Timer Clock Source

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The code snippet bellow shows how to configure and use a GPIO pin as input.

#include "reg_stm32f4xx.h"
 
/* TO-DODELI DOO. */

Hardware Abstraction Layer
Registry Types
InES Timer HAL Interface

Configuration register 1

Slave mode control register

ETP	0	ETR is noninverted, active at high level or rising edge (reset state)
ETP	1	ETR is inverted, active at low level or falling edge
ETPS	00	Prescaler off (reset state)
	01	f_ETRP / 2
	10	f_ETRP / 4
	11	f_ETRP / 8
EXTSEL	0000	No filter, f_DTS (reset state)	1000	f_sampling ⇒ f_DTS / 8, N=6
	0001	f_sampling ⇒ f_CKINT, N=2	1001	f_sampling ⇒ f_DTS / 8, N=8
	0010	f_sampling ⇒ f_CKINT, N=4	1010	f_sampling ⇒ f_DTS / 16, N=5
	0011	f_sampling ⇒ f_CKINT, N=8	1011	f_sampling ⇒ f_DTS / 16, N=6
	0100	f_sampling ⇒ f_DTS / 2, N=6	1100	f_sampling ⇒ f_DTS / 16, N=8
	0101	f_sampling ⇒ f_DTS / 2, N=8	1101	f_sampling ⇒ f_DTS / 32, N=5
	0110	f_sampling ⇒ f_DTS / 4, N=6	1110	f_sampling ⇒ f_DTS / 32, N=6
	0111	f_sampling ⇒ f_DTS / 4, N=8	1111	f_sampling ⇒ f_DTS / 32, N=8

Programming Example