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Forum Index : Microcontroller and PC projects : Introducing the Colour Maximite 2
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| GregZone Senior Member  Joined: 22/05/2020 Location: New ZealandPosts: 114 |
Check. On constantly. Check. Card present is working. Fail! I even tried a 4th SD Card (a microSD card in the Adapter I used above). I've also thoroughly inspected all soldering again, and used some IPA to clean the header pins etc. The SD holder joints all appear good, but I might reflow these with some fresh solder as well. Then I think I might need to start on desoldering the 80-pin female headers to replace. Only other option I can think of is soldering patch wires from PC10, PC11, PC12 on the Waveshare board directly to the SD Socket pins (to bypass the header connection). I suppose the other possibilities are: a. The Waveshare board I received has a fault on one of these pins. b. There is a contact issue / fault in the SD Socket. |
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Chopperp Guru  Joined: 03/01/2018 Location: AustraliaPosts: 1094 |
Sorry OPTION SD TIMING CONSERVATIVE edit Totally confused........ Typed in above. OPTION LIST comes up with OPTION SD SPEED CONSERVATIVE Have to type in TIMING. Brian Edited 2020-06-16 14:25 by Chopperp ChopperP |
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| GregZone Senior Member Joined: 22/05/2020 Location: New ZealandPosts: 114 |
Thanks. I tried: OPTION SD TIMING CONSERVATIVE The CMM2 screen blanked and came back (restarted?). But... no joy. Same "Check Disk" / brief flashing red LED. I'm also curious about whether the OPTION settings are actually taking effect. eg. If I do: OPTION USBKEYBOARD US Then (after the screen blank / restart), I check: > OPTION LIST OPTION DISPLAY 50,100 OPTION USBKEYBOARD UK CURRENT VGA mode 800x600 RGB332 > ie. It doesn't appear that the US Keyboard option actually took effect? Also, there is no other OPTION listed by the LIST command! ie. Like the "OPTION SD SPEED CONSERVATIVE" you indicated appears on your OPTION LIST response? This is doing my head in! LOL Edited 2020-06-16 14:30 by GregZone |
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| Chopperp Guru Joined: 03/01/2018 Location: AustraliaPosts: 1094 |
The screen will go blank for the SD TIMING & comes up with the command prompt when the OPTION takes effect. option list OPTION DISPLAY 50,100 OPTION USBKEYBOARD US OPTION SD SPEED CONSERVATIVE OPTION RTC CALIBRATE -100 CURRENT VGA mode 800x600 RGB332 Mine does anyway Edited 2020-06-16 14:36 by Chopperp ChopperP |
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| GregZone Senior Member Joined: 22/05/2020 Location: New ZealandPosts: 114 |
Thanks. At least that confirms that part is normal. But, note I edited my post above noting that the OPTION changes don't appear to be retained / taking effect (based on the subsequent OPTION LIST). What might this indicate? |
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| Chopperp Guru Joined: 03/01/2018 Location: AustraliaPosts: 1094 |
Have you tried setting the keyboard to US to see if that takes? OPTION USBKEYBOARD US ChopperP |
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TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 6266 |
Try OPTION RESET One of the firmware updates require a clean out of the OPTION storage. After OPTION RESET, you can reset your keyboard and it should stick (provided your backup battery is working). Whenever you unplug the Waveshare module, any settings are lost so that 'should' have done the same as OPTION RESET but it is worth a try. Back to the SDcard. The likely culprits are either a solder joint on the card holder or a faulty via in one of the lines. With the Waveshare module removed, you should be ably to check for continuity from the header to the SDcard holder tags. Because it worked once, it is going to be something like that rather than permanent faults. Jim VK7JH MMedit |
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| GregZone Senior Member Joined: 22/05/2020 Location: New ZealandPosts: 114 |
I've done an OPTION RESET before. But here is the result of trying this sequence again: > OPTION RESET > OPTION LIST OPTION DISPLAY 50,100 OPTION USBKEYBOARD UK CURRENT VGA mode 800x600 RGB332 > OPTION USBKEYBOARD US > OPTION LIST OPTION DISPLAY 50,100 OPTION USBKEYBOARD UK CURRENT VGA mode 800x600 RGB332 > So this appears to confirm the OPTION's are not being retained? Okay, I've now confirmed continuity is good from the header pin sockets to the SDcard holder pins. Re-inserted Waveshare board. No joy. :( Yes, a good observation! But so far I'm not making any sense of this. Continuity all checking out good. Magnified visual inspection all good. But can't get rid of "Check Disk" error again. And OPTIONS don't appear to be taking effect. I think I need to take a break. :( |
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| GregZone Senior Member Joined: 22/05/2020 Location: New ZealandPosts: 114 |
Note, battery checks out Okay (2.983 volts), and the date / time is retained across power disconnects. So, I don't believe there is any RTC backup power / retention issue. |
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KeepIS Guru Joined: 13/10/2014 Location: AustraliaPosts: 1865 |
You might try these also: print MM.INFO$(SDCARD) print PIN("BAT") Just to see what mm basic reports on SD status and Backup battery voltage. The fact that RTC is retained and Keyboard is not indicates a deeper problem, I'd be getting that to work first. Have you reloaded the Firmware a second time just in case it's causing a problem? Mike. NANO Inverter: Full download - Only Hex Ver 8.1Ks |
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| GregZone Senior Member Joined: 22/05/2020 Location: New ZealandPosts: 114 |
