Posted on July 11, 2014 at 11:17Hello
I'm using the Timer2 as Encoder Position Timer:
void Encoder_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_5;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource1, GPIO_AF_TIM2);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource5, GPIO_AF_TIM2);
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_TimeBaseStructure.TIM_Period = 0xffff;
TIM_TimeBaseStructure.TIM_Prescaler = 0;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
/* Configure the timer */
TIM_EncoderInterfaceConfig(TIM2, TIM_EncoderMode_TI12, TIM_ICPolarity_Rising, TIM_ICPolarity_Falling);
TIM_SetCounter (TIM2, (uint32_t) Encoder_Position_Default); //set the Timer to the default init value (middle)
/* TIM2 counter enable */
TIM_Cmd(TIM2, ENABLE);
TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
}
Timer 4 I use to measure a frequency on a second Encoder.
This is working great.
But in a different seeting I have just 1 Encoder connected to the Timer4 to measure the frequency, works aswell. But I need to get the EncoderPositionMode fro the same Encoder Signals which ones are connected to Timer2. Can I remap the Signals from Timer4 to Timer2 to measure the frequency with Timer4 and the Position with Timer2 without a connected Encoder to the Timer2? Is there an example?
Thanks and Regards, Dominik
