Error with OctoWS2811 - VideoSDcard

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monodose

Member
hi, i'm tring to compile the example VideoSDcard but i have an error:
Code: 
Opzioni di compilazione cambiate, ricompilo tutto
c:/program files (x86)/arduino/hardware/tools/arm/bin/../lib/gcc/arm-none-eabi/4.8.4/../../../../arm-none-eabi/lib/armv7e-m\libc.a(lib_a-openr.o): In function `_open_r':
openr.c:(.text._open_r+0x10): undefined reference to `_open'
collect2.exe: error: ld returned 1 exit status
exit status 1
Errore durante la compilazione
i'm using Teensy 3.2,i have try with arduino 1.6.7 with teensyduino 1.27 and 1.6.8 with teensyduino 1.28 beta, but i have the same result
thx in advice
 
Well, this seems to be a *really* strange bug in these newer versions of Arduino.

This is going to sound weird, but.... you can work around this problem by opening a new Arduino window. Delete the placeholder code. Then select the entire VideoSDcard example in the first window with CTRL-A, and copy with CTRL-C, and then paste into the new window with CTRL-V.

The exact same code will compile without error in the newly opened window!

Definitely a strange bug added in recent versions of Arduino.
 
Oh, I see what's happening. These newer versions of Arduino are finding the addaudio program in a subfolder and trying to build it as part of your sketch. Not nice.

I'll move them to an "extras" folder for the next release.
 
Hi, many thx for help, its now working, but i think i have some problem whit function leds.show(); in the row 109, the program stay there for very long time(20 min for fps) here the code:
Code: 
#include <OctoWS2811.h>
#include <SPI.h>
#include <SD.h>
#include <Audio.h>
#include <Wire.h>

#define LED_WIDTH    137   // number of LEDs horizontally
#define LED_HEIGHT   16   // number of LEDs vertically (must be multiple of 8)

#define FILENAME     "VIDEO.BIN"

const int ledsPerStrip = LED_WIDTH * LED_HEIGHT / 8;
DMAMEM int displayMemory[ledsPerStrip*6];
int drawingMemory[ledsPerStrip*6];
elapsedMicros elapsedSinceLastFrame = 0;
bool playing = false;

OctoWS2811 leds(ledsPerStrip, displayMemory, drawingMemory, WS2811_800kHz);
File videofile;

AudioPlayQueue     audio;
AudioOutputAnalog  dac;
AudioConnection    patchCord1(audio, dac);


void setup() {
  AudioMemory(40);
  while (!Serial) ;
  delay(50);
  Serial.println("VideoSDcard");
  leds.begin();
  leds.show();
  if (!SD.begin(4)) stopWithErrorMessage("Could not access SD card");
  Serial.println("SD card ok");
  videofile = SD.open(FILENAME, FILE_READ);
  if (!videofile) stopWithErrorMessage("Could not read " FILENAME);
  Serial.println("File opened");
  playing = true;
  elapsedSinceLastFrame = 0;
}

// read from the SD card, true=ok, false=unable to read
// the SD library is much faster if all reads are 512 bytes
// this function lets us easily read any size, but always
// requests data from the SD library in 512 byte blocks.
//
bool sd_card_read(void *ptr, unsigned int len)
{
  static unsigned char buffer[512];
  static unsigned int bufpos = 0;
  static unsigned int buflen = 0;
  unsigned char *dest = (unsigned char *)ptr;
  unsigned int n;

  while (len > 0) {
    if (buflen == 0) {
      n = videofile.read(buffer, 512);
      if (n == 0) return false;    
      buflen = n;
      bufpos = 0;
    }
    unsigned int n = buflen;
    if (n > len) n = len;
    memcpy(dest, buffer + bufpos, n);
    dest += n;
    bufpos += n;
    buflen -= n;
    len -= n;
  }
  return true;
}

