Ejemplo n.º 1
0
/**
  * @brief  Configure the TIMER peripheral.
  * @param  None
  * @retval None
  */
void TIMER_Configuration(void)
{
    /* ---------------------------------------------------------------
    TIMER2 Configuration: 
    TIMER2CLK = SystemCoreClock / 36000 = 2K,
    And generate 3 signals with 3 different delays:
    TIMER2_CH1 delay = 4000/2000  = 2s
    TIMER2_CH2 delay = 8000/2000  = 4s
    TIMER2_CH3 delay = 12000/2000 = 6s
    --------------------------------------------------------------- */
    TIMER_BaseInitPara TIMER_TimeBaseStructure;
    TIMER_OCInitPara  TIMER_OCInitStructure;

    /* TIMERS clock enable */
    RCC_APB2PeriphClock_Enable(RCC_APB2PERIPH_TIMER1|RCC_APB2PERIPH_TIMER15|RCC_APB2PERIPH_TIMER16|RCC_APB2PERIPH_TIMER17,ENABLE);
    RCC_APB1PeriphClock_Enable(RCC_APB1PERIPH_TIMER2|RCC_APB1PERIPH_TIMER3|RCC_APB1PERIPH_TIMER6|RCC_APB1PERIPH_TIMER14,ENABLE);

    /* TIMER2  configuration */
    TIMER_DeInit(TIMER2);
    TIMER_TimeBaseStructure.TIMER_Prescaler     = 35999;
    TIMER_TimeBaseStructure.TIMER_CounterMode   = TIMER_COUNTER_UP;
    TIMER_TimeBaseStructure.TIMER_Period        = 19999;
    TIMER_TimeBaseStructure.TIMER_ClockDivision = TIMER_CDIV_DIV1;
    TIMER_BaseInit(TIMER2,&TIMER_TimeBaseStructure);

    /* CH1,CH2 and CH3 Configuration in OC_ACTIVE mode */
    TIMER_OCInitStructure.TIMER_OCMode      = TIMER_OC_MODE_ACTIVE;
    TIMER_OCInitStructure.TIMER_OCPolarity  = TIMER_OC_POLARITY_HIGH;
    TIMER_OCInitStructure.TIMER_OutputState = TIMER_OUTPUT_STATE_ENABLE;

      
    TIMER_OCInitStructure.TIMER_Pulse = 3999;
    TIMER_OC1_Init(TIMER2, &TIMER_OCInitStructure);
    TIMER_OC1_Preload(TIMER2,TIMER_OC_PRELOAD_DISABLE);

    TIMER_OCInitStructure.TIMER_Pulse = 7999;
    TIMER_OC2_Init(TIMER2, &TIMER_OCInitStructure);
    TIMER_OC2_Preload(TIMER2,TIMER_OC_PRELOAD_DISABLE);

    TIMER_OCInitStructure.TIMER_Pulse = 11999;
    TIMER_OC3_Init(TIMER2, &TIMER_OCInitStructure);
    TIMER_OC3_Preload(TIMER2,TIMER_OC_PRELOAD_DISABLE);

    /* Auto-reload preload enable */
    TIMER_CARLPreloadConfig(TIMER2,ENABLE);
    /* TIMER enable counter*/
    TIMER_Enable( TIMER2, ENABLE );
}
Ejemplo n.º 2
0
/**
  * @brief  Configure the TIMER peripheral.
  * @param  None
  * @retval None
  */
void TIMER_Configuration(void)
{
    /* -----------------------------------------------------------------------
    TIMER2 Configuration: generate 3 PWM signals with 3 different duty cycles:
    TIMER2CLK = SystemCoreClock / 72 = 1MHz

    TIMER2 Channel2 duty cycle = (4000/ 16000)* 100  = 25%
    TIMER2 Channel3 duty cycle = (8000/ 16000)* 100  = 50%
    TIMER2 Channel4 duty cycle = (12000/ 16000)* 100 = 75%
    ----------------------------------------------------------------------- */
    TIMER_BaseInitPara TIMER_TimeBaseStructure;
    TIMER_OCInitPara  TIMER_OCInitStructure;

    /* TIMERS clock enable */
    RCC_APB2PeriphClock_Enable(RCC_APB2PERIPH_TIMER1|RCC_APB2PERIPH_TIMER15|RCC_APB2PERIPH_TIMER16|RCC_APB2PERIPH_TIMER17,ENABLE);
    RCC_APB1PeriphClock_Enable(RCC_APB1PERIPH_TIMER2|RCC_APB1PERIPH_TIMER3|RCC_APB1PERIPH_TIMER6|RCC_APB1PERIPH_TIMER14,ENABLE);

