Figure 15. Frequency Measurement With Tim16 In Capture Mode; Figure 16. Frequency Measurement With Tim17 In Capture Mode - ST STM32L4x6 Reference Manual

RM0351
The input capture channel of the Timer 15 can be a GPIO line or an internal clock of the
MCU. This selection is performed through the TI1_RMP bit in the TIM15_OR register. The
possibilities are the following ones:
•
TIM15 Channel1 is connected to the GPIO. Refer to the alternate function mapping in
the device datasheets.
•
TIM15 Channel1 is connected to the LSE.
The input capture channel of the Timer 16 can be a GPIO line or an internal clock of the
MCU. This selection is performed through the TI1_RMP[1:0] bits in the TIM16_OR register.
The possibilities are the following ones:
•
TIM16 Channel1 is connected to the GPIO. Refer to the alternate function mapping in
the device datasheets.
•
TIM16 Channel1 is connected to the LSI clock.
•
TIM16 Channel1 is connected to the LSE clock.
•
TIM16 Channel1 is connected to the RTC wakeup interrupt signal. In this case the RTC
interrupt should be enabled.

Figure 15. Frequency measurement with TIM16 in capture mode

Figure 16. Frequency measurement with TIM17 in capture mode

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