Midi timing and bit-banging

[possan]

Hi this must be considered quite off-topic but this seems to be the most active midi and pic forum...

The problem: I'm using a 16f84 @ 4mhz and i am trying to do some midi message transfer by bitbanging, but i cant seem to get it to work, my midimonitor keeps displaying multiple messages instead of one single message, ie. timing must be wrong, and according to the pages i found you're supposed to have 32uS delay between bits transferred, one start and one stopbit, levels inverted, 1=idle, 0=bit on etc..

So, anyone out there with some working really simple code in asm, jal or c that sends some midi messages using a 16f84?

The closest source i managed to find was in mplab asm and for 10mhz.. i'd really like a 4mhz one for reference.

[TK.]

Hi,

you could use the inbuild simulator of MPLAB in order to determine the delay (or number of cycles) between each sent bit. At 4 MHz it must be exactly 32 cycles, not more, not less...

Best Regards, Thorsten.