嵌入式系统设计课设报告分析解析.docx
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嵌入式系统设计课设报告分析解析
福州大学
《嵌入式系统设计课设》
报告书
题目:
基于28027的虚拟系统
姓名:
学号:
学院:
电气工程与自动化学院
专业:
电气工程与自动化
年级:
起讫日期:
指导教师:
1、课程设计目的1
2、课程设计题目和实现目标1
3、设计方案1
4、程序流程图1
5、程序代码1
6、调试总结1
7、设计心得体会1
8、参考文献1
1、课程设计目的
《嵌入式系统设计课设》是与《嵌入式系统设计》课程相配套的实践教学环节。
《嵌入式系统设计》是一门实践性很强的专业基础课,通过课程设计,达到进一步理解嵌入式芯片的硬件、软件和综合应用方面的知识,培养实践能力和综合应用能力,开拓学习积极性、主动性,学会灵活运用已经学过的知识,并能不断接受新的知识。
培养大胆发明创造的设计理念,为今后就业打下良好的基础。
通过课程设计,掌握以下知识和技能:
1.嵌入式应用系统的总体方案的设计;
2.嵌入式应用系统的硬件设计;
3.嵌入式应用系统的软件程序设计;
4.嵌入式开发系统的应用和调试能力
2、课程设计题目和实现目标
课程设计题目:
任务要求:
A、利用28027的片上温度传感器,检测当前温度;
B、通过PWM过零中断作为温度检测A/D的触发,在PWM中断时完成温度采样和下一周期PWM占空比的修正;PWM频率为1K;
C、利用按键作为温度给定;温度给定变化从10度到40度。
D、当检测温度超过给定时,PWM占空比增减小(减小幅度自己设定);当检测温度小于给定时,PWM占空比增大(增大幅度自己设定);
E、把PWM输出接到捕获口,利用捕获口测量当前PWM的占空比;
F、把E测量的PWM占空比通过串口通信发送给上位机;
3、设计方案-----介绍系统实现方案和系统原理图
①系统实现方案:
任务A:
利用ADC模块通道A5获取当前环境温度。
任务B:
PWM过零触发ADC模块,在PWM中断服务函数中,将当前环境温度和按键设定温度进行比较,并按照任务D的要求修订PWM占空比。
PWM频率为1KHZ:
根据关系式:
TBCLK=SYSCLKOUT/(HSPCLKDIV*CLKDIV)
取SYSCLKOUT=60MHZ,HSPCLKDIV=6,CLKDIV=1,求得
TBCLK=10MHZ。
将period设为10K,便得到1KHZ的PWM波。
任务C:
用KEY模块的中断实现温度给定。
任务D:
在PWM的周期结束产生的中断中,通过改变比较点CMPA的位置来改变PWM占空比的大小。
任务E:
利用CAP模块设置3个捕获点捕获PWM的上升沿和下降沿,计算得到PWM波的占空比。
任务F:
利用SCI模块实现串口通信将温度和占空比上传到上位机。
此外,各模块的配置都与GPIO模块有关。
②系统原理图:
28027C2000PiccoloLaunchpad原理图
4、程序流程--------各个模块的流程图
5、程序代码
①/*app.c*/
//theincludes
#include"Application/app.h"
//**************************************************************************
//thedefines
//theglobals
//thefunctions
voiddelay(uint32_ttime)
{
while(time--);
}
//延时函数
//endoffile
②/*isr.c*/
#include"Application/isr.h"
interruptvoidLED_PWM_isr(void)//PWM的中断服务函数
if(MY_ADC{mycmp-=100*(SET_TEMP-MY_ADC);//PWM占空比增大}else{mycmp+=100*(MY_ADC-SET_TEMP);//环境检测温度大于设定温度//PWM占空比减小}PWM_setCmpA(myPwm1,mycmp);//设定CmpA值PWM_clearIntFlag(myPwm1);//清零PWM中断标志位PIE_clearInt(myPie,PIE_GroupNumber_3);//清零PIE中断标志位mycmp=5000;//将比较点初值设为5000}interruptvoidMY_ADC_isr(void)//ADC中断服务函数{MY_ADC=ADC_readResult(myAdc,ADC_ResultNumber_0);//获取ADC转换的数字量MY_ADC=ADC_getTemperatureC(myAdc,MY_ADC);//将数字量转换为温度值ADC_clearIntFlag(myAdc,ADC_IntNumber_1);//清除中断标志位PIE_clearInt(myPie,PIE_GroupNumber_10);}interruptvoidKEY_xint1_isr(void)//按键中断服务函数{SET_TEMP++;if(SET_TEMP>40){SET_TEMP=10;}PIE_clearInt(myPie,PIE_GroupNumber_1);}interruptvoidMY_CAP_isr(void)//CAP中断服务函数{uint32_tCapEvent1Count=0,CapEvent2Count=0,CapEvent3Count=0;floatfPwmDuty=0.0;CapEvent1Count=CAP_getCap1(myCap);CapEvent2Count=CAP_getCap2(myCap);CapEvent3Count=CAP_getCap3(myCap);fPwmDuty=(float)(CapEvent2Count-CapEvent1Count)/(CapEvent3Count-CapEvent1