STM8S TIM1 PWM初始化设置

#define TIM1_DIV1 (uint16)(1-1)

#define TIM1_DIV2 (uint16)(2-1)

#define TIM1_DIV4 (uint16)(4-1)

#define TIM1_DIV8 (uint16)(8-1)

#define TIM1_DIV16 (uint16)(16-1)

#define TIM1_DIV32 (uint16)(32-1)

//timer1 PWM 输出到管脚使能

_Bool   PWMAOUT_PINENBLE  @TIM1_CCER1:0 ;//TIM1_CH1 -- PC6

_Bool   PWMBOUT_PINENBLE  @TIM1_CCER1:4 ;//TIM1_CH2 -- PC7

_Bool   PWMCOUT_PINENBLE  @TIM1_CCER2:0 ;//TIM1_CH3 -- PC3

// PWM 频率设定

#define V_PWMFRE  1000

#define ToCMPxH(CMP,Value) (CMP = (uint8)((Value >> 8 ) & 0xFF))

#define ToCMPxL(CMP,Value) (CMP = (uint8)(Value & 0xFF))

//*************************************

// 函数名称：Init_Timer1_PWM

// 函数功能：定时器1作PWM输出时初始化

// 入口参数：PWM等级 每级0.625U (1000*0.625 = 62.5U = 8K)

// 出口参数：无

// 此初始化设置应用在BLDC 三相PWM输出

//***************************************

void Init_Timer1_PWM(uint16 Tcon,uint16 Pscr)

{

//16M系统时钟经预分频f=fck/(PSCR+1)  

TIM1_PSCRH = (Pscr >> 8) & 0xff ;

TIM1_PSCRL = Pscr & 0xff ;

//设定重装载时的寄存器值，255是最大值

TIM1_ARRH = (Tcon >> 8) & 0xff ;

TIM1_ARRL = Tcon & 0xff ;

//设置刹车寄存器

TIM1_BKR|=0X80 ;

//PWM1模式,TIM1_CNT

TIM1_CCMR1 =0x6C ;

//PWM1模式,TIM1_CNT

TIM1_CCMR2 =0x6C ;

//PWM1模式,TIM1_CNT

TIM1_CCMR3 =0x6C ;

//冻结模式,TIM1_CNT

TIM1_CCMR4 =0x08 ;

//PWM 占空比 清0

TIM1_CCR1H = 0;

TIM1_CCR1L = 0;

TIM1_CCR2H = 0;

TIM1_CCR2L = 0;

TIM1_CCR3H = 0;

TIM1_CCR3L = 0;

TIM1_EGR = 0X01 ; //UG = 1 ;初始化计数器 预装载载入影子寄存器中

TIM1_CNTRH = 0 ;  //计数器清0

TIM1_CNTRL = 0 ;

TIM1_CR1 |= 0X01;  // 计数器使能，开始计数

}

//*************************************

// 函数名称：TOPWMVALUE

// 函数功能：设置PWM占空比

// 入口参数：占空比值

// 出口参数：无

//***************************************

void TOPWMVALUE(uint16 OUT_PWM)

{

ToCMPxH(TIM1_CCR1H,OUT_PWM);

ToCMPxL(TIM1_CCR1L,OUT_PWM);

ToCMPxH(TIM1_CCR2H,OUT_PWM);

ToCMPxL(TIM1_CCR2L,OUT_PWM);

ToCMPxH(TIM1_CCR3H,OUT_PWM);

ToCMPxL(TIM1_CCR3L,OUT_PWM);

}

//----实例应用------

//定时器1初始化

Init_Timer1_PWM(V_PWMFRE,TIM1_DIV2) ;//16M/2=8M   设置8K PWM输出