嵌入式系統(tǒng)設(shè)計課設(shè)報告

1、福州高校嵌入式系統(tǒng)設(shè)計課設(shè)報告書題 目： 基于28027的虛擬系統(tǒng) 姓 名： 學(xué) 號： 學(xué) 院： 電氣工程與自動化學(xué)院 專 業(yè)： 電氣工程與自動化 年 級： 起訖日期： 指導(dǎo)老師： 目 錄1、課程設(shè)計目的12、課程設(shè)計題目和實現(xiàn)目標13、設(shè)計方案14、程序流程圖15、程序代碼16、調(diào)試總結(jié)17、設(shè)計心得體會18、參考文獻11、課程設(shè)計目的嵌入式系統(tǒng)設(shè)計課設(shè)是與嵌入式系統(tǒng)設(shè)計課程相配套的實踐教學(xué)環(huán)節(jié)。嵌入式系統(tǒng)設(shè)計是一門實踐性很強的專業(yè)基礎(chǔ)課，通過課程設(shè)計，達到進一步理解嵌入式芯片的硬件、軟件和綜合應(yīng)用方面的學(xué)問，培育實踐力量和綜合應(yīng)用力量，開拓學(xué)習樂觀性、主動性，學(xué)會機敏運用已經(jīng)學(xué)過的學(xué)問，并

2、能不斷接受新的學(xué)問。培育大膽創(chuàng)造制造的設(shè)計理念，為今后就業(yè)打下良好的基礎(chǔ)。通過課程設(shè)計，把握以下學(xué)問和技能：1 嵌入式應(yīng)用系統(tǒng)的總體方案的設(shè)計；2 嵌入式應(yīng)用系統(tǒng)的硬件設(shè)計；3 嵌入式應(yīng)用系統(tǒng)的軟件程序設(shè)計；4 嵌入式開發(fā)系統(tǒng)的應(yīng)用和調(diào)試力量 2、 課程設(shè)計題目和實現(xiàn)目標 課程設(shè)計題目：基于28027的虛擬系統(tǒng)任務(wù)要求：A、 利用28027的片上溫度傳感器，檢測當前溫度；B、 通過PWM過零中斷作為溫度檢測A/D的觸發(fā)，在PWM中斷時完成溫度采樣和下一周期PWM占空比的修正；PWM頻率為1K;C、 利用按鍵作為溫度給定；溫度給定變化從10度到40度。D、 當檢測溫度超過給定時，PWM占空比增減

3、?。p小幅度自己設(shè)定）；當檢測溫度小于給定時，PWM占空比增大（增大幅度自己設(shè)定）；E、 把PWM輸出接到捕獲口，利用捕獲口測量當前PWM的占空比；F、 把E測量的PWM占空比通過串口通信發(fā)送給上位機；3、 設(shè)計方案-介紹系統(tǒng)實現(xiàn)方案和系統(tǒng)原理圖系統(tǒng)實現(xiàn)方案：任務(wù)A:利用ADC模塊通道A5獵取當前環(huán)境溫度。任務(wù)B:PWM過零觸發(fā)ADC模塊，在PWM中斷服務(wù)函數(shù)中，將當前環(huán)境溫度和按鍵設(shè)定溫度進行比較，并依據(jù)任務(wù)D的要求修訂PWM占空比。PWM頻率為1K HZ:依據(jù)關(guān)系式：TBCLK=SYSCLKOUT/（HSPCLKDIV*CLKDIV)取SYSCLKOUT=60M HZ,HSPCLKDIV=

4、6，CLKDIV=1，求得TBCLK=10M HZ。將period設(shè)為10K，便得到1K HZ 的PWM波。任務(wù)C:用KEY模塊的中斷實現(xiàn)溫度給定。任務(wù)D：在PWM的周期結(jié)束產(chǎn)生的中斷中，通過轉(zhuǎn)變比較點CMPA的位置來轉(zhuǎn)變PWM占空比的大小。任務(wù)E：利用CAP模塊設(shè)置3個捕獲點捕獲PWM的上升沿和下降沿，計算得到PWM波的占空比。任務(wù)F：利用SCI模塊實現(xiàn)串口通信將溫度和占空比上傳到上位機。此外，各模塊的配置都與GPIO模塊有關(guān)。系統(tǒng)原理圖：28027 C2000 Piccolo Launchpad原理圖4、 程序流程-各個模塊的流程圖5、 程序代碼/*app.c*/ the includes

