void setStatusLED(Led_status status) { current_led_status = status; switch(status){ case SYSTEM_LED_ALLWAYS_OFF: TIM_Cmd(TIM3, DISABLE); TIM_ForcedOC2Config(TIM3, TIM_ForcedAction_InActive); break; case SYSTEM_LED_ALLWAYS_ON: TIM_Cmd(TIM3, DISABLE); TIM_ForcedOC2Config(TIM3, TIM_ForcedAction_Active); break; case SYSTEM_LED_TWINKLE_EASYLINK: TIM_OC2Init(TIM3, &TIM_OCInitStructure); TIM_SetCounter(TIM3, 0); TIM_Cmd(TIM3, ENABLE); break; case SYSTEM_LED_TWINKLE_WPS: TIM_OC2Init(TIM3, &TIM_OCInitStructure); TIM_SetCounter(TIM3, 0); TIM_Cmd(TIM3, ENABLE); break; default: TIM_Cmd(TIM3, DISABLE); TIM_ForcedOC2Config(TIM3, TIM_ForcedAction_InActive); break; } }
void TIM1_Mode_Init(void) { TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure; TIM_BDTRInitTypeDef TIM_BDTRInitStructure; /*定时器初始化*/ Channel1Pulse = 0;//初始化,没有任何pwm输出 Channel2Pulse = 0; TIM_TimeBaseStructure.TIM_Prescaler = 12; //设置用来作为TIM 时钟频率除数的预分频值 TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //计数器模式 /* 向上计数模式 */ TIM_TimeBaseStructure.TIM_Period = 999; //自动重装载寄存器周期的值 TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //时钟分割 不分频 // TIM_TimeBaseStructure.TIM_RepetitionCounter = 0; //设置 周期 计数值 TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure); TIM_TimeBaseInit(TIM8, &TIM_TimeBaseStructure); /*TIM1 配置*/ TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //脉冲宽度调制模式2 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //使能输出比较状态 TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable; //使能 互补 输出状态 TIM_OCInitStructure.TIM_Pulse = Channel1Pulse; //给1通道填入初始值 TIM_OCInitStructure.TIM_Pulse = Channel2Pulse; //给2通道填入初始值 TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //输出比较极性低 TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;//互补 输出极性低 TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set; //MOE=0 设置 TIM1输出比较空闲状态 TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;//MOE=0 重置 TIM1输出比较空闲状态 // TIM_OCInitStructure.TIM_Pulse = Channel2Pulse; //给2通道填入初始值 TIM_OC1Init(TIM1, &TIM_OCInitStructure);//设定1通道好的参数 初始化TIM TIM_OC1Init(TIM8, &TIM_OCInitStructure);//设定1通道好的参数 初始化TIM TIM_OC2Init(TIM1, &TIM_OCInitStructure);//初始化 TIM_OC2Init(TIM8, &TIM_OCInitStructure);//初始化 /*设置刹车特性 死区时间 锁电平 OSSI OSSR 状态 AOE(自动输出使能)*/ TIM_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable; //设置在运行模式下 非工作状态选项 OSSR TIM_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_Enable; //设置在运行模式下 非工作状态选项 OSSI TIM_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_1; //使用锁电平1 TIM_BDTRInitStructure.TIM_DeadTime = 80; //指定了输出和打开 关闭状态之间的延时 约 400ns TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Enable;//自动输出功能使能 TIM_BDTRConfig(TIM1, &TIM_BDTRInitStructure); //初始化设定好的参数 TIM_BDTRConfig(TIM8, &TIM_BDTRInitStructure); //初始化设定好的参数 /* TIM1 counter enable */ TIM_Cmd(TIM1, ENABLE); TIM_Cmd(TIM8, ENABLE); /* Main Output Enable */ TIM_CtrlPWMOutputs(TIM1, ENABLE); TIM_CtrlPWMOutputs(TIM8, ENABLE); }
void vLedSetDuty(LedState_t state, int32_t duty) { TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure; TIM_Cmd(TIM2, DISABLE); /* Time base configuration */ TIM_TimeBaseStructure.TIM_Period = 400; TIM_TimeBaseStructure.TIM_Prescaler = (uint16_t) (SystemCoreClock / 24000000) - 1; TIM_TimeBaseStructure.TIM_ClockDivision = 0; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); /* PWM1 Mode configuration: Channel1 */ TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = duty<<2; if (TIM_OCInitStructure.TIM_Pulse>TIM_TimeBaseStructure.TIM_Period) TIM_OCInitStructure.TIM_Pulse=TIM_TimeBaseStructure.TIM_Period-1; TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; if (state==LedState_White) { TIM_OC1Init(TIM2, &TIM_OCInitStructure); TIM_OC1PreloadConfig(TIM2, TIM_OCPreload_Enable); TIM_OC2Init(TIM2, &TIM_OCInitStructure); TIM_OC2PreloadConfig(TIM2, TIM_OCPreload_Enable); TIM_OC3Init(TIM2, &TIM_OCInitStructure); TIM_OC3PreloadConfig(TIM2, TIM_OCPreload_Enable); } else if (state==LedState_Green) { TIM_OC1Init(TIM2, &TIM_OCInitStructure); TIM_OC1PreloadConfig(TIM2, TIM_OCPreload_Enable); } else if (state==LedState_Red) { TIM_OC2Init(TIM2, &TIM_OCInitStructure); TIM_OC2PreloadConfig(TIM2, TIM_OCPreload_Enable); } else if (state==LedState_Blue) { TIM_OC3Init(TIM2, &TIM_OCInitStructure); TIM_OC3PreloadConfig(TIM2, TIM_OCPreload_Enable); } TIM_ARRPreloadConfig(TIM2, ENABLE); /* TIM3 enable counter */ TIM_Cmd(TIM2, ENABLE); }
