MIDI IN overrun error

Testing/Troubleshooting
1

Hi everyone - just put together a midibox core and am having trouble uploading the MIOS.  Here’s what MIOS Studio is telling me

Starting upload of mios_v1_9f_pic18f4620.hex

Hex file contains code in MIOS range, forcing reboot!

Received Upload Request

Sending block 00000400-000004FF

Received Checksum: 54 - OK

Sending block 00000500-000005FF

Received Checksum: 5F - OK

Sending block 00000600-000006FF

Received Checksum: 01 - OK

Sending block 00000700-000007FF

Received Checksum: 36 - OK

Sending block 00000800-000008FF

Received Checksum: 2E - OK

Sending block 00000900-000009FF

Received Checksum: 31 - OK

Sending block 00000A00-00000AFF

Received Checksum: 19 - OK

Sending block 00000B00-00000BFF

Received error code 0B: MIDI IN Overrun Error

This was an expected error - please ignore!

Error: Received unexpected Upload Request

Sending block 00000B00-00000BFF

Received error code 0B: MIDI IN Overrun Error

Sending block 00000B00-00000BFF

Error: Received unexpected Upload Request

Sending block 00000B00-00000BFF

Received error code 0B: MIDI IN Overrun Error

Sending block 00000B00-00000BFF

Error: Received unexpected Upload Request

Sending block 00000B00-00000BFF

Received error code 0B: MIDI IN Overrun Error

Sending block 00000B00-00000BFF

Error: Received unexpected Upload Request

Sending block 00000B00-00000BFF

Received error code 0B: MIDI IN Overrun Error

Sending block 00000B00-00000BFF

Error: Received unexpected Upload Request

Sending block 00000B00-00000BFF

Received error code 0B: MIDI IN Overrun Error

Sending block 00000B00-00000BFF

Error: Received unexpected Upload Request

Sending block 00000B00-00000BFF

Received error code 0B: MIDI IN Overrun Error

Sending block 00000B00-00000BFF

Error: Received unexpected Upload Request

Sending block 00000B00-00000BFF

Received error code 0B: MIDI IN Overrun Error

Sending block 00000B00-00000BFF

Error: Received unexpected Upload Request

Sending block 00000B00-00000BFF

Received Checksum: 1C - OK

Sending block 00000C00-00000CFF

Received error code 0B: MIDI IN Overrun Error

Sending block 00000C00-00000CFF

Error: Received unexpected Upload Request

Sending block 00000C00-00000CFF

Received error code 0B: MIDI IN Overrun Error

Sending block 00000C00-00000CFF

Error: Received unexpected Upload Request

Sending block 00000C00-00000CFF

Received Checksum: 1C - Error

Sending block 00000C00-00000CFF

Received error code 0B: MIDI IN Overrun Error

Sending block 00000C00-00000CFF

Received error code 0B: MIDI IN Overrun Error

Sending block 00000C00-00000CFF

Received Checksum: 1C - Error

Sending block 00000C00-00000CFF

Received error code 0B: MIDI IN Overrun Error

Sending block 00000C00-00000CFF

Received error code 0B: MIDI IN Overrun Error

Sending block 00000C00-00000CFF

Error: Received unexpected Upload Request

Sending block 00000C00-00000CFF

Received error code 0B: MIDI IN Overrun Error

Sending block 00000C00-00000CFF

Received error code 0B: MIDI IN Overrun Error

Sending block 00000C00-00000CFF

Received Checksum: 1C - Error

Sending block 00000C00-00000CFF

Received error code 0B: MIDI IN Overrun Error

Sending block 00000C00-00000CFF

Received error code 0B: MIDI IN Overrun Error

Aborting after 16 errors

Is this an easy fix? or do I need to start digging.  No obvious soldering errors - all resistors are correct values and everything is oriented correctly.  Those are the things I know how to check.  Any advice?

2

Gday Jay welcome aboard.

Error: Received unexpected Upload Request

This usually indicates the core has rebooted. This could be a brownout error, or any number of soldering problems, or a problem with the PIC…

First, I’d like you to read the link in my signature… We need more information, and you need to read around a bit more so that you find all the troubleshooting guides, tests, and such.

