measure speed motor using Timer1 on stm32f030
Hello every one.
I’m using stm32f030 for a cheap project. I want it to measure motor speed by means of using a Hall effect rotary encoder and a comparator. the encoder makes fully digital pulses when motor rotates.
STM32f030 doesn’t have an ETR pin for external trigger and I have to use TI2FP2 pin to trigger TIMER 1.
so:
1- Should I set input trigger filter to value 0 or 15 to achieve maximum detectable frequency?
2-I should set TIM1 to input capture mode or time base mode?which HAL functions should I use to detect TIMER1 overflow?
3-what is the maximum detectable freq?
4- is this kind of frequency meter ideal for other usages like measuring LC meter?
5-what does the word “Trigger” mean in ARM timers? It is triggering timer main clock to count it up? or trigger is a clock itself?
thanks so much.
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