void pwm::setControlRegister(uint8_t registerNum, TIM_TypeDef* timer) { TIM_OCInitTypeDef TIM_OCInitStructure; TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //sets the timer to output pwm signals TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; TIM_OCInitStructure.TIM_Pulse = 0; if(registerNum == 1) { TIM_OC1Init(timer, &TIM_OCInitStructure); TIM_OC1PreloadConfig(timer, TIM_OCPreload_Enable); } else if(registerNum == 2) { TIM_OC2Init(timer, &TIM_OCInitStructure); TIM_OC2PreloadConfig(timer, TIM_OCPreload_Enable); } else if(registerNum == 3) { TIM_OC3Init(timer, &TIM_OCInitStructure); TIM_OC3PreloadConfig(timer, TIM_OCPreload_Enable); } else if(registerNum == 4) { TIM_OC4Init(timer, &TIM_OCInitStructure); TIM_OC4PreloadConfig(timer, TIM_OCPreload_Enable); } }
void TIM9_Configuration(void) { TIM_OCInitTypeDef TIM_OCInitStructure; TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; /* Time base configuration - SystemCoreClock = 168000000 for 168 MHz board */ TIM_TimeBaseStructure.TIM_Prescaler = (uint16_t) (((SystemCoreClock / 1000000)) - 1); // Shooting for 1 MHz, (1us) TIM_TimeBaseStructure.TIM_Period = 20000 - 1; // 1 MHz / 20000 = 50 Hz (20ms) TIM_TimeBaseStructure.TIM_ClockDivision = 0; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit(TIM9, &TIM_TimeBaseStructure); /* Enable TIM4 Preload register on ARR */ TIM_ARRPreloadConfig(TIM9, ENABLE); /* TIM PWM1 Mode configuration: Channel */ TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = 1500; // Servo Top-Center TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; /* Output Compare PWM1 Mode configuration: Channel1 PD.12 */ TIM_OC1Init(TIM9, &TIM_OCInitStructure); TIM_OC1PreloadConfig(TIM9, TIM_OCPreload_Enable); /* Output Compare PWM1 Mode configuration: Channel2 PD.13 */ TIM_OC2Init(TIM9, &TIM_OCInitStructure); TIM_OC2PreloadConfig(TIM9, TIM_OCPreload_Enable); /* TIM Interrupts enable */ TIM_ITConfig(TIM9, TIM_IT_Update, ENABLE); /* TIM4 enable counter */ TIM_Cmd(TIM9, ENABLE); }
void PWM_Config(void) { TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure; // Update_event = TIM_CLK/((PSC + 1)*(ARR + 1)*(RCR + 1)) // 10e3=64e6/(2*3200*1) //10kHz TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1; TIM_TimeBaseStructure.TIM_Prescaler= 1; //32Mz TIM_TimeBaseStructure.TIM_Period=3200-1; //10kHz TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up; TIM_TimeBaseInit(TIM4,&TIM_TimeBaseStructure); TIM_OCInitStructure.TIM_OCMode=TIM_OCMode_PWM1; TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = 0; TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; TIM_OC1Init(TIM4,&TIM_OCInitStructure); TIM_OC2Init(TIM4,&TIM_OCInitStructure); TIM_OC3Init(TIM4,&TIM_OCInitStructure); TIM_OC4Init(TIM4,&TIM_OCInitStructure); TIM_OC1PreloadConfig(TIM4,TIM_OCPreload_Enable); TIM_ARRPreloadConfig(TIM4, ENABLE); TIM_Cmd(TIM4, ENABLE); }
void TIMER2_CH2_PWM_Init(int prescaler,int autoreload){ //USER LED / PB3 / TIM2_CH2 / AF1 RCC_AHBPeriphClockCmd(RCC_AHBENR_GPIOBEN ,ENABLE); GPIO_InitTypeDef myGPIO; GPIO_StructInit(&myGPIO); myGPIO.GPIO_Pin=GPIO_Pin_3; myGPIO.GPIO_Mode=GPIO_Mode_AF; myGPIO.GPIO_Speed=GPIO_Speed_10MHz; GPIO_Init(GPIOB,&myGPIO); GPIO_PinAFConfig(GPIOB,GPIO_PinSource3,GPIO_AF_1); //select the output mode by writing the CCS bits in the CCMRx register //Timer time base configuration RCC_APB1PeriphClockCmd(RCC_APB1ENR_TIM2EN,ENABLE); TIM_TimeBaseInitTypeDef myTimeBase; TIM_TimeBaseStructInit(&myTimeBase); myTimeBase.TIM_CounterMode=TIM_CounterMode_Up; myTimeBase.TIM_Period=autoreload; myTimeBase.TIM_Prescaler=prescaler; myTimeBase.TIM_ClockDivision= TIM_CKD_DIV1; TIM_TimeBaseInit(TIM2,&myTimeBase); //Timer capture compare configuration TIM_OCInitTypeDef myTimerOC; TIM_OCStructInit(&myTimerOC); myTimerOC.TIM_OCMode=TIM_OCMode_PWM1; myTimerOC.TIM_OCPolarity=TIM_OCPolarity_High; myTimerOC.TIM_OutputState=TIM_OutputState_Enable; myTimerOC.TIM_Pulse=autoreload;//0 Duty cycle at start TIM_OC2Init(TIM2,&myTimerOC); TIM_CCxCmd(TIM2,TIM_Channel_2,TIM_CCx_Enable);//enable CCP2 //start Timer TIM_Cmd(TIM2,ENABLE);//Counter enabled }
