LED Driver#

Generic LED Driver.


Introduction#

The LED driver is a platfom level software module that manages the control of various types of LEDs. There are currently two types of LEDs supported by the LED driver:

The common LED functions are called through the generic LED driver, while other functions specific to a certain type of LED are called directly through their own driver.


Configuration#

All LED instances are configured with an sl_led_t struct and a type specific context struct, and sometimes additional structs. There is also a typedef sl_led_state_t to get the state of an LED. These structs are automatically generated after an LED is set up using Simplicity Studio's wizard, along with a function definition for initializing all LEDs of that type. Specific setups for the various LED types are in the following sections.


Usage#

Once the LED structs are defined, the common LED functions can be called being passed an instance of sl_led_t, which will be redirected to calling the type specific version of that function. The common functions include the following:

These functions allow for initializing the LED, turning it on and off, toggling it, and getting the current on/off state of it. Other functions are called through the specific type of LED's API directly. The usages of the different types of LEDs are described in detail in the following sections.

Modules#

sl_led_t

Simple LED Driver

Simple RGB PWM LED Driver

Typedefs#

typedef uint8_t

LED state.

Functions#

sl_status_t
sl_led_init(const sl_led_t *led_handle)

Initialize the LED driver.

void
sl_led_turn_on(const sl_led_t *led_handle)

Turn on the LED.

void
sl_led_turn_off(const sl_led_t *led_handle)

Turn off the LED.

void
sl_led_toggle(const sl_led_t *led_handle)

Toggle the LED.

sl_led_get_state(const sl_led_t *led_handle)

Get the current state of the LED.

Macros#

#define

LED state off.

#define

LED state on.

Typedef Documentation#

sl_led_state_t#

typedef uint8_t sl_led_state_t

LED state.


Definition at line 62 of file platform/driver/leddrv/inc/sl_led.h

Function Documentation#

sl_led_init#

sl_status_t sl_led_init (const sl_led_t * led_handle)

Initialize the LED driver.

Parameters
[in]led_handle

Pointer to instance of sl_led_t to initialize

Call this function before any other LED function. Initializes the selected LED GPIO, mode, and polarity.

Returns

  • Status Code:

    • SL_STATUS_OK


Definition at line 87 of file platform/driver/leddrv/inc/sl_led.h

sl_led_turn_on#

void sl_led_turn_on (const sl_led_t * led_handle)

Turn on the LED.

Parameters
[in]led_handle

Pointer to instance of sl_led_t to turn on


Definition at line 94 of file platform/driver/leddrv/inc/sl_led.h

sl_led_turn_off#

void sl_led_turn_off (const sl_led_t * led_handle)

Turn off the LED.

Parameters
[in]led_handle

Pointer to instance of sl_led_t to turn off


Definition at line 101 of file platform/driver/leddrv/inc/sl_led.h

sl_led_toggle#

void sl_led_toggle (const sl_led_t * led_handle)

Toggle the LED.

Parameters
[in]led_handle

Pointer to instance of sl_led_t to toggle

Turn it on if it is off, and off if it is on.


Definition at line 108 of file platform/driver/leddrv/inc/sl_led.h

sl_led_get_state#

sl_led_state_t sl_led_get_state (const sl_led_t * led_handle)

Get the current state of the LED.

Parameters
[in]led_handle

Pointer to instance of sl_led_t to check

Returns

  • sl_led_state_t Current state of LED. 1 for on, 0 for off


Definition at line 117 of file platform/driver/leddrv/inc/sl_led.h

Macro Definition Documentation#

SL_LED_CURRENT_STATE_OFF#

#define SL_LED_CURRENT_STATE_OFF
Value:
0U

LED state off.


Definition at line 55 of file platform/driver/leddrv/inc/sl_led.h

SL_LED_CURRENT_STATE_ON#

#define SL_LED_CURRENT_STATE_ON
Value:
1U

LED state on.


Definition at line 56 of file platform/driver/leddrv/inc/sl_led.h