// skip past data from the SD card
void sd_card_skip(unsigned int len)
{
  unsigned char buf[256];

  while (len > 0) {
    unsigned int n = len;
    if (n > sizeof(buf)) n = sizeof(buf);
    sd_card_read(buf, n);
    len -= n;
  }
}


void loop()
{
  unsigned char header[5];

  if (playing) {
    if (sd_card_read(header, 5)) {
      if (header[0] == '*') {
        // found an image frame
        unsigned int size = (header[1] | (header[2] << 8)) * 3;
        unsigned int usec = header[3] | (header[4] << 8);
        unsigned int readsize = size;
   Serial.printf("v: %u %u", size, usec);
        if (readsize > sizeof(drawingMemory)) {
          readsize = sizeof(drawingMemory);
        }
        if (sd_card_read(drawingMemory, readsize)) {
           Serial.printf(", us = %u", (unsigned int)elapsedSinceLastFrame);
           Serial.println();
          while (elapsedSinceLastFrame < usec) Serial.printf("us = %u", (unsigned int)elapsedSinceLastFrame); ; // wait
          elapsedSinceLastFrame -= usec;
          Serial.print("\nwhile Done");
          leds.show(); ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// here the program stuck, row 109
          Serial.print("\nShow Done");
        } else {
          error("unable to read video frame data");
          return;
        }
        if (readsize < size) {
          sd_card_skip(size - readsize);
        }
      } else if (header[0] == '%') {
        // found a chunk of audio data
        unsigned int size = (header[1] | (header[2] << 8)) * 2;
         Serial.printf("a: %u", size);
   Serial.println();
  while (size > 0) {
    unsigned int len = size;
    if (len > 256) len = 256;
    int16_t *p = audio.getBuffer();
    if (!sd_card_read(p, len)) {
      error("unable to read audio frame data");
            return;
    }
    if (len < 256) {
            for (int i=len; i < 256; i++) {
              *((char *)p + i) = 0;  // fill rest of buffer with zero
            }
    }
          audio.playBuffer();
    size -= len;
  }
      } else {
        error("unknown header");
        return;
      }
    } else {
      error("unable to read 5-byte header");
      return;
    }
  } else {
    delay(2000);
    videofile = SD.open(FILENAME, FILE_READ);
    if (videofile) {
      Serial.println("File opened");
      playing = true;
      elapsedSinceLastFrame = 0;
    }
  }
}

// when any error happens during playback, close the file and restart
void error(const char *str)
{
  Serial.print("error: ");
  Serial.println(str);
  videofile.close();
  playing = false;
}

// when an error happens during setup, give up and print a message
// to the serial monitor.
void stopWithErrorMessage(const char *str)
{
  while (1) {
    Serial.println(str);
    delay(1000);
  }
}

