SysEx timeouts

[dmitri]

Just to explain MDM logic when sending Sysex to MegaDrum.

1. First MDM sends a single Sysex with a config item (Misc settings, one input, one 3rg zone and etc).
2. Then MDM sends a Sysex config request for the same item.
3. If it receives a response from MegaDrum for the same item, MDM compares it to the config which was sent to MegaDrum. If they match, then it is flagged as OK.
4. If it receives a response from MegaDrum for the same item, MDM compares it to the config which was sent to MegaDrum. If they match, then it is flagged as Sysex Error.
5. If it doesn't receive a response from MegaDrum within a timeout, then MegaDrum flags a Sysex Timeout, even if it was just for one item out of the whole lot of config items.

[halifax30]

Hi Dmitri,
This is very useful info, thank you. I'm determined to understand your code and perhaps add logging messages and see where the process fails.
Until then, can you tell me how long delay do you regard as 'too long' and flag it as a timeout? Is it hard-coded? I'm asking because sometimes I get a timeout even when I send only a single pad, and it happens after one second, or even less. Is the timeout so short?
I haven't even mentioned, yet, but after I upgraded from firmware 20151104 to 20151207 I again start to get timeouts for single Pads.

[dmitri]

I don't have code with me at the moment. If I remember right timeout is hard coded but I don't remember the value. This must be Windows 10 specific because I hardly ever get timeouts on Mac OS.

[angr77]

Hi!

I gave it a go on my Windows 10 system (Surface Pro 3) with MDM 20151104 and FW 20151207. I get system timeouts at 96% when doing send all and if the "ConfignamesEN" checkbox is unchecked...If I enable the checkbox the errors goes away. (The checkbox enables the custom config names on each slot - which is a good function..)

Best Regards

ANGR77

[halifax30]

Thanks for doing the test. Unfortunately, I did not have luck with the "ConfignamesEN" checkbox. I tried to do SendAll several times both with checked and unchecked checkbox, but I always got a timeout.

[angr77]

I did the same test on my MacBook PRO with el capitan installed..and i get system time-outs if not the ConfigNamesEN is checked.

Best Regards

Angr77

[dmitri]

I just tested MDM on my daughter's laptop with Windows 10 and there were no timeouts doing GetAll or SendAll.