TI中文支持网//EVA模块 //主要设置T1PWM引脚 EvaRegs.T1PR = 2929; //约为2.5MS PWM周期为（T1PR+1）/(75/64)M=2.5ms EvaRegs.T1CMPR = 0; //Timer1 compare EvaRegs.T1CNT = 0x0000; //Timer1 counter EvaRegs.T1CON.all = 0x1602; //连续增计数模式，使能定时器，比较使能,设置高速时钟64分频 // EvaRegs.T1CON.bit.TPS = 6; //设置高速时钟64分频 //主要设置T2PWM引脚 EvaRegs.T2PR = 2929; //Timer2 period EvaRegs.T2CMPR = 0; //Timer2 compare EvaRegs.T2CNT = 0x0000; //Timer2 counter EvaRegs.T2CON.all = 0x1602; //连续增计数模式，使能定时器，比较使能，与T1同步,设置高速时钟64分频 // EvaRegs.T2CON.bit.TPS = 6; //设置高速时钟64分频 EvaRegs.GPTCONA.bit.TCOMPOE = 1;//设置引脚T1PWM_T1CMP,T2PWM_T2CMP由定时器1和2独立驱动PWM EvaRegs.GPTCONA.bit.T1PIN = 1;//设置低有效 EvaRegs.GPTCONA.bit.T2PIN = 1;//设置低有效 //EVB模块 //主要设置T3PWM引脚 EvbRegs.T3PR = 2929; //Timer1 period EvbRegs.T3CMPR = 0; //Timer1 compare EvbRegs.T3CNT = 0x0000; //Timer1 counter EvbRegs.T3CON.all = 0x1602; //连续增计数模式，使能定时器，比较使能,设置高速时钟64分频 // EvbRegs.T3CON.bit.TPS = 6; //设置高速时钟64分频 = 2*2*2*2*2*2 = 2^6 //主要设置T4PWM引脚 EvbRegs.T4PR = 2929; //Timer2 period EvbRegs.T4CMPR = 0; //Timer2 compare EvbRegs.T4CNT = 0x0000; //Timer2 counter EvbRegs.T4CON.all = 0x1602; //连续增计数模式，使能定时器，比较使能，与T3同步,设置高速时钟64分频 // EvbRegs.T4CON.bit.TPS = 6; //设置高速时钟64分频 = 2*2*2*2*2*2 = 2^6 EvbRegs.GPTCONB.bit.TCOMPOE = 1;//设置引脚T1PWM_T1CMP,T2PWM_T2CMP由定时器1和2独立驱动PWM EvbRegs.GPTCONB.bit.T3PIN = 1;//设置低有效 EvbRegs.GPTCONB.bit.T4PIN = 1;//设置低有效 // EvaRegs.COMCONA.bit.CENABLE=1;//使能比较单元的比较操作 //EvaRegs.COMCONA.bit.FCOMPOE=1;//全比较输出，PWM1-6引脚均由相应的比较逻辑驱动 // EvaRegs.COMCONA.bit.CLD=2; // EvbRegs.COMCONB.bit.CENABLE=1;//使能比较单元的比较操作 // EvbRegs.COMCONB.bit.FCOMPOE=1;//全比较输出，PWM7-12引脚均由相应的比较逻辑驱动 // EvbRegs.COMCONB.bit.CLD=2;EvaRegs.EVAIMRA.bit.T1PINT=1;//使能周期中断EvaRegs.EVAIFRA.bit.T1PINT=1;//周期中断标志位清除
mangui zhang：
如果正常情况 CPMR改变肯定会改变PWM波的占空比
你是不是侧错引脚了
//EVA模块 //主要设置T1PWM引脚 EvaRegs.T1PR = 2929; //约为2.5MS PWM周期为（T1PR+1）/(75/64)M=2.5ms EvaRegs.T1CMPR = 0; //Timer1 compare EvaRegs.T1CNT = 0x0000; //Timer1 counter EvaRegs.T1CON.all = 0x1602; //连续增计数模式，使能定时器，比较使能,设置高速时钟64分频 // EvaRegs.T1CON.bit.TPS = 6; //设置高速时钟64分频 //主要设置T2PWM引脚 EvaRegs.T2PR = 2929; //Timer2 period EvaRegs.T2CMPR = 0; //Timer2 compare EvaRegs.T2CNT = 0x0000; //Timer2 counter EvaRegs.T2CON.all = 0x1602; //连续增计数模式，使能定时器，比较使能，与T1同步,设置高速时钟64分频 // EvaRegs.T2CON.bit.TPS = 6; //设置高速时钟64分频 EvaRegs.GPTCONA.bit.TCOMPOE = 1;//设置引脚T1PWM_T1CMP,T2PWM_T2CMP由定时器1和2独立驱动PWM EvaRegs.GPTCONA.bit.T1PIN = 1;//设置低有效 EvaRegs.GPTCONA.bit.T2PIN = 1;//设置低有效 //EVB模块 //主要设置T3PWM引脚 EvbRegs.T3PR = 2929; //Timer1 period EvbRegs.T3CMPR = 0; //Timer1 compare EvbRegs.T3CNT = 0x0000; //Timer1 counter EvbRegs.T3CON.all = 0x1602; //连续增计数模式，使能定时器，比较使能,设置高速时钟64分频 // EvbRegs.T3CON.bit.TPS = 6; //设置高速时钟64分频 = 2*2*2*2*2*2 = 2^6 //主要设置T4PWM引脚 EvbRegs.T4PR = 2929; //Timer2 period EvbRegs.T4CMPR = 0; //Timer2 compare EvbRegs.T4CNT = 0x0000; //Timer2 counter EvbRegs.T4CON.all = 0x1602; //连续增计数模式，使能定时器，比较使能，与T3同步,设置高速时钟64分频 // EvbRegs.T4CON.bit.TPS = 6; //设置高速时钟64分频 = 2*2*2*2*2*2 = 2^6 EvbRegs.GPTCONB.bit.TCOMPOE = 1;//设置引脚T1PWM_T1CMP,T2PWM_T2CMP由定时器1和2独立驱动PWM EvbRegs.GPTCONB.bit.T3PIN = 1;//设置低有效 EvbRegs.GPTCONB.bit.T4PIN = 1;//设置低有效 // EvaRegs.COMCONA.bit.CENABLE=1;//使能比较单元的比较操作 //EvaRegs.COMCONA.bit.FCOMPOE=1;//全比较输出，PWM1-6引脚均由相应的比较逻辑驱动 // EvaRegs.COMCONA.bit.CLD=2; // EvbRegs.COMCONB.bit.CENABLE=1;//使能比较单元的比较操作 // EvbRegs.COMCONB.bit.FCOMPOE=1;//全比较输出，PWM7-12引脚均由相应的比较逻辑驱动 // EvbRegs.COMCONB.bit.CLD=2;EvaRegs.EVAIMRA.bit.T1PINT=1;//使能周期中断EvaRegs.EVAIFRA.bit.T1PINT=1;//周期中断标志位清除
bolin li：
回复 mangui zhang:
不会啊，我是用示波器测的，另外，中断会影响到占空比吗？
