msp430 ti套件lm3slib pwm第1章脉冲宽度调制

( 函数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器来产生方波，并且可以通过调整方波的占空比来对模拟信号电平进行编码。PWM通常使StellarisARM4PWMPWM发生器模1个定时器（16位递减或先递增后递减计数器、2个比较器、1PWM信号发生器、1个死区发生器，以及一个中断/ADCPWM信号的极PWMPWMPWM信号可以是独立的信号（基于同一定时器因而频率相同的独立信号除外），也可以是一对插入了死区延迟的互补StellarisPWMPWM信号，如简易充电泵需要的信号；也可以产生带死区延迟的成对PWM信号，如半-H桥（half-HStellarisARMPWMPWM发生器运作时，定时器在不断计数并和两个比较器的值进行比较，可以在和比较器16PWM1.11.1PWMD/A1.2PWMPWM定时器有两种工作模式：递减计数模式或先递增后递减计数模式。在递减计数模PWM信号，而先递增后递减计数模式是用来产生中心对齐的PWM信号。PWM3PWM信号的过程中使用。一个是方向信平之间切换0时，零脉冲信号发PWMPWM信号的过程中使用。如果任一比较器的值大于计数器的装载值，则该比较器永远不会左对齐的一对PWM波形。1.3左对齐PWM1.4中心对齐PWMbridge1.5PWM运行（即令PWM输出无效，以避免其长时间处于危险的运行状态。FaultPWM信号输PWM5种信号：zero、load、dir、cmpA、cmpB都可以触发中断，或者触发ADC转换。使控制非常灵活。PWMGenConfigure()PWM发生器模式进行设置，包括定时器的计数模()PWMPulseWidthSet(PWMPWMPWMGenPeriodSet()里设置的值，也就是占空比不能大于100%。调用函数PWMGenEnablePWMPWM发送器的定时器开始运作。反之函数PWMGenDisable()则禁止PWM定时器运作。1.1PWMGenConfigure(voidPWMGenConfigure(unsignedlongulBase,unsignedlongulGen,unsignedlongulBase：PWMulGen：PWM // //发生器不同步模式PWM_GEN_MODE_GEN_SYNC_LOCAL//发生器局部同步模式PWM_GEN_MODE_GEN_SYNC_GLOBAL//全局发生器同步模式 //不同步 //局部同步PWM_GEN_MODE_DB_SYNC_GLOBAL//全局发生器同步模式 PWM_GEN_MODE_FAULT_UNLATCHED// //PWM_GEN_MODE_FAULT_NO_MINPER// //Fault0 //PWMnFLTSRC0无1.2PWMGenPeriodSetvoidPWMGenPeriodSet(unsignedlongulBase,unsignedlongulGen,unsignedlongulBase：PWM端口的基址，取值PWM_BaseulGen：PWM发生器的编号，取下列值之一：无1.3PWMGenPeriodGetunsignedlongPWMGenPeriodGet(unsignedlongulBase,unsignedlongulBase：PWM端口的基址，取值PWM_BaseulGen：PWM发生器的编号，取下列值之一：1.4PWMPulseWidthSet(voidPWMPulseWidthSet(unsignedlongulBase,unsignedlongulPWMOut,unsignedlongulBase：PWM端口的基址，取值PWM_Base PWM的高电平宽度，宽度值是PWM无1.5PWMPulseWidthGet(unsignedlongPWMPulseWidthGet(unsignedlongulBase,unsignedlongulBase：PWM端口的基址，取值PWM_Base PWM的高电平宽度，宽度值是PWM计数器的计时时钟数，类型为unsignedlong1.6PWMGenEnable(voidPWMGenEnable(unsignedlongulBase,unsignedlongulBase：PWM端口的基址，取值PWM_BaseulGen：PWM发生器的编号，取下列值之一：无1.7PWMGenDisable(voidPWMGenDisable(unsignedlongulBase,unsignedlongulBase：PWM端口的基址，取值PWM_BaseulGen：PWM发生器的编号，取下列值之一：无PWMDeadBandEnablePWM发生器的死区时间，并打开死区功能，脉冲个数。调用该函数配置好后，PWMPWM就是一对带死区的反相的1.8PWMDeadBandEnable(voidPWMDeadBandEnable(unsignedlongunsignedlongulGen,unsignedshortunsignedshortulBase：PWM端口的基址，取值PWM_BaseulGen：PWM发生器的编号，取下列值之一：无1.9PWMDeadBandDisable(voidPWMDeadBandDisable(unsignedlongulBase,unsignedlongulBase：PWM端口的基址，取值PWM_BaseulGen：PWM发生器的编号，取下列值之一：无PWMSyncUpdate(PWM发生器所挂起的PWMSyncTimeBasePWMPWM发生器1.10PWMSyncUpdate(voidPWMSyncUpdate(unsignedlongulBase,unsignedlong 无1.11PWMSyncTimeBase(voidPWMSyncTimeBase(unsignedlongulBase,unsignedlong 无PWMOutputState()8PWMPWM发生器产生的PWM信号是否输出到管脚的最后一个开关。