ilmenator Posted April 13, 2003 Report Share Posted April 13, 2003 Hi all,the MIDI merger proposed by Thorsten is limited to 2 MIDI Ins. Is this limitation due to processing speed issues (reading: might be overcome by using a faster (18F452) processor), or is this due to hardware limitations?Regards, ilmenator Quote Link to comment Share on other sites More sharing options...
TK. Posted April 13, 2003 Report Share Posted April 13, 2003 Hi Ilmentator,both: hardware limitations and processing speed. Every software implemented MIDI In requires a pin which can trigger an interrupt, and this interrupt must be processed within ca. 1-10 uS, otherwise the serial data could get lost if multiple MIDI transmitters are sending data at the same time. The PIC shouldn't do anything else than listening to the ports. Therefore I would avoid more than one software implemented UART, this solution:http://www.midibox.org/cgi-bin/yabb/YaBB.cgi?board=concepts;action=display;num=1046743910is much better.Best Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
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