Count);//计算PWM占空比fPwmDuty=fPwmDuty*100;NOW_PWM=(int)fPwmDuty;CAP_clearInt(myCap,CAP_Int_Type_CEVT3);CAP_clearInt(myCap,CAP_Int_Type_Global);//Acknowledgethisinterrupttoreceivemoreinterruptsfromgroup4PIE_clearInt(myPie,PIE_GroupNumber_4);}//redefinedinIsr.h//endoffile①/*F2802x_Device.h*/#include"F2802x_Component/include/adc.h"#include"F2802x_Component/include/clk.h"#include"F2802x_Component/include/flash.h"#include"F2802x_Component/include/gpio.h"#include"F2802x_Component/include/pie.h"#include"F2802x_Component/include/pll.h"#include"F2802x_Component/include/timer.h"#include"F2802x_Component/include/wdog.h"#include"F2802x_Component/include/sci.h"#include"F2802x_Component/include/cap.h"①/*Key.c*///theincludes#include"User_Component/Key/Key.h"//**************************************************************************//thedefines//**************************************************************************//theglobals//**************************************************************************//thefunctions//thefunctionprototypes//!\briefKEYinitail//!\param[in]None//!\param[out]NonevoidKEY_initial(void){}////!\briefKEYconfigure//!\param[in]None//!\param[out]NonevoidKEY_config(void){//按键为GPIO12设置为输入口//1.modeGPIO_setMode(KEY_obj,KEY1,GPIO_12_Mode_GeneralPurpose);//2.directionGPIO_setDirection(KEY_obj,KEY1,GPIO_Direction_Input);//3.pullupGPIO_setPullUp(KEY_obj,KEY1,GPIO_PullUp_Disable);//4.qualificationGPIO_setQualification(KEY_obj,KEY1,GPIO_Qual_Sync);}//!\briefScanKeyAPI//!\param[in]key//!\param[out]thestateofKEYuint16_tScanKey(constGPIO_Number_ekey){returnGPIO_getData(KEY_obj,key);}//!\param[in]None//!\param[out]NonevoidKEY_INT_config(void){//(3).registerPIRvectorPIE_registerPieIntHandler(myPie,PIE_GroupNumber_1,PIE_SubGroupNumber_4,(intVec_t)&KEY_xint1_isr);//(4).moduleinterruptconfigurePIE_setExtIntPolarity(myPie,CPU_ExtIntNumber_1,PIE_ExtIntPolarity_FallingEdge);GPIO_setExtInt(myGpio,GPIO_Number_12,CPU_ExtIntNumber_1);//(5).enablemoduleIEPIE_enableExtInt(myPie,CPU_ExtIntNumber_1);//(6).enablePIEIERx.yPIE_enableInt(myPie,PIE_GroupNumber_1,PIE_InterruptSource_XINT_1);//(7)enableCPUIERxCPU_enableInt(myCpu,CPU_IntNumber_1);}////!\briefInterruptServiceRoutine//!\param[in]None//!