《固定占空比PWM波形输出程序》由会员分享，可在线阅读，更多相关《固定占空比PWM波形输出程序（2页珍藏版）》请在装配图网上搜索。
1、程序一：系统初试化程序 include t,DSP28_Device.hM void InitSysCtrl(void)Uintl6i;EALLOVV;DevEmuRegs.MORAMDFT = 0x0300;DevEmuRegs.MlRAMDFT = 0x0300;DevEmuRegs.LORAMDFT = 0x0300;DevEmuRegs.LlRAMDFT = 0x0300;DevEmuRegs.HORAMDFT = 0x0300;SysCtrIRegs.VVDCR= 0x0068;SysCtrIRegs.PLLCR = Ox A;for(i= 0; i 5000; i+)SysCtrI
2、Regs.HISPCP.all = 0x0001;SysCtrIRegs.LOSPCP.all = 0x0002;SysCtrIRegs.PCLKCR.biLEVAENCLK=l;SysCtrIRegs.PCLKCR.biLEVBENCLK=l; EDIS;void KickDog(void)EALLOW;SysCtrlRegs.WDKEY = 0x0055;SysCtrlRegs.WDKEY = OxOOAA;EDIS;程序四：主程序include HDSP28_Device.hM#include 1 * DSP28_Globa Iprototy pes.h11 void main(void
3、)InitSysCtrK);DINT;IER = 0x0000;IFR = 0x0000;InitPieCtrlO;InitPieVectTableO;InitGpioO;InitEvO;EvaRegs.TlCONTENABLE=l;EvaRegs.T2CONTENABLE=l;EvbRegs.T3CON.bitTENABLE=l;EvbRegs.T4CON.bitTENABLE=l; whiled) 程序说明程序二：Gpio 口初始化 include t,DSP28_Device.hM本程序实现的是在PWM1, PWM3, PWM5三个口输出 占空比为5 0 %,频率为5KHZ的对称方波。本
4、程序参 照书上固定占空比PWM波形产生程序改写而成。void InitGpio(void)EALLOWGpioMuxRegs.GPAMUXbiLTlPVVM_GPIOA6=l;GpioMuxRegs.GPAMUXbiLT2PVVM_GPIOA7=l;GpioMuxRegs.GPAMUXbit.PVVMl_GPIOAO=l;GpioMuxRegs.GPAMUXbit.PVVM2_GPIOAl=l;GpioMuxRegs.GPAMUXbit.PVVM3.GPIOA2=l;GpioMuxRegs.GPAMUXbit.PVVM4_GPIOA3=l;GpioMuxRegs.GPAMUXbit.PVVM5
5、_GPIOA4=l;GpioMuxRegs.GPBMUX.bit.T3PVVM_GPIOB6= 1;GpioMuxRegs.GPBMUX.bit.T4PVVM_GPIOB7=l;GpioMuxRegs.GPBMUXbit.PWM7_GPIOBO=l;GpioMuxRegs.GPBMUXbit.PWM8_GPIOBl=l;GpioMuxRegs.GPBMUXbit.PWM9_GPIOB2=l;GpioMuxRegs.GPBMUXbit.PWM10_GPIOB3=l;GpioMuxRegs.GPBMUX.bit.PWM 11_GPIOB4= 1;GpioMuxRegs.GPBMUXTCOMPOE=
6、1;EvaRegs.GPTCONATCOMPOE=1;EvbRegs.GPTCONB.bit.T3PIN=l;EvbRegs.GPTCONB.bit.T4PIN=2;EvbRegs.T3PR=0x493E;EvbRegs.T3CMPR=0x 1D4C;EvbRegs.T3CNT=0;EvbRegs.T4PR=0x493E;EvbRegs.T4CMPR=0x2BF2;EvbRegs.T4CNT=0;EvbRegs.COMCONB.bit.CENABLE=l; EvbRegs.COMCONB.bit.FCOMPOE=l; EvbRegs.COMCONB.bit.CLD=2;EvbRegs.DBTCONB.bit.DBT=10;EvbRegs.DBTCONB.bit.EDBTl=l;EvbRegs.DBTCONB.bitEDBT2=l;EvbRegs.DBTCONB.biLEDBT3=l;EvbRegs.DBTCONB.bit.DBTPS=4, EvbRegs.ACTRB.all=0x0999;EvbRegs.CMPR4=0xlD4C;EvbRegs.CMPR5=0xlD4C;EvbRegs.CMPR6=0xlD4C;
固定占空比PWM波形输出程序