5、#include "Application/app.h"/ */ the defines/ */ the globals/ */ the functions void delay(uint32_t time) while(time-); /延時函數(shù)/ end of file/*isr.c*/ the includes#include "Application/isr.h"/ */ the defines/ */ the globals/ */ the functionsinterrupt void LED_PWM_isr(void) /PWM的中斷服務(wù)函

6、數(shù)if(MY_ADC<SET_TEMP) /環(huán)境檢測溫度小于設(shè)定溫度時mycmp-=100*(SET_TEMP-MY_ADC); /PWM占空比增大elsemycmp+=100*(MY_ADC-SET_TEMP); /環(huán)境檢測溫度大于設(shè)定溫度 / PWM占空比減小 PWM_setCmpA(myPwm1,mycmp); /設(shè)定CmpA值 PWM_clearIntFlag(myPwm1); /清零PWM中斷標志位 PIE_clearInt(myPie,PIE_GroupNumber_3); /清零PIE中斷標志位 mycmp=5000; /將比較點初值設(shè)為5000interrupt void

7、 MY_ADC_isr(void) /ADC中斷服務(wù)函數(shù) MY_ADC=ADC_readResult(myAdc,ADC_ResultNumber_0); /獵取ADC轉(zhuǎn)換的數(shù)字量 MY_ADC= ADC_getTemperatureC(myAdc, MY_ADC);/將數(shù)字量轉(zhuǎn)換為溫度值A(chǔ)DC_clearIntFlag(myAdc, ADC_IntNumber_1);/清除中斷標志位PIE_clearInt(myPie,PIE_GroupNumber_10);interrupt void KEY_xint1_isr(void) /按鍵中斷服務(wù)函數(shù)SET_TEMP+;if(SET_TEMP&g

8、t;40)SET_TEMP=10;PIE_clearInt(myPie,PIE_GroupNumber_1);interrupt void MY_CAP_isr(void) /CAP中斷服務(wù)函數(shù)uint32_t CapEvent1Count=0,CapEvent2Count=0,CapEvent3Count=0;float fPwmDuty=0.0; CapEvent1Count = CAP_getCap1(myCap); CapEvent2Count = CAP_getCap2(myCap); CapEvent3Count = CAP_getCap3(myCap); fPwmDuty = (

9、float)(CapEvent2Count - CapEvent1Count) / (CapEvent3Count - CapEvent1Count); /計算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); / Acknowledge this interrupt to receive more interrupts from group 4 PIE_clearInt(my

10、Pie, PIE_GroupNumber_4);/redefined in Isr.h/ end of file/*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 "F2

11、802x_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"/*Key.c*

12、/ the includes#include "User_Component/Key/Key.h"/ */ the defines/ */ the globals/ */ the functions/ the function prototypes/! brief KEY initail/! paramin None/! paramout Nonevoid KEY_initial(void)/! brief KEY configure/! paramin None/! paramout Nonevoid KEY_config(void) /按鍵為GPIO12設(shè)置為輸入口 /

13、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); /! brief ScanKey API/! paramin key/!

14、 paramout the state of KEYuint16_t ScanKey(const GPIO_Number_e key)return GPIO_getData(KEY_obj, key);/! paramin None/! paramout Nonevoid KEY_INT_config(void) /(3). register PIR vectorPIE_registerPieIntHandler(myPie, PIE_GroupNumber_1, PIE_SubGroupNumber_4, (intVec_t) &KEY_xint1_isr);/(4). module

15、 interrupt configurePIE_setExtIntPolarity(myPie，CPU_ExtIntNumber_1, PIE_ExtIntPolarity_FallingEdge);GPIO_setExtInt(myGpio, GPIO_Number_12, CPU_ExtIntNumber_1);/(5). enable module IEPIE_enableExtInt(myPie, CPU_ExtIntNumber_1);/(6). enable PIEIERx.yPIE_enableInt(myPie, PIE_GroupNumber_1, PIE_Interrupt

16、Source_XINT_1);/(7) enable CPU IERxCPU_enableInt(myCpu, CPU_IntNumber_1);/! brief Interrupt Service Routine/! paramin None/! paramout NoneTARGET_EXT interrupt void KEY_xint1_isr(void); /redefined in Isr.h/ end of file/*Key.h*/#ifndef _KEY_H_#define _KEY_H_/ the includes#include <stdint.h>/ dri

17、ver#include "F2802x_Component/F2802x_Device.h"#include "User_Component/User_Mcu/User_System.h"#ifdef _cplusplusextern "C" #endif#ifndef TARGET_GLOBAL #define TARGET_EXT extern#else #define TARGET_EXT#endif/*- hardware description of the example module -*/ For example/ T

