msp430 ti套件lm3slib pwm第1章脈沖寬度調(diào)制

( 函數(shù)voidPWMGenConfigure(nsigedlongulBase,nsigedlonulGen,nsigedlonguC5voidPWMGenPeriodSet(nsigedlongulBase,nsigedlonulGen,nsigedlonguP6nsigedlongPWMGenPeriodGet(nsigedlongulBase,nsiged 7voidPWMPulseWidthSet(nsigedlongulBase,nsigedlonguPWMOut,nsigedlongl7nsigedlongPWMPulseWidthGet(nsigedlongulBase,nsigedlonguP7voidPWMGenEnable(nsigedlongulBase,nsiged 8voidPWMGenDisable(nsigedlongulBase,nsiged 8voidPWMDeadBandEnable(nsiged nsiged nsigndshort nsigndshortuFall8voidPWMDeadBandDisable(nsigedlongulBase,nsiged 9voidPWMSyncUpdate(nsigedlongulBase,nsigedlongule9voidPWMSyncTimeBase(nsigedlongulBase,nsigedlongulenvoidPWMOutputState(nsigedlongulBase,nsigedlongulPWMutBits,BooleanEnvoidPWMOutputInvert(nsigedlongulBase,nsigedlongulPWMutBits,BooleanInvoidPWMOutputFaultLevel(nsiged nsigedlongulPWM BooleanbDrveigh)voidPWMOutputFault(nsiged nsigedlongulPWM BooleanbFaultSppess)voidPWMGenIntRegister(nsigedlongulBase,nsigedlonulGn,void(*pfnIntHandler(vvoidPWMGenIntUnregister(nsigedlongulBase,nsigedlonuvoidPWMGenIntTrigEnable(nsigedlongulBase,nsigedlonulGen,nsigedlongulntvoidPWMGenIntTrigDisable(nsigedlongulBase,nsigedlonulGen,nsigedlongulntnsigedlongPWMGenIntStatus(nsigedlongulBase,nsigedlonulGen,BooleanMavoidPWMGenIntClear(nsigedlongulBase,nsigedlonulGen,nsigedlongulvoidPWMGenFaultConfigure(nsigednsigednsigedlongulMinFaulnsigedlongulFaulSeses)voidPWMGenFaultTriggerSet(nsigednsigedlonnsigedlongnsigedlongulFaultTignsigedlongPWMGenFaultTriggerGet(nsigednsigednsigedlonglGunsignedlongPWMGenFaultStatus(unsignedlongunsignedlongulGen,voidPWMGenFaultClear(unsignedlongunsignedlongunsignedlongulGroup,voidPWMFaultIntRegister(unsignedlongulBase,voidvoidPWMFaultIntUnregister(unsignedlongvoidPWMFaultIntClear(unsignedlongvoidPWMFaultIntClearExt(unsignedlongulBase,unsignedlongvoidPWMIntEnable(unsignedlongulBase,unsignedlongvoidPWMIntDisable(unsignedlongulBase,unsignedlongunsignedlongPWMIntStatus(unsignedlongulBase,tBooleanPWMPWMModulation器來產(chǎn)生方波，并且可以通過調(diào)整方波的占空比來對模擬信號電平進行編碼。PWM通常使StellarisARM4PWMPWM發(fā)生器模1個定時器（16位遞減或先遞增后遞減計數(shù)器、2個比較器、1PWM信號發(fā)生器、1個死區(qū)發(fā)生器，以及一個中斷/ADCPWM信號的極PWMPWMPWM信號可以是獨立的信號（基于同一定時器因而頻率相同的獨立信號除外），也可以是一對插入了死區(qū)延遲的互補StellarisPWMPWM信號，如簡易充電泵需要的信號；也可以產(chǎn)生帶死區(qū)延遲的成對PWM信號，如半-H橋（half-HStellarisARMPWMPWM發(fā)生器運作時，定時器在不斷計數(shù)并和兩個比較器的值進行比較，可以在和比較器16PWM1.11.1PWMD/A1.2PWMPWM定時器有兩種工作模式：遞減計數(shù)模式或先遞增后遞減計數(shù)模式。在遞減計數(shù)模PWM信號，而先遞增后遞減計數(shù)模式是用來產(chǎn)生中心對齊的PWM信號。PWM3PWM信號的過程中使用。