void RGBLED_Update(uint8_t RED_Val, uint8_t GREEN_Val, uint8_t BLUE_Val) { //printf("r: %x g: %x b:%x\n", RED_Val, GREEN_Val, BLUE_Val); TIM_OCInitTypeDef TIM_OCInitStructure; TIM_OCStructInit(&TIM_OCInitStructure); /* PWM1 Mode configuration: Channel1 */ TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = GREEN_Val; TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; TIM_OC1Init(TIM3, &TIM_OCInitStructure); TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Enable); /* PWM1 Mode configuration: Channel2 */ TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = BLUE_Val; TIM_OC2Init(TIM3, &TIM_OCInitStructure); TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable); /* PWM1 Mode configuration: Channel3 */ TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = RED_Val; TIM_OC3Init(TIM3, &TIM_OCInitStructure); TIM_OC3PreloadConfig(TIM3, TIM_OCPreload_Enable); }
/**TIM2选用没有重影像方式**/ void TIM2_Configuration(void)//TIMER INITIALIZATION { TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure; // GPIO_PinRemapConfig(_,_);//没有重映像 // TIM_ClearITPendingBit(TIM2, TIM_IT_Update); TIM_TimeBaseStructure.TIM_Period = 100-1; TIM_TimeBaseStructure.TIM_Prescaler =36-1; TIM_TimeBaseStructure.TIM_ClockDivision = 0; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); // TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE);//定时器中断 //PWM初始化 TIM_OCInitStructure.TIM_OCMode=TIM_OCMode_PWM1; TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable; TIM_OCInitStructure.TIM_OCPolarity=TIM_OCPolarity_High; TIM_OC1Init(TIM2,&TIM_OCInitStructure); TIM_OC1PreloadConfig(TIM2,TIM_OCPreload_Enable);//使能预装载寄存器 TIM_OC2Init(TIM2,&TIM_OCInitStructure); TIM_OC2PreloadConfig(TIM2,TIM_OCPreload_Enable);//使能预装载寄存器 TIM_OC3Init(TIM2,&TIM_OCInitStructure); TIM_OC3PreloadConfig(TIM2,TIM_OCPreload_Enable);//使能预装载寄存器 TIM_OC4Init(TIM2,&TIM_OCInitStructure); TIM_OC4PreloadConfig(TIM2,TIM_OCPreload_Enable);//使能预装载寄存器 TIM_Cmd(TIM2,ENABLE); }
void TIM3_PWM_Init( void ) { GPIO_InitTypeDef GPIO_InitStructure; TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure; RCC_APB1PeriphClockCmd( RCC_APB1Periph_TIM3, ENABLE ); RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB, ENABLE ); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init( GPIOA, &GPIO_InitStructure ); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1; GPIO_Init( GPIOB, &GPIO_InitStructure ); /* ------------------------------------------------------------ * TIM3 Configuration: generate 4 PWM signals with 4 different duty cycles: * TIM3CLK = 72 MHz, Prescaler = 0x0, TIM3 counter clock = 72 MHz * TIM3 ARR Register = 999 => TIM3 Frequency = TIM3 counter clock/(ARR + 1) * TIM3 Frequency = 72 KHz. * TIM3 Channel1 duty cycle = (TIM3_CCR1/ TIM3_ARR)* 100 = 50% * TIM3 Channel2 duty cycle = (TIM3_CCR2/ TIM3_ARR)* 100 = 37.5% * TIM3 Channel3 duty cycle = (TIM3_CCR3/ TIM3_ARR)* 100 = 25% * TIM3 Channel4 duty cycle = (TIM3_CCR4/ TIM3_ARR)* 100 = 12.5% * ------------------------------------------------------------- */ /* Time base configuration */ TIM_TimeBaseStructure.TIM_Period = PWM_ARR; TIM_TimeBaseStructure.TIM_Prescaler = 0; TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit( TIM3, &TIM_TimeBaseStructure ); TIM_ARRPreloadConfig( TIM3, ENABLE ); TIM_Cmd( TIM3, ENABLE ); TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = 0; TIM_OC1Init( TIM3, &TIM_OCInitStructure ); TIM_OC1PreloadConfig( TIM3, TIM_OCPreload_Enable ); TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = 0; TIM_OC2Init( TIM3, &TIM_OCInitStructure ); TIM_OC2PreloadConfig( TIM3, TIM_OCPreload_Enable ); TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = 0; TIM_OC3Init( TIM3, &TIM_OCInitStructure ); TIM_OC3PreloadConfig( TIM3, TIM_OCPreload_Enable ); TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = 0; TIM_OC4Init( TIM3, &TIM_OCInitStructure ); TIM_OC4PreloadConfig( TIM3, TIM_OCPreload_Enable ); }
