWIP_DHCP in lwipopts.h).
If a DHCP server is not available, after timeout connection, the device only gets a static
IP address(the switch from static to dynamic IP address is not available in this application).
Ethernet cable status is ensured by LEDs:
+ LED1: ethernet cable is connected.
+ LED3: ethernet cable is not connected.
Note: In this application the Ethernet Link ISR need the System tick interrupt
to configure the Ethernet MAC, so the Ethernet Link interrupt priority must be
set lower (numerically greater) than the Systick interrupt priority to ensure
that the System tick increments while executing the Ethernet Link ISR.
@note Care must be taken when using HAL_Delay(), this function provides accurate delay (in milliseconds)
based on variable incremented in SysTick ISR. This implies that if HAL_Delay() is called from
a peripheral ISR process, then the SysTick interrupt must have higher priority (numerically lower)
than the peripheral interrupt. Otherwise the caller ISR process will be blocked.
To change the SysTick interrupt priority you have to use HAL_NVIC_SetPriority() function.
@note The application needs to ensure that the SysTick time base is always set to 1 millisecond
to have correct HAL operation.
For more details about this application, refer to UM1713 "STM32Cube interfacing with LwIP and applications"
@par Keywords
Connectivity, LwIP, Ethernet, HTTP Server, Netconn, TCP/IP, FreeRTOS, DHCP
@Note<74>If the user code size exceeds the DTCM-RAM size or starts from internal cacheable memories (SRAM1 and SRAM2),that is shared between several processors,
<20><><A0><A0><A0>then it is highly recommended to enable the CPU cache and maintain its coherence at application level.
<0A><><A0><A0><A0><A0>The address and the size of cacheable buffers (shared between CPU and other masters) must be properly updated to be aligned to cache line size (32 bytes).
@Note It is recommended to enable the cache and maintain its coherence, but depending on the use case
<0A><><A0><A0><A0> It is also possible to configure the MPU as "Write through", to guarantee the write access coherence.
<0A><><A0><A0><A0><A0>In that case, the MPU must be configured as Cacheable/Bufferable/Not Shareable.
<0A><><A0><A0><A0><A0>Even though the user must manage the cache coherence for read accesses.
<0A><><A0><A0><A0><A0>Please refer to the AN4838 <20>Managing memory protection unit (MPU) in STM32 MCUs<55>
<0A><><A0><A0><A0><A0>Please refer to the AN4839 <20>Level 1 cache on STM32F7 Series<65>
@par Directory contents
- LwIP/LwIP_HTTP_Server_Netconn_RTOS/Inc/app_ethernet.h header of app_ethernet.c file
- LwIP/LwIP_HTTP_Server_Netconn_RTOS/Inc/ethernetif.h header for ethernetif.c file
- LwIP/LwIP_HTTP_Server_Netconn_RTOS/Inc/stm32f7xx_hal_conf.h HAL configuration file
- LwIP/LwIP_HTTP_Server_Netconn_RTOS/Inc/stm32f7xx_it.h STM32 interrupt handlers header file
- LwIP/LwIP_HTTP_Server_Netconn_RTOS/Inc/main.h Main program header file
- LwIP/LwIP_HTTP_Server_Netconn_RTOS/Inc/lwipopts.h LwIP stack configuration options
- LwIP/LwIP_HTTP_Server_Netconn_RTOS/Inc/FreeRTOSConfig.h FreeRTOS configuration options
- LwIP/LwIP_HTTP_Server_Netconn_RTOS/Inc/httpserver-netconn.h header for httpserver-netconn.c
- LwIP/LwIP_HTTP_Server_Netconn_RTOS/Src/app_ethernet.c Ethernet specific module
- LwIP/LwIP_HTTP_Server_Netconn_RTOS/Src/stm32f7xx_it.c STM32 interrupt handlers
- LwIP/LwIP_HTTP_Server_Netconn_RTOS/Src/main.c Main program
- LwIP/LwIP_HTTP_Server_Netconn_RTOS/Src/system_stm32f7xx.c STM32F7xx system clock configuration file
- LwIP/LwIP_HTTP_Server_Netconn_RTOS/Src/ethernetif.c Interfacing LwIP to ETH driver
- LwIP/LwIP_HTTP_Server_Netconn_RTOS/Src/httpserver-netconn.c httpserver netconn main thread
- LwIP/LwIP_HTTP_Server_Netconn_RTOS/Src/fsdata_custom.c ROM filesystem data (html pages)
@par Hardware and Software environment
- This application runs on STM32F767ZI devices.
- This application has been tested with the following environments:
- NUCLEO-F767ZI board
- Http clients: Firefox Mozilla (v24) or Microsoft Internet Explorer (v8 and later)
- DHCP server: PC utility TFTPD32 (http://tftpd32.jounin.net/) is used as a DHCP server
- NUCLEO-F767ZI board Set-up
- Connect the nucleo board to remote PC (through a crossover ethernet cable)
or to your local network (through a straight ethernet cable)
- Remote PC Set-up
- Configure a static IP address for your remote PC
for example 192.168.0.11
@par How to use it ?
In order to make the program work, you must do the following :
- Open your preferred toolchain
- Rebuild all files and load your image into target memory
- Check that nucleo board is connected to a remote PC before running the application
- Run the application
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