一個是方向信平之間切換0時，零脈沖信號發(fā)PWMPWM信號的過程中使用。如果任一比較器的值大于計數(shù)器的裝載值，則該比較器永遠不會左對齊的一對PWM波形。1.3左對齊PWM1.4中心對齊PWMbridge1.5PWM運行（即令PWM輸出無效，以避免其長時間處于危險的運行狀態(tài)。FaultPWM信號輸PWM5種信號：zero、load、dir、cmpA、cmpB都可以觸發(fā)中斷，或者觸發(fā)ADC轉(zhuǎn)換。使控制非常靈活。PWMGenConfigure()PWM發(fā)生器模式進行設置，包括定時器的計數(shù)模()PWMPulseWidthSet(PWMPWMPWMGenPeriodSet()里設置的值，也就是占空比不能大于100%。調(diào)用函數(shù)PWMGenEnablePWMPWM發(fā)送器的定時器開始運作。反之函數(shù)PWMGenDisable()則禁止PWM定時器運作。1.1PWMGenConfigure(voidPWMGenConfigure(unsignedlongulBase,unsignedlongulGen,unsignedlongulBase：PWMulGen：PWM // //發(fā)生器不同步模式PWM_GEN_MODE_GEN_SYNC_LOCAL//發(fā)生器局部同步模式PWM_GEN_MODE_GEN_SYNC_GLOBAL//全局發(fā)生器同步模式 //不同步 //局部同步PWM_GEN_MODE_DB_SYNC_GLOBAL//全局發(fā)生器同步模式 PWM_GEN_MODE_FAULT_UNLATCHED// //PWM_GEN_MODE_FAULT_NO_MINPER// //Fault0 //PWMnFLTSRC0無1.2PWMGenPeriodSetvoidPWMGenPeriodSet(unsignedlongulBase,unsignedlongulGen,unsignedlongulBase：PWM端口的基址，取值PWM_BaseulGen：PWM發(fā)生器的編號，取下列值之一：無1.3PWMGenPeriodGetunsignedlongPWMGenPeriodGet(unsignedlongulBase,unsignedlongulBase：PWM端口的基址，取值PWM_BaseulGen：PWM發(fā)生器的編號，取下列值之一：1.4PWMPulseWidthSet(voidPWMPulseWidthSet(unsignedlongulBase,unsignedlongulPWMOut,unsignedlongulBase：PWM端口的基址，取值PWM_Base PWM的高電平寬度，寬度值是PWM無1.5PWMPulseWidthGet(unsignedlongPWMPulseWidthGet(unsignedlongulBase,unsignedlongulBase：PWM端口的基址，取值PWM_Base PWM的高電平寬度，寬度值是PWM計數(shù)器的計時時鐘數(shù)，類型為unsignedlong1.6PWMGenEnable(voidPWMGenEnable(unsignedlongulBase,unsignedlongulBase：PWM端口的基址，取值PWM_BaseulGen：PWM發(fā)生器的編號，取下列值之一：無1.7PWMGenDisable(voidPWMGenDisable(unsignedlongulBase,unsignedlongulBase：PWM端口的基址，取值PWM_BaseulGen：PWM發(fā)生器的編號，取下列值之一：無PWMDeadBandEnablePWM發(fā)生器的死區(qū)時間，并打開死區(qū)功能，脈沖個數(shù)。調(diào)用該函數(shù)配置好后，PWMPWM就是一對帶死區(qū)的反相的1.8PWMDeadBandEnable(voidPWMDeadBandEnable(unsignedlongunsignedlongulGen,unsignedshortunsignedshortulBase：PWM端口的基址，取值PWM_BaseulGen：PWM發(fā)生器的編號，取下列值之一：無1.9PWMDeadBandDisable(voidPWMDeadBandDisable(unsignedlongulBase,unsignedlongulBase：PWM端口的基址，取值PWM_BaseulGen：PWM發(fā)生器的編號，取下列值之一：無PWMSyncUpdate(PWM發(fā)生器所掛起的PWMSyncTimeBasePWMPWM發(fā)生器1.10PWMSyncUpdate(voidPWMSyncUpdate(unsignedlongulBase,unsignedlong 無1.11PWMSyncTimeBase(voidPWMSyncTimeBase(unsignedlongulBase,unsignedlong 無PWMOutputState()8PWMPWM發(fā)生器產(chǎn)生的PWM信號是否輸出到管腳的最后一個開關(guān)。果bInvert為1，則反相PWM信號。