果bInvert为1，则反相PWM信号。PWMOutputFaultLevel()PWM的故障状态时，PWM管脚的默认输出1.12PWMOutputState(voidPWMOutputState(unsignedlongulBase,unsignedlongulPWMOutBits,tBoolean PWM端口的基址，取值PWM_Base 无1.13PWMOutputInvert(voidPWMOutputInvert(unsignedlongulBase,unsignedlongulPWMOutBits,tBoolean PWM端口的基址，取值PWM_Base 无1.14PWMOutputFaultLevelvoidPWMOutputFaultLevel(unsignedlongtBooleanbDriveHigh) PWM端口的基址，取值PWM_Base 无1.15PWMOutputFault(voidPWMOutputFault(unsignedlongtBooleanbFaultSuppress) PWM端口的基址，取值PWM_Base //故障时输出PWMOutputFaultLevel() 无PWM发生器有丰富的中断和触发源，能在很多时刻产生中断，使中断变得非常灵活。对应的函数PWMGenIntUnregister()对已注册的PWM发生器中断函数注销。PWMGenIntTrigEnableADC的事件进行使能，通过使能的ADCulIntTrig126个是中断的时间，6个是ADC触发时间。在递减计数时，只有8个事件是有效的。PWMGenIntTrigDisable()对触发事件进行禁能。起作用和上面的函数PWMGenIntTrigEnable()相反。PWMGenIntClear用来清除指定的中断状态，应该在进入中断服务函数中，在获1.16PWMGenIntRegister(注册一个指定PWMvoidPWMGenIntRegister(unsignedlongulBase,unsignedlongulGen,voidulBase：PWM端口的基址，取值PWM_BaseulGen：PWM发生器的编号，取下列值之一：无1.17PWMGenIntUnregister(voidPWMGenIntUnregister(unsignedlongulBase,unsignedlongulBase：PWM端口的基址，取值PWM_BaseulGen：PWM发生器的编号，取下列值之一：无1.18PWMGenIntTrigEnable(voidPWMGenIntTrigEnable(unsignedlongulBase,unsignedlongulGen,unsignedlongulBase：PWM端口的基址，取值PWM_BaseulGen：PWM发生器的编号，取下列值之一：ulIntTrig：PWM发生器的中断和触发事件选择，取下列值的逻辑或： //计数器为0时，触发中断 //计数器为装载值时，触发中断 //比较器A递增匹配时，触发中断 //比较器A递减匹配时，触发中断 //比较器B递增匹配时，触发中断 //比较器B递减匹配时，触发中断 //计数器为0时，触发ADC //计数器为装载值时，触发ADC //比较器A递增匹配时，触发ADC //比较器A递减匹配时，触发ADC //比较器B递增匹配时，触发 比较器B无1.19PWMGenIntTrigDisable(voidPWMGenIntTrigDisable(unsignedlongulBase,unsignedlongulGen,unsignedlongulBase：PWM端口的基址，取值PWM_BaseulGen：PWM发生器的编号，取下列值之一：ulIntTrig：PWM发生器的中断和触发事件选择，取下列值的逻辑或： //计数器为0时，触发中断 //计数器为装载值时，触发中断 //比较器A递增匹配时，触发中断 //比较器A递减匹配时，触发中断 //比较器B递增匹配时，触发中断 //比较器B递减匹配时，触发中断 //计数器为0时，触发ADC //计数器为装载值时，触发ADC //比较器A递增匹配时，触发ADC //比较器A递减匹配时，触发ADC //比较器B递增匹配时，触发 比较器B无1.20PWMGenIntStatus(unsignedlongPWMGenIntStatus(unsignedlongulBase,unsignedlongulGen,tBooleanulBase：PWM端口的基址，取值PWM_BaseulGen：PWM发生器的编号，取下列值之一： 1.21PWMGenIntClear(voidPWMGenIntClear(unsignedlongulBase,unsignedlongulGen,unsignedlongulBase：PWM端口的基址，取值PWM_BaseulGen：PWM发生器的编号，取下列值之一： //计数器为0触发的中断 //计数器为装载值触发的中断 //比较器A递增匹配触发的中断 //比较器A递减匹配触发的中断 //比较器B递增匹配触发的中 比较器B无PWMGenFaultConfigure(PWM发生器的故障检测管脚电平和最小故障PWMGenConfigure()PWM_GEN_MODE_FAULT_函数PWMGenFaultTriggerSet()用来选择用哪些Fault引脚作为指定的PWM发生器的错PWMGenFaultTriggerGet(Fault1.22PWMGenFaultConfigure(voidPWMGenFaultConfigure(unsignedlongunsignedlongunsignedlongulFaultSenses)ulBase：PWM端口的基址，取值PWM_BaseulGen：PWM发生器的编号，取下列值之一：ulMinFaultPeriod：最小故障激活保持时长，PWM 无1.23PWMGenFaultTriggerSet(voidPWMGenFaultTriggerSet(unsignedlongunsignedlongunsignedlongulGroup,ulBase：PWM端口的基址，取值PWM_BaseulGen：PWM发生器的编号，取下列值之一：ulFaultTriggers：定义指定的PWM发生器使用哪个故障输入作为触发端，对于无1.24PWMGenFaultTriggerGetnsignedlongPWMGenFaultTriggerGet(unsignedlongunsignedlongulGen,ulBase：PWM端口的基址，取值PWM_BaseulGen：PWM发生器的编号，取下列值之一：1.25PWMGenFaultStatus(unsignedlongPWMGenFaultStatus(unsignedlongunsignedlongulGen,ulBase：PWM端口的基址，取值PWM_BaseulGen：PWM发生器的编号，取下列值之一：1.26PWMGenFaultClear(voidPWMGenFaultClear(unsignedlongunsignedlongunsignedlongulGroup,ulBase：PWM端口的基址，取值PWM_BaseulGen：PWM发生器的编号，取下列值之一：无)建议使用PWMFaultIntClearExt()。)1.27PWMFaultIntRegistervoidPWMFaultIntRegister(unsignedlongulBase,void 无1.28PWMFaultIntUnregistervoidPWMFaultIntUnregister(unsignedlongulBase：PWM无1.29PWMFaultIntClearvoidPWMFaultIntClear(unsignedlongulBase：PWM无1.30PWMFaultIntClearExt(voidPWMFaultIntClearExt(unsignedlongulBase,unsignedlongulBase：PWM端口的基址，取值PWM_Base无PWMIntEnable(PWM发生器的中断和故障中断。PWMIntDisable()1.31PWMIntEnable(voidPWMIntEnable(unsignedlongulBase,unsignedlongulBase：PWM端口的基址，取值PWM_Base无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产生两路简单#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外部晶振作为主时钟SysCtlPeripheralEnable/*使能KEYGPIO/*设置KEYif(GPIOPinRead(KEY_PORT,KEY_PIN)=={for}/*若复位时按下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,/*设置PWM发生器1/*PWM2/*PWM3PWMOutputState(PWM_BASE,(PWM_OUT_2_BIT|PWM_OUT_3_BIT),/*PWM2和PWM3PWMGenEnable(PWM_BASE,/*PWM/*开始产生PWM沿延时10µs。1.2带死区PWMSysCtlPeripheralEnable使能KEYGPIO设置KEY/*设置PWM2输出的脉冲宽 /*使能PWM死区,并设置死区延 设置上升沿延时设置下降沿延时PWM_OUT_2_BIT|PWM2和PWM3开始产生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外部晶振作为主时钟*/SYSCTL_USE_OSC|SYSCTL_OSC_MAIN|SysCtlPeripheralEnable /*使能KEY所在的GPIO端 /*设置KEY所在管脚为输 if(GPIOPinRead(KEY_PORT,KEY_PIN)== /*若复位时按下KEY，则进 {for /*死循环，以等待JTAG连 } /*使能PWM2和PWM3输出所在GPIO*/ /*使能PWM模块 /*PWM时钟配置：不分频GPIOPinTypePWM(GPIO_PORTH_BASE,GPIO_PIN_0);/*PH0和PH1配置为PWM功能*/PWM