18、he module derived from GPIO#define KEY_obj myGpio /here myGpio is defined in System.h#define KEY1 GPIO_Number_12 /pinTARGET_EXT void KEY_initial(void);TARGET_EXT void KEY_config(void);TARGET_EXT void KEY_INT_config(void);TARGET_EXT interrupt void KEY_xint1_isr(void); /redefined in Isr.h/*-end of har

19、dware description -*/TARGET_EXT uint16_t ScanKey(const GPIO_Number_e key);/*-end of API description -*/#define KEYPressed 1/*- end of defines -*/#ifdef _cplusplus#endif / extern "C"#endif / end of _EXAMPLE_H_ definition/*LED_PWM.c*/ the includes#include "User_Component/LED_PWM/LED_PWM

20、.h"/ the functions void LED_PWM_initial(void) mycmp=0; void LED_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模塊使能 CLK_enablePwmClock(myClk,PWM_Number_1); /設(shè)置P

21、WM的時鐘 /PWM_setClkDiv(myPwm1,PWM_ClkDiv_by_1); PWM_setHighSpeedClkDiv(myPwm1, PWM_HspClkDiv_by_6); /計數(shù)器的設(shè)置 PWM_setCounterMode(myPwm1,PWM_CounterMode_Up); /PWM周期設(shè)置 PWM_setPeriod(myPwm1,10000); /設(shè)置周期加載模式 PWM_setPeriodLoad(myPwm1,PWM_PeriodLoad_Shadow); /比較點的設(shè)置 PWM_setCmpA(myPwm1,5000); /PWM裝載模式 PWM_set

22、LoadMode_CmpA(myPwm1,PWM_LoadMode_Period); /動作 PWM_setActionQual_CntUp_CmpA_PwmA(myPwm1,PWM_ActionQual_Set); PWM_setActionQual_Period_PwmA(myPwm1,PWM_ActionQual_Clear); /時鐘同步 CLK_enableTbClockSync(myClk); void LED_PWM_INT_config(void) PIE_registerPieIntHandler(myPie,PIE_GroupNumber_3,PIE_SubGroupNum

23、ber_1,(intVec_t)&(LED_PWM_isr); /模塊中斷配置 PWM_setIntMode(myPwm1,PWM_IntMode_CounterEqualPeriod); PWM_setIntPeriod(myPwm1,PWM_IntPeriod_FirstEvent); /PWM中斷使能 PWM_enableInt(myPwm1); /PIE開關(guān)的允許 PIE_enableInt(myPie, PIE_GroupNumber_3, PIE_InterruptSource_EPWM1); /CPU全局中斷 CPU_enableInt(myCpu,CPU_IntNumb

24、er_3); / end of file/LED_PWM.h*/#ifndef _LED_PWM_H_#define _LED_PWM_H_/ the includes#include <stdint.h>/ driver#include "F2802x_Component/F2802x_Device.h"#include "User_Component/User_Mcu/User_System.h"#ifdef _cplusplusextern "C" #endif#ifndef TARGET_GLOBAL #defin

25、e TARGET_EXT extern#else #define TARGET_EXT#endif/*- hardware description of the example module -*/TARGET_EXT void LED_PWM_initial(void);TARGET_EXT void LED_PWM_config(void);TARGET_EXT void LED_PWM_INT_config(void);TARGET_EXT interrupt void LED_PWM_isr(void); /redefined in Isr.h/*-end of hardware de

26、scription -*/TARGET_EXT uint16_t mycmp;#ifdef _cplusplus#endif / extern "C"#endif / end of _EXAMPLE_H_ definition/*MY_ADC.c*/ the includes#include "User_Component/MY_ADC/MY_ADC.h"/ the functionsvoid MY_ADC_initial(void)SET_TEMP=30; /初始設(shè)定溫度為30攝氏度void MY_ADC_config(void) /ADC時鐘使能 C

27、LK_enableAdcClock(myClk);/初始化ADC模塊 ADC_setVoltRefSrc(myAdc, ADC_VoltageRefSrc_Int); ADC_powerUp(myAdc); ADC_enableBandGap(myAdc); ADC_enableRefBuffers(myAdc); ADC_enable(myAdc); /溫度轉(zhuǎn)換使能 ADC_enableTempSensor(myAdc); /soc配置 ADC_setSocChanNumber(myAdc, ADC_SocNumber_0, ADC_SocChanNumber_A5); ADC_setSoc

28、SampleWindow(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);void MY_AD