/** * @brief Configure the TIM4 parameters */ void PWM_TIM(void){ /* Compute the prescaler value */ //SystemCoreClock max value is 72MHz for TIM4 PrescalerValue_t = 72-1; Period = 20000-1; /* Time base configuration for TIM4 */ TIM_TimeBaseStructure.TIM_Period = Period; TIM_TimeBaseStructure.TIM_Prescaler = PrescalerValue_t; TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure); TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //Set the ouput compare structure mode to PWM1 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = 1500; TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; /* PWM1 Mode configuration: Channels 1 and 2 */ TIM_OC1Init(TIM4, &TIM_OCInitStructure); TIM_OC2Init(TIM4, &TIM_OCInitStructure); /* TIM4 enable counter */ TIM_Cmd(TIM4, ENABLE); TIM_CtrlPWMOutputs(TIM4, ENABLE); TIM_ITConfig(TIM4, TIM_IT_Update, ENABLE); }
void Rilma_t::Init() { // ==== GPIO ==== RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE); // ==== Timer4 as PWM ==== RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE); TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_TimeBaseStructure.TIM_Period = 255; TIM_TimeBaseStructure.TIM_Prescaler = 0; TIM_TimeBaseStructure.TIM_ClockDivision = 0; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure); // ==== PWM outputs ==== TIM_OCInitTypeDef TIM_OCInitStructure; TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = 0; TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low; // Init channels #ifdef CHANNEL1_ENABLE TIM_OC1Init(TIM4, &TIM_OCInitStructure); TIM_OC1PreloadConfig(TIM4, TIM_OCPreload_Enable); #endif #ifdef CHANNEL2_ENABLE TIM_OC2Init(TIM4, &TIM_OCInitStructure); TIM_OC2PreloadConfig(TIM4, TIM_OCPreload_Enable); #endif #ifdef CHANNEL3_ENABLE TIM_OC3Init(TIM4, &TIM_OCInitStructure); TIM_OC3PreloadConfig(TIM4, TIM_OCPreload_Enable); TIM_OC4Init(TIM4, &TIM_OCInitStructure); TIM_OC4PreloadConfig(TIM4, TIM_OCPreload_Enable); #endif TIM_ARRPreloadConfig(TIM4, ENABLE); // Enable autoreload of preload }
static void configBeeperPWMTimer(const beeperDevConfig_t *config) { TIM_OCInitTypeDef TIM_OCInitStructure; TIM_OCStructInit(&TIM_OCInitStructure); TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = (1000000 / BEEPER_PWM_FREQUENCY) * 50 / 100; // 50% duty cycle TIM_OCInitStructure.TIM_OCPolarity = config->isInverted ? TIM_OCPolarity_High : TIM_OCPolarity_Low; TIM_OCInitStructure.TIM_OCIdleState = config->isInverted ? TIM_OCIdleState_Reset : TIM_OCIdleState_Set; configTimeBase(BEEPER_PWM_TIMER, 1000000 / BEEPER_PWM_FREQUENCY, PWM_TIMER_MHZ); TIM_Cmd(BEEPER_PWM_TIMER, ENABLE); switch (BEEPER_PWM_TIMER_CH) { case TIM_Channel_1: TIM_OC1Init(BEEPER_PWM_TIMER, &TIM_OCInitStructure); TIM_OC1PreloadConfig(BEEPER_PWM_TIMER, TIM_OCPreload_Enable); break; case TIM_Channel_2: TIM_OC2Init(BEEPER_PWM_TIMER, &TIM_OCInitStructure); TIM_OC2PreloadConfig(BEEPER_PWM_TIMER, TIM_OCPreload_Enable); break; case TIM_Channel_3: TIM_OC3Init(BEEPER_PWM_TIMER, &TIM_OCInitStructure); TIM_OC3PreloadConfig(BEEPER_PWM_TIMER, TIM_OCPreload_Enable); break; case TIM_Channel_4: TIM_OC4Init(BEEPER_PWM_TIMER, &TIM_OCInitStructure); TIM_OC4PreloadConfig(BEEPER_PWM_TIMER, TIM_OCPreload_Enable); break; } TIM_CtrlPWMOutputs(BEEPER_PWM_TIMER, DISABLE); }
void PWM_Config(void) { /* Configure PWM mode for TIM4 Channels 1->4*/ TIM_OCInitTypeDef TIM_OCInitStructure; /* PWM Mode configuration: Channel1 */ TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = 0; TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; TIM_OC1Init(TIM4, &TIM_OCInitStructure); TIM_OC1PreloadConfig(TIM4, TIM_OCPreload_Enable); TIM_ARRPreloadConfig(TIM4, ENABLE); //3 other channels TIM_OC2Init(TIM4, &TIM_OCInitStructure); TIM_OC2PreloadConfig(TIM4, TIM_OCPreload_Enable); TIM_OC3Init(TIM4, &TIM_OCInitStructure); TIM_OC3PreloadConfig(TIM4, TIM_OCPreload_Enable); TIM_OC4Init(TIM4, &TIM_OCInitStructure); TIM_OC4PreloadConfig(TIM4, TIM_OCPreload_Enable); /* TIM4 enable counter */ TIM_Cmd(TIM4, ENABLE); }
static void Holder_PWM_Init() { TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure; RCC_APB1PeriphClockCmd(RCC_APB_HOLDER_TIM, ENABLE); /* time base --> all pwm's period and prescaler */ TIM_TimeBaseStructure.TIM_Period = HOLDER_PERIOD; TIM_TimeBaseStructure.TIM_Prescaler = HOLDER_PRESCALER - 1; TIM_TimeBaseStructure.TIM_ClockDivision = 0; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Down; TIM_TimeBaseStructure.TIM_RepetitionCounter = 0; TIM_TimeBaseInit(HOLDER_TIM, &TIM_TimeBaseStructure); TIM_ARRPreloadConfig(HOLDER_TIM,ENABLE); /* output channel --> every pwm's pulse */ TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; /* channel 1 --> holder vertical */ TIM_OCInitStructure.TIM_Pulse = HOLDER_V_PULSE_INIT; TIM_OC1Init(HOLDER_TIM, &TIM_OCInitStructure); TIM_OC1PolarityConfig(HOLDER_TIM, TIM_OCPreload_Enable); /* channel 2 --> holder horizontal */ TIM_OCInitStructure.TIM_Pulse = HOLDER_H_PULSE_INIT; TIM_OC2Init(HOLDER_TIM, &TIM_OCInitStructure); TIM_OC2PolarityConfig(HOLDER_TIM, TIM_OCPreload_Enable); /* enable holder's pwm module */ TIM_Cmd(HOLDER_TIM, ENABLE); }
