SdFat support

[anthonysavatar]

I made a start at adding SdFat support so I can use the built in SD card reader on the Teensy 3.6. So far jpeg loading seems to work fine but I am having trouble with playing avi files.

Here is a video of the cube demo followed by the video1 demo: www.youtube.com/watch?v=uj2jJqY6B58
A copy of the serial output that is on the screen is here: github.com/AnthonyDiGirolamo/gd2-lib-sdfat-testing/blob/master/GameduinoVideo1Teensy36/serial_output.txt

In MoviePlayer.begin() after initially filling the mediafifo everything would hang on GD.finish()
In MoviePlayer.loadsector() changing GD.wr_n(mf_base + wp, buf, 512); to
GD.cmd_memwrite(mf_base + wp, 512); GD.copy(buf, 512); caused the clip to start playing. I'm not sure why and don't understand the difference between GD.wr_n and GD.cmd_memwrite followed by GD.copy. Now it is crashing while trying to keep the mediafifo filled.

Any ideas?

Here are the changes made to the library: github.com/AnthonyDiGirolamo/gd2-lib/commit/6889576b640731f635f4507f323894680dd9632d

And the Arduino folder I used for testing: github.com/AnthonyDiGirolamo/gd2-lib-sdfat-testing

[lightcalamar]

Hi, Anthony. Good job even if it stays a little longer. I leave this link for Teensy to see if this can help.

Being a library of my partner for Teensy last year with the use of SDIO


Teensy with SDIO

Regards

[jamesbowman]

Hi Anthony,

Great... looking at your changes, the main thing is share the SPI interface. Calls GD.__end() and GD.resume() should tell the GD library to release the SPI interface.

So taking your current code for GD::load()

github.com/AnthonyDiGirolamo/gd2-lib/blob/6889576b640731f635f4507f323894680dd9632d/GD2.cpp#L1495-L1513

And copying from the Arduino code path:

github.com/AnthonyDiGirolamo/gd2-lib/blob/6889576b640731f635f4507f323894680dd9632d/GD2.cpp#L1532-L1551 

It should look like:


GD.__end();
File file;
if(!file.open(filename, O_READ)) {
 byte buf[512];
 int readsize;
 while ((readsize = file.read(buf, 512)) > 0) {
   readsize = (readsize + 3) & ~3; // force 32-bit alignment

   GD.resume();
   if (progress)
     (*progress)(r.offset, r.size);
   GD.copyram(buf, readsize);
   GDTR.stop();
 }
 GD.resume();
 return 1;
}
GD.resume();
return 0;

[tftlcdcyg]

Great job  anthonysavatar

James with that instructions the hanging continues

byte GDClass::load(const char *filename, void (*progress)(long, long)) {
#ifdef USE_SDFAT
GD.__end();
Reader r;
File file;
if(!file.open(filename, O_READ)) {
byte buf[512];
int readsize;
while ((readsize = file.read(buf, 512)) > 0) {
readsize = (readsize + 3) & ~3; // force 32-bit alignment

GD.resume();
if (progress)
(*progress)(r.offset, r.size);
GD.copyram(buf, readsize);
GDTR.stop();
}
GD.resume();
return 1;
}
GD.resume();
return 0;

Version for Riverdi´s TFT

PD: anthonysavatar; do you have an example to load jpg and assets with your improvements with the SdFat lib?

[lightcalamar]

With my Teensy 3.5 same problem;

[anthonysavatar]

Hi James,

Thx for the catch! I should have mentioned I'm using the built in sdcard reader on the Teensy 3.6 which is on an SDIO bus. So the FT810 is ok to have the SPI bus all to itself. I'll add the GD.resume and GD.__end calls back in and a #define option to disable them if using a separate card reader.

I should get some more time next week to try fixing the Avi playback. Still need to test/update sound loading as well.

[anthonysavatar]

Feb 14, 2018 18:50:02 GMT -8 tftlcdcyg said:

PD: anthonysavatar; do you have an example to load jpg and assets with your improvements with the SdFat lib?

Here is the basic jpeg loading example:

github.com/AnthonyDiGirolamo/gd2-lib-sdfat-testing/tree/master/GameduinoJpegTeensy36

The rotating cube demo also works:

github.com/AnthonyDiGirolamo/gd2-lib-sdfat-testing/tree/master/GameduinoCubeTeensy36

[lightcalamar]

Feb 16, 2018 0:26:45 GMT -8 anthonysavatar said:

I should get some more time next week to try fixing the Avi playback. Still need to test/update sound loading as well.

Hi Anthony, to play audio from AVI file and I wrote how to modify the library with the option OPT_SOUND.
This will be the link about modifying and playing audio from AVI;

gameduino2.proboards.com/thread/401/howto-gameduino-playback-avi-sound