You’re uploading MIOS so I’ll assume youve burned the PIC yourself (if you bought it from smash, it’d have mios on it already). I assume it’s a PIC18F4620 because that’s the file you’re uploading to it. I’ll assume you built the PCB yourself because you didn’t get the PIC from smash, I’ll assume you etched it from the v3 layout on ucapps.de, I’ll assume you already did the voltage tests before you inserted the PIC and after as per the ucapps page, I’ll asssume you tried the midi troubleshooting guide and it all passed… Uhm… Maybe I’m assuming too much. Maybe you could tell us :wink: While you’re at it why don’t you mention the midi interface you’re using (you can check the wiki and see if it’s one we already know has problems) and whether you used Smart Mode and Wait for Upload Request in MIOS Studio, and it’s the latest version (7b5)..

And anything else you can think of :slight_smile: Don’t be shy with the details, it makes it a lot easier and faster!

3

I bought from SMASH TV.  However, since I was getting SysEx Message: F0 00 00 7E 40 00 01 F7 every two seconds I thought I read somewhere I needed to upload the MiOS?  But let me poke around a bit more and I’ll get back to you.  Thanks for the link to the troubleshooting..

4

… and I also asume that you don’t have a PIC18F4620, or?

PICs from Smash have always MIOS on (they are tested before delivery from SmashTV).

Tell us, which PIC you use.

greets

Doc

5

I have a PIC18F4620 from SMASHTV which I’m sure did (does?) have MIOS on it (I guess that’s what the sticker was trying to tell me).  I’m an extremely ham-fisted complete bungler at electronic DIY projects and have no doubt whatsoever that all problems are caused by me.  Hopefully I haven’t messed up anything beyond repair yet - here’s what I know:

PIC18F4620

Board from SmashTV says CORE_R4D

I’m using a PC and my midi comes from an M-AUDIO 1010LT sound card.

MIDI out seems to be working since I get that message every two seconds.

Could it be I messed up the MIOS that was on there trying to write it again?  And I must have messed up something else anyway because I should be able to re-write it no problem, shouldn’t I?

Stryd_one kindly sent me looking for trouble shooting and I found a page of tests.  As soon as I work my way through those I’ll post the results.

I don’t know why I enjoy this stuff so much - I don’t really have a talent for it.

6

IT LIVES!  I went down the checklist -

TEST PROG1 - going to assume bootstrap loader is ok.

TEST CORE1 - Used the crystal in the kit, I think it’s good

TEST CORE2 - Don’t think this applied to the version of the board I’m using

TEST CORE3 - I’ve been over the board a couple times and I don’t see anything.  BUT! I’m not that confident in my soldering abilities so let’s not rule this one out.

TEST CORE4 - Getting power at all important points, just a smidgen over 5V.  I’m using an old wall power adapter for a scanner 9v DC.

TEST CORE5 - hmmmm.  No measurement on pin 12.  This is my problem? 

TEST CORE6 - Board mounted jacks.

TEST CORE7 - Polarity is good

TEST CORE8 - Resistor values are good.

TEST CORE9 - Cross link good.

TEST CORE10 - Not getting those kind of messages

TEST CORE11 - Using the cap with the kit.  Soldered properly (looks that way to me at least)

TEST OUT1 - LED flickers (that’s cool by the way)

TEST OUT2 - Don’t think this applies to my case.

TEST PC1 - What is MIDI-Ox?

TEST PC2 - I Don’t know where the bytes sent and bytes recieved count is on MIOS Studio, but sure seems to be working

TEST IN1 - all good

TEST IN2 - These are board mounted so I don’t think they can be backwards

TEST IN3 - continuous light

TEST IN4 - N/A

TEST IN5

That’s as far as I got because I went back and tweaked the solder on the socket for pin12 and it works like a charm!  MIOS and SEQ-v3 loaded.  awesome. 

7

Nice to hear, that you’ve worked it out!

TEST PC1 - What is MIDI-Ox?

hehe. That is the software we used to have before the great invention of MIOSstudio.  ;D

greets

Doc

8

Awesome ! Look forward to seeing pics and songs from the new box :slight_smile: