TheBackShed.com

Forum Index : Microcontroller and PC projects : bricked?

Author

Message

markboston36
Regular Member

Joined: 27/10/2020
Location: United States
Posts: 76

Posted: 09:53pm 20 Nov 2020

Copy link to clipboard

Print this post

so i may have bricked my cmm2 not sure. i tried to flash the firmware it seeemed to go ok but when it tried to verify it it failed. now i can't get it to respond it won't load over serial and it won't boot either.

i have the retromax so ive tried sticking in the reset key but that did nothing.

CircuitGizmos

Guru

Joined: 08/09/2011
Location: United States
Posts: 1427

Posted: 09:57pm 20 Nov 2020

Copy link to clipboard

Print this post

Are you using the A-A cable?

Attach the A-A cable. Verify that the power is off.

Hold the firmware button and press the power button to power it up.

Does the cube programmer find the usb device at this point? (Also windows should make the "added device" noise)

Micromites and Maximites! - Beginning Maximite

markboston36
Regular Member

Joined: 27/10/2020
Location: United States
Posts: 76

Posted: 10:07pm 20 Nov 2020

Copy link to clipboard

Print this post

can i do this with the b to a cable? im getting a a to a cable tomorrow

CircuitGizmos

Guru

Joined: 08/09/2011
Location: United States
Posts: 1427

Posted: 10:12pm 20 Nov 2020

Copy link to clipboard

Print this post

Yes. With the B cube should find this:

Micromites and Maximites! - Beginning Maximite

JohnS
Guru

Joined: 18/11/2011
Location: United Kingdom
Posts: 4044

Posted: 10:31pm 20 Nov 2020

Copy link to clipboard

Print this post

markboston36 said so i may have bricked my cmm2 not sure. i tried to flash the firmware it seeemed to go ok but when it tried to verify it it failed. now i can't get it to respond it won't load over serial and it won't boot either.

i have the retromax so ive tried sticking in the reset key but that did nothing.

There's an internal boot system you can't overwrite so it's not bricked - so don't worry.

John
Edited 2020-11-21 08:33 by JohnS

TassyJim

Guru

Joined: 07/08/2011
Location: Australia
Posts: 6283

Posted: 12:40am 21 Nov 2020

Copy link to clipboard

Print this post

I am not sure what the reset does on the retromax.

To remove all your programs and settings from memory, short pin 40 to ground (pin 39) during startup.

That will leave the firmware in place and should give you the 'new out of the box' experience.

Doing the firmware update will not do any harm and you need to know how to do it eventually.

Note that the com port number will most likely not be the same as circuitgizmos 13

Using UART instead of USB is slow. A few minutes instead of a few seconds but both methods work equally well.

Jim

VK7JH
MMedit

markboston36
Regular Member

Joined: 27/10/2020
Location: United States
Posts: 76

Posted: 01:38am 21 Nov 2020

Copy link to clipboard

Print this post

the program does see it however it won't respond. im wondering if its still in firmware update mode and is looking for a connection?

markboston36
Regular Member

Joined: 27/10/2020
Location: United States
Posts: 76

Posted: 01:41am 21 Nov 2020

Copy link to clipboard

Print this post

error activating device KO please verify the boot mode configuration and check the serial port configuration. reset your device and try again.

thats the error cube is giving me.

markboston36
Regular Member

Joined: 27/10/2020
Location: United States
Posts: 76

Posted: 01:43am 21 Nov 2020

Copy link to clipboard

Print this post

CircuitGizmos said Are you using the A-A cable?

Attach the A-A cable. Verify that the power is off.

Hold the firmware button and press the power button to power it up.

Does the cube programmer find the usb device at this point? (Also windows should make the "added device" noise)

unfortunately currently this pc does not have speakers but i can see that cube is seeing it. i think its busy and for some reason won't get out of whatever mode its in. besides grounding pins can i use your reset button? i use the reset key but it didn't seem to do anything am i doing it wrong?

TassyJim

Guru

Joined: 07/08/2011
Location: Australia
Posts: 6283

Posted: 02:57am 21 Nov 2020

Copy link to clipboard

Print this post

IF the reset button is the same as the reset button on the standard CMM2, then no, it does the same as power cycling.
You need to ground pin 40

VK7JH
MMedit

markboston36
Regular Member

Joined: 27/10/2020
Location: United States
Posts: 76

Posted: 02:58am 21 Nov 2020

Copy link to clipboard

Print this post

TassyJim said IF the reset button is the same as the reset button on the standard CMM2, then no, it does the same as power cycling.
You need to ground pin 40

and being a total noob how do i do this?

