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SIO Wifi modem with esp8266


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#26 Stefan Both OFFLINE  

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Posted Sun Aug 20, 2017 4:13 PM

Slight confusion on the part number, this is the one you would be interested in: MAX3232 Datasheet (same as used in that "Connecting the Atari ST to the Internet" project). A MAX2322 is an entirely different animal.
 
- Michael


[My to do list: buy new glasses...]

Thank you...

Stefan

#27 mytek ONLINE  

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Posted Sun Aug 20, 2017 4:16 PM

[My to do list: buy new glasses...]

Thank you...

Stefan

 

While you are at it, can you please buy some for me as well? And also a new brain would be nice. Who am I kidding, how about a whole new body  :)

 

- Michael



#28 AtariGeezer ONLINE  

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Posted Sun Aug 20, 2017 4:23 PM

So then you would be thinking of a SIO connection?   I'm thinking of connecting to the 850 or PRC...

The SIO connection should still work with the schematic on the ST page using an R-Verter driver.



#29 Stefan Both OFFLINE  

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Posted Sun Aug 20, 2017 10:37 PM

Yes, I'm searching for a solution without
the need of an 850 (otherwise I have to
buy one first)
May you give me more information about the
R - verter driver?
Has it something to do with the Atarian
R device?

Stefan

#30 David_P OFFLINE  

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Posted Mon Aug 21, 2017 5:26 AM

R Verter was a commercial SIO to RS232 converter. Lots of plans for DIY versions available.

#31 Stefan Both OFFLINE  

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Posted Mon Aug 21, 2017 9:44 AM

R Verter was a commercial SIO to RS232 converter. Lots of plans for DIY versions available.

Thank you for the explanation.
May you have a look at the website?
http://atrey.karlin....tari/rvert.html
Is it the converter you mentioned?

do I need a special handler / driver when using the R Verter, and can I still daisy chain the diskdrive(s) ?
Stefan

Edited by Stefan Both, Mon Aug 21, 2017 10:03 AM.


#32 David_P OFFLINE  

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Posted Mon Aug 21, 2017 12:29 PM

There is a driver required. And it's a SIO dead end, unless you add a pass through connection. They are powered through the SIO line as well; if you have a heavily modded system you might overtax the Atari power supply.

#33 Stefan Both OFFLINE  

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Posted Mon Aug 21, 2017 12:39 PM

There is a driver required. And it's a SIO dead end, unless you add a pass through connection. They are powered through the SIO line as well; if you have a heavily modded system you might overtax the Atari power supply.

 

Sounds perfect !

Don't worry regarding the PSU. I have a replacement power supply.

2.5 Amps is probably enough.

I just found the schematics for the RVerter.

Guess, I give it a try.

 

Stefan



#34 Stefan Both OFFLINE  

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Posted Sun Sep 10, 2017 9:50 AM

It works on the "opposite"

Now I start building the RVerter

to bring it to my Atari ;-)

 

Stefan

Attached Thumbnails

  • connected.jpg
  • on Userport.jpg

Edited by Stefan Both, Sun Sep 10, 2017 9:54 AM.


#35 Stefan Both OFFLINE  

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Posted Sun Sep 10, 2017 2:18 PM

I attached a RVerter circuit diagram.
Can somebody confirm, SIO Pin DT.IN
is Pin 3 instead Pin 2 ?
Respectively, what is the correct pin
for P6 on the 74Ls00...
I just want to avoid expensive mistakes...

Thank you

Stefan

Attached Thumbnails

  • 20170910_221128_crop_653x1157.jpg

Edited by Stefan Both, Sun Sep 10, 2017 2:22 PM.


#36 venom4728a OFFLINE  

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Posted Sat Oct 28, 2017 7:49 AM

How is this project coming along?  I am really interested in getting an Atari wifi device,



#37 Stefan Both OFFLINE  

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Posted Sat Oct 28, 2017 3:05 PM

I still did not managed it.
Free time is short at the moment
and I could not figure out,
is the selfmade Rverter is faulty
or the ESP chip.