void initPWM() { TIM_OCInitTypeDef TIM_OCInitStructure; TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = 0; TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; /* PWM1 Mode configuration: Channel1 (GPIOD Pin 12)*/ TIM_OC1Init(TIM4, &TIM_OCInitStructure); TIM_OC1PreloadConfig(TIM4, TIM_OCPreload_Enable); /* PWM1 Mode configuration: Channel2 (GPIOD Pin 13)*/ TIM_OC2Init(TIM4, &TIM_OCInitStructure); TIM_OC2PreloadConfig(TIM4, TIM_OCPreload_Enable); /* PWM1 Mode configuration: Channel3 (GPIOD Pin 14)*/ TIM_OC3Init(TIM4, &TIM_OCInitStructure); TIM_OC3PreloadConfig(TIM4, TIM_OCPreload_Enable); /* PWM1 Mode configuration: Channel4 (GPIOD Pin 15)*/ TIM_OC4Init(TIM4, &TIM_OCInitStructure); TIM_OC4PreloadConfig(TIM4, TIM_OCPreload_Enable); TIM_Cmd(TIM4, ENABLE); }
/**************************************************************************************** ** 函数名称: LEDInit ** 功能描述: LED 指示灯管脚初始化函数 ** 参 数: none ** 返 回 值: none ** 作 者: Sevent ** 日 期: 2013年08月13日 **--------------------------------------------------------------------------------------- ** 修 改 人: ** 日 期: **-------------------------------------------------------------------------------------- ****************************************************************************************/ void LEDInit(void) { GPIO_InitTypeDef GPIO_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; uint16_t PrescalerValue; RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE); RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE); RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); PrescalerValue = (uint16_t) (SystemCoreClock /2/10000) - 1; /* 配置PB7 为指示的LED */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; GPIO_Init(GPIOB, &GPIO_InitStructure); /* 配置PC7 为指示的LED, 由TIMER8驱动 */ GPIO_PinAFConfig(GPIOC, GPIO_PinSource7, GPIO_AF_TIM3); /* Configure green led as output */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOC, &GPIO_InitStructure); /* Enable the TIM8 global Interrupt */ NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); PrescalerValue = (uint16_t) (SystemCoreClock /2/10000) - 1; /* Time base configuration */ TIM_DeInit(TIM3); TIM_TimeBaseStructure.TIM_Period = 65535; TIM_TimeBaseStructure.TIM_Prescaler = PrescalerValue; TIM_TimeBaseStructure.TIM_ClockDivision = 0; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); /* Output Compare Toggle Mode configuration: Channel2 */ TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Toggle; TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = 100; TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; TIM_OC2Init(TIM3, &TIM_OCInitStructure); /* TIM enable counter */ //TIM_Cmd(TIM3, ENABLE); /* TIM IT enable */ TIM_ITConfig(TIM3, TIM_IT_CC2, ENABLE); }
void modbus_rtu_driver__delay_timer__init(void) { TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure; TIM_TimeBaseStructure.TIM_Period = 65535; TIM_TimeBaseStructure.TIM_Prescaler = MODBUS_RTU_DRIVER__DELAY_TIMER__PRESCALER; TIM_TimeBaseStructure.TIM_ClockDivision = 0; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Inactive; TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = MODBUS_RTU_DRIVER__DELAY_TIMER__T15_VALUE; TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; TIM_OC1Init(TIM2, &TIM_OCInitStructure); TIM_OC1PreloadConfig(TIM2, TIM_OCPreload_Disable); TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Inactive; TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = MODBUS_RTU_DRIVER__DELAY_TIMER__T35_VALUE; TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; TIM_OC2Init(TIM2, &TIM_OCInitStructure); TIM_OC2PreloadConfig(TIM2, TIM_OCPreload_Disable); TIM_ARRPreloadConfig(TIM2, ENABLE); /* TIM IT enable */ TIM_ITConfig(TIM2, TIM_IT_CC1 | TIM_IT_CC2, ENABLE); /* TIM2 enable counter */ TIM_Cmd(TIM2, ENABLE); }
