PRS peripheral API

EFM32 Peripheral Reflex System (PRS). More...

Collaboration diagram for PRS peripheral API:

Functions
void	prs_enable_gpio_output (enum prs_ch ch)
	Enable PRS output to GPIO. More...
void	prs_disable_gpio_output (enum prs_ch ch)
	Disable PRS output to GPIO. More...
void	prs_set_output_loc (uint32_t loc)
	Location of the PRS to be output on GPIO. More...
void	prs_software_pulse (enum prs_ch ch)
	Generate software pulse. More...
void	prs_software_level_high (enum prs_ch ch)
	HIGH is XOR'ed with the corresponding bit in the software-pulse and the PRS input signal to generate. More...
void	prs_software_level_low (enum prs_ch ch)
	LOW is XOR'ed with the corresponding bit in the software-pulse and the PRS input signal to generate. More...
void	prs_enable_async (enum prs_ch ch)
	disable synchronization of this channel reflex signal More...
void	prs_disable_async (enum prs_ch ch)
	enable synchronization of this channel reflex signal More...
void	prs_set_edge (enum prs_ch ch, uint32_t edge)
	Edge detection for the channel. More...
void	prs_set_source (enum prs_ch ch, uint32_t source)
	Source for the channel. More...
void	prs_set_signal (enum prs_ch ch, uint32_t signal)
	Source for the channel. More...

Detailed Description

EFM32 Peripheral Reflex System (PRS).

The Peripheral Reflex System (PRS) system is a network which allows the different peripheral modules to communicate directly with each other without involving the CPU.

Function Documentation

prs_disable_async()

void prs_disable_async

(

enum prs_ch

ch

)

enable synchronization of this channel reflex signal

Parameters

[in]

ch

Channel (use PRS_CHx)

See also

prs_disable_async()

Definition at line 112 of file prs_common.c.

References PRS_CHx_CTRL.

prs_disable_gpio_output()

void prs_disable_gpio_output

(

enum prs_ch

ch

)

Disable PRS output to GPIO.

Parameters

[in]

ch

Channel (use PRS_CHx)

See also

prs_set_output_loc()

Definition at line 46 of file prs_common.c.

References PRS_ROUTE.

prs_enable_async()

void prs_enable_async

(

enum prs_ch

ch

)

disable synchronization of this channel reflex signal

Parameters

[in]

ch

Channel (use PRS_CHx)

See also

prs_disable_async()

Definition at line 102 of file prs_common.c.

References PRS_CH_CTRL_ASYNC, and PRS_CHx_CTRL.

prs_enable_gpio_output()

void prs_enable_gpio_output

(

enum prs_ch

ch

)

Enable PRS output to GPIO.

Parameters

[in]

ch

Channel (use PRS_CHx)

See also

prs_set_output_loc()

Definition at line 36 of file prs_common.c.

References PRS_ROUTE, and PRS_ROUTE_CHxPEN.

prs_set_edge()

void prs_set_edge	(	enum prs_ch	ch,
		uint32_t	edge
	)

Edge detection for the channel.

Parameters

[in]	ch	Channel (use PRS_CHx)
[in]	edge	Edge (use PRS_CH_CTRL_EDSEL_*)

Definition at line 122 of file prs_common.c.

References PRS_CHx_CTRL.

prs_set_output_loc()

void prs_set_output_loc

(

uint32_t

loc

)

Location of the PRS to be output on GPIO.

Parameters

[in]

loc

location (use PRS_ROUTE_LOCATION_LOCx)

See also

prs_set_output_loc()

Definition at line 56 of file prs_common.c.

References PRS_ROUTE.

prs_set_signal()

void prs_set_signal	(	enum prs_ch	ch,
		uint32_t	signal
	)

Source for the channel.

Parameters

[in]	ch	Channel (use PRS_CHx)
[in]	signal	Signal (use PRS_CH_CTRL_SIGSEL_*)

See also

prs_set_source()

Definition at line 145 of file prs_common.c.

References PRS_CHx_CTRL.

prs_set_source()

void prs_set_source	(	enum prs_ch	ch,
		uint32_t	source
	)

Source for the channel.

Parameters

[in]	ch	Channel (use PRS_CHx)
[in]	source	Source (use PRS_CH_CTRL_SOURCESEL_*)

See also

prs_set_signal()

Definition at line 133 of file prs_common.c.

References PRS_CHx_CTRL.

prs_software_level_high()

void prs_software_level_high

(

enum prs_ch

ch

)

HIGH is XOR'ed with the corresponding bit in the software-pulse and the PRS input signal to generate.

Parameters

[in]

ch

Channel (use PRS_CHx)

See also

prs_software_level_low()

prs_software_pulse()

Definition at line 80 of file prs_common.c.

References PRS_SWLEVEL, and PRS_SWLEVEL_CHxLEVEL.

prs_software_level_low()

void prs_software_level_low

(

enum prs_ch

ch

)

LOW is XOR'ed with the corresponding bit in the software-pulse and the PRS input signal to generate.

Parameters

[in]

ch

Channel (use PRS_CHx)

See also

prs_software_level_high()

prs_software_pulse()

Definition at line 92 of file prs_common.c.

References PRS_SWLEVEL.

prs_software_pulse()

void prs_software_pulse

(

enum prs_ch

ch

)

Generate software pulse.

Parameters

[in]

ch

Channel (use PRS_CHx)

Note

the final output is dependent on "software level" value of the channel

See also

prs_software_level_high()

prs_software_level_low()

Definition at line 68 of file prs_common.c.

References PRS_SWPULSE, and PRS_SWPULSE_CHxPULSE.