Here's the output: > Colour Maximite 2 MMBasic Version 5.05.03b1j Copyright 2011-2020 Geoff Graham Copyright 2016-2020 Peter Mather > > print MM.INFO$(SDCARD) Unused > print PIN("BAT") 3.043442435 > I have reloaded the firmware twice. First was the 5.05.02 version. Then, I tried again (ealier today) with the latest 5.05.03b1j (as can be seen above). ps. I've searched for what "Unused" means, in relation to the SDCARD, but I haven't found anything explaining this? Edited 2020-06-16 15:54 by GregZone |
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| TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 6266 |
Latest beta version is m http://geoffg.net/Downloads/Maximite/CMM2_Beta.zip With no SDcard and then with a card present should be: You might have to wait for Peter to wake up to give his opinion on "Unused" This probably should be on the Bugs thread instead of here. Jim VK7JH MMedit |
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| Chopperp Guru Joined: 03/01/2018 Location: AustraliaPosts: 1094 |
We are up to b1m here Jim beat me to it Edited 2020-06-16 16:02 by Chopperp ChopperP |
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| KeepIS Guru Joined: 13/10/2014 Location: AustraliaPosts: 1865 |
Unused once mean not allocated, as in, no pins allocated and free for use. Something really strange going on there. Like the others I'm also running 1m version. NANO Inverter: Full download - Only Hex Ver 8.1Ks |
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| GregZone Senior Member Joined: 22/05/2020 Location: New ZealandPosts: 114 |
I've now reloaded with latest b1m firmware. Results as below. ie. OPTION changes are not retained. SDCard still "Check Disk", correctly showing "Not present" when ejected, but "Unused" when inserted. > Colour Maximite 2 MMBasic Version 5.05.03b1m Copyright 2011-2020 Geoff Graham Copyright 2016-2020 Peter Mather > OPTION RESET > OPTION LIST OPTION DISPLAY 50,100 OPTION USBKEYBOARD UK CURRENT VGA mode 800x600 RGB332 > OPTION USBKEYBOARD US > OPTION LIST OPTION DISPLAY 50,100 OPTION USBKEYBOARD UK CURRENT VGA mode 800x600 RGB332 > print MM.INFO$(SDCARD) Not present > print MM.INFO$(SDCARD) Unused > ps. @TassyJim I didn't post in Bugs thread as I'm assuming this is not a Bug as such, just a call for some advice on my potentially faulty CMM2 that I just received. I've also assumed that a whole new topic thread wasn't appropriate? |
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| TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 6266 |
Next step. Remove the RTC battery. Turn everything off and give it a few minutes. Leave the battery out for now. Put the Battery jumper on the waveshare board. Its the one closest to the power switch (front right looking from the front). When you start up, you should get the request to select your keyboard and set the time. See what happens with the OPTIONs. Reset using the reset button on the waveshare board while keeping power on. Jim VK7JH MMedit |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 10189 |
Unused means the SDcard is physically plugged (CD is valid) in but hasn't yet been accessed. One issue that is documented in the construction manual relates to the soldering of the SDcard socket. If the back of the socket is not held tightly to the PCB when soldered it is possible that it may not sit tight to the board. In this case the connections look fine but there isn't sufficient downward pressure on the card when inserted to contact with the connectors. I found this when re-using a card slot on a new PCB. I hadn't cleaned off the case tabs sufficiently and the SD card didn't work. I reheated the tabs one at a time while pressing down on the socket and voila it worked. Edited 2020-06-16 17:23 by matherp |
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| TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 6266 |
I got "unused" when I removed the power lead to my breadboard setup. reconnect the VCC lead any "Ready" Same thing happens when I disconnect the Clock lead. There is one of the tracks not getting where it belongs or a faulty card holder. I would try resoldering the card holder pins next. Jim VK7JH MMedit |
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| GregZone Senior Member Joined: 22/05/2020 Location: New ZealandPosts: 114 |
Okay. I've now done all that was suggested in prior posts. - Battery removed (and power removed for several minutes) - VBat Jumper added to Waveshare board No change to symptoms. - SDCard holder resoldered and check to be flat / flush with PCB (already was). - Any other possible suspect joints resoldered. No change to symptoms. One final note. See below log, which interestingly shows the original power-up US keyboard selection retained. But after another OPTION setting (SD TIMING), the OPTION LIST shows the Keyboard reverted to UK !!! WTF? Colour Maximite 2 MMBasic Version 5.05.03b1m Copyright 2011-2020 Geoff Graham Copyright 2016-2020 Peter Mather Initial setup - all parameters can be changed later Keyboard type: 1=UK, 2=US, 3=DE ? 2 Enter time (24hr clock) HH:MM:SS ? 20:00:30 Colour Maximite 2YY ? 16/06/20 MMBasic Version 5.05.03b1m Copyright 2011-2020 Geoff Graham Copyright 2016-2020 Peter Mather > option list OPTION DISPLAY 50,100 OPTION USBKEYBOARD US CURRENT VGA mode 800x600 RGB332 > option sd timing conservative > option list OPTION DISPLAY 50,100 OPTION USBKEYBOARD UK CURRENT VGA mode 800x600 RGB332 > |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 10189 |
Sounds like you have a faulty board or that there is some sort of issue with the battery supply. I think the SDcard issue is a symptom of a greater malaise. The underlying issue is that the unit is not storing options correctly. Options are stored in a bit of battery backed RAM in the RTC. If this isn't working then it is unlikely that the unit can be used successfully. If it was my board my next step would be to use a heat gun on the processor chip until all the solder melts and ensure that all the pin connections are good. I would then repeat on the RTC and processor crystals and caps and the SDRAM. Just to confirm, you have removed all jumpers from the Waveshare? Where did you buy the motherboard and Waveshare? Perhaps the vendor can help |
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