Question
howto get tim_16 Frequ. to PB8
Posted on January 24, 2013 at 21:54
Hello,
My problem is that I don't get the Frequency produced by Timer 16 seen on PB8. Somebody can have a look at the code and tell me what's missing or wrong. static void setup_Timer16(void) { TIM_OCInitTypeDef TIM_OCInitStructure; TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; GPIO_InitTypeDef GPIO_InitStructure; // clock on Timer 16 enable RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM16, ENABLE); // GPIOB clocks enable RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE); // GPIOB Configuration: Pin PB8 AF2 connecting to TIM16 Ch1 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8; GPIO_InitStructure.GPIO_Mode = /*GPIO_Mode_OUT*/GPIO_Mode_AF; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; GPIO_Init(GPIOB, &GPIO_InitStructure); // Connect TIM16 pins to AF2 GPIO_PinAFConfig(GPIOB, GPIO_PinSource8, GPIO_AF_2); TIM_DeInit(TIM16 ); TIM_TimeBaseStructInit(&TIM_TimeBaseStructure); /* Time base configuration */ TIM_TimeBaseStructure.TIM_Period = (SystemCoreClock / 50000/*lcd_Contrast*/) - 1; TIM_TimeBaseStructure.TIM_Prescaler = 0x0; TIM_TimeBaseStructure.TIM_ClockDivision = 0x0; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit(TIM16, &TIM_TimeBaseStructure); // Timer output compare configuration TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; TIM_OCInitStructure.TIM_OCMode = /*TIM_OCMode_Timing*/TIM_OCMode_Toggle; TIM_OCInitStructure.TIM_Pulse = 500; TIM_OC1Init(TIM16, &TIM_OCInitStructure); /* NVIC_InitTypeDef nvic; nvic.NVIC_IRQChannel = TIM16_IRQn; nvic.NVIC_IRQChannelCmd = ENABLE; nvic.NVIC_IRQChannelPriority = 3; NVIC_Init(&nvic); TIM_ITConfig(TIM16, TIM_IT_CC1 | TIM_IT_Update, ENABLE); */ /* TIM16 enable counter */ TIM_Cmd(TIM16, ENABLE); }