I plan to implement velocity measurements for a BLDC motor with Halls A/B/C using the timer XOR as described in the STM32F411 Reference Manual RM0383, Section 12.3.18. The below graph is from Figure 39 on page 244. The red-lines are mine. Note that the signal TI1 includes the XOR'ed Hall A/B/C signals. However, the Hall A is needed for motor commutation.
Question: I also need the individual Hall signals for other reasons, including Hall A. Can the STM32F411 configured for this, although that is not obvious from the figure? Or is it necessary to implement the connection from TIMx_CH1 to TIMx_CH4 as shown by the red-lines? Thank you for your feedback.
