(true)MIDI USB Board

[Synthex]

Ok, im getting now. So i dont need to connect nothing in pin 1 an 2 in the cable, right?

Right

[yak]

Dear Synthex,

I've been reading about the midi-board with great interest. I'm working on a spare time project to merge 8 (eight) midi inputs to one output to be able to connect all my keyboards (and not just one). The obvious problem of course is the fact that the capacity of the output is insufficient in peak situations.
Do you think it would be possible to let your firmware run the serial interface at a multiple of the midi speed? Say 4x or maybe even 8x?

And if think you it would be possible, would you have the infinite greatness to produce a hexfile with the increased baudrate?

Your thoughts?

Kind regards,


Yak


P.S. Maybe this is also an idea to incorporate this in the Megadrum project since it can also reduce latency.

[lshutt]

Synthex, i just cant program the pic, i also made your board and im feeding this with a pc atx-font and still not work during the programing say that had a lot of erros? What should i do?

[Synthex]

Dear Synthex,

I've been reading about the midi-board with great interest. I'm working on a spare time project to merge 8 (eight) midi inputs to one output to be able to connect all my keyboards (and not just one). The obvious problem of course is the fact that the capacity of the output is insufficient in peak situations.
Do you think it would be possible to let your firmware run the serial interface at a multiple of the midi speed? Say 4x or maybe even 8x?

And if think you it would be possible, would you have the infinite greatness to produce a hexfile with the increased baudrate?

Your thoughts?

Sorry, but I have no time to do this.

[Synthex]

Synthex, i just cant program the pic, i also made your board and im feeding this with a pc atx-font and still not work during the programing say that had a lot of erros? What should i do?

Did you make a "forum search" for this problem ?

[lshutt]

No, but i did everything that was told to program it

[Synthex]

What is the problem ?

[lshutt]

This is what is show in the message box:

Info: Loading definitions for "PIC18F2550" from C:\Arquivos de programas\WinPic\devices.ini .
Info: Support for some newer PIC18F devices added by Martin v.d. Werff 2005
Couldn't find "devices\PIC18F2550.dev", please borrow/copy from MPLAB !
PIC18F: family='21'=4550, WriteLatch=32 bytes, EraseLatch=64 bytes .
Initialising PIC-Programmer: Success.
Testing: delay(500ms) took 0.50 seconds, timer_freq=3.5795 MHz ... ok
Programming...
Erasing ("bulk" or "chip") ...
Programming CODE, 0x000000..0x001862
Verifying CODE, 0x000000..0x001862
Verifying 0x000000..0x001862
Verify Error: 000000: read 00FFE3, wanted 00EF43, mask 00FFFF ==> diff=0010A0
Verify Error: 000002: read 00FFFF, wanted 00F00A, mask 00FFFF ==> diff=000FF5
Verify Error: 000008: read 00FFFF, wanted 00EFAF, mask 00FFFF ==> diff=001050
Verify Error: 00000A: read 00FFFF, wanted 00F00B, mask 00FFFF ==> diff=000FF4
More Verify Errors, unable to list all (total=3120)
Programming CONFIG, 0x300000..0x30000C
Verifying CONFIG, 0x300000..0x30000C
Verifying 0x300000..0x30000C
Verify Error: 300000: read 00FFDA, wanted 000E32, mask 00FFFF ==> diff=00F1E8
Verify Error: 300002: read 00FFFF, wanted 001E3F, mask 00FFFF ==> diff=00E1C0
Verify Error: 300004: read 00FFFF, wanted 0080FF, mask 00FFFF ==> diff=007F00
Verify Error: 300006: read 00FFFF, wanted 00FF85, mask 00FFFF ==> diff=00007A
More Verify Errors, unable to list all (total=7)
ERROR: Programming FAILED !

[Synthex]

Do you use a ICSP cable ?
Do you plug the USB power ?

[lshutt]

yes, im using the icsp cable, and i'm using a external power source