29、C_INT_config(void)PIE_registerPieIntHandler(myPie,PIE_GroupNumber_10,PIE_SubGroupNumber_1,(intVec_t)&(MY_ADC_isr); /模塊中斷配置 ADC_setIntPulseGenMode(myAdc, ADC_IntPulseGenMode_Prior); ADC_setIntSrc(myAdc,ADC_IntNumber_1, ADC_IntSrc_EOC0); ADC_setIntMode(myAdc, ADC_IntNumber_1, ADC_IntMode_ClearFlag

30、); /ADC中斷使能 ADC_enableInt(myAdc,ADC_IntNumber_1); /PIE開關(guān)的允許 PIE_enableInt(myPie, PIE_GroupNumber_10, PIE_InterruptSource_ADCINT_10_1); /CPU全局中斷 CPU_enableInt(myCpu,CPU_IntNumber_10); / end of file/*MY_ADC.h*/#ifndef _MY_ADC_H_#define _MY_ADC_H_/ the includes#include <stdint.h>/ driver#include

31、"F2802x_Component/F2802x_Device.h"#include "User_Component/User_Mcu/User_System.h"#ifdef _cplusplusextern "C" #endif#ifndef TARGET_GLOBAL #define TARGET_EXT extern#else #define TARGET_EXT#endif/*- hardware description of the example module -*/TARGET_EXT void MY_ADC_init

32、ial(void);TARGET_EXT void MY_ADC_config(void);TARGET_EXT void MY_ADC_INT_config(void);TARGET_EXT interrupt void MY_ADC_isr(void); /redefined in Isr.h/*-end of hardware description -*/TARGET_EXT uint16_t MY_ADC;TARGET_EXT uint16_t SET_TEMP;/*- end of globals -*/#ifdef _cplusplus#endif / extern "

33、C"#endif / end of _EXAMPLE_H_ definition/*MY_CAP.c*/ the includes#include "User_Component/MY_CAP/MY_CAP.h"#include "User_Component/User_Mcu/User_System.h" void MY_CAP_initial(void)void MY_CAP_config(void)GPIO_setPullUp(myGpio, GPIO_Number_5, GPIO_PullUp_Enable);GPIO_setQuali

34、fication(myGpio, GPIO_Number_5, GPIO_Qual_Sync); GPIO_setMode(myGpio, GPIO_Number_5, GPIO_5_Mode_ECAP1); CLK_enableEcap1Clock(myClk); CAP_disableInt(myCap, CAP_Int_Type_All); / 禁止CAP中斷 CAP_clearInt(myCap, CAP_Int_Type_All); / 清除CAP中斷標志位 CAP_disableCaptureLoad(myCap); / Disable CAP1-CAP4 register loa

35、ds CAP_disableTimestampCounter(myCap); / Make sure the counter is stopped / Configure peripheral registers CAP_setCapContinuous(myCap); / continuous CAP_setStopWrap(myCap, CAP_Stop_Wrap_CEVT4);/ Stop at 3 events CAP_setCapEvtPolarity(myCap, CAP_Event_1, CAP_Polarity_Rising); / 捕獲上升沿 CAP_setCapEvtPol

36、arity(myCap, CAP_Event_2, CAP_Polarity_Falling); / 捕獲下降沿 CAP_setCapEvtPolarity(myCap, CAP_Event_3, CAP_Polarity_Rising); / 捕獲上升沿 CAP_setCapEvtReset(myCap, CAP_Event_3, CAP_Reset_Enable); / 重置計數(shù)器確保計數(shù)器不會溢出 CAP_enableTimestampCounter(myCap); / 打開計數(shù)器 CAP_enableCaptureLoad(myCap); / Enable CAP1-CAP4 regi

37、ster loads /* CAP_enableInt(myCap, CAP_Int_Type_CEVT3); / 3個捕獲點之后發(fā)生中斷 / Register interrupt handlers in the PIE vector table PIE_registerPieIntHandler(myPie, PIE_GroupNumber_4, PIE_SubGroupNumber_1, (intVec_t)&ecap1_isr); / Enable CPU INT4 which is connected to ECAP1-4 INT:CPU_enableInt(myCpu, CP

38、U_IntNumber_4); / Enable eCAP INTn in the PIE: Group 3 interrupt 1-6 PIE_enableCaptureInt(myPie); CPU_enableGlobalInts(myCpu); */void MY_CAP_INT_config(void) CAP_enableInt(myCap, CAP_Int_Type_CEVT3); / 3 events = interrupt / Register interrupt handlers in the PIE vector table PIE_registerPieIntHandl