PWMOutputFaultLevel()PWM的故障狀態(tài)時，PWM管腳的默認輸出1.12PWMOutputState(voidPWMOutputState(unsignedlongulBase,unsignedlongulPWMOutBits,tBoolean PWM端口的基址，取值PWM_Base 無1.13PWMOutputInvert(voidPWMOutputInvert(unsignedlongulBase,unsignedlongulPWMOutBits,tBoolean PWM端口的基址，取值PWM_Base 無1.14PWMOutputFaultLevelvoidPWMOutputFaultLevel(unsignedlongtBooleanbDriveHigh) PWM端口的基址，取值PWM_Base 無1.15PWMOutputFault(voidPWMOutputFault(unsignedlongtBooleanbFaultSuppress) PWM端口的基址，取值PWM_Base //故障時輸出PWMOutputFaultLevel() 無PWM發(fā)生器有豐富的中斷和觸發(fā)源，能在很多時刻產(chǎn)生中斷，使中斷變得非常靈活。對應的函數(shù)PWMGenIntUnregister()對已注冊的PWM發(fā)生器中斷函數(shù)注銷。PWMGenIntTrigEnableADC的事件進行使能，通過使能的ADCulIntTrig126個是中斷的時間，6個是ADC觸發(fā)時間。在遞減計數(shù)時，只有8個事件是有效的。PWMGenIntTrigDisable()對觸發(fā)事件進行禁能。起作用和上面的函數(shù)PWMGenIntTrigEnable()相反。PWMGenIntClear用來清除指定的中斷狀態(tài)，應該在進入中斷服務函數(shù)中，在獲1.16PWMGenIntRegister(注冊一個指定PWMvoidPWMGenIntRegister(unsignedlongulBase,unsignedlongulGen,voidulBase：PWM端口的基址，取值PWM_BaseulGen：PWM發(fā)生器的編號，取下列值之一：無1.17PWMGenIntUnregister(voidPWMGenIntUnregister(unsignedlongulBase,unsignedlongulBase：PWM端口的基址，取值PWM_BaseulGen：PWM發(fā)生器的編號，取下列值之一：無1.18PWMGenIntTrigEnable(voidPWMGenIntTrigEnable(unsignedlongulBase,unsignedlongulGen,unsignedlongulBase：PWM端口的基址，取值PWM_BaseulGen：PWM發(fā)生器的編號，取下列值之一：ulIntTrig：PWM發(fā)生器的中斷和觸發(fā)事件選擇，取下列值的邏輯或： //計數(shù)器為0時，觸發(fā)中斷 //計數(shù)器為裝載值時，觸發(fā)中斷 //比較器A遞增匹配時，觸發(fā)中斷 //比較器A遞減匹配時，觸發(fā)中斷 //比較器B遞增匹配時，觸發(fā)中斷 //比較器B遞減匹配時，觸發(fā)中斷 //計數(shù)器為0時，觸發(fā)ADC //計數(shù)器為裝載值時，觸發(fā)ADC //比較器A遞增匹配時，觸發(fā)ADC //比較器A遞減匹配時，觸發(fā)ADC //比較器B遞增匹配時，觸發(fā) 比較器B無1.19PWMGenIntTrigDisable(voidPWMGenIntTrigDisable(unsignedlongulBase,unsignedlongulGen,unsignedlongulBase：PWM端口的基址，取值PWM_BaseulGen：PWM發(fā)生器的編號，取下列值之一：ulIntTrig：PWM發(fā)生器的中斷和觸發(fā)事件選擇，取下列值的邏輯或： //計數(shù)器為0時，觸發(fā)中斷 //計數(shù)器為裝載值時，觸發(fā)中斷 //比較器A遞增匹配時，觸發(fā)中斷 //比較器A遞減匹配時，觸發(fā)中斷 //比較器B遞增匹配時，觸發(fā)中斷 //比較器B遞減匹配時，觸發(fā)中斷 //計數(shù)器為0時，觸發(fā)ADC //計數(shù)器為裝載值時，觸發(fā)ADC //比較器A遞增匹配時，觸發(fā)ADC //比較器A遞減匹配時，觸發(fā)ADC //比較器B遞增匹配時，觸發(fā) 比較器B無1.20PWMGenIntStatus(unsignedlongPWMGenIntStatus(unsignedlongulBase,unsignedlongulGen,tBooleanulBase：PWM端口的基址，取值PWM_BaseulGen：PWM發(fā)生器的編號，取下列值之一： 1.21PWMGenIntClear(voidPWMGenIntClear(unsignedlongulBase,unsignedlongulGen,unsignedlongulBase：PWM端口的基址，取值PWM_BaseulGen：PWM發(fā)生器的編號，取下列值之一： //計數(shù)器為0觸發(fā)的中斷 //計數(shù)器為裝載值觸發(fā)的中斷 //比較器A遞增匹配觸發(fā)的中斷 //比較器A遞減匹配觸發(fā)的中斷 //比較器B遞增匹配觸發(fā)的中 比較器B無PWMGenFaultConfigure(PWM發(fā)生器的故障檢測管腳電平和最小故障PWMGenConfigure()PWM_GEN_MODE_FAULT_函數(shù)PWMGenFaultTriggerSet()用來選擇用哪些Fault引腳作為指定的PWM發(fā)生器的錯PWMGenFaultTriggerGet(Fault1.22PWMGenFaultConfigure(voidPWMGenFaultConfigure(unsignedlongunsignedlongunsignedlongulFaultSenses)ulBase：PWM端口的基址，取值PWM_BaseulGen：PWM發(fā)生器的編號，取下列值之一：ulMinFaultPeriod：最小故障激活保持時長，PWM 