\param[out]NoneTARGET_EXTinterruptvoidKEY_xint1_isr(void);//redefinedinIsr.h//endoffile/*Key.h*/#ifndef_KEY_H_#define_KEY_H_//theincludes#include//driver#include"F2802x_Component/F2802x_Device.h"#include"User_Component/User_Mcu/User_System.h"#ifdef__cplusplusextern"C"{#endif#ifndefTARGET_GLOBAL#defineTARGET_EXTextern#else#defineTARGET_EXT#endif/*-------hardwaredescriptionoftheexamplemodule-------------*///Forexample//ThemodulederivedfromGPIO#defineKEY_objmyGpio//heremyGpioisdefinedinSystem.h#defineKEY1GPIO_Number_12//pinTARGET_EXTvoidKEY_initial(void);TARGET_EXTvoidKEY_config(void);TARGET_EXTvoidKEY_INT_config(void);TARGET_EXTinterruptvoidKEY_xint1_isr(void);//redefinedinIsr.h/*-------endofhardwaredescription-------------*/TARGET_EXTuint16_tScanKey(constGPIO_Number_ekey);/*-------endofAPIdescription-------------*/#defineKEYPressed1/*-------endofdefines-------------*/#ifdef__cplusplus}#endif//extern"C"#endif//endof_EXAMPLE_H_definition②/*LED_PWM.c*///theincludes#include"User_Component/LED_PWM/LED_PWM.h"//thefunctionsvoidLED_PWM_initial(void){mycmp=0;}voidLED_PWM_config(void){//GPIO的配置GPIO_setMode(myGpio,GPIO_Number_0,GPIO_0_Mode_EPWM1A);GPIO_setPullUp(myGpio,GPIO_Number_0,GPIO_PullUp_Disable);//PWM的配置CLK_disableTbClockSync(myClk);//PWM模块使能CLK_enablePwmClock(myClk,PWM_Number_1);//设置PWM的时钟//PWM_setClkDiv(myPwm1,PWM_ClkDiv_by_1);PWM_setHighSpeedClkDiv(myPwm1,PWM_HspClkDiv_by_6);//计数器的设置PWM_setCounterMode(myPwm1,PWM_CounterMode_Up);//PWM周期设置PWM_setPeriod(myPwm1,10000);//设置周期加载模式PWM_setPeriodLoad(myPwm1,PWM_PeriodLoad_Shadow);//比较点的设置PWM_setCmpA(myPwm1,5000);//PWM装载模式PWM_setLoadMode_CmpA(myPwm1,PWM_LoadMode_Period);//动作PWM_setActionQual_CntUp_CmpA_PwmA(myPwm1,PWM_ActionQual_Set);PWM_setActionQual_Period_PwmA(myPwm1,PWM_ActionQual_Clear);//时钟同步CLK_enableTbClockSync(myClk);}voidLED_PWM_INT_config(void){PIE_registerPieIntHandler(myPie,PIE_GroupNumber_3,PIE_SubGroupNumber_1,(intVec_t)&(LED_PWM_isr));//模块中断配置PWM_setIntMode(myPwm1,PWM_IntMode_CounterEqualPeriod);PWM_setIntPeriod(myPwm1,PWM_IntPeriod_FirstEvent);//PWM中断使能PWM_enableInt(myPwm1);//PIE开关的允许PIE_enableInt(myPie,PIE_GroupNumber_3,PIE_InterruptSource_EPWM1);//CPU全局中断CPU_enableInt(myCpu,CPU_IntNumber_3);}//endoffile/LED_PWM.h*/#ifndef_LED_PWM_H_#define_LED_PWM_H_//theincludes#include//driver#include"F2802x_Component/F2802x_Device.h"#include"User_Component/User_Mcu/User_System.h"#ifdef__cplusplusextern"C"{#endif#ifndefTARGET_GLOBAL#defineTARGET_EXTextern#else#defineTARGET_EXT#endif/*-------hardwaredescriptionoftheexamplemodule-------------*/TARGET_EXTvoidLED_PWM_initial(void);TARGET_EXTvoidLED_PWM_config(void);TARGET_EXTvoidLED_PWM_INT_config(void);TARGET_EXTinterruptvoidLED_PWM_isr(void);//redefinedinIsr.h/*-------endofhardwaredescription-------------*/TARGET_EXTuint16_tmycmp;#ifdef__cplusplus}#endif//extern"C"#endif//endof_EXAMPLE_H_definition③/*MY_ADC.c*///theincludes#include"User_Component/MY_ADC/MY_ADC.h"//thefunctionsvoidMY_ADC_initial(void){SET_TEMP=30;//初始设定温度为30摄氏度}voidMY_ADC_config(void){//ADC时钟使能CLK_enableAdcClock(myClk);//初始化ADC模块ADC_setVoltRefSrc(myAdc,ADC_VoltageRefSrc_Int);ADC_powerUp(myAdc);ADC_enableBandGap(myAdc);ADC_enableRefBuffers(myAdc);ADC_enable(myAdc);//温度转换使能ADC_enableTempSensor(myAdc);//soc配置ADC_setSocChanNumber(myAdc,ADC_SocNumber_0,ADC_SocChanNumber_A5);ADC_setSocSampleWindow(myAdc,ADC_SocNumber_0,ADC_SocSampleWindow_7_cycles);ADC_setSocTrigSrc(myAdc,ADC_SocNumber_0,ADC_SocTrigSrc_EPWM1_ADCSOCA);//PWM配置PWM_setSocAPulseSrc(myPwm1,PWM_SocPulseSrc_CounterEqualZero);PWM_setSocAPeriod(myPwm1,PWM_SocPeriod_FirstEvent);PWM_enableSocAPulse(myPwm1);}voidMY_ADC_INT_config(void){PIE_registerPieIntHandler(myPie,PIE_GroupNumber_10,PIE_SubGroupNumber_1,(intVec_t)&(
mycmp-=100*(SET_TEMP-MY_ADC);//PWM占空比增大
else
mycmp+=100*(MY_ADC-SET_TEMP);//环境检测温度大于设定温度
//PWM占空比减小
PWM_setCmpA(myPwm1,mycmp);//设定CmpA值
PWM_clearIntFlag(myPwm1);//清零PWM中断标志位
PIE_clearInt(myPie,PIE_GroupNumber_3);//清零PIE中断标志位
mycmp=5000;//将比较点初值设为5000
interruptvoidMY_ADC_isr(void)//ADC中断服务函数
{MY_ADC=ADC_readResult(myAdc,ADC_ResultNumber_0);
//获取ADC转换的数字量
MY_ADC=ADC_getTemperatureC(myAdc,MY_ADC);
//将数字量转换为温度值
ADC_clearIntFlag(myAdc,ADC_IntNumber_1);
//清除中断标志位
PIE_clearInt(myPie,PIE_GroupNumber_10);
interruptvoidKEY_xint1_isr(void)//按键中断服务函数
SET_TEMP++;
if(SET_TEMP>40)
SET_TEMP=10;
PIE_clearInt(myPie,PIE_GroupNumber_1);
interruptvoidMY_CAP_isr(void)//CAP中断服务函数
uint32_tCapEvent1Count=0,CapEvent2Count=0,CapEvent3Count=0;
floatfPwmDuty=0.0;
CapEvent1Count=CAP_getCap1(myCap);
CapEvent2Count=CAP_getCap2(myCap);
CapEvent3Count=CAP_getCap3(myCap);
fPwmDuty=(float)(CapEvent2Count-CapEvent1Count)/(CapEvent3Count-CapEvent1Count);//计算PWM占空比
fPwmDuty=fPwmDuty*100;
NOW_PWM=(int)fPwmDuty;
CAP_clearInt(myCap,CAP_Int_Type_CEVT3);
CAP_clearInt(myCap,CAP_Int_Type_Global);
//Acknowledgethisinterrupttoreceivemoreinterruptsfromgroup4
PIE_clearInt(myPie,PIE_GroupNumber_4);
//redefinedinIsr.h
①/*F2802x_Device.h*/
#include"F2802x_Component/include/adc.h"
#include"F2802x_Component/include/clk.h"
#include"F2802x_Component/include/flash.h"
#include"F2802x_Component/include/gpio.h"
#include"F2802x_Component/include/pie.h"
#include"F2802x_Component/include/pll.h"
#include"F2802x_Component/include/timer.h"
#include"F2802x_Component/include/wdog.h"
#include"F2802x_Component/include/sci.h"
#include"F2802x_Component/include/cap.h"
①/*Key.c*/
#include"User_Component/Key/Key.h"
//thefunctionprototypes
//!
