Data Structures
struct	led_pin_config_t
	The pin config struct of LED. More...

struct	led_rgb_config_t
	The pin config struct of rgb LED. More...

struct	led_monochrome_config_t
	The pin config struct of monochrome LED. More...

struct	led_config_t
	The config struct of LED. More...

struct	led_flash_config_t
	The flash config struct of LED. More...

Macros
#define	LED_DIMMING_ENABLEMENT (0U)
	Definition to determine whether enable dimming. More...

#define	LED_COLOR_WHEEL_ENABLEMENT (0U)
	Definition to determine whether enable color wheel. More...

#define	LED_HANDLE_SIZE ((16U * 3U) + 36U)
	Definition of LED handle size. More...

#define	LED_HANDLE_DEFINE(name) uint32_t name[((LED_HANDLE_SIZE - 1U) >> 2U) + 1U];
	Defines the led handle buffer. More...

#define	LED_TIMER_INTERVAL (100U)
	Definition of LED timer interval,unit is ms. More...

#define	LED_DIMMING_UPDATE_INTERVAL (100U)
	Definition of LED dimming update interval,unit is ms. More...

#define	LED_FLASH_CYCLE_FOREVER (0xFFFFFFFFU)
	Definition of LED flash cycle forever. More...

#define	LED_BLIP_INTERVAL (250U)
	Definition of LED blip interval,unit is ms. More...

#define	LED_MAKE_COLOR(r, g, b) ((led_color_t)((((led_color_t)b) << 16) \| (((led_color_t)g) << 8) \| ((led_color_t)r)))
	Definition to set LED color. More...

Typedefs
typedef void *	led_handle_t
	The handle of LED.

typedef uint32_t	led_color_t
	The color struct of LED.

Enumerations
enum	led_status_t { kStatus_LED_Success = kStatus_Success, kStatus_LED_Error = MAKE_STATUS(kStatusGroup_LED, 1), kStatus_LED_InvalidParameter = MAKE_STATUS(kStatusGroup_LED, 2) }
	The status type of LED. More...

enum	led_flash_type_t { kLED_FlashOneColor = 0x00U }
	The flash type of LED. More...

enum	_led_color { kLED_Black = LED_MAKE_COLOR(0, 0, 0), kLED_Red = LED_MAKE_COLOR(255, 0, 0), kLED_Green = LED_MAKE_COLOR(0, 255, 0), kLED_Yellow = LED_MAKE_COLOR(255, 255, 0), kLED_Blue = LED_MAKE_COLOR(0, 0, 255), kLED_Pink = LED_MAKE_COLOR(255, 0, 255), kLED_Aquamarine = LED_MAKE_COLOR(0, 255, 255), kLED_White = LED_MAKE_COLOR(255, 255, 255) }
	The color type of LED. More...

enum	led_type_t { kLED_TypeRgb = 0x01U, kLED_TypeMonochrome = 0x02U }
	The type of LED. More...

Functions
led_status_t	LED_Init (led_handle_t ledHandle, led_config_t *ledConfig)
	Initializes a LED with the LED handle and the user configuration structure. More...

led_status_t	LED_Deinit (led_handle_t ledHandle)
	Deinitializes a LED instance. More...

led_status_t	LED_SetColor (led_handle_t ledHandle, led_color_t ledRgbColor)
	Sets the LED color. More...

led_status_t	LED_TurnOnOff (led_handle_t ledHandle, uint8_t turnOnOff)
	Turns on or off the LED. More...

led_status_t	LED_Blip (led_handle_t ledHandle)
	Blips the LED. More...

led_status_t	LED_Flash (led_handle_t ledHandle, led_flash_config_t *ledFlash)
	Flashes the LED. More...

led_status_t	LED_Dimming (led_handle_t ledHandle, uint16_t dimmingPeriod, uint8_t increasement)
	Adjusts the brightness of the LED. More...

led_status_t	LED_EnterLowpower (led_handle_t ledHandle)
	Prepares to enter low power consumption. More...

led_status_t	LED_ExitLowpower (led_handle_t ledHandle)
	Restores from low power consumption. More...

Detailed Description

Data Structure Documentation

struct led_pin_config_t

Data Fields
uint8_t	dimmingEnable
	dimming enable, 0 - disable, 1 - enable

uint8_t	port
	GPIO Port.

uint8_t	pin
	GPIO Pin.

uint8_t	pinStateDefault
	GPIO Pin voltage when LED is off (0 - low level, 1 - high level) More...

uint32_t	sourceClock
	The clock source of the PWM module.

uint8_t	instance
	PWM instance of the pin.

uint8_t	channel
	PWM channel of the pin.

Field Documentation

uint8_t led_pin_config_t::pinStateDefault

The Pin voltage when LED is off (0 - low level, 1 - high level)

struct led_rgb_config_t

Data Fields
led_pin_config_t	redPin
	Red pin setting.

led_pin_config_t	greenPin
	Green pin setting.

led_pin_config_t	bluePin
	Blue pin setting.

struct led_monochrome_config_t

Data Fields
led_pin_config_t	monochromePin
	Monochrome pin setting.

struct led_config_t

struct led_flash_config_t

Data Fields
uint32_t	times
	Flash times, LED_FLASH_CYCLE_FOREVER for forever.

uint16_t	period
	Flash period, unit is ms.

led_flash_type_t	flashType
	Flash type, one color or color wheel. More...

uint8_t	duty
	Duty of the LED on for one period (duration = duty * period / 100). More...

Field Documentation

led_flash_type_t led_flash_config_t::flashType

Refer to led_flash_type_t

uint8_t led_flash_config_t::duty

Macro Definition Documentation

#define LED_DIMMING_ENABLEMENT (0U)

Enable or disable the dimming feature

#define LED_COLOR_WHEEL_ENABLEMENT (0U)

Enable or disable the color wheel feature

#define LED_HANDLE_SIZE ((16U * 3U) + 36U)

#define LED_HANDLE_DEFINE ( name ) uint32_t name[((LED_HANDLE_SIZE - 1U) >> 2U) + 1U];

This macro is used to define a 4 byte aligned led handle buffer for led queue. Then uses the name to get the led handle buffer pointer.

The macro should be global and could be optional. You could also define led handle buffer by yourself.

This is an example,

* LED_HANDLE_DEFINE(ledHandle);

*

Parameters

name	The name string of the led handle buffer.

#define LED_TIMER_INTERVAL (100U)

#define LED_DIMMING_UPDATE_INTERVAL (100U)

#define LED_FLASH_CYCLE_FOREVER (0xFFFFFFFFU)

#define LED_BLIP_INTERVAL (250U)

#define LED_MAKE_COLOR	(	r,
		g,
		b
	)	((led_color_t)((((led_color_t)b) << 16) \| (((led_color_t)g) << 8) \| ((led_color_t)r)))

Enumeration Type Documentation

enum led_status_t

Enumerator
kStatus_LED_Success	Success.
kStatus_LED_Error	Failed.
kStatus_LED_InvalidParameter	Invalid parameter.

enum led_flash_type_t

Enumerator
kLED_FlashOneColor	Fast with one color.

enum _led_color

Enumerator
kLED_Black	Black.
kLED_Red	Red.
kLED_Green	Green.
kLED_Yellow	Yellow.
kLED_Blue	Blue.
kLED_Pink	Pink.
kLED_Aquamarine	Aquamarine.
kLED_White	White.

enum led_type_t

Enumerator
kLED_TypeRgb	RGB LED.
kLED_TypeMonochrome	Monochrome LED.

Function Documentation

led_status_t LED_Init	(	led_handle_t	ledHandle,
		led_config_t *	ledConfig
	)

This function configures the LED with user-defined settings. The user can configure the configuration structure. The parameter ledHandle is a pointer to point to a memory space of size LED_HANDLE_SIZE allocated by the caller. The LED supports two types LED, RGB and monochrome. Please refer to led_type_t. These two types can be set by using led_config_t. The LED also supports LED dimming mode.

Example below shows how to use this API to configure the LED. For monochrome LED,

*   uint32_t s_ledMonochromeHandleBuffer[((LED_HANDLE_SIZE + sizeof(uint32_t) - 1) / sizeof(uitn32_t))];
*   led_handle_t s_ledMonochromeHandle = (led_handle_t)&s_ledMonochromeHandleBuffer[0];
*   led_config_t ledMonochromeConfig;
*   ledMonochromeConfig.type = kLED_TypeMonochrome;
*   ledMonochromeConfig.ledMonochrome.monochromePin.dimmingEnable = 0;
*   ledMonochromeConfig.ledMonochrome.monochromePin.gpio.port = 0;
*   ledMonochromeConfig.ledMonochrome.monochromePin.gpio.pin = 1;
*   ledMonochromeConfig.ledMonochrome.monochromePin.gpio.pinStateDefault = 0;
*   LED_Init(s_ledMonochromeHandle, &ledMonochromeConfig);
*  

For rgb LED,

*   uint32_t s_ledRgbHandleBuffer[((LED_HANDLE_SIZE + sizeof(uint32_t) - 1) / sizeof(uitn32_t))];
*   led_handle_t s_ledRgbHandle = (led_handle_t)&s_ledRgbHandleBuffer[0];
*   led_config_t ledRgbConfig;
*   ledRgbConfig.type = kLED_TypeRgb;
*   ledRgbConfig.ledRgb.redPin.dimmingEnable = 0;
*   ledRgbConfig.ledRgb.redPin.gpio.port = 0;
*   ledRgbConfig.ledRgb.redPin.gpio.pin = 1;
*   ledRgbConfig.ledRgb.redPin.gpio.pinStateDefault = 0;
*   ledRgbConfig.ledRgb.greenPin.dimmingEnable = 0;
*   ledRgbConfig.ledRgb.greenPin.gpio.port = 0;
*   ledRgbConfig.ledRgb.greenPin.gpio.pin = 2;
*   ledRgbConfig.ledRgb.greenPin.gpio.pinStateDefault = 0;
*   ledRgbConfig.ledRgb.bluePin.dimmingEnable = 0;
*   ledRgbConfig.ledRgb.bluePin.gpio.port = 0;
*   ledRgbConfig.ledRgb.bluePin.gpio.pin = 3;
*   ledRgbConfig.ledRgb.bluePin.gpio.pinStateDefault = 0;
*   LED_Init(s_ledRgbHandle, &ledRgbConfig);
*  