無1.23PWMGenFaultTriggerSet(voidPWMGenFaultTriggerSet(unsignedlongunsignedlongunsignedlongulGroup,ulBase：PWM端口的基址，取值PWM_BaseulGen：PWM發(fā)生器的編號，取下列值之一：ulFaultTriggers：定義指定的PWM發(fā)生器使用哪個故障輸入作為觸發(fā)端，對于無1.24PWMGenFaultTriggerGetnsignedlongPWMGenFaultTriggerGet(unsignedlongunsignedlongulGen,ulBase：PWM端口的基址，取值PWM_BaseulGen：PWM發(fā)生器的編號，取下列值之一：1.25PWMGenFaultStatus(unsignedlongPWMGenFaultStatus(unsignedlongunsignedlongulGen,ulBase：PWM端口的基址，取值PWM_BaseulGen：PWM發(fā)生器的編號，取下列值之一：1.26PWMGenFaultClear(voidPWMGenFaultClear(unsignedlongunsignedlongunsignedlongulGroup,ulBase：PWM端口的基址，取值PWM_BaseulGen：PWM發(fā)生器的編號，取下列值之一：無)建議使用PWMFaultIntClearExt()。)1.27PWMFaultIntRegistervoidPWMFaultIntRegister(unsignedlongulBase,void 無1.28PWMFaultIntUnregistervoidPWMFaultIntUnregister(unsignedlongulBase：PWM無1.29PWMFaultIntClearvoidPWMFaultIntClear(unsignedlongulBase：PWM無1.30PWMFaultIntClearExt(voidPWMFaultIntClearExt(unsignedlongulBase,unsignedlongulBase：PWM端口的基址，取值PWM_Base無PWMIntEnable(PWM發(fā)生器的中斷和故障中斷。PWMIntDisable()1.31PWMIntEnable(voidPWMIntEnable(unsignedlongulBase,unsignedlongulBase：PWM端口的基址，取值PWM_Base無1.32PWMIntDisable(voidPWMIntDisable(unsignedlongulBase,unsignedlongulBase：PWM端口的基址，取值PWM_Base1.33PWMIntStatus(unsignedlongPWMIntStatus(unsignedlongulBase,tBoolean 端口的基址，取值 PWM1.1產(chǎn)生兩路簡單#include"hw_types.h"#include"sysctl.h"#include"gpioh"#include"pwm#define#definePH1_PWM3#defineKEY_PERIPH#defineKEY_PORT#defineintmain{SYSCTL_USE_OSC|SYSCTL_OSC_MAIN/*8MHz外部晶振作為主時鐘SysCtlPeripheralEnable/*使能KEYGPIO/*設置KEYif(GPIOPinRead(KEY_PORT,KEY_PIN)=={for}/*若復位時按下KEY/*PWM/*PWMPWM_GEN_MODE_UP_DOWNPWM_GEN_MODE_UP_DOWN|PWMGenPeriodSet(PWM_BASE,PWM_GEN_1,PWMPulseWidthSet(PWM_BASE,PWM_OUT_2,PWMPulseWidthSet(PWM_BASE,PWM_OUT_3,/*設置PWM發(fā)生器1/*PWM2/*PWM3PWMOutputState(PWM_BASE,(PWM_OUT_2_BIT|PWM_OUT_3_BIT),/*PWM2和PWM3PWMGenEnable(PWM_BASE,/*PWM/*開始產(chǎn)生PWM沿延時10μs。1.2帶死區(qū)PWMSysCtlPeripheralEnable使能KEYGPIO設置KEY/*設置PWM2輸出的脈沖寬 /*使能PWM死區(qū),并設置死區(qū)延 設置上升沿延時設置下降沿延時PWM_OUT_2_BIT|PWM2和PWM3開始產(chǎn)生PWMfor(;;)}1.3PWM#include"hw_types.h"#include"hw_ints.h"#include"interrupth"#include"sysctl.h"#include"gpioh"#include"pwmintmain{SysCtlClockSet(SYSCTL_SYSDIV_1| /*8MHz外部晶振作為主時鐘*/SYSCTL_USE_OSC|SYSCTL_OSC_MAIN|SysCtlPeripheralEnable /*使能KEY所在的GPIO端 /*設置KEY所在管腳為輸 if(GPIOPinRead(KEY_PORT,KEY_PIN)== /*若復位時按下KEY，則進 {for /*死循環(huán)，以等待JTAG連 } /*使能PWM2和PWM3輸出所在GPIO*/ /*使能PWM模塊 /*PWM時鐘配置：不分頻GPIOPinTypePWM(GPIO_PORTH_BASE,GPIO_PIN_0);/*PH0和PH1配置為PWM功能*/PWM