\briefKEYinitail
\param[in]None
\param[out]None
voidKEY_initial(void)
//
\briefKEYconfigure
voidKEY_config(void)
{//按键为GPIO12设置为输入口
//1.mode
GPIO_setMode(KEY_obj,KEY1,GPIO_12_Mode_GeneralPurpose);
//2.direction
GPIO_setDirection(KEY_obj,KEY1,GPIO_Direction_Input);
//3.pullup
GPIO_setPullUp(KEY_obj,KEY1,GPIO_PullUp_Disable);
//4.qualification
GPIO_setQualification(KEY_obj,KEY1,GPIO_Qual_Sync);
\briefScanKeyAPI
\param[in]key
\param[out]thestateofKEY
uint16_tScanKey(constGPIO_Number_ekey)
returnGPIO_getData(KEY_obj,key);
voidKEY_INT_config(void)
{//(3).registerPIRvector
PIE_registerPieIntHandler(myPie,PIE_GroupNumber_1,PIE_SubGroupNumber_4,(intVec_t)&KEY_xint1_isr);
//(4).moduleinterruptconfigure
PIE_setExtIntPolarity(myPie,CPU_ExtIntNumber_1,PIE_ExtIntPolarity_FallingEdge);
GPIO_setExtInt(myGpio,GPIO_Number_12,CPU_ExtIntNumber_1);
//(5).enablemoduleIE
PIE_enableExtInt(myPie,CPU_ExtIntNumber_1);
//(6).enablePIEIERx.y
PIE_enableInt(myPie,PIE_GroupNumber_1,PIE_InterruptSource_XINT_1);
//(7)enableCPUIERx
CPU_enableInt(myCpu,CPU_IntNumber_1);
\briefInterruptServiceRoutine
TARGET_EXTinterruptvoidKEY_xint1_isr(void);//redefinedinIsr.h
/*Key.h*/
#ifndef_KEY_H_
#define_KEY_H_
#include
//driver
#include"F2802x_Component/F2802x_Device.h"
#include"User_Component/User_Mcu/User_System.h"
#ifdef__cplusplus
extern"C"{
#endif
#ifndefTARGET_GLOBAL
#defineTARGET_EXTextern
#else
#defineTARGET_EXT
/*-------hardwaredescriptionoftheexamplemodule-------------*/
//Forexample
//ThemodulederivedfromGPIO
#defineKEY_objmyGpio//heremyGpioisdefinedinSystem.h
#defineKEY1GPIO_Number_12//pin
TARGET_EXTvoidKEY_initial(void);
TARGET_EXTvoidKEY_config(void);
TARGET_EXTvoidKEY_INT_config(void);
/*-------endofhardwaredescription-------------*/
TARGET_EXTuint16_tScanKey(constGPIO_Number_ekey);
/*-------endofAPIdescription-------------*/
#defineKEYPressed1
/*-------endofdefines-------------*/
#endif//extern"C"
#endif//endof_EXAMPLE_H_definition
②/*LED_PWM.c*/
#include"User_Component/LED_PWM/LED_PWM.h"
voidLED_PWM_initial(void)
mycmp=0;
voidLED_PWM_config(void)
//GPIO的配置
GPIO_setMode(myGpio,GPIO_Number_0,GPIO_0_Mode_EPWM1A);
GPIO_setPullUp(myGpio,GPIO_Number_0,GPIO_PullUp_Disable);