    /* TIMER2  configuration */
    TIMER_DeInit(TIMER2);
    TIMER_TimeBaseStructure.TIMER_Prescaler     = 71;
    TIMER_TimeBaseStructure.TIMER_CounterMode   = TIMER_COUNTER_UP;
    TIMER_TimeBaseStructure.TIMER_Period        = 15999;
    TIMER_TimeBaseStructure.TIMER_ClockDivision = TIMER_CDIV_DIV1;
    TIMER_BaseInit(TIMER2,&TIMER_TimeBaseStructure);

    /* CH2,CH3 and CH4 Configuration in PWM mode */
    TIMER_OCInitStructure.TIMER_OCMode      = TIMER_OC_MODE_PWM1;
    TIMER_OCInitStructure.TIMER_OCPolarity  = TIMER_OC_POLARITY_HIGH;
    TIMER_OCInitStructure.TIMER_OutputState = TIMER_OUTPUT_STATE_ENABLE;

    TIMER_OCInitStructure.TIMER_Pulse = 3999;
    TIMER_OC2_Init(TIMER2, &TIMER_OCInitStructure);
    TIMER_OC2_Preload(TIMER2,TIMER_OC_PRELOAD_DISABLE);

    TIMER_OCInitStructure.TIMER_Pulse = 7999;
    TIMER_OC3_Init(TIMER2, &TIMER_OCInitStructure);
    TIMER_OC3_Preload(TIMER2,TIMER_OC_PRELOAD_DISABLE);

    TIMER_OCInitStructure.TIMER_Pulse = 11999;
    TIMER_OC4_Init(TIMER2, &TIMER_OCInitStructure);
    TIMER_OC4_Preload(TIMER2,TIMER_OC_PRELOAD_DISABLE);

    /* Auto-reload preload enable */
    TIMER_CARLPreloadConfig(TIMER2,ENABLE);
    /* TIMER enable counter*/
    TIMER_Enable( TIMER2, ENABLE );
}
Ejemplo n.º 3
0
void pwm_init(void)
{
	
    GPIO_InitPara GPIO_InitStructure;

	// timer 3 pin PB1 config ( ch4 )
    GPIO_InitStructure.GPIO_Pin = GPIO_PIN_1;
    GPIO_InitStructure.GPIO_Mode = GPIO_MODE_AF;
    GPIO_InitStructure.GPIO_Speed = GPIO_SPEED_50MHZ;
    GPIO_InitStructure.GPIO_OType = GPIO_OTYPE_PP;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PUPD_PULLDOWN;
    GPIO_Init(GPIOB,&GPIO_InitStructure);
		
    GPIO_PinAFConfig(GPIOB,GPIO_PINSOURCE1,GPIO_AF_1);
	
	// GPIO pins PA8 , 9 ,10 setup ( Timer1 ch 1 , 2 , 3)
	  GPIO_InitStructure.GPIO_Pin = GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10;

    GPIO_Init(GPIOA,&GPIO_InitStructure);
		
    GPIO_PinAFConfig(GPIOA,GPIO_PINSOURCE8,GPIO_AF_2);
	  GPIO_PinAFConfig(GPIOA,GPIO_PINSOURCE9,GPIO_AF_2);
		GPIO_PinAFConfig(GPIOA,GPIO_PINSOURCE10,GPIO_AF_2);
	
    TIMER_BaseInitPara TIM_TimeBaseStructure;

    RCC_APB2PeriphClock_Enable(RCC_APB2PERIPH_TIMER1,ENABLE);
    RCC_APB1PeriphClock_Enable(RCC_APB1PERIPH_TIMER3,ENABLE);

// TIMER3 for pins A8 A9 A10

    TIM_TimeBaseStructure.TIMER_Prescaler = TIMER_PRESCALER - 1;  //
    TIM_TimeBaseStructure.TIMER_CounterMode = TIMER_COUNTER_UP;
    TIM_TimeBaseStructure.TIMER_Period = PWMTOP;
    TIM_TimeBaseStructure.TIMER_ClockDivision = TIMER_CDIV_DIV1;
    TIMER_BaseInit(TIMER3,&TIM_TimeBaseStructure);
		

