Ned Konz / Mbed 2 deprecated Multi_WS2811_test

Test program for my Multi_WS2811 library that started out as a fork of heroic/WS2811. My library uses hardware DMA on the FRDM-KL25Z to drive up to 16 strings of WS2811 or WS2812 LEDs in parallel.

Dependencies:   Multi_WS2811 mbed MMA8451Q

Fork of WS2811 by Heroic Robotics

NOTE: I have accidentally pushed changes for another fork of this program that I used in the recent Georgetown Carnival Power Tool Races. When I get some time, I will restore the test program to its original glory.

You can see my power tool racer (Nevermore's Revenge) here

/media/uploads/bikeNomad/img_0482.jpg

This tests my FRDM-KL25Z multi-string WS2811/WS2812 library. It uses the accelerometer to change the rainbow phase on two strings of LEDs as well as the touch sense to change brightness.

A video of this program in operation is here.

Here is the library that I developed to run the LEDs:

Import libraryMulti_WS2811

Library allowing up to 16 strings of 60 WS2811 or WS2812 LEDs to be driven from a single FRDM-KL25Z board. Uses hardware DMA to do a full 800 KHz rate without much CPU burden.

Last commit 13 Jun 2015 by Ned Konz

audio.h@40:d5c8ce80b6c4, 2016-06-10 (annotated)

Committer:
Ned Konz
Date:
Fri Jun 10 08:56:46 2016 -0700
Revision:
40:d5c8ce80b6c4
Added audio

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Ned Konz 40:d5c8ce80b6c4 1 #ifndef __included_audio_h
Ned Konz 40:d5c8ce80b6c4 2 #define __included_audio_h
Ned Konz 40:d5c8ce80b6c4 3
Ned Konz 40:d5c8ce80b6c4 4 #include <stdint.h>
Ned Konz 40:d5c8ce80b6c4 5
Ned Konz 40:d5c8ce80b6c4 6 #ifndef AUDIO_DAC_PIN
Ned Konz 40:d5c8ce80b6c4 7 #define AUDIO_DAC_PIN PTE30 // J10/11 on FRDM-KL25Z
Ned Konz 40:d5c8ce80b6c4 8 #endif
Ned Konz 40:d5c8ce80b6c4 9
Ned Konz 40:d5c8ce80b6c4 10 namespace NKAudio
Ned Konz 40:d5c8ce80b6c4 11 {
Ned Konz 40:d5c8ce80b6c4 12
Ned Konz 40:d5c8ce80b6c4 13 struct AudioFile
Ned Konz 40:d5c8ce80b6c4 14 {
Ned Konz 40:d5c8ce80b6c4 15 const unsigned char *data;
Ned Konz 40:d5c8ce80b6c4 16 unsigned int length;
Ned Konz 40:d5c8ce80b6c4 17 };
Ned Konz 40:d5c8ce80b6c4 18
Ned Konz 40:d5c8ce80b6c4 19 extern const AudioFile audioFiles[];
Ned Konz 40:d5c8ce80b6c4 20
Ned Konz 40:d5c8ce80b6c4 21 // Analog:
Ned Konz 40:d5c8ce80b6c4 22 // GND J3/14
Ned Konz 40:d5c8ce80b6c4 23 // VrefH J3/16
Ned Konz 40:d5c8ce80b6c4 24 // output J10/11, PTE30
Ned Konz 40:d5c8ce80b6c4 25
Ned Konz 40:d5c8ce80b6c4 26 const unsigned SAMPLE_RATE_HZ = 8000;
Ned Konz 40:d5c8ce80b6c4 27 const unsigned SAMPLE_PERIOD_US = (1000000U / SAMPLE_RATE_HZ);
Ned Konz 40:d5c8ce80b6c4 28 const unsigned SAMPLE_BUFFER_SIZE = 14000;
Ned Konz 40:d5c8ce80b6c4 29 const unsigned AUDIO_WAIT_DURATION_US = 10000;
Ned Konz 40:d5c8ce80b6c4 30 const uint16_t DC_BIAS = 0x8000;
Ned Konz 40:d5c8ce80b6c4 31
Ned Konz 40:d5c8ce80b6c4 32 typedef void (*AudioCallback)();
Ned Konz 40:d5c8ce80b6c4 33
Ned Konz 40:d5c8ce80b6c4 34 class AudioPlayer
Ned Konz 40:d5c8ce80b6c4 35 {
Ned Konz 40:d5c8ce80b6c4 36 public:
Ned Konz 40:d5c8ce80b6c4 37 static unsigned numberOfFiles()
Ned Konz 40:d5c8ce80b6c4 38 {
Ned Konz 40:d5c8ce80b6c4 39 static unsigned nFiles;
Ned Konz 40:d5c8ce80b6c4 40 if (!nFiles) { // count files first time
Ned Konz 40:d5c8ce80b6c4 41 for (AudioFile const *p = audioFiles; p->data != NULL; p++) {
Ned Konz 40:d5c8ce80b6c4 42 nFiles++;
Ned Konz 40:d5c8ce80b6c4 43 }
Ned Konz 40:d5c8ce80b6c4 44 } else {
Ned Konz 40:d5c8ce80b6c4 45 return nFiles;
Ned Konz 40:d5c8ce80b6c4 46 }
Ned Konz 40:d5c8ce80b6c4 47 }
Ned Konz 40:d5c8ce80b6c4 48
Ned Konz 40:d5c8ce80b6c4 49 static bool playFileNumbered(unsigned n, AudioCallback cb = NULL)
Ned Konz 40:d5c8ce80b6c4 50 {
Ned Konz 40:d5c8ce80b6c4 51 n %= numberOfFiles();
Ned Konz 40:d5c8ce80b6c4 52 return playAudio(reinterpret_cast<int8_t const * const>(audioFiles[n].data), audioFiles[n].length, cb);
Ned Konz 40:d5c8ce80b6c4 53 }
Ned Konz 40:d5c8ce80b6c4 54
Ned Konz 40:d5c8ce80b6c4 55 static bool playAudio(int8_t const *start, uint16_t nsamples, AudioCallback cb = 0);
Ned Konz 40:d5c8ce80b6c4 56
Ned Konz 40:d5c8ce80b6c4 57 static bool audioDone() { return !samplesRemaining; }
Ned Konz 40:d5c8ce80b6c4 58
Ned Konz 40:d5c8ce80b6c4 59 private:
Ned Konz 40:d5c8ce80b6c4 60 static void playAudioSample();
Ned Konz 40:d5c8ce80b6c4 61 static int8_t const * volatile nextSample;
Ned Konz 40:d5c8ce80b6c4 62 static uint16_t volatile samplesRemaining;
Ned Konz 40:d5c8ce80b6c4 63 };
Ned Konz 40:d5c8ce80b6c4 64
Ned Konz 40:d5c8ce80b6c4 65 } // namespace NKAudio
Ned Konz 40:d5c8ce80b6c4 66
Ned Konz 40:d5c8ce80b6c4 67 #endif