6/21/2023 0 Comments Qt sync timer to second clock![]() ![]() The input filter and prescaler are configurable. The input conditioning is made of an external signal synchronization stage then a prescaling and filtering stage. The clock signal fed into the TI1 or TI2 timer peripheral inputs is first conditioned before reaching the timer counter. If the timer does already embed four channels, the TI3 and TI4 inputs cannot clock the timer in this mode. Only TI1 and TI2 inputs can be used to feed a clock signal into the timer counter when the external clock mode 1 is activated. ![]() Timer inputs, TI1 and TI2 as clock source The corresponding reference manual contains the right configuration to activate this clocking alternative. Using the ETR input for feeding the timer is an alternative configuration for the external clock-source mode 2, so it is not detailed further within this section. This section deals only with the external clock mode 1 when an external source clock is fed into the timer through one of its inputs, in other words when a clock is fed into the timer through the ETR, TI1 or TI2 timer inputs. The TI1FP1 (TI1FP1:Timer Input 1 Filtered Priority channel 1)and TI2FP2 input signals that are the synchronized, filtered then the TI1 and TI2 prescaled timer inputs, respectively.(本节详细解释).The TI1FD signal which is the output of timer channel1 but which sensitive to both signal edges (each transition of the timer input 1 generates a pulse).The inter-timer peripherals synchronization signals (ITR inputs)内部定时器同步. ![]()
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