TassyJim

Guru

Joined: 07/08/2011
Location: Australia
Posts: 6283

Posted: 03:43am 21 Nov 2020

Copy link to clipboard

Print this post

Page 15 of the manual describes the procedure.

I 'think' that pin 39/40 are on the end of the connector closest to the USB ports on the retromax.

BUT I AM ONLY GOING BY A PHOTO, so check your documentation.

I 'think' I can see a 39 on the silkscreen on the circuit board.

Don't short the pins unless you are sure you have the correct pins.
The other end of the connector has 3.3V and 5V so not a good idea to short them.

I use circuit board jumpers but the blade of a screwdriver will do the job.

Jim

VK7JH
MMedit

TassyJim

Guru

Joined: 07/08/2011
Location: Australia
Posts: 6283

Posted: 03:54am 21 Nov 2020

Copy link to clipboard

Print this post

markboston36 said error activating device KO please verify the boot mode configuration and check the serial port configuration. reset your device and try again.

thats the error cube is giving me.

That sounds like you weren't in firmware flash mode or didn't have the correct com port selected.

Connect the USB to your PC as normal.
With the CMM2 off, press the firmware update button (on the side) and hold it pressed while you turn the CMM2 on.
Release the firmware button.
Start Cube programmer and select the UART mode and choose your com port.
Click 'connect'

When you start the CMM2 in firmware update mode, nothing appears on the monitor.

Jim

VK7JH
MMedit

markboston36
Regular Member

Joined: 27/10/2020
Location: United States
Posts: 76

Posted: 04:31am 21 Nov 2020

Copy link to clipboard

Print this post

im using it over tty because i don't have a usb a cable it comes tomorrow.

tried grounding didn't work. it seems to be stuck on something im not getting any responce.

TassyJim

Guru

Joined: 07/08/2011
Location: Australia
Posts: 6283

Posted: 06:09am 21 Nov 2020

Copy link to clipboard

Print this post

markboston36 said im using it over tty because i don't have a usb a cable it comes tomorrow.

tried grounding didn't work. it seems to be stuck on something im not getting any responce.

IF grounding pin 40 while you turn it on didn't do anything, you do have to update the firmware.
When I said "Connect the USB to your PC as normal." I did want you to use the normal A-B USB cable that you do have.
Serial is OK to update with, just slow.

Connect the USB to your PC as normal.
With the CMM2 off, press the firmware update button (on the side) and hold it pressed while you turn the CMM2 on.
Release the firmware button.
Start Cube programmer and select the UART mode and choose your com port.
Click 'connect'

Jim
Edited 2020-11-21 16:10 by TassyJim

VK7JH
MMedit

markboston36
Regular Member

Joined: 27/10/2020
Location: United States
Posts: 76

Posted: 06:10pm 21 Nov 2020

Copy link to clipboard

Print this post

So using the usb a cable i was able to upload the new firmware. maybe usb b was too slow? not sure what the issue was.

TassyJim

Guru

Joined: 07/08/2011
Location: Australia
Posts: 6283

Posted: 09:57pm 21 Nov 2020

Copy link to clipboard

Print this post

Glad it's working again.
I rarely use the serial A-B cable for firmware updates. Too slow.
Perhaps Windows decided to have a nap partway through while you were doing the update.

The USB and A-A cable is definitely the way to go...

Jim

VK7JH
MMedit

markboston36
Regular Member

Joined: 27/10/2020
Location: United States
Posts: 76

Posted: 04:31am 22 Nov 2020

Copy link to clipboard

Print this post

not sure what happened. im not a big fan of winblows i should really put linux on this pc.

bigmik

Guru

Joined: 20/06/2011
Location: Australia
Posts: 2950

Posted: 08:26am 22 Nov 2020

Copy link to clipboard

Print this post

Hi Mark, All,

It is SUPER easy to make a USB A-A cable,

Just find two similar cables and cut them in half and join the 4 wires one to one,

ie
BLACK to BLACK
RED to RED
WHITE to WHITE
GREEN to GREEN

You probably don�t even have to solder the wires, although that would be my recommendation, just twist them together and insulate with tape.

It�s only used for 18s to flash then put away till the next time.

Regards,

Mick

Mick's uMite Stuff can be found >>> HERE (Kindly hosted by Dontronics) <<<

lizby
Guru

Joined: 17/05/2016
Location: United States
Posts: 3378

Posted: 12:45pm 22 Nov 2020

Copy link to clipboard

Print this post

Won't help immediately, but I use these:
https://www.ebay.com/itm/New-2-Pack-USB-2-0-A-Male-to-USB-A-Male-Adapter-Converter-Extender-Coupler/293482015491

PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed

Print this page

To reply to this topic, you need to log in.