#38 mechanerd OFFLINE  

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Posted Sat Dec 9, 2017 11:21 AM

I attached a RVerter circuit diagram.
Can somebody confirm, SIO Pin DT.IN
is Pin 3 instead Pin 2 ?
Respectively, what is the correct pin
for P6 on the 74Ls00...
I just want to avoid expensive mistakes...

Thank you

Stefan

 

Did you get it to work?  I like really like this. I was thinking of snagging an 850, but now you got my attention to make a r-verter.
I vaguely remember it , does it install as a true R: handle with a binary?

Using the motor control line, would that toggle the 410 recorder on and off if you have play pressed?

Basically you have half a MIDI mate there.



#39 Stefan Both OFFLINE  

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Posted Sat Dec 9, 2017 12:18 PM

Both ESP chips work well... on a C64 the NodeMcu
and on my C128 the cheaper ESP-01 chip.
So the Hayes emulation works.
But...
It did not work on the Atari XL (yet).
I still couldn't find out, is the problem
related to the rverter, or am I to stupid
to operate the terminal software.

Stefan

#40 Mathy OFFLINE  

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Posted Sat Dec 9, 2017 5:52 PM

Hello Stefan

 

That's why you should come to an Atari 8 bit meeting like the NOMAM* or the Fujiama.  You can not imagine the amount of knowledge that comes together at meetings like that.  An example: LuckyBuck, the guy that's trying to collect and preserve all software for the Atari 8 bit computer that was written until somewhere in the middle of the 80's, had a fairly long to-do list when he visited the Fujiama for the first time last year.  He never would have imagined that he could have checked off all the items on his list by the end of the Fujiama.  But by the end of the 3.something day meeting, the list was completely checked off.

 

Sincerely

 

Mathy

 

*: To all others: No, you do not have to remind us that "NOMAM" reminds you of Al Bundy's "NO MA'AM".  We know.



#41 Stefan Both OFFLINE  

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Posted Sat Dec 9, 2017 6:13 PM

Hello Stefan
 
That's why you should come to an Atari 8 bit meeting like the NOMAM* or the Fujiama...


Dear Mathy,
you're right. I should visit a No'Maam meeting ;)

Stefan

#42 a8isa1 ONLINE  

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Posted Sun Jan 7, 2018 2:12 PM

I've had good success with NodeMCU dev boards using Strikelink and Zimodem 3.0 firmwares (links below).

 

Both firmwares work well.  Both have telnet modes. Zimodem has the ability to answer. (EDIT - I haven't tested this aspect).

 

I'm still playing at this.  I didn't add RS232 level conversion. I just connected the boards' TX, RX and GND lines (so far) to SIO.  Power is via USB Phone charger.

 

I've been using the bobverter driver on the Atari but I'm not sure how to add RVerter logic. Since I don't have a real R: interface set up and the device just sits on the SIO bus I can't do disk I/O unless I'm using my internal MyIDE (with SDX 4.49c beta).

 

Links

DIY C64 Wifi Modem

Zimodem 3.0


Edited by a8isa1, Sun Jan 7, 2018 2:21 PM.


#43 Stefan Both OFFLINE  

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Posted Sun Jan 7, 2018 11:43 PM

Thank you for your message.
It is the same firmware already running
on my C64.
So that is the next thing I will test. For a short moment, let's forget about RS232 Level shifting and tell me how the RVerter works.
At least with an ESP -12 it must be possible
to use just another (ESP)pin for a "software"
solution, instead the RVerter.
I guess the RVerter is "triggered" by another
SIO pin, if the information of the SIO bus line
belongs to the modem?

Stefan

Edited by Stefan Both, Sun Jan 7, 2018 11:43 PM.


#44 Stefan Both OFFLINE  

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Posted Mon Jan 8, 2018 9:27 AM

rverter1.jpg

 

What does Pin 9 and Pin 13 ?

Both are inputs, aren't they?