/** * @brief Initialize the timer channel linked to the servo in PWM mode. * @param servo: pointer to a ausbeeServo structure that contains the * configuration information for the specified servo. * @retval None */ void ausbeeInitServo(ausbeeServo* servo) { TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_TimeBaseStructure.TIM_Period = 1999; TIM_TimeBaseStructure.TIM_Prescaler = 812; #ifdef SLOW_MCU TIM_TimeBaseStructure.TIM_Prescaler /= 5; #endif TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit(servo->TIMx, &TIM_TimeBaseStructure); TIM_OCInitTypeDef OCInit_PWM; // Create a OCInitTypeDef for PWM TIM_OCStructInit(&OCInit_PWM); OCInit_PWM.TIM_OCMode = TIM_OCMode_PWM1; // Set PWM Mode OCInit_PWM.TIM_Pulse = 1500; // Duty cycle to 5% OCInit_PWM.TIM_OutputState = TIM_OutputState_Enable; if(servo->CHANx == TIM_Channel_1) TIM_OC1Init(servo->TIMx, &OCInit_PWM); // Initialize OSC1 else if(servo->CHANx == TIM_Channel_2) TIM_OC2Init(servo->TIMx, &OCInit_PWM); // Initialize OSC2 else if(servo->CHANx == TIM_Channel_3) TIM_OC3Init(servo->TIMx, &OCInit_PWM); // Initialize OSC3 else if(servo->CHANx == TIM_Channel_4) TIM_OC4Init(servo->TIMx, &OCInit_PWM); // Initialize OSC4 }
void TIM4_PWM_Init(u16 arr, u16 psc) { GPIO_InitTypeDef GPIO_InitStructure; static TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; static TIM_OCInitTypeDef TIM_OCInitStructure; RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE); //使能定时器3时钟 RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB|RCC_AHB1Periph_GPIOD, ENABLE); //使能GPIO外设和AFIO复用功能模块时钟 GPIO_PinAFConfig(GPIOB,GPIO_PinSource8,GPIO_AF_TIM4); //GPIOA0复用为定时器2 GPIO_PinAFConfig(GPIOB,GPIO_PinSource9,GPIO_AF_TIM4); //GPIOA0复用为定时器2 GPIO_PinAFConfig(GPIOD,GPIO_PinSource12,GPIO_AF_TIM4); //GPIOA0复用为定时器2 GPIO_PinAFConfig(GPIOD,GPIO_PinSource13,GPIO_AF_TIM4); //GPIOA0复用为定时器2 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_9; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推挽复用输出 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //上拉 GPIO_Init(GPIOB, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12|GPIO_Pin_13; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推挽复用输出 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //上拉 GPIO_Init(GPIOD, &GPIO_InitStructure); //初始化TIM4 TIM_TimeBaseStructure.TIM_Period = arr - 1; //设置在下一个更新事件装入活动的自动重装载寄存器周期的值 TIM_TimeBaseStructure.TIM_Prescaler = psc - 1; //设置用来作为TIMx时钟频率除数的预分频值 TIM_TimeBaseStructure.TIM_ClockDivision = 0x00;//设置时钟分割:TDTS = Tck_tim TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //TIM向上计数模式 TIM_TimeBaseStructure.TIM_RepetitionCounter = 0x0; //循环计数次数值 TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位 //初始化TIM4 PWM模式 TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2; //选择定时器模式 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //比较输出使能 TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;//使能定时器互补输出 TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low; //输出极性 TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set; //打开空闲状态选择关闭 TIM_CtrlPWMOutputs(TIM4, ENABLE); //使能定时器8的PWM输出 TIM_OC1Init(TIM4, &TIM_OCInitStructure); TIM_OC1PreloadConfig(TIM4, TIM_OCPreload_Enable); TIM_OC2Init(TIM4, &TIM_OCInitStructure); TIM_OC2PreloadConfig(TIM4, TIM_OCPreload_Enable); TIM_OC3Init(TIM4, &TIM_OCInitStructure); TIM_OC3PreloadConfig(TIM4, TIM_OCPreload_Enable); TIM_OC4Init(TIM4, &TIM_OCInitStructure); TIM_OC4PreloadConfig(TIM4, TIM_OCPreload_Enable); TIM_Cmd(TIM4, ENABLE); //使能TIM4 }
void SA_TIMER_PWM_Init(TIM_TypeDef* TIMx, uint8_t NUM) { TIM_OCInitTypeDef TIM_OCInitStructure; TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2; //选择定时器模式:TIM脉冲宽度调制模式2 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //比较输出使能 TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low; //输出极性:TIM输出比较极性高 //TIM_OCPolarity_High if (1 == NUM) { TIM_OC1Init(TIMx, &TIM_OCInitStructure); TIM_OC1PreloadConfig(TIMx, TIM_OCPreload_Enable); } else if(2 == NUM) { TIM_OC2Init(TIMx, &TIM_OCInitStructure); //根据T指定的参数初始化外设TIM3 OC2 TIM_OC2PreloadConfig(TIMx, TIM_OCPreload_Enable); //使能TIMx在CCR2上的预装载寄存器 } else if(3 == NUM) { TIM_OC3Init(TIMx, &TIM_OCInitStructure); //根据T指定的参数初始化外设TIM3 OC2 TIM_OC3PreloadConfig(TIMx, TIM_OCPreload_Enable); //使能TIMx在CCR2上的预装载寄存器 } else { if (4 == NUM) { TIM_OC4Init(TIMx, &TIM_OCInitStructure); //根据T指定的参数初始化外设TIM3 OC2 TIM_OC4PreloadConfig(TIMx, TIM_OCPreload_Enable); //使能TIMx在CCR2上的预装载寄存器 } } }