//PWM的配置
CLK_disableTbClockSync(myClk);
//PWM模块使能
CLK_enablePwmClock(myClk,PWM_Number_1);
//设置PWM的时钟
//PWM_setClkDiv(myPwm1,PWM_ClkDiv_by_1);
PWM_setHighSpeedClkDiv(myPwm1,PWM_HspClkDiv_by_6);
//计数器的设置
PWM_setCounterMode(myPwm1,PWM_CounterMode_Up);
//PWM周期设置
PWM_setPeriod(myPwm1,10000);
//设置周期加载模式
PWM_setPeriodLoad(myPwm1,PWM_PeriodLoad_Shadow);
//比较点的设置
PWM_setCmpA(myPwm1,5000);
//PWM装载模式
PWM_setLoadMode_CmpA(myPwm1,PWM_LoadMode_Period);
//动作
PWM_setActionQual_CntUp_CmpA_PwmA(myPwm1,PWM_ActionQual_Set);
PWM_setActionQual_Period_PwmA(myPwm1,PWM_ActionQual_Clear);
//时钟同步
CLK_enableTbClockSync(myClk);
voidLED_PWM_INT_config(void)
PIE_registerPieIntHandler(myPie,PIE_GroupNumber_3,PIE_SubGroupNumber_1,(intVec_t)&(LED_PWM_isr));
//模块中断配置
PWM_setIntMode(myPwm1,PWM_IntMode_CounterEqualPeriod);
PWM_setIntPeriod(myPwm1,PWM_IntPeriod_FirstEvent);
//PWM中断使能
PWM_enableInt(myPwm1);
//PIE开关的允许
PIE_enableInt(myPie,PIE_GroupNumber_3,PIE_InterruptSource_EPWM1);
//CPU全局中断
CPU_enableInt(myCpu,CPU_IntNumber_3);
/LED_PWM.h*/
#ifndef_LED_PWM_H_
#define_LED_PWM_H_
TARGET_EXTvoidLED_PWM_initial(void);
TARGET_EXTvoidLED_PWM_config(void);
TARGET_EXTvoidLED_PWM_INT_config(void);
TARGET_EXTinterruptvoidLED_PWM_isr(void);//redefinedinIsr.h
TARGET_EXTuint16_tmycmp;
③/*MY_ADC.c*/
#include"User_Component/MY_ADC/MY_ADC.h"
voidMY_ADC_initial(void)
SET_TEMP=30;//初始设定温度为30摄氏度
voidMY_ADC_config(void)
{//ADC时钟使能
CLK_enableAdcClock(myClk);
//初始化ADC模块
ADC_setVoltRefSrc(myAdc,ADC_VoltageRefSrc_Int);
ADC_powerUp(myAdc);
ADC_enableBandGap(myAdc);
ADC_enableRefBuffers(myAdc);
ADC_enable(myAdc);
//温度转换使能
ADC_enableTempSensor(myAdc);
//soc配置
ADC_setSocChanNumber(myAdc,ADC_SocNumber_0,ADC_SocChanNumber_A5);
ADC_setSocSampleWindow(myAdc,ADC_SocNumber_0,ADC_SocSampleWindow_7_cycles);
ADC_setSocTrigSrc(myAdc,ADC_SocNumber_0,ADC_SocTrigSrc_EPWM1_ADCSOCA);
//PWM配置
PWM_setSocAPulseSrc(myPwm1,PWM_SocPulseSrc_CounterEqualZero);
PWM_setSocAPeriod(myPwm1,PWM_SocPeriod_FirstEvent);
PWM_enableSocAPulse(myPwm1);
voidMY_ADC_INT_config(void)
PIE_registerPieIntHandler(myPie,PIE_GroupNumber_10,PIE_SubGroupNumber_1,(intVec_t)&(
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