Skip to content

daisy::Led

Module: LIBDAISY / HUMAN_INTERFACE / FEEDBACK

LED Class providing simple Software PWM ability, etc Eventually this will work with hardware PWM, and external LED Driver devices as well. More...

#include <led.h>

Public Functions

Name
Led()
~Led()
void Init(dsy_gpio_pin pin, bool invert, float samplerate =1000.0f)
void Set(float val)
void Update()
void SetSampleRate(float sample_rate)

Detailed Description

class daisy::Led;

LED Class providing simple Software PWM ability, etc Eventually this will work with hardware PWM, and external LED Driver devices as well.

Author: shensley

Date: March 2020

Public Functions Documentation

function Led

inline Led()

function ~Led

inline ~Led()

function Init

void Init(
    dsy_gpio_pin pin,
    bool invert,
    float samplerate =1000.0f
)

Parameters:

  • pin chooses LED pin
  • invert will set whether to internally invert the brightness due to hardware config.
  • samplerate sets the rate at which 'Update()' will be called (used for software PWM)

Initializes an LED using the specified hardware pin.

function Set

void Set(
    float val
)

Parameters:

  • val will be cubed for gamma correction, and then quantized to 8-bit values for Software PWM 8-bit is for more flexible update rate options, as 12-bit or more would require faster update rates.

Sets the brightness of the Led.

function Update

void Update()

This processes the pwm of the LED sets the hardware accordingly.

function SetSampleRate

inline void SetSampleRate(
    float sample_rate
)

Parameters:

  • sample_rate New update rate in hz.

Set the rate at which you'll update the leds without reiniting the led

---

Updated on 2024-01-03 at 19:41:01 +0000