Сlock generator

Question

Сlock generator

Elsta opened this issue 5 years ago · comments

Hello BotoX!
Thank you for the work done and interesting project! Will this project work correctly if you connect external oscillator 16Mhz to the controller and change the fusebit without changing the m365 firmware?

BotoX · Answer 1 · Mon Jun 03 2019 04:58:06 GMT+0800 (China Standard Time)

Yes it will if you change this firmware to use 115200 baud and change F_CPU to 16M.
Also need a different bootloader bin: https://t.me/XiaomiM365Hacking/39862

IonicEV · Answer 2 · Wed Dec 25 2019 01:04:33 GMT+0800 (China Standard Time)

Yes it will if you change this firmware to use 115200 baud and change F_CPU to 16M.
Also need a different bootloader bin: https://t.me/XiaomiM365Hacking/39862

I found later posts from "White Power" claiming it did not work out:
"avrdude : verification error: content mismatch at byte 0x7e00"

Was it the reason you rolled back the 115200bps bootloader?

Elsta · Answer 3 · Wed Dec 25 2019 12:10:42 GMT+0800 (China Standard Time)

It didn’t work for me at 115200 baud. I used both quartz and a generator with and without a bootloader. Best regargs! вт, 24 дек. 2019 г., 20:04 IonicEV <notifications@github.com>:

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Yes it will if you change this firmware to use 115200 baud and change F_CPU to 16M. Also need a different bootloader bin: https://t.me/XiaomiM365Hacking/39862 I found later posts from "White Power" claiming it did not worked out as "avrdude : verification error: content mismatch at byte 0x7e00" Was it the reason you rolled back the 115200bps bootloader? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#12?email_source=notifications&email_token=AMFNKXNEQAK4FTPVJGFGNCTQ2I6KDA5CNFSM4HSDKKLKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEHTOE3I#issuecomment-568779373>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AMFNKXP2HET2RUSNWPSV4CTQ2I6KDANCNFSM4HSDKKLA> .

BotoX · Answer 4 · Wed Dec 25 2019 21:36:51 GMT+0800 (China Standard Time)

The quarz on the V1.6 BMS is 8MHz.

Elsta · Answer 5 · Wed Dec 25 2019 22:07:43 GMT+0800 (China Standard Time)

I don’t quite understand what you want to know from me. I tried to run BMS v1.5 at a frequency of 16 MHz with a voltage of m328p 3.3v. Did not work out. With an external 8 Mhz quartz, everything worked, but at a low speed not corresponding to 115200 baud. Best regargs! ср, 25 дек. 2019 г., 16:36 BotoX <notifications@github.com>:

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The quarz on the V1.6 BMS is 8MHz. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#12?email_source=notifications&email_token=AMFNKXLISEC3GW73WDLLJNTQ2NOXJA5CNFSM4HSDKKLKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEHULXJQ#issuecomment-568900518>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AMFNKXMYIESEZYI2UPE4IPLQ2NOXJANCNFSM4HSDKKLA> .

IonicEV · Answer 6 · Wed Dec 25 2019 22:09:39 GMT+0800 (China Standard Time)

The quarz on the V1.6 BMS is 8MHz.

Thanks! I am looking forward to program the BMS soon.

IonicEV · Answer 7 · Wed Dec 25 2019 22:12:37 GMT+0800 (China Standard Time)

@Elsta Sorry for the confusion, I was referring to BotoX earlier commit. Thanks for your clarification too.

BotoX · Answer 8 · Thu Dec 26 2019 08:05:20 GMT+0800 (China Standard Time)

You can only run this BMS with 115200 baud if you use a 16 MHz quarz OR calibrate it with OSCCAL so that you can do 115200 baud with 8 MHz.
See: https://codebender.cc/sketch:186647#OSCCAL.ino

Elsta · Answer 9 · Thu Dec 26 2019 13:46:18 GMT+0800 (China Standard Time)

thanks, I will try to play with osccal Best regargs! чт, 26 дек. 2019 г., 3:05 BotoX <notifications@github.com>:

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You can only run this BMS with 115200 baud if you use a 16 MHz quarz OR calibrate it with OSCCAL so that you can do 115200 baud with 8 MHz. See: https://codebender.cc/sketch:186647#OSCCAL.ino — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#12?email_source=notifications&email_token=AMFNKXJOQ5SQXG2SLITSNTDQ2PYMDA5CNFSM4HSDKKLKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEHUVH4I#issuecomment-568939505>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AMFNKXPMAMBY55SCXQTGLJDQ2PYMDANCNFSM4HSDKKLA> .