MIOS32 progress

OneLittleFonzie · January 28, 2010, 9:16pm

I just started building Midibox stuff. The MIOS32 version Midibox 64 is my goal.

Now that I’m testing a bit with programming I realize that for instance DOUT doesn’t work. Is that right? How far is the STM32 version project.

If necessary I could contribute.

Thanks

Ron

philetaylor · January 28, 2010, 9:24pm

AFAIK, almost all of MIOS8 is currently working in MIOS32 (and quite a lot more!) DIN/DOUT are certainly working (or the MB_SEQ_V4 wouldn’t be usable!)

Cheers

Phil

OneLittleFonzie · January 29, 2010, 6:50am

Thanks for the quick reply

So, I’ve used the example “apps\tutorials\009_dout” should work. In my case it doesn. I’ve connected 1 led for now and nothing happens. When it starts up the led lits while booting as well as the activity led on the board.

I’ve added this piece in de APP_Init and the APP_MIDI_NotifyPackage event handler

u8 i;

for i = 0 ; i < 127 ; i++ )

{

MIOS32_DOUT_PinSet(i, 1);

}

Nothing happens when I press a button, also the activity led doesn’t flip while MIOS32_BOARD_LED_Set(1, ~MIOS32_BOARD_LED_Get()); is in the handler body.

When I add:

if( midi_package.type == NoteOn && midi_package.chn == Chn1 && midi_package.velocity > 0 )

MIOS32_MIDI_SendCC(port, Chn1, 1, midi_package.velocity);

I receive something back from the MIOS32 in my midi monitor so that handler is activited.

What is happening (or not).

Thanks very much

Ron

philetaylor · January 29, 2010, 9:38am

Strange… It should work.

I assume you are using a DOUTx4 module and have the LED connected between the output and ground as per this diagram

I am at work at the moment so I can’t try it myself!

Cheers

Phil

OneLittleFonzie · January 29, 2010, 10:16am

It sure is strange. It’s exactly like on the diagram

I’m going to buy a LCD 4*20 this afternoon. This way I can check what the MIOS32_DOUT_PinSet method returns.

I can imagine that I did something wrong but I’m more surprised about the activity led on the board. It does exactly what is needs to do but it doesn’t toggle when I receive incoming midi data. The handler works because I can return midi messages which I see in the midi monitor

strange, strange, strange

Thanks

Ron

philetaylor · January 29, 2010, 12:40pm

You can also use MIOS32_MIDI_SendDebugMessage() to send messages to the MIOSStudio Terminal window if you haven’t got an LCD.

Cheers

Phil

OneLittleFonzie · January 29, 2010, 2:21pm

I quickly tried that yesterday evening. I’ll read the documentation of MIOS studio and try again.

Thanks very much for your time. I’ll come back on this.

Regards

Ron

T.K · January 29, 2010, 9:23pm

One possible reason (beside of bad solderings or wrong connections between MBHP_CORE_STM32 and MBHP_DOUTX4 module) is that the 220 Ohm Pull-up resistor array R31 is not mounted.

You can test this by measuring the voltage between ground and pin J8:SO, J8:SC, J8:RC when the DOUT module is *not* connected.

Note that due to the AC waveforms generated by the SPI transfers you won’t measure exact DC values with a common multimeter, but they could give you some hints.

E.g., J8:SO should be 0V when your application sends 0 to all DOUT pins, and it should be ca. 5V when you application sends all-1

J8:SC should be between 4V..5V (each mS this pin sends a burst of 1 MHz for ca. 300 uS)

J8:RC should be ca. 5V (only short pulses sent each mS)

If you always read 0V, the pins are probably floating, accordingly the pull-ups are not connected.

Btw: the usage of MIOS32_MIDI_SendDebugMessage() is really recommented for debugging, it’s more useful than a LCD.

See also http://svnmios.midibox.org/listing.php?repname=svn.mios32&path=%2Ftrunk%2Fapps%2Ftutorials%2F003_debug_messages%2F

Best Regards, Thorsten.

OneLittleFonzie · January 29, 2010, 10:24pm

Wow

That’s very impressing so much service

I guess it’s because I missed the 3.3/5 volt selector I missed (J24/J25/J26)

Going to try tomorrow morning

Thanks very much

Ron

OneLittleFonzie · January 30, 2010, 8:48pm

Well, the jumpers were the problem. Now it seems uploading is suddenly a problem

Received Checksum: 00 - OK

Starting upload of project.hex

Requesting reboot…

Waiting for upload request…

Received Checksum: 00 - OK

Received Upload Request

Received Checksum: 00 - OK