 //Ch1 , 2 , 3 
    TIM_OCInitStructure.TIMER_OCMode = TIMER_OC_MODE_PWM1;
    TIM_OCInitStructure.TIMER_OCPolarity = OUT_POLARITY;
    TIM_OCInitStructure.TIMER_OutputState = TIMER_OUTPUT_STATE_ENABLE;
    TIM_OCInitStructure.TIMER_OCIdleState = TIMER_OC_IDLE_STATE_RESET;
		
    TIM_OCInitStructure.TIMER_Pulse = 0;
    TIMER_OC4_Init(TIMER3, &TIM_OCInitStructure);

	TIMER_CtrlPWMOutputs(TIMER3,ENABLE);

    TIMER_CARLPreloadConfig(TIMER3,ENABLE);

    TIMER_Enable( TIMER3, ENABLE );
		
    TIMER_BaseInit(TIMER1,&TIM_TimeBaseStructure);

    TIMER_OC1_Init(TIMER1, &TIM_OCInitStructure);

    TIMER_OC2_Init(TIMER1, &TIM_OCInitStructure);

    TIMER_OC3_Init(TIMER1, &TIM_OCInitStructure);
		
	TIMER_CtrlPWMOutputs(TIMER1,ENABLE);	
		
    TIMER_CARLPreloadConfig(TIMER1,ENABLE);

	TIMER_OC1_Preload(TIMER1,ESC_PRELOAD);
	TIMER_OC2_Preload(TIMER1,ESC_PRELOAD);
	TIMER_OC3_Preload(TIMER1,ESC_PRELOAD);
	TIMER_OC4_Preload(TIMER3,ESC_PRELOAD);
	
  TIMER_Enable( TIMER1, ENABLE );
}
Ejemplo n.º 4
0
void pwm_init(void)
{
	GPIO_InitPara GPIO_InitStructure;


//pin A0 TM2_ch1
	GPIO_InitStructure.GPIO_Pin = GPIO_PIN_1;
	GPIO_InitStructure.GPIO_Mode = GPIO_MODE_AF;
	GPIO_InitStructure.GPIO_Speed = GPIO_SPEED_50MHZ;
	GPIO_InitStructure.GPIO_OType = GPIO_OTYPE_PP;
	GPIO_InitStructure.GPIO_PuPd = GPIO_PUPD_PULLDOWN;
	GPIO_Init(GPIOA, &GPIO_InitStructure);

	GPIO_PinAFConfig(GPIOA, GPIO_PINSOURCE1, GPIO_AF_2);


	TIMER_BaseInitPara TIM_TimeBaseStructure;

	RCC_APB1PeriphClock_Enable(RCC_APB1PERIPH_TIMER2 | 
															RCC_APB1PERIPH_TIMER14 |
																RCC_APB1PERIPH_TIMER3, ENABLE);
	
	RCC_APB2PeriphClock_Enable(RCC_APB2PERIPH_TIMER1, ENABLE);

// timer 2
	TIM_TimeBaseStructure.TIMER_Prescaler = TIMER_PRESCALER - 1;	//
	TIM_TimeBaseStructure.TIMER_CounterMode = TIMER_COUNTER_CENTER_ALIGNED2;
	TIM_TimeBaseStructure.TIMER_Period = PWMTOP;
	TIM_TimeBaseStructure.TIMER_ClockDivision = TIMER_CDIV_DIV1;
// init timer 2
	TIMER_BaseInit(TIMER2, &TIM_TimeBaseStructure);

	TIM_OCInitStructure.TIMER_OCMode = TIMER_OC_MODE_PWM1;
	TIM_OCInitStructure.TIMER_OCPolarity = TIMER_OC_POLARITY_HIGH;
	TIM_OCInitStructure.TIMER_OutputState = TIMER_OUTPUT_STATE_ENABLE;
	TIM_OCInitStructure.TIMER_OCIdleState = TIMER_OC_IDLE_STATE_RESET;

	TIM_OCInitStructure.TIMER_Pulse = 0;

	TIMER_OC2_Init(TIMER2, &TIM_OCInitStructure);

	TIMER_CtrlPWMOutputs(TIMER2, ENABLE);

	TIMER_CARLPreloadConfig(TIMER2, ENABLE);


	TIMER_OC2_Preload(TIMER2, TIMER_OC_PRELOAD_DISABLE);


	// pin A3

	GPIO_InitStructure.GPIO_Pin = GPIO_PIN_3;
	GPIO_Init(GPIOA, &GPIO_InitStructure);

	GPIO_PinAFConfig(GPIOA, GPIO_PINSOURCE3, GPIO_AF_2);

	TIMER_OC4_Init(TIMER2, &TIM_OCInitStructure);