void pwm_out_mode_config() { TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure; TIM_TimeBaseStructure.TIM_Period = TIM_PERIOD; TIM_TimeBaseStructure.TIM_Prescaler = TIM_PRESCALER; TIM_TimeBaseStructure.TIM_ClockDivision = 0; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure); TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = TIM_PULSE; TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //output Channel1 TIM_OC1Init(TIM4, &TIM_OCInitStructure); TIM_OC1PreloadConfig(TIM4, TIM_OCPreload_Enable); //output Channel2 TIM_OC2Init(TIM4, &TIM_OCInitStructure); TIM_OC2PreloadConfig(TIM4, TIM_OCPreload_Enable); //output Channel3 TIM_OC3Init(TIM4, &TIM_OCInitStructure); TIM_OC3PreloadConfig(TIM4, TIM_OCPreload_Enable); //output Channel4 TIM_OC4Init(TIM4, &TIM_OCInitStructure); TIM_OC4PreloadConfig(TIM4, TIM_OCPreload_Enable); //enable TIM4 TIM_ARRPreloadConfig(TIM4, ENABLE); TIM_Cmd(TIM4, ENABLE); }
/** * @brief Main program * @param None * @retval None */ void Timer3Init(void) { RCC_Configuration(); GPIO_Configuration(); /* Compute the prescaler value */ PrescalerValue = (uint16_t) (SystemCoreClock / 1000000) - 1; /* Time base configuration */ TIM_TimeBaseStructure.TIM_Period = 1000; TIM_TimeBaseStructure.TIM_Prescaler = PrescalerValue; TIM_TimeBaseStructure.TIM_ClockDivision = 0; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); /* PWM1 Mode configuration: Channel1 */ TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = 0; TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; TIM_OC1Init(TIM3, &TIM_OCInitStructure); TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Enable); /* PWM1 Mode configuration: Channel2 */ TIM_OC2Init(TIM3, &TIM_OCInitStructure); TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable); TIM_ARRPreloadConfig(TIM3, ENABLE); /* TIM3 enable counter */ TIM_Cmd(TIM3, ENABLE); }
void motor_pwm_init(int period) { RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM12, ENABLE); TIM_TimeBaseInitTypeDef timerInitStructure; timerInitStructure.TIM_Prescaler = 2; timerInitStructure.TIM_CounterMode = TIM_CounterMode_Up; timerInitStructure.TIM_Period = period; timerInitStructure.TIM_ClockDivision = TIM_CKD_DIV1; timerInitStructure.TIM_RepetitionCounter = 0; TIM_TimeBaseInit(TIM12, &timerInitStructure); TIM_Cmd(TIM12, ENABLE); TIM_OCInitTypeDef outputChannelInit = {0,}; outputChannelInit.TIM_OCMode = TIM_OCMode_PWM1; outputChannelInit.TIM_Pulse = 500; outputChannelInit.TIM_OutputState = TIM_OutputState_Enable; outputChannelInit.TIM_OCPolarity = TIM_OCPolarity_High; TIM_OC1Init(TIM12, &outputChannelInit); TIM_OC1PreloadConfig(TIM12, TIM_OCPreload_Enable); outputChannelInit.TIM_OCMode = TIM_OCMode_PWM1; outputChannelInit.TIM_Pulse = 500; outputChannelInit.TIM_OutputState = TIM_OutputState_Enable; outputChannelInit.TIM_OCPolarity = TIM_OCPolarity_High; TIM_OC2Init(TIM12, &outputChannelInit); TIM_OC2PreloadConfig(TIM12, TIM_OCPreload_Enable); GPIO_PinAFConfig(MTR_L_PWM_GPIO_PORT, MTR_L_PWM_SOURCE, MTR_L_PWM_AF); GPIO_PinAFConfig(MTR_R_PWM_GPIO_PORT, MTR_R_PWM_SOURCE, MTR_R_PWM_AF); }
void Initialise_TimerPWM() { /*!----------------------------- Initialise Base Structures -----------------------------!*/ TIM_TimeBaseInitTypeDef TIM4_INIT; TIM_OCInitTypeDef TIM4_OC; TIM4_INIT.TIM_Prescaler = 25; TIM4_INIT.TIM_ClockDivision = TIM_CKD_DIV1; TIM4_INIT.TIM_CounterMode = TIM_CounterMode_Up; TIM4_INIT.TIM_Period = 255; //8 bit equivalent TIM_TimeBaseInit(TIM4,&TIM4_INIT); /*!----------------------------- Initialise Base Structures -----------------------------!*/ /*!----------------------------- OC Mode -----------------------------!*/ TIM4_OC.TIM_OCMode = TIM_OCMode_PWM1; TIM4_OC.TIM_OCPolarity = TIM_OCPolarity_High; TIM4_OC.TIM_OutputState = TIM_OutputState_Enable ; TIM_OC1Init(TIM4,&TIM4_OC); TIM_OC2Init(TIM4,&TIM4_OC); TIM_OC3Init(TIM4,&TIM4_OC); TIM_OC4Init(TIM4,&TIM4_OC); /*!----------------------------- OC Mode -----------------------------!*/ /*!----------------------------- Enable Timer -----------------------------!*/ TIM_Cmd(TIM4, ENABLE); /*!----------------------------- Enable Timer -----------------------------!*/ }
