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When does a timer get captured in STM32?
Where the timer gets clocked from an internal source and its current value is captured and saved to the input capture register whenever a special event occurs on the input capture channel pin. Here is a brief description of the capture compare channels in STM32 timers modules.
How does synchronization circuit in STM32 work?
Synchronization circuit to control the timer with external signals and to interconnect several timers together. Repetition counter to update the timer registers only after a given number of cycles of the counter. Break input to put the timer’s output signals in a reset state or in a known state.
What does a prescaler do in a STM32 timer?
It can have a Prescaler to divide the input clock frequency by a selectable value. It can also have circuitry for input capture, PWM signal generation, and much more as we’ll see in this tutorial.
When to update the repetition counter in STM32?
Repetition counter to update the timer registers only after a given number of cycles of the counter. Break input to put the timer’s output signals in a reset state or in a known state. Interrupt/DMA generation on the following events: – Update: counter overflow/underflow, counter initialization (by software or internal/external trigger)
What causes PWM Input capture and reset in slave mode?
TI2FP2 is not even connected to IC1, that would be TI2FP1. So I can understand that these commands configure the reset. But what causes IC1 to capture? It just caught my eye that the PWM_Input example uses TIM_PWMIConfig () instead of TIM_ICInit () as the InputCapture example does.
How does a STM32 capture and compare channel work?
Each Capture/Compare channel is built around a capture/compare register (including a shadow register), an input stage for capture (with a digital filter, multiplexing, and Prescaler) and an output stage (with comparator and output control). The input stage samples the corresponding TIx input to generate a filtered signal TIxF.
How to capture the falling edge in STM32?
The example sets up input capture on Channel 2 but does not explain how IC1 is configured implicitly to capture the falling edge. I am especially interested in these three SPL functions: implemented in stm32f10x_tim.c. They all write to TIMx->SMCR.