 

rverter2.jpg

 

Pin 13 isn´t in use at all here...

why? It is the "newer version" of the RVerter, isn´t it?

 

Whatever the program/firmware of the ESP-Chip does...

If I change all the funktions reading / writing at Tx / Rx

into something like this

if ((old funktion) && (Pin 8))

[where pin 8 is in fact a free GiPo pin of our choice

connected to motor pin 8]

it should replace the RVerter device ?!

 

Any help appreciated !

 

Stefan


Edited by Stefan Both, Mon Jan 8, 2018 9:28 AM.


#45 talanthalus OFFLINE  

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Posted Tue Jan 9, 2018 1:24 PM

Following this.  I was looking at options to get mine online potentially involving an 850 or ATR8000 via a Lantronix device or something in that realm, but this definitely looks interesting as well.  



#46 Stefan Both OFFLINE  

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Posted Tue Jan 9, 2018 2:36 PM

..., but this definitely looks interesting as well.  

Yes, I agree. But it would be much more promising
if I had more knowledge.
Stefan

#47 a8isa1 ONLINE  

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Posted Thu Jan 11, 2018 3:06 PM

Sorry Stefan, I don't have any answers to your questions.

 

To change the subject, I got Altirra to talk to my 800XL with the 'Zimodem'.  I'm running ICE-T at both ends and only sent a few characters but I'm happy. The Zimodem is in some monitor mode so it's not 2-way communication but I must be close.

 

I also updated the Zimodem firmware (to 3.3) live.  It's a nice convenience.


Edited by a8isa1, Thu Jan 11, 2018 3:22 PM.


#48 jeffpiep OFFLINE  

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Posted Tue Mar 20, 2018 9:05 PM

I've had good success with NodeMCU dev boards using Strikelink and Zimodem 3.0 firmwares (links below).

 

Both firmwares work well.  Both have telnet modes. Zimodem has the ability to answer. (EDIT - I haven't tested this aspect).

 

I'm still playing at this.  I didn't add RS232 level conversion. I just connected the boards' TX, RX and GND lines (so far) to SIO.  Power is via USB Phone charger.

 

I've been using the bobverter driver on the Atari but I'm not sure how to add RVerter logic. Since I don't have a real R: interface set up and the device just sits on the SIO bus I can't do disk I/O unless I'm using my internal MyIDE (with SDX 4.49c beta).

 

Links

DIY C64 Wifi Modem

Zimodem 3.0

 

"I just connected the boards' TX, RX and GND lines (so far) to SIO" 

 

Is your NodeMCU still working?

 

My understanding is the ESP8266 module is not 5V tolerant. But the Atari SIO TX circuit is an open drain output with a 4.7k pull up resistor and 100 ohm series resistor - that would limit current into the device. So perhaps things are fine because there's limited current (maybe a couple hundred microamps) being shunted by the internal ESD protection circuit. 

 

Thoughts?



#49 BillC OFFLINE  

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Posted Tue Mar 20, 2018 11:30 PM

Never mind


Edited by BillC, Tue Mar 20, 2018 11:34 PM.


#50 a8isa1 ONLINE  

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Posted Wed Mar 21, 2018 7:20 AM

 

"I just connected the boards' TX, RX and GND lines (so far) to SIO" 

 

Is your NodeMCU still working?

 

My understanding is the ESP8266 module is not 5V tolerant. But the Atari SIO TX circuit is an open drain output with a 4.7k pull up resistor and 100 ohm series resistor - that would limit current into the device. So perhaps things are fine because there's limited current (maybe a couple hundred microamps) being shunted by the internal ESD protection circuit. 

 

Thoughts?

Sounds reasonable but it's probably obvious that I don't know hardware.

 

Yep, both NodeMCUs have been working these past nine months. I can't say I use them very often on the Atari.  I still haven't repaired my svideo cable and ICE-T is virtually unusable via composite video.  I'll be more inclined to get it done if someone can patch The Learning Phone binary to work with the R-Verter driver.  Currently an 850 is required and I don't own one any longer.






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