void pwm_config(uint32_t freq) { TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM9, ENABLE); gpio_af_pp_up_init(GPIOE, GPIO_Pin_5|GPIO_Pin_6); GPIO_PinAFConfig(GPIOE, GPIO_PinSource5, GPIO_AF_TIM9); GPIO_PinAFConfig(GPIOE, GPIO_PinSource6, GPIO_AF_TIM9); TIM_TimeBaseStructure.TIM_Period = 1000-1; TIM_TimeBaseStructure.TIM_Prescaler = 84000000/1000/freq-1; TIM_TimeBaseStructure.TIM_ClockDivision = 0; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit(TIM9, &TIM_TimeBaseStructure); TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; TIM_OCInitStructure.TIM_Pulse = 0; TIM_OC1Init(TIM9, &TIM_OCInitStructure); TIM_OCInitStructure.TIM_Pulse = 0; TIM_OC2Init(TIM9, &TIM_OCInitStructure); TIM_OC1PreloadConfig(TIM9, TIM_OCPreload_Enable); TIM_OC2PreloadConfig(TIM9, TIM_OCPreload_Enable); TIM_ARRPreloadConfig(TIM9, ENABLE); TIM_Cmd(TIM9, ENABLE); }
/** * @param pos Servo position. * 0 = Middle * -127 = Max left * +127 = max right */ void servo_set(int num, int8_t pos) { int wpulse; uint16_t pulse; TIM_OCInitTypeDef oc_init; oc_init = TIM_OC_CONFIG; wpulse = ((int)pos)*500/127 +PULSE_1_5_MS; pulse = MIN(PULSE_2_0_MS,wpulse); pulse = MAX(PULSE_1_0_MS,wpulse); oc_init.TIM_Pulse = pulse; switch( num ) { case 2: TIM_OC2Init(TIMER, &oc_init); break; case 1: TIM_OC3Init(TIMER, &oc_init); break; case 0: TIM_OC4Init(TIMER, &oc_init); break; default: assert_param(0); } }
/** * @brief configure the TIM4 for PWM mode * @param None * @retval None */ void TIM_Configuration(void) { TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStruct; TIM_OCInitTypeDef TIM_OCInitStruct; // Let PWM frequency equal 100Hz. // Let period equal 1000. Therefore, timer runs from zero to 1000. Gives 0.1Hz resolution. // Solving for prescaler gives 240. TIM_TimeBaseStructInit( &TIM_TimeBaseInitStruct ); TIM_TimeBaseInitStruct.TIM_ClockDivision = TIM_CKD_DIV4; TIM_TimeBaseInitStruct.TIM_Period = 1000 - 1; TIM_TimeBaseInitStruct.TIM_Prescaler = 72 - 1; TIM_TimeBaseInitStruct.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit( TIM3, &TIM_TimeBaseInitStruct ); TIM_OCStructInit( &TIM_OCInitStruct ); TIM_OCInitStruct.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStruct.TIM_OCMode = TIM_OCMode_PWM1; // Initial duty cycle equals 0%. Value can range from zero to 65535. //TIM_Pulse = TIM4_CCR1 register (16 bits) TIM_OCInitStruct.TIM_Pulse = 100 - 1; //(0=Always Off, 65535=Always On) TIM_OC1Init( TIM3, &TIM_OCInitStruct ); // Channel 1 LED TIM_OC2Init( TIM3, &TIM_OCInitStruct ); // Channel 2 LED TIM_OC3Init( TIM3, &TIM_OCInitStruct ); // Channel 3 LED TIM_OC4Init( TIM3, &TIM_OCInitStruct ); // Channel 4 LED TIM_Cmd( TIM3, ENABLE ); }
static void pwmOCConfig(TIM_TypeDef *tim, uint8_t channel, uint16_t value) { TIM_OCInitTypeDef TIM_OCInitStructure; TIM_OCStructInit(&TIM_OCInitStructure); TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2; TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Disable; TIM_OCInitStructure.TIM_Pulse = value; TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low; TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set; switch (channel) { case TIM_Channel_1: TIM_OC1Init(tim, &TIM_OCInitStructure); TIM_OC1PreloadConfig(tim, TIM_OCPreload_Enable); break; case TIM_Channel_2: TIM_OC2Init(tim, &TIM_OCInitStructure); TIM_OC2PreloadConfig(tim, TIM_OCPreload_Enable); break; case TIM_Channel_3: TIM_OC3Init(tim, &TIM_OCInitStructure); TIM_OC3PreloadConfig(tim, TIM_OCPreload_Enable); break; case TIM_Channel_4: TIM_OC4Init(tim, &TIM_OCInitStructure); TIM_OC4PreloadConfig(tim, TIM_OCPreload_Enable); break; } }
void pwmOCInit(const TIM_TypeDef *tim, uint16_t channel, uint32_t inititalValue) { TIM_OCInitTypeDef TIM_OCInitStructure; TIM_OCStructInit(&TIM_OCInitStructure); TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Disable; TIM_OCInitStructure.TIM_Pulse = inititalValue; switch (channel) { case TIM_Channel_1: TIM_OC1Init((TIM_TypeDef *)tim, &TIM_OCInitStructure); break; case TIM_Channel_2: TIM_OC2Init((TIM_TypeDef *)tim, &TIM_OCInitStructure); break; case TIM_Channel_3: TIM_OC3Init((TIM_TypeDef *)tim, &TIM_OCInitStructure); break; case TIM_Channel_4: TIM_OC4Init((TIM_TypeDef *)tim, &TIM_OCInitStructure); break; } }