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free-dmo / free-dmo-stm32

Endless freedom for D.MO 550 series label writer printer.
GNU General Public License v3.0
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power reset issue #20

Open jody-steele opened 1 year ago

jody-steele commented 1 year ago

i am having an issue with the 550 seeing labels as supported after a power off and back on. to get it back to seeing supported labels i have to click the reset button on the stm32. otherwise its working ok. maybe a flash issue but I have tried re-flashing and full erase but stil running into the issue.

also you listed 4.7k ohm res but I couldn't tell if they are half 1/2w or what. can you add more info on which 4.7k Ohm to use.

jody-steele commented 1 year ago

is there anything I need to do for programming the stm32 so that on power on its ready to go. I am using the 30256 bin file if that matters.

jody-steele commented 1 year ago

Any help would be great. every time the device powers on i have to hit the reset button the bluepill and then it works great. at least until the next power off and on.

freepdk commented 1 year ago

Hi,

It's hard to diagnose your problem.

The resistor just needs to be 4.7k with almost no wattage requirements. It is just a pull up. So really any 4.7k resistor you can find will work.

If your bluepill has startup problems you should check if you have a genuine STM32F103 or a cloned IC. Sometimes the clones do have different behavior which might or might not be tweeked with firmware or hardware modifications.

jody-steele commented 1 year ago

Issue is that a reset resolves the problem. So, I built the reset button onto the back of the printer. If I send a link to the Amazon item could u check it and see if it looks right?

Thank you

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From: freepdk @.> Sent: Sunday, October 9, 2022 6:53:24 AM To: free-dmo/free-dmo-stm32 @.> Cc: Jody Steele @.>; Author @.> Subject: Re: [free-dmo/free-dmo-stm32] power reset issue (Issue #20)

Hi,

It's hard to diagnose your problem.

The resistor just needs to be 4.7k with almost no wattage requirements. It is just a pull up. So really any 4.7k resistor you can find will work.

If your bluepill has startup problems you should check if your have a genuine STM32F103 or a clone. Sometimes the clones do have different behavior which might or might not be tweeked with firmware or hardware modifications.

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freepdk commented 1 year ago

A picture of your actual bluepill (most interesting the labeling on the main / biggest IC) would reveal the truth.

Here is a very nice writeup from keirf:

https://github.com/keirf/Greaseweazle/wiki/STM32-Fakes

The first picture is a "good one", all following ones are fakes with problems.