×
嵌入式 > 技术百科 > 详情

【MPC5744P】S32DS中Processor Expert自动生成代码工具使用教程(四

发布时间:2024-05-19 发布时间:
|

一、新建项目

新建一个S32SD项目,名称为led_test,芯片选择MPC5744P,SDK选择最新版本,注意不要选择FreeMaster,当前版本自动配置有些问题,我们后面手动配置。若是以后有更新,大家可以添加FreeMaster自动配置试试。

二、Processor Expert配置

新建项目完毕,我们会在项目最底下看到ProcessorExpert.pe文件,在菜单栏显示Processor Expert,可以看到配置项,系统自动将核心配置已经添加进去了。


注意,若是Componets为空,一般是没有选中项目。

由于刚刚接触Processor Expert,为了避免出现错误,我们使用默认的时钟即可。选择pin_mux:PinSettings我们来设置GPIO,来点亮led。假设我们LED为PC11,低电平亮。


1、选择pin_mux:PinSettings,然后选中Component Inspector - pin_mux界面


2、在Routing界面选中Pins,设置PC11引脚功能为GPIO,输出


3、在Functional Properties界面将PC11的初始值为High。


设置完毕后保存,再在Project中选择Generate Processor Expert Code,此时,所有驱动代码生成完毕。

若是还想进行高级设置,例如开漏,上下拉等等,在pin_mux的Functional Properties界面选中Pins选项,就可以设置。

设置完毕,就可以生成代码了(生成完代码仍需要手动调用)。

三、使用自动生成的代码

自动生成了代码不意味着就可以直接编译下载了,生成的只是驱动代码而已,还需要我们去引用。


Processor Expert的自动生成代码思路为:将所有外设的配置变成数组,生成时变化的只是数组,我们可以查看Generated_Code文件夹里面的.c/.h文件,全是配置文件数组。而需要传入这些数据的函数都存于SDK中。


例如我们要初始化时钟。调用clock_MPC57xx.h和cloclMan1.h中的函数和参数即可。设置pin脚也是这样。

我们初始化时钟和引脚,然后延时亮灭led。注意这里led的函数中操作pin和pins是不同的,pin直接写引脚号即可,pins是操作多个引脚,采用的是位控,例如PC11:


pin操作:PINS_DRV_WritePin(PTC, 11,1); //PC11电平拉高


pins操作:PINS_DRV_TogglePins(PTC, (1 << 11)); //PC11电平翻转



main.c代码示例:


注意不同版本SDK函数会略有区别,例如‘SDK1.9.0中就没有CLOCK_SYS_UpdateConfiguration(0U, CLOCK_MANAGER_POLICY_AGREEMENT);了


/*

* Copyright (c) 2013 - 2015, Freescale Semiconductor, Inc.

* Copyright 2016-2017 NXP

* All rights reserved.

*

* THIS SOFTWARE IS PROVIDED BY NXP "AS IS" AND ANY EXPRESSED OR

* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

* IN NO EVENT SHALL NXP OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,

* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING

* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF

* THE POSSIBILITY OF SUCH DAMAGE.

*/

/* ###################################################################

** Filename : main.c

** Processor : MPC574xP

** Abstract :

** Main module.

** This module contains user's application code.

** Settings :

** Contents :

** No public methods

**

** ###################################################################*/

/*!

** @file main.c

** @version 01.00

** @brief

** Main module.

** This module contains user's application code.

*/

/*!

** @addtogroup main_module main module documentation

** @{

*/

/* MODULE main */

/* Including necessary module. Cpu.h contains other modules needed for compiling.*/

#include "Cpu.h"

volatile int exit_code = 0;

/* User includes (#include below this line is not maintained by Processor Expert) */

/*!

brief The main function for the project.

details The startup initialization sequence is the following:

* - startup asm routine

* - main()

*/

uint32_t count=0;

int main(void)

{

/* Write your local variable definition here */

/*** Processor Expert internal initialization. DON'T REMOVE THIS CODE!!! ***/

#ifdef PEX_RTOS_INIT

PEX_RTOS_INIT(); /* Initialization of the selected RTOS. Macro is defined by the RTOS component. */

#endif

/*** End of Processor Expert internal initialization. ***/

/* Write your code here */

/* For example: for(;;) { } */

/* Initialize clock gate*/

CLOCK_SYS_Init(g_clockManConfigsArr, CLOCK_MANAGER_CONFIG_CNT,

g_clockManCallbacksArr, CLOCK_MANAGER_CALLBACK_CNT);

CLOCK_SYS_UpdateConfiguration(0U, CLOCK_MANAGER_POLICY_AGREEMENT);

/* Initialize and configure pins */

PINS_DRV_Init(NUM_OF_CONFIGURED_PINS, g_pin_mux_InitConfigArr);

for(;;)

{

count++;

if(count>800000)

{

count=0;

PINS_DRV_TogglePins(PTC, (1 << 11));

//PINS_DRV_WritePin(PTC, 11);

}

}

/*** Don't write any code pass this line, or it will be deleted during code generation. ***/

/*** RTOS startup code. Macro PEX_RTOS_START is defined by the RTOS component. DON'T MODIFY THIS CODE!!! ***/

#ifdef PEX_RTOS_START

PEX_RTOS_START(); /* Startup of the selected RTOS. Macro is defined by the RTOS component. */

#endif

/*** End of RTOS startup code. ***/

/*** Processor Expert end of main routine. DON'T MODIFY THIS CODE!!! ***/

for(;;) {

if(exit_code != 0) {

break;

}

}

return exit_code;

/*** Processor Expert end of main routine. DON'T WRITE CODE BELOW!!! ***/

} /*** End of main routine. DO NOT MODIFY THIS TEXT!!! ***/

/* END main */

/*!

** @}

*/

/*

** ###################################################################

**

** This file was created by Processor Expert 10.1 [05.21]

** for the NXP C55 series of microcontrollers.

**

** ###################################################################

*/

七、编译下载

注意下载时,选择的要是编译的同一个Interface,Debug就选Debug,而Debug_RAM则要选Debug_RAM。


注意选择你的调试器。


下载完毕,即可看到led在闪烁了。


『本文转载自网络,版权归原作者所有,如有侵权请联系删除』

热门文章 更多
ADI 高精度低功耗精密放大器