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Forum Index : Microcontroller and PC projects : ArmmiteF4 - Have I Partially Cooked It?
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| Andrew_G Guru  Joined: 18/10/2016 Location: AustraliaPosts: 840 |
A gentle cry for help if I may? I have a couple of ArmmiteF4s, with the standard 3.2"LCD (and a 9" Eastrising LCD - still in its box). In trying out various flat cables from the 32 pin connector to the 3.2" LCD (to better access the pins) it has stopped working (no pfhut, no smoke but no work). (It is quite likely that I have misconnected something within the 32 pin regime). If I plug it in to a USB port, no noise from the PC and Device Manager no longer sees it. If I connect it to the STM32 boot loader (BT0 jumper in) it sees the USB and lets me download and verify the firmware. But with the BT0 to 3.3 jumper removed it doesn't see the F4 as a USB. BUT if I use the Serial Console it sees it on a USB, MMEdit downloads MMBasic programs and the LCD panel works fine, including touch. Is there any way I can reinvigorate the USB connection or do I just get used to using the Serial Console on this unit? Many thanks, Andrew |
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disco4now Guru Joined: 18/12/2014 Location: AustraliaPosts: 844 |
I presume you have done OPTION RESET or KEY1 down at power up to get it back to default. If PE4 had a permanent GND then it would always startup on the Serial Console. What does OPTION LIST say when connected to the serial console? Does OPTION RESET make the serial console go away, but not give the USB console. Regards Gerry Edited 2021-04-05 19:53 by disco4now Latest F4 Latest H7 |
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| Andrew_G Guru Joined: 18/10/2016 Location: AustraliaPosts: 840 |
Gerry, Thank you, thank you, thank you (if that is enough . . .). Key1 at power up did it! (I believe that I had already tried that but obviously I hadn't got the coordination right - very satisfying to hear the PC warble). I haven't fully tested it but Device Manager and MMEdit now see it and the LCD is working so I'm pretty happy it is now good. Clearly my playing around has upset it but not terminally. Thanks again, Andrew |
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