Tasmota/lib/NeoPixelBus-2.5.0.09/examples/bitmaps/NeoPixelBitmap/NeoPixelBitmap.ino

98 lines
3.0 KiB
C++

// NeoPixelBuffer
// This example will animate pixels using a bitmap stored on a SD card
//
//
// This will demonstrate the use of the NeoBitmapFile object
// NOTE: The images provided in the example directory should be copied to
// the root of the SD card so the below code will find it.
// NOTE: This sample and the included images were built for a 144 pixel strip so
// running this with a smaller string may not look as interesting. Try providing
// your own 24 bit bitmap for better results.
#include <NeoPixelBus.h>
#include <NeoPixelAnimator.h>
#include <SPI.h>
#include <SD.h>
const int chipSelect = D8; // make sure to set this to your SD carder reader CS
//typedef NeoGrbFeature MyPixelColorFeature;
typedef NeoGrbwFeature MyPixelColorFeature;
const uint16_t PixelCount = 144; // the sample images are meant for 144 pixels
const uint16_t PixelPin = 2;
const uint16_t AnimCount = 1; // we only need one
NeoPixelBus<MyPixelColorFeature, Neo800KbpsMethod> strip(PixelCount, PixelPin);
// for esp8266 omit the pin
//NeoPixelBus<MyPixelColorFeature, Neo800KbpsMethod> strip(PixelCount);
NeoPixelAnimator animations(AnimCount); // NeoPixel animation management object
// our NeoBitmapFile will use the same color feature as NeoPixelBus and
// we want it to use the SD File object
NeoBitmapFile<MyPixelColorFeature, File> image;
uint16_t animState;
void LoopAnimUpdate(const AnimationParam& param)
{
// wait for this animation to complete,
// we are using it as a timer of sorts
if (param.state == AnimationState_Completed)
{
// done, time to restart this position tracking animation/timer
animations.RestartAnimation(param.index);
// draw the complete row at animState to the complete strip
image.Blt(strip, 0, 0, animState, image.Width());
animState = (animState + 1) % image.Height(); // increment and wrap
}
}
void setup() {
Serial.begin(115200);
while (!Serial); // wait for serial attach
strip.Begin();
strip.Show();
Serial.print("Initializing SD card...");
// see if the card is present and can be initialized:
if (!SD.begin(chipSelect))
{
Serial.println("Card failed, or not present");
// don't do anything more:
return;
}
Serial.println("card initialized.");
// open the file
File bitmapFile = SD.open("strings.bmp");
if (!bitmapFile)
{
Serial.println("File open fail, or not present");
// don't do anything more:
return;
}
// initialize the image with the file
if (!image.Begin(bitmapFile))
{
Serial.println("File format fail, not a supported bitmap");
// don't do anything more:
return;
}
animState = 0;
// we use the index 0 animation to time how often we rotate all the pixels
animations.StartAnimation(0, 30, LoopAnimUpdate);
}
void loop() {
// this is all that is needed to keep it running
// and avoiding using delay() is always a good thing for
// any timing related routines
animations.UpdateAnimations();
strip.Show();
}