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
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
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.
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?
User | Revision | Line number | New 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 |