39、er(myPie, PIE_GroupNumber_4, PIE_SubGroupNumber_1, (intVec_t)&MY_CAP_isr); / Enable CPU INT4 which is connected to ECAP1-4 INT:CPU_enableInt(myCpu, CPU_IntNumber_4); / Enable eCAP INTn in the PIE: Group 3 interrupt 1-6 PIE_enableCaptureInt(myPie); CPU_enableGlobalInts(myCpu);/ end of file/*MY_CA

40、P.h*/#ifndef _MY_CAP_H_#define _MY_CAP_H_/ the includes#include <stdint.h>/ driver#include "F2802x_Component/F2802x_Device.h"#ifdef _cplusplusextern "C" #endif#ifndef TARGET_GLOBAL #define TARGET_EXT extern#else #define TARGET_EXT#endif/*- hardware description of the exampl

41、e module -*/TARGET_EXT void MY_CAP_initial(void);TARGET_EXT void MY_CAP_config(void);TARGET_EXT void MY_CAP_INT_config(void);TARGET_EXT interrupt void MY_CAP_isr(void); /redefined in Isr.h/*-end of hardware description -*/TARGET_EXT int NOW_PWM;#ifdef _cplusplus#endif / extern "C"#endif /

42、end of _EXAMPLE_H_ definition/*mySci.c*/ the includes#include "User_Component/mySci/mySci.h"/ the functions / the function prototypes/! brief SCI initail/! paramin None/! paramout Nonevoid SCI_initial(void)/! brief SCI configure/! paramin None/! paramout Nonevoid SCI_config(void) /1. GPIO

43、configure/1.1 pullupGPIO_setPullUp(myGpio, GPIO_Number_28, GPIO_PullUp_Enable); GPIO_setPullUp(myGpio, GPIO_Number_29, GPIO_PullUp_Disable); /1.2 input qualification GPIO_setQualification(myGpio, GPIO_Number_28, GPIO_Qual_ASync); /1.3 modeGPIO_setMode(myGpio, GPIO_Number_28, GPIO_28_Mode_SCIRXDA);/S

44、CI數(shù)據(jù)發(fā)送引腳GPIO_setMode(myGpio, GPIO_Number_29, GPIO_29_Mode_SCITXDA);/SCI數(shù)據(jù)接收引腳 /2. enable SCIA clk CLK_enableSciaClock(myClk); /3. configure the low speed peripheral clock(LSPCLK) LSPCLK = SYSCLKOUT/4 =15MHzCLK_setLowSpdPreScaler(myClk, CLK_LowSpdPreScaler_SysClkOut_by_4);/設(shè)置時鐘分頻 /4. SCI BRR = LSPCLK

45、/(SCI BAUDx8) - 1SCI_setBaudRate(mySci, SCI_BaudRate_9_6_kBaud);/設(shè)置波特率為9600 /5. configure package(1 stop bit, No loopback, No parity,8 char bits, async mode, idle-line protocol) SCI_disableParity(mySci); SCI_setNumStopBits(mySci, SCI_NumStopBits_One); SCI_setCharLength(mySci, SCI_CharLength_8_Bits);

46、 /6. enable SCI TX&RX SCI_enableTx(mySci); SCI_enableRx(mySci); /7.configure the SCI TX&RX FIFO/7.1 enable FIFO/先進先出 SCI_resetChannels(mySci); SCI_enableFifoEnh(mySci); /7.2 configure TX FIFO SCI_resetTxFifo(mySci); /7.3 configure RX FIFO SCI_resetRxFifo(mySci); /8. enable SCI module SCI_ena

47、ble(mySci);/! brief Transmit a string from the SCI/! paramin string/! paramout Nonevoid scia_msg(char * msg) int i; i = 0; while(msgi != '0') scia_xmit(msgi); i+; /! brief Transmit a char from the SCI/! paramin char/! paramout Nonevoid scia_xmit(int a)while(SCI_getTxFifoStatus(mySci) != SCI_

48、FifoStatus_Empty) SCI_putDataBlocking(mySci, a);/! brief Receive a char from the SCI/! paramin None/! paramout a:receive data/! 00: no received /00: receivedint scia_receive(uint16_t *a)if(SCI_getRxFifoStatus(mySci) < SCI_FifoStatus_1_Word)return 0;else *a = SCI_getData(mySci);return 1;/ end of file/*mySci.h*/#ifndef _MYSCI_H_#define _MYSCI_H_/ */ the includes#include <stdint.h>/ driver#