2019年10月08日 | STM32F4+FreeRTOS+FreeRTosTcpIp移植教程

花了几天时间完成了FreeRTOS自带的TCP/IP协议栈在stm32F407上的移植，在此记录并分享，第一次写这个，写的不好的地方见谅。

硬件是stm32F407最小系统（内带phy控制器），所以还需要一个phy芯片，选了DP83848这款不带协议栈的芯片。

选了一款淘宝上的以太网模块，内置芯片就是DP83848，只提供RMII接口（mac和phy的通信方式），自带50M振晶

（所以不需要stm32PA8口输出时钟源）。

两者硬件接口如下：

软件方面：

(1)需要完成stm32MAC控制器的初始化。(st库自带有)

(2)需要完成DP83848的驱动。(st库自带有)

(3)FreeRTos和Tcp/IP stack的移植。

(1)创建project

我选的st库是Keil.STM32F4xx_DFP.2.9.0.pack，里面就有关于以太网mac和phy的驱动程序，在keil里面创建工程并添加USER,

FreeRTOS和FreeRTOS-Plus-TCP三个文件夹，最后如下：

Device目录下是stm32外设的库，CMSIS Driver目录下就是关于mac和DP83848的库，这两个驱动的代码请自行结合里面（点击打开链接）

Referance目录下Ethernet interface查看,其实就是C文件里各有一个结构体，里面有一些函数作初始化，读，写等。如下所示

两个控制块里面的函数何时调用，怎么使用，将在后面TCP移植处说明。

这里说一下简单的配置：

1.打开新建工程Device目录下RTE_Device.h文件，查找RTE_ETH宏，修改成1。

2.因为我们要使用RMII接口，所以确保RTE_Device.h下，宏RTE_ETH_MII为0，宏RTE_ETH_RMII为1，并查看一下GPIO的配置，默认如下：

你没修改其他配置的话，请按照上图GPIO配置接好stm32和DP83848。

（2）接下来是freertos的移植：我下载的是FreeRTOSv9.0.0

1.首先看看FreeRTOSv9.0.0里面source目录下的东西：

至少需要tasks，queue，list才能构成freertos的内核，但是因为后面还要移植TCP/IP协议栈，所以其他部分也需要。portable目录里的东西和

硬件平台和编译软件有关，目录里面内容如下：

在这里，我们需要RVDS目录下ARM_CM4F文件夹内的port.c和portmacro.h和MemMang目录下的heap_4.c

2.然后，我们把这些.c和.h添加到工程中的FreeRTOS目录下，现在工程目录如下图所示:

3.最后，我们需要一个配置文件来配置我们FreeRTOS内核的功能,在工程FreeRTOS目录的include文件夹内添加FreeRTOSConfig.h文件，

并将下面代码粘贴进去。

/*

    FreeRTOS V9.0.0 - Copyright (C) 2016 Real Time Engineers Ltd.

    All rights reserved

    VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.

    This file is part of the FreeRTOS distribution.

    FreeRTOS is free software; you can redistribute it and/or modify it under

    the terms of the GNU General Public License (version 2) as published by the

    Free Software Foundation >>>> AND MODIFIED BY <<<< the FreeRTOS exception.

    ***************************************************************************

    >>!   NOTE: The modification to the GPL is included to allow you to     !<<

    >>!   distribute a combined work that includes FreeRTOS without being   !<<

    >>!   obliged to provide the source code for proprietary components     !<<

    >>!   outside of the FreeRTOS kernel.                                   !<<

    ***************************************************************************

    FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY

    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS

    FOR A PARTICULAR PURPOSE.  Full license text is available on the following

    link: http://www.freertos.org/a00114.html

    ***************************************************************************

     *                                                                       *

     *    FreeRTOS provides completely free yet professionally developed,    *

     *    robust, strictly quality controlled, supported, and cross          *

     *    platform software that is more than just the market leader, it     *

     *    is the industry's de facto standard.                               *

     *                                                                       *

     *    Help yourself get started quickly while simultaneously helping     *

     *    to support the FreeRTOS project by purchasing a FreeRTOS           *

     *    tutorial book, reference manual, or both:                          *

     *    http://www.FreeRTOS.org/Documentation                              *

     *                                                                       *

    ***************************************************************************

    http://www.FreeRTOS.org/FAQHelp.html - Having a problem?  Start by reading

    the FAQ page "My application does not run, what could be wrong?".  Have you

    defined configASSERT()?

    http://www.FreeRTOS.org/support - In return for receiving this top quality

    embedded software for free we request you assist our global community by

    participating in the support forum.

    http://www.FreeRTOS.org/training - Investing in training allows your team to

    be as productive as possible as early as possible.  Now you can receive

    FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers

    Ltd, and the world's leading authority on the world's leading RTOS.

    http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,

    including FreeRTOS+Trace - an indispensable productivity tool, a DOS

    compatible FAT file system, and our tiny thread aware UDP/IP stack.

    http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.

    Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.

    http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High

    Integrity Systems ltd. to sell under the OpenRTOS brand.  Low cost OpenRTOS

    licenses offer ticketed support, indemnification and commercial middleware.

    http://www.SafeRTOS.com - High Integrity Systems also provide a safety

    engineered and independently SIL3 certified version for use in safety and

    mission critical applications that require provable dependability.

    1 tab == 4 spaces!

*/

#ifndef FREERTOS_CONFIG_H

#define FREERTOS_CONFIG_H

/*-----------------------------------------------------------

 * Application specific definitions.

 *

 * These definitions should be adjusted for your particular hardware and

 * application requirements.

 *

 * THESE PARAMETERS ARE DESCRIBED WITHIN THE 'CONFIGURATION' SECTION OF THE

 * FreeRTOS API DOCUMENTATION AVAILABLE ON THE FreeRTOS.org WEB SITE.

 *

 * See http://www.freertos.org/a00110.html.

 *----------------------------------------------------------*/

/* Ensure stdint is only used by the compiler, and not the assembler. */

#ifdef __ICCARM__

#include

extern uint32_t SystemCoreClock;

#endif

#define configUSE_PREEMPTION 1

#define configUSE_IDLE_HOOK 0

#define configUSE_TICK_HOOK 0

#define configCPU_CLOCK_HZ ( (uint32_t) 168000000)

#define configTICK_RATE_HZ ( ( TickType_t ) 250 )

#define configMAX_PRIORITIES ( 5 )

#define configMINIMAL_STACK_SIZE ( ( unsigned short ) 130 )

#define configTOTAL_HEAP_SIZE ( ( size_t ) ( 50 * 1024 ) )

#define configMAX_TASK_NAME_LEN ( 16 )

#define configUSE_TRACE_FACILITY 0

#define configUSE_16_BIT_TICKS 0

#define configIDLE_SHOULD_YIELD 1

#define configUSE_MUTEXES 1

//#define configQUEUE_REGISTRY_SIZE 8

//#define configCHECK_FOR_STACK_OVERFLOW 0

//#define configUSE_RECURSIVE_MUTEXES 1

//#define configUSE_MALLOC_FAILED_HOOK 0

//#define configUSE_APPLICATION_TASK_TAG 0

#define configUSE_COUNTING_SEMAPHORES 1

//#define configGENERATE_RUN_TIME_STATS 0

/* Co-routine definitions. */

#define configUSE_CO_ROUTINES 0

#define configMAX_CO_ROUTINE_PRIORITIES ( 2 )

/* Set the following definitions to 1 to include the API function, or zero

to exclude the API function. */

#define INCLUDE_vTaskPrioritySet 1

#define INCLUDE_uxTaskPriorityGet 1

#define INCLUDE_vTaskDelete 1

#define INCLUDE_vTaskCleanUpResources 1

#define INCLUDE_vTaskSuspend 1

#define INCLUDE_vTaskDelayUntil 1

#define INCLUDE_vTaskDelay 1

#define INCLUDE_xEventGroupSetBitsFromISR 1

#define INCLUDE_xTimerPendFunctionCall 1

/* Cortex-M specific definitions. */

#ifdef __NVIC_PRIO_BITS

/* __BVIC_PRIO_BITS will be specified when CMSIS is being used. */

#define configPRIO_BITS        __NVIC_PRIO_BITS

#else

#define configPRIO_BITS        4        /* 15 priority levels */

#endif

/* The lowest interrupt priority that can be used in a call to a "set priority"

function. */

#define configLIBRARY_LOWEST_INTERRUPT_PRIORITY 0xf

/* The highest interrupt priority that can be used by any interrupt service

routine that makes calls to interrupt safe FreeRTOS API functions.  DO NOT CALL

INTERRUPT SAFE FREERTOS API FUNCTIONS FROM ANY INTERRUPT THAT HAS A HIGHER

PRIORITY THAN THIS! (higher priorities are lower numeric values. */

#define configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY 5

/* Interrupt priorities used by the kernel port layer itself.  These are generic

to all Cortex-M ports, and do not rely on any particular library functions. */

#define configKERNEL_INTERRUPT_PRIORITY ( configLIBRARY_LOWEST_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )

/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!