Jump to content

repetto74

Members
  • Content Count

    266
  • Joined

  • Last visited

Posts posted by repetto74


  1. The Coleco will usually crash when trying to load a game stored into the first eprom. I'll get a garbled screen like this one enclosed or a freeze on the cart menu. 

    Pressing the reset will either load the same game stored into a certain position on the eprom (DK something) or show up the message to insert a cart into the module.

     

     

    image.thumb.png.10050ef529e6356ba30b7b816447354c.png

     


  2. If I swap the two eproms then the Coleco will load the game available on the first memory bank of the second eprom. As the menu is on the first eprom then i can only load this unique game but indeed it loads.

     

    It is maybe irrelevant but worth to mention. The 74LS688DW I have installed is marked 74LS688 and the package was not the good one (smaller then the pad positions on the pcb) but I managed to solder it properly without any shorts. Question is are pinouts different from one package to another?


  3. Hi 5-11,

    I have built this cart based on the gerber and schematics available for it. There are no bypass capacitors.

    I have made some extra testings after finally replacing the loose socket with a good one. Basically all games stored in the second eprom are working fine when selected from the menu (the pcb is making use of two M27C801 of 1024k each). If I select a game stored on the first eprom then the Coleco will either crash or load the prompt screen asking to insert a cart and reset will just do nothing. I have checked the first eprom with the programmer and it verified good with the original bin.

    Here is the schematic of this project.

    image.thumb.png.28a8681d9b0a7719b84e11e75c3e1a99.png


  4. Hi Guys,

     

    I have built this multicart and used the two bin files to program the two eproms. I can get to the menu but the loading is very erratic. Sometimes the game loaded is not the one selected from menu and other times it crashes.

    I have I think an issue with a socket where the eprom is not fitting tight but is loose. 

    Can someone let me know what is the value of the pull-up resistor? I put a 10K but not sure this is the correct value to use.

     

    Thanks and great project for our beloved Coleco :-)!!


  5. 12 hours ago, Al_Nafuur said:

    So it looks like the STM32 can talk to the ESP8266 but the response line is broken.

     

    You might try and solder a wire between these two pins (ESP8266 Tx -> STM32 Rx) or maybe you should first check all soldering related to these two pins.

    grafik.thumb.png.3d8d9192763bdd8bfd67bf962824bf1f.png

     

    That did the trick! Soldering a jumper wire has solved. I can connect now to the wifi and set-up the Plus Store account. I cannot really explain why there is a broken line here, I have checked the continuity and it looked fine. Bad PCB? Anyway it works that's the most important :-D.

    Thank you for your support, this cart is ra really nice piece of hardware :-). Let's put it in a cartridge shell now!

    IMG_2386.JPG

    • Like 4

  6. 1 minute ago, Al_Nafuur said:

    So it looks like the STM32 can talk to the ESP8266 but the response line is broken.

     

    You might try and solder a wire between these two pins (ESP8266 Tx -> STM32 Rx)

    grafik.thumb.png.3d8d9192763bdd8bfd67bf962824bf1f.png

     

    OK I'll try and keep you posted tomorrow 🙂. Not so much time tonight to do this test.


  7. 8 hours ago, Al_Nafuur said:

    @repetto74

    After thinking about it a bit, it only proves that the Tx to Rx line from the STM to the ESP works but not that the connection back from the ESP to the STM works.

     

    Does the LED of the ESP8266 blinks shortly if you start a "Scan For WiFi Access Points" ?

     

    Yes a short blink more or less 1 second but then I get the "timeout" message.

    I have tried a complete reset of the module, disconnected the board and reconnected but no changes when I scan for networks.

    The SSID is visible only after enabling it from the "Manager Portal" menu and my PC can connect to it but http://192.168.4.1 will just hang on, no router menu. This module looks completely silent.

    I'll check with microscope of any evidence of bad solder joint of components on the module. The board is working and the continuity on the module pins are ok.


