Posted on January 24, 2013 at 21:54Hello,
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);
}
