Firmware updates for the STM32/Gotek HxC floppy emulators !

[Jeff]

@ Jeff,

at v3.0.21.1a there is a problem with the OLED display mod. After selecting the file (by push-button or automatically), there are errors in the first line. Can you correct that please?

Unbenannt.jpg

And the blinking second LED is annoying with scrolling text...

Try the v3.0.21.2a i have just released. I have added some delays after the set address command. hope that this solve the issue.
(Note each register writing use now a 6 bytes i2c "burst" write sequence, hope that the mod can support this. Also : the bus frequency was reduced to 85kbits/s).

For the led, unfortunately there is no choice : disable the scrolling to avoid the blinking. this led is connected on the i2c line, I really don't know why the hardware was designed like this...

[Kingstener]

Unfortunately no change ...
The error also occurs only in the first line at the select. A scrolling font thereafter is error-free

Note each register writing use now a 6 bytes i2c "burst" write sequence, hope that the mod can support this

I think not - I have been using a finished I2C software module in the mod
What a pity, then I must stop the mod ...

[Jeff]

Unfortunately no change ...
The error also occurs only in the first line at the select. A scrolling font thereafter is error-free

I am not sure to understand. Can you make a video to show me ?

Note each register writing use now a 6 bytes i2c "burst" write sequence, hope that the mod can support this

I think not - I have been using a finished I2C software module in the mod
What a pity, then I must stop the mod ...

I think it does since most of text are correctly displayed. Probably a timing issue somewhere.
Where i can get this mod to test it ?

[Jeff]

have sent to you another firmware to test by email.

[Kingstener]

I'm sorry but have not received any email yet


Yes it's a timing problem, by the 6 bytes burst transmission ...
So far, each character has been transmitted as single paket, where the problems did not exist

Here is a temporary link to a video:
https://www.dropbox.com/s/8xw1r0yw3u3l8bt/SAM_5681.AVI

[Jeff]

I'm sorry but have not received any email yet

forwarded again.

Yes it's a timing problem, by the 6 bytes burst transmission ...
So far, each character has been transmitted as single paket, where the problems did not exist

i mean 6 bytes at the i2c side. 6 bytes are needed to write one character (1 quartet write need 3 ios change, 2 quartets are needed for one byte) . Before each io was change was done by a full i2c frame.

Here is a temporary link to a video:
https://www.dropbox.com/s/8xw1r0yw3u3l8bt/SAM_5681.AVI

When you select the image, please let the scroll begin, i want to see how it works.

[Kingstener]

forwarded again.

Now it arrived...
It works slightly better with manual selection so in about 80% - with automatic selection, the character dropouts remains

When you select the image, please let the scroll begin, i want to see how it works.

It do it right at the beginning of the video

I think this brings nothing here, the translation with google brings only confusion...

[Jeff]

forwarded again.

Now it arrived...
It works slightly better with manual selection so in about 80% - with automatic selection, the character dropouts remains

When you select the image, please let the scroll begin, i want to see how it works.

It do it right at the beginning of the video

no, i mean after the selection : the name should scroll too !

I think this brings nothing here, the translation with google brings only confusion...

that's exactly why i am asking videos. please make videos of the problems.

[Kingstener]

no, i mean after the selection : the name should scroll too !

Do not know what it should show more, there is no more ...

[Jeff]

no, i mean after the selection : the name should scroll too !

Do not know what it should show more, there is no more ...

Ok ! I have seen your new video. This look better.
I have send you a new firmware (version c). Have you tried it ?

[r4ar]

I installed this on my Gotek for use with my Casio FZ-10M and FZ-1 and it still is not saving fast enough. It is very, very slow. Too slow to use. It also still freezes after you format a disk image.

[Jeff]

I installed this on my Gotek for use with my Casio FZ-10M and FZ-1 and it still is not saving fast enough. It is very, very slow. Too slow to use. It also still freezes after you format a disk image.

On raw or HFE images ? And which usb stick are you using ? a fast one ?
EDIT : For raw files and the Casio FZ-10M support , this will be possible when i will add the 1KB sector support.

For the usb stick : take care of this, low cost and/or old usb stick can be very very slow at writing small packets. Which usb stick are you using exactly ?

another question : is reading have the same speed as the real floppy ? i have a doubt about the sector interleave into the hfe files used.

[Kingstener]

I have send you a new firmware (version c). Have you tried it ?

Yes, I answered your email, it has become worse! With manual selection now also lacks characters

[Jeff]

I have send you a new firmware (version c). Have you tried it ?

Yes, I answered your email, it has become worse! With manual selection now also lacks characters

i haven't received your email. anyway i have just sent another firmware.
Btw : how many time is needed for the uC do receive the i2c command and draw a character ? Is there some kind of buffer into your firmware ?

[Kingstener]

i haven't received your email. anyway i have just sent another firmware.
Btw : how many time is needed for the uC do receive the i2c command and draw a character ? Is there some kind of buffer into your firmware ?

Unfortunately also not much better, it is like a random generator - times it works, sometimes missing letters...

There is no buffer, the two nibble are received, added to a byte, and outputted with the write edge, if this is done, the akn for the write command goes out. So there are lot different timings, but so it remains synchronous and it gives no drop outs.
The exactly timing I have now no longer in the head - up to the v3.0.19.2a there has everything worked perfectly, think i will flash this and good is ....