stm32 /stm32wb0 /STM32WB05 /TIM17 /CCMR1_in

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Interpret as CCMR1_in

31 2827 2423 2019 1615 1211 87 43 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0CC1S 0IC1PSC 0IC1F

Fields

CC1S

CC1S: Capture/Compare 1 Selection

This bit-field defines the direction of the channel (input/output) as well as the used input.

00: CC1 channel is configured as output

01: CC1 channel is configured as input, IC1 is mapped on TI1

1x: Reserved

Note: CC1S bits are writable only when the channel is OFF (CC1E = ‘0’ in TIMx_CCER).

IC1PSC

IC1PSC: Input capture 1 prescaler

This bit-field defines the ratio of the prescaler acting on CC1 input (IC1).

The prescaler is reset as soon as CC1E=‘0’ (TIMx_CCER register).

00: no prescaler, capture is done each time an edge is detected on the capture input.

01: capture is done once every 2 events

10: capture is done once every 4 events

11: capture is done once every 8 events

IC1F

Bits 7:4 IC1F[3:0]: Input capture 1 filter

This bit-field defines the frequency used to sample TI1 input and the length of the digital filter

applied to TI1. The digital filter is made of an event counter in which N events are needed to

validate a transition on the output:

0000: No filter, sampling is done at fDTS

0001: fSAMPLING=fCK_INT, N=2

0010: fSAMPLING=fCK_INT, N=4

0011: fSAMPLING=fCK_INT, N=8

0100: fSAMPLING=fDTS/2, N=

0101: fSAMPLING=fDTS/2, N=8

0110: fSAMPLING=fDTS/4, N=6

0111: fSAMPLING=fDTS/4, N=8

1000: fSAMPLING=fDTS/8, N=6

1001: fSAMPLING=fDTS/8, N=8

1010: fSAMPLING=fDTS/16, N=5

1011: fSAMPLING=fDTS/16, N=6

1100: fSAMPLING=fDTS/16, N=8

1101: fSAMPLING=fDTS/32, N=5

1110: fSAMPLING=fDTS/32, N=6

1111: fSAMPLING=fDTS/32, N=8

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