and here the serial result:
Code: 
VideoSDcard
SD card ok
File opened
v: 6576 41666, us = 7808
, us = 7843, us = 7874, us = 7905, us = 7936, us = 7967, us = 8000, us = 8031, us = 8065, us = 8096, us = 8127, us = 8158, us = 8192, us = 8223, us = 8267, us = 8298, us = 8329, us = 8360, us = 8395, us = 8426, us = 8460, us = 8491, us = 8522, us = 8553, us = 8587, us = 8618, us = 8652, us = 8683, us = 8714, us = 8748, us = 8778, us = 8812, us = 8843, us = 8874, us = 8905, us = 8939, us = 8970, us = 9004, us = 9035, us = 9065, us = 9096, us = 9130, us = 9161, us = 9195, us = 9226, us = 9257, us = 9288, us = 9321, us = 9352, us = 9385, us = 9416, us = 9450, us = 9481, us = 9515, us = 9546, us = 9580, us = 9611, us = 9642, us = 9674, us = 9706, us = 9740, us = 9771, us = 9802, us = 9832, us = 9866, us = 9897, us = 9931, us = 9962, us = 9993, us = 10024, us = 10061, us = 10096, us = 10134, us = 10169, us = 10203, us = 10241, us = 10275, us = 10313, us = 10348, us = 10385, us = 10419, us = 10457, us = 10492, us = 10529, us = 10564, us = 10599, us = 10637, us = 10671, us = 10709, us = 10744, us = 10779, us = 10816, us = 10851, us = 10889, us = 10923, us = 10958, us = 10993, us = 11030, us = 11065, us = 11103, us = 11148, us = 11183, us = 11220, us = 11255, us = 11293, us = 11327, us = 11362, us = 11402, us = 11436, us = 11474, us = 11509, us = 11544, us = 11578, us = 11616, us = 11651, us = 11689, us = 11723, us = 11758, us = 11796, us = 11830, us = 11868, us = 11903, us = 11938, us = 11975, us = 12010, us = 12048, us = 12082, us = 12117, us = 12152, us = 12189, us = 12224, us = 12262, us = 12296, us = 12331, us = 12369, us = 12405, us = 12443, us = 12478, us = 12512, us = 12550, us = 12585, us = 12623, us = 12658, us = 12692, us = 12727, us = 12764, us = 12799, us = 12837, us = 12872, us = 12906, us = 12944, us = 12979, us = 13017, us = 13051, us = 13086, us = 13123, us = 13158, us = 13196, us = 13231, us = 13265, us = 13300, us = 13338, us = 13372, us = 13409, us = 13447, us = 13482, us = 13519, us = 13554, us = 13592, us = 13627, us = 13661, us = 13699, us = 13734, us = 13772, us = 13806, us = 13841, us = 13876, us = 13913, us = 13948, us = 13986, us = 14020, us = 14065, us = 14103, us = 14138, us = 14176, us = 14210, us = 14245, us = 14282, us = 14317, us = 14355, us = 14391, us = 14426, us = 14461, us = 14498, us = 14533, us = 14571, us = 14606, us = 14641, us = 14678, us = 14713, us = 14751, us = 14785, us = 14820, us = 14857, us = 14892, us = 14930, us = 14965, us = 15000, us = 15034, us = 15072, us = 15106, us = 15144, us = 15179, us = 15214, us = 15251, us = 15286, us = 15324, us = 15359, us = 15395, us = 15433, us = 15467, us = 15505, us = 15540, us = 15575, us = 15610, us = 15647, us = 15682, us = 15720, us = 15755, us = 15789, us = 15827, us = 15861, us = 15899, us = 15934, us = 15969, us = 16006, us = 16041, us = 16079, us = 16114, us = 16148, us = 16183, us = 16220, us = 16255, us = 16293, us = 16328, us = 16362, us = 16402, us = 16437, us = 16474, us = 16509, us = 16544, us = 16581, us = 16616, us = 16654, us = 16689, us = 16724, us = 16759, us = 16796, us = 16831, us = 16869, us = 16903, us = 16948, us = 16986, us = 17021, us = 17058, us = 17093, us = 17128, us = 17165, us = 17200, us = 17238, us = 17272, us = 17307, us = 17342, us = 17379, us = 17416, us = 17454, us = 17488, us = 17523, us = 17561, us = 17595, us = 17634, us = 17668, us = 17703, us = 17740, us = 17775, us = 17813, us = 17848, us = 17882, us = 17917, us = 17955, us = 17989, us = 18027, us = 18062, us = 18097, us = 18134, us = 18169, us = 18206, us = 18241, us = 18276, us = 18313, us = 18348, us = 18385, us = 18419, us = 18457, us = 18492, us = 18529, us = 18564, us = 18602, us = 18637, us = 18672, us = 18709, us = 18744, us = 18782, us = 18816, us = 18851, us = 18888, us = 18923, us = 18961, us = 18996, us = 19031, us = 19065, us = 19103, us = 19137, us = 19175, us = 19210, us = 19245, us = 19282, us = 19317, us = 19355, us = 19391, us = 19426, us = 19463, us = 19498, us = 19536, us = 19571, us = 19606, us = 19640, us = 19678, us = 19713, us = 19750, us = 19785, us = 19820, us = 19868, us = 19902, us = 19940, us = 19975, us = 20010, us = 20047, us = 20082, us = 20120, us = 20155, us = 20189, us = 20224, us = 20261, us = 20296, us = 20331, us = 20366, us = 20402, us = 20440, us = 20474, us = 20509, us = 20544, us = 20579, us = 20617, us = 20651, us = 20686, us = 20721, us = 20756, us = 20790, us = 20828, us = 20863, us = 20897, us = 20932, us = 20967, us = 21005, us = 21039, us = 21074, us = 21109, us = 21144, us = 21181, us = 21216, us = 21251, us = 21286, us = 21320, us = 21355, us = 21395, us = 21429, us = 21467, us = 21505, us = 21540, us = 21581, us = 21620, us = 21658, us = 21692, us = 21731, us = 21771, us = 21806, us = 21844, us = 21882, us = 21917, us = 21951, us = 21989, us = 22024, us = 22061, us = 22096, us = 22131, us = 22168, us = 22203, us = 22241, us = 22276, us = 22311, us = 22348, us = 22385, us = 22420, us = 22458, us = 22492, us = 22527, us = 22565, us = 22599, us = 22638, us = 22672, us = 22707, us = 22755, us = 22790, us = 22828, us = 22862, us = 22897, us = 22935, us = 22969, us = 23007, us = 23042, us = 23077, us = 23111, us = 23149, us = 23184, us = 23222, us = 23256, us = 23291, us = 23329, us = 23363, us = 23400, us = 23438, us = 23473, us = 23510, us = 23545, us = 23583, us = 23618, us = 23653, us = 23687, us = 23725, us = 23760, us = 23797, us = 23832, us = 23867, us = 23904, us = 23939, us = 23977, us = 24012, us = 24047, us = 24084, us = 24119, us = 24157, us = 24192, us = 24226, us = 24261, us = 24299, us = 24333, us = 24368, us = 24405, us = 24443, us = 24480, us = 24515, us = 24553, us = 24588, us = 24623, us = 24660, us = 24695, us = 24733, us = 24768, us = 24802, us = 24837, us = 24875, us = 24909, us = 24947, us = 24982, us = 25017, us = 25054, us = 25089, us = 25127, us = 25162, us = 25197, us = 25234, us = 25269, us = 25307, us = 25341, us = 25376, us = 25413, us = 25450, us = 25485, us = 25523, us = 25558, us = 25592, us = 25630, us = 25676, us = 25713, us = 25748, us = 25783, us = 25820, us = 25855, us = 25893, us = 25928, us = 25963, us = 25997, us = 26035, us = 26070, us = 26107, us = 26142, us = 26177, us = 26214, us = 26249, us = 26287, us = 26322, us = 26357, us = 26396, us = 26431, us = 26469, us = 26504, us = 26538, us = 26573, us = 26611, us = 26646, us = 26684, us = 26718, us = 26753, us = 26791, us = 26825, us = 26863, us = 26898, us = 26933, us = 26970, us = 27005, us = 27043, us = 27078, us = 27112, us = 27147, us = 27185, us = 27219, us = 27257, us = 27292, us = 27327, us = 27364, us = 27401, us = 27439, us = 27474, us = 27508, us = 27546, us = 27581, us = 27619, us = 27653, us = 27688, us = 27723, us = 27760, us = 27795, us = 27833, us = 27868, us = 27903, us = 27940, us = 27975, us = 28013, us = 28048, us = 28082, us = 28120, us = 28155, us = 28193, us = 28227, us = 28262, us = 28297, us = 28334, us = 28369, us = 28406, us = 28444, us = 28478, us = 28516, us = 28564, us = 28599, us = 28634, us = 28669, us = 28706, us = 28741, us = 28779, us = 28814, us = 28849, us = 28883, us = 28921, us = 28956, us = 28994, us = 29028, us = 29063, us = 29101, us = 29135, us = 29173, us = 29208, us = 29243, us = 29280, us = 29315, us = 29353, us = 29390, us = 29424, us = 29459, us = 29497, us = 29531, us = 29569, us = 29604, us = 29639, us = 29677, us = 29711, us = 29749, us = 29784, us = 29819, us = 29856, us = 29891, us = 29929, us = 29964, us = 29999, us = 30033, us = 30071, us = 30106, us = 30143, us = 30178, us = 30213, us = 30250, us = 30285, us = 30323, us = 30358, us = 30395, us = 30432, us = 30467, us = 30505, us = 30540, us = 30574, us = 30610, us = 30647, us = 30682, us = 30720, us = 30755, us = 30789, us = 30827, us = 30862, us = 30899, us = 30934, us = 30969, us = 31006, us = 31041, us = 31079, us = 31114, us = 31149, us = 31183, us = 31221, us = 31256, us = 31293, us = 31328, us = 31363, us = 31402, us = 31437, us = 31485, us = 31520, us = 31555, us = 31592, us = 31627, us = 31665, us = 31700, us = 31735, us = 31770, us = 31807, us = 31842, us = 31880, us = 31914, us = 31949, us = 31987, us = 32021, us = 32059, us = 32094, us = 32129, us = 32166, us = 32201, us = 32239, us = 32274, us = 32309, us = 32343, us = 32383, us = 32417, us = 32455, us = 32490, us = 32525, us = 32562, us = 32597, us = 32632, us = 32667, us = 32702, us = 32739, us = 32774, us = 32809, us = 32843, us = 32878, us = 32913, us = 32950, us = 32985, us = 33020, us = 33055, us = 33089, us = 33127, us = 33162, us = 33197, us = 33231, us = 33266, us = 33304, us = 33338, us = 33373, us = 33410, us = 33445, us = 33479, us = 33517, us = 33552, us = 33587, us = 33622, us = 33657, us = 33694, us = 33729, us = 33764, us = 33799, us = 33833, us = 33871, us = 33906, us = 33941, us = 33975, us = 34010, us = 34045, us = 34083, us = 34118, us = 34152, us = 34187, us = 34222, us = 34439, us = 34474, us = 34512, us = 34550, us = 34584, us = 34626, us = 34664, us = 34699, us = 34737, us = 34775, us = 34809, us = 34850, us = 34888, us = 34923, us = 34961, us = 34999, us = 35039, us = 35074, us = 35112, us = 35147, us = 35182, us = 35219, us = 35254, us = 35292, us = 35327, us = 35361, us = 35398, us = 35435, us = 35470, us = 35508, us = 35543, us = 35578, us = 35616, us = 35650, us = 35688, us = 35723, us = 35758, us = 35795, us = 35830, us = 35868, us = 35903, us = 35938, us = 35972, us = 36010, us = 36045, us = 36083, us = 36117, us = 36152, us = 36190, us = 36224, us = 36262, us = 36297, us = 36332, us = 36369, us = 36406, us = 36443, us = 36478, us = 36513, us = 36548, us = 36585, us = 36620, us = 36658, us = 36693, us = 36728, us = 36765, us = 36800, us = 36838, us = 36873, us = 36908, us = 36945, us = 36980, us = 37018, us = 37053, us = 37087, us = 37122, us = 37160, us = 37194, us = 37232, us = 37277, us = 37312, us = 37350, us = 37386, us = 37421, us = 37459, us = 37494, us = 37531, us = 37566, us = 37604, us = 37639, us = 37674, us = 37709, us = 37746, us = 37781, us = 37819, us = 37853, us = 37888, us = 37926, us = 37960, us = 37998, us = 38033, us = 38068, us = 38105, us = 38140, us = 38178, us = 38213, us = 38247, us = 38282, us = 38320, us = 38354, us = 38391, us = 38426, us = 38463, us = 38501, us = 38536, us = 38574, us = 38609, us = 38643, us = 38681, us = 38716, us = 38754, us = 38788, us = 38823, us = 38858, us = 38895, us = 38930, us = 38968, us = 39003, us = 39038, us = 39075, us = 39110, us = 39148, us = 39182, us = 39217, us = 39255, us = 39289, us = 39327, us = 39362, us = 39399, us = 39433, us = 39471, us = 39506, us = 39544, us = 39578, us = 39614, us = 39651, us = 39686, us = 39724, us = 39759, us = 39793, us = 39831, us = 39866, us = 39903, us = 39938, us = 39973, us = 40008, us = 40045, us = 40080, us = 40118, us = 40163, us = 40198, us = 40235, us = 40270, us = 40308, us = 40342, us = 40377, us = 40417, us = 40451, us = 40489, us = 40524, us = 40559, us = 40593, us = 40631, us = 40666, us = 40704, us = 40739, us = 40773, us = 40811, us = 40846, us = 40884, us = 40918, us = 40953, us = 40991, us = 41025, us = 41063, us = 41098, us = 41133, us = 41168, us = 41205, us = 41240, us = 41278, us = 41313, us = 41347, us = 41387, us = 41421, us = 41459, us = 41494, us = 41529, us = 41566, us = 41601, us = 41639
while Done

it stay on row 109
 
Last edited:
i have try with Videodisplay program and it work fine, maybe is the VIDEO.BIN file the problem? there is a way to test it?
 
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