For dimming monochrome LED,

*   uint32_t s_ledMonochromeHandleBuffer[((LED_HANDLE_SIZE + sizeof(uint32_t) - 1) / sizeof(uitn32_t))];
*   led_handle_t s_ledMonochromeHandle = (led_handle_t)&s_ledMonochromeHandleBuffer[0];
*   led_config_t ledMonochromeConfig;
*   ledMonochromeConfig.type = kLED_TypeMonochrome;
*   ledMonochromeConfig.ledMonochrome.monochromePin.dimmingEnable = 1;
*   ledMonochromeConfig.ledMonochrome.monochromePin.dimming.sourceClock = 48000000;
*   ledMonochromeConfig.ledMonochrome.monochromePin.dimming.instance = 0;
*   ledMonochromeConfig.ledMonochrome.monochromePin.dimming.channel = 1;
*   ledMonochromeConfig.ledMonochrome.monochromePin.dimming.pinStateDefault = 0;
*   LED_Init(s_ledMonochromeHandle, &ledMonochromeConfig);
*  

Parameters

ledHandle	Pointer to point to a memory space of size LED_HANDLE_SIZE allocated by the caller. The handle should be 4 byte aligned, because unaligned access doesn't be supported on some devices. You can define the handle in the following two ways: LED_HANDLE_DEFINE(ledHandle); or uint32_t ledHandle[((LED_HANDLE_SIZE + sizeof(uint32_t) - 1) / sizeof(uitn32_t))];
ledConfig	Pointer to user-defined configuration structure.

Return values

kStatus_LED_Error	An error occurred.
kStatus_LED_Success	LED initialization succeed.

led_status_t LED_Deinit ( led_handle_t ledHandle )

This function deinitializes the LED instance.

Parameters

ledHandle LED handle pointer.

Return values

kStatus_LED_Success LED de-initialization succeed.

led_status_t LED_SetColor	(	led_handle_t	ledHandle,
		led_color_t	ledRgbColor
	)

This function sets the LED color. The function only supports the RGB LED. The default color is kLED_White. Please refer to LED_MAKE_COLOR(r,g,b).

Parameters

ledHandle	LED handle pointer.
ledRgbColor	LED color.

Return values

kStatus_LED_Error	An error occurred.
kStatus_LED_Success	Color setting succeed.

led_status_t LED_TurnOnOff	(	led_handle_t	ledHandle,
		uint8_t	turnOnOff
	)

This function turns on or off the led.

Parameters

ledHandle	LED handle pointer.
turnOnOff	Setting value, 1 - turns on, 0 - turns off.

Return values

kStatus_LED_Error	An error occurred.
kStatus_LED_Success	Successfully turn on or off the LED.

led_status_t LED_Blip ( led_handle_t ledHandle )

This function blips the led.

Parameters

ledHandle LED handle pointer.

Return values

kStatus_LED_Error	An error occurred.
kStatus_LED_Success	Successfully blip the LED.

led_status_t LED_Flash	(	led_handle_t	ledHandle,
		led_flash_config_t *	ledFlash
	)

This function flashes the led. The flash configuration is passed by using led_flash_config_t.

Parameters

ledHandle	LED handle pointer.
ledFlash	LED flash configuration.

Return values

kStatus_LED_Error	An error occurred.
kStatus_LED_Success	Successfully flash the LED.

led_status_t LED_Dimming	(	led_handle_t	ledHandle,
		uint16_t	dimmingPeriod,
		uint8_t	increasement
	)

This function adjust the brightness of the LED.

Parameters

ledHandle	LED handle pointer.
dimmingPeriod	The duration of the dimming (unit is ms).
increasement	Brighten or dim (1 - brighten, 0 - dim).

Return values

kStatus_LED_Error	An error occurred.
kStatus_LED_Success	Successfully adjust the brightness of the LED.

led_status_t LED_EnterLowpower ( led_handle_t ledHandle )

This function is used to prepare to enter low power consumption.

Parameters

ledHandle LED handle pointer.

Return values

kStatus_LED_Success Successful operation.

led_status_t LED_ExitLowpower ( led_handle_t ledHandle )

This function is used to restore from low power consumption.

Parameters

ledHandle LED handle pointer.

Return values

kStatus_LED_Success Successful operation.

Data Structures

Macros

Typedefs

Enumerations

Functions

Detailed Description

Data Structure Documentation

Data Fields

Field Documentation

Data Fields

Data Fields

Data Fields

Field Documentation

Macro Definition Documentation

Enumeration Type Documentation

Function Documentation