	TIMER_OC4_Preload(TIMER2, TIMER_OC_PRELOAD_DISABLE);

//   TIMER_Enable( TIMER2, ENABLE );

// timer 1 ch3 , ch1 
// pins A10 , A8         
	GPIO_InitStructure.GPIO_Pin = GPIO_PIN_10 | GPIO_PIN_8;

	GPIO_Init(GPIOA, &GPIO_InitStructure);

	GPIO_PinAFConfig(GPIOA, GPIO_PINSOURCE10, GPIO_AF_2);
	GPIO_PinAFConfig(GPIOA, GPIO_PINSOURCE8, GPIO_AF_2);


// timer 1

// init timer 1
	TIMER_BaseInit(TIMER1, &TIM_TimeBaseStructure);

	TIM_OCInitStructure.TIMER_Pulse = 0;

	TIMER_OC3_Init(TIMER1, &TIM_OCInitStructure);

	TIMER_OC1_Init(TIMER1, &TIM_OCInitStructure);

	TIMER_CtrlPWMOutputs(TIMER1, ENABLE);

	TIMER_CARLPreloadConfig(TIMER1, ENABLE);


	TIMER_OC3_Preload(TIMER1, TIMER_OC_PRELOAD_DISABLE);

	TIMER_OC1_Preload(TIMER1, TIMER_OC_PRELOAD_DISABLE);


// bridge dir 2
///////////////

	//pin A9 TM1_ch2
	GPIO_InitStructure.GPIO_Pin = GPIO_PIN_9;

	GPIO_Init(GPIOA, &GPIO_InitStructure);

	GPIO_PinAFConfig(GPIOA, GPIO_PINSOURCE9, GPIO_AF_2);

// timer 1

// init timer 1
	TIMER_BaseInit(TIMER1, &TIM_TimeBaseStructure);

	TIM_OCInitStructure.TIMER_Pulse = 0;

	TIMER_OC2_Init(TIMER2, &TIM_OCInitStructure);

	TIMER_CtrlPWMOutputs(TIMER1, ENABLE);

	TIMER_CARLPreloadConfig(TIMER1, ENABLE);


	TIMER_OC2_Preload(TIMER1, TIMER_OC_PRELOAD_DISABLE);



// timer 3 PB1 af1 ch4

	GPIO_InitStructure.GPIO_Pin = GPIO_PIN_1;

	GPIO_Init(GPIOB, &GPIO_InitStructure);

	GPIO_PinAFConfig(GPIOB, GPIO_PINSOURCE1, GPIO_AF_1);


// timer 3

// init timer 3
	TIMER_BaseInit(TIMER3, &TIM_TimeBaseStructure);

	TIM_OCInitStructure.TIMER_Pulse = 0;

	TIMER_OC4_Init(TIMER3, &TIM_OCInitStructure);

	TIMER_CtrlPWMOutputs(TIMER3, ENABLE);

	TIMER_CARLPreloadConfig(TIMER3, ENABLE);


	TIMER_OC4_Preload(TIMER3, TIMER_OC_PRELOAD_DISABLE);

// A0
// Timer2 ch1

	GPIO_InitStructure.GPIO_Pin = GPIO_PIN_0;

	GPIO_Init(GPIOA, &GPIO_InitStructure);

	GPIO_PinAFConfig(GPIOA, GPIO_PINSOURCE0, GPIO_AF_2);


// timer 2

// init timer 2
	TIMER_BaseInit(TIMER2, &TIM_TimeBaseStructure);

	TIM_OCInitStructure.TIMER_Pulse = 0;

	TIMER_OC1_Init(TIMER2, &TIM_OCInitStructure);

	TIMER_CtrlPWMOutputs(TIMER2, ENABLE);

	TIMER_CARLPreloadConfig(TIMER2, ENABLE);


	TIMER_OC1_Preload(TIMER2, TIMER_OC_PRELOAD_DISABLE);

// PA2 tm2 ch3

	GPIO_InitStructure.GPIO_Pin = GPIO_PIN_2;

	GPIO_Init(GPIOA, &GPIO_InitStructure);

	GPIO_PinAFConfig(GPIOA, GPIO_PINSOURCE2, GPIO_AF_2);


	TIMER_OC3_Init(TIMER2, &TIM_OCInitStructure);

	TIMER_OC3_Preload(TIMER2, TIMER_OC_PRELOAD_DISABLE);



	TIMER_Enable(TIMER3, ENABLE);

	TIMER_Enable(TIMER1, ENABLE);

	TIMER_Enable(TIMER2, ENABLE);


}