Debug Mode; Figure 96. Control Circuit In External Clock Mode 2 + Trigger Mode - ST STM32F410 Reference Manual

Advanced-control timers (TIM1)
2. Configure the channel 1 as follows, to detect rising edges on TI:
–
–
–
–
3. Configure the timer in trigger mode by writing SMS=110 in TIMx_SMCR register. Select
TI1 as the input source by writing TS=101 in TIMx_SMCR register.
A rising edge on TI1 enables the counter and sets the TIF flag. The counter then counts on
ETR rising edges.
The delay between the rising edge of the ETR signal and the actual reset of the counter is
due to the resynchronization circuit on ETRP input.
14.3.20

Debug mode

When the microcontroller enters debug mode (Cortex
counter either continues to work normally or stops, depending on DBG_TIMx_STOP
configuration bit in DBGMCU module. For more details, refer to
support for timers, watchdog, and
312/771
IC1F=0000: no filter.
The capture prescaler is not used for triggering and does not need to be
configured.
CC1S=01 in TIMx_CCMR1 register to select only the input capture source
CC1P=0 and CC1NP='0' in TIMx_CCER register to validate the polarity (and
detect rising edge only).

Figure 96. Control circuit in external clock mode 2 + trigger mode

®
I2C.
RM0401 Rev 3
-M4 with FPU core halted), the TIMx
Section 26.16.2: Debug
RM0401