  8. 6 minutes ago, Al_Nafuur said:

    @repetto74

    After thinking about it a bit, it only proves that the Tx to Rx line from the STM to the ESP works but not that the connection back from the ESP to the STM works.

     

    Does the LED of the ESP8266 blinks shortly if you start a "Scan For WiFi Access Points" ?

     

    I recall activity of the blue led blinking a few times. I will confirm this evening once I hook-up everything and test again 🙂


  9. 1 hour ago, Al_Nafuur said:

    If so, the STM32 and the WiFi module can talk to each other and your soldering is (most likely) correct.

     

    It might be that the ESP8266 has the wrong firmware, is defect or misconfigured. To check if it is just misconfigured you can use the "Delete WiFi Connections" function in the WiFi menu, this function indeed initiates a factory reset to the ESP8266.

     

    After using this function you have to reboot the PlusCart before you try to connect to a WiFi network. I recommend to remove the PlusCart from the 2600 and plugging it back to make sure the ESP8266 really powers down.

     

     

    Hi Al_Nafuur,

    Thanks I will test everything this late evening and get back hopefully with some good news 🙂

     


  10. 8 hours ago, Al_Nafuur said:

    Is the "Pluscart+" SSID always visible even when the "Start WiFi Manager Portal" is Not active?

     

    Have to check this. I will let you once done but I may recall that the SSID was only available after the Manager Portal was activated in the menu.

    I'll confirm later.


  11. 1 minute ago, Andrew Davie said:

    It's a menu option on the PlusCart itself.

    Setup/Display Preferences/TV Mode

    Also, you might like to checkout the available fonts, also under Display Preferences

     

    Ok thanks good to know :-). I will give a try. Need to play a little bit with the menu and options. I am focusing on this non working wifi module at the moment.


  12. 5 minutes ago, Andrew Davie said:

    You do not need to flash the ESP8266. It comes pre-flashed.

    It sounds highly suspect to me. I'd be checking the soldering on that module, and perhaps thinking about replacing it.

    Also, as an aside, my carts work fine with v1.0.0 of the module sourced from China, but they do not firmware-update correctly.

    But, seeing no version at all suggests to me that your ESP8266 is non-functional.

    Let's see what @Al_Nafuur says.

    I would like to check the continuity of each of the 8 pins of the module. Some are easy to spot with the visible traces on the board and some I do not really know where to check.

    I will check also for any bad soldering on the module components. Luckily I have a microscope and some tooling for smd components.


  13. Ok back with some more infos.

    The offline roms works perfectly so the board is ok. 

    Firmware version of the wifi does not show a version number.

    Last try will be to connect via WPS but I am really wondering if this module is working at this stage. 

    Any guide on how to check compatibility of this module with my wifi network?

     

    PS : starting maybe to understand. Do I need to flash the ESP8266 with a firmware or is it already programmed? 


  14. Ok back with some more infos.

    The offline roms works perfectly so the board is ok. 

    Firmware version of the wifi does not show a version number.

    Last try will be to connect via WPS but I am really wondering if this module is working at this stage. 

    Any guide on how to check compatibility of this module with my wifi network?

    pluscart_screenshot.jpg


  15. 50 minutes ago, Al_Nafuur said:

    You can check the firmware version of the WiFi module at the "Setup" -> "System Info" menu.

     

    If the PlusCart boots with your Atari and you can see and navigate the menus, then the soldering for the STM board should be fine.

     

    That's not a good sign if a WiFi scan has no result. Have you connected a ESP8266 with the AT-Command firmware to your network before?

     

    This should work, because it does not include the WiFi module.

    To flash the tar archive with the STM32CubeProgrammer you have to change the extension to ".bin". After manually flashing the TAR archive you have to use the "Setup" -> "Search for Offline ROMs" function.

     

    I have never used those ESP8266 Wifi modules before. I do not know what is their range but normally in the room where I am the Wifi network range should be sufficient. Let me check for the firmware version and let you know. What I can try is to hook up a Wifi booster I have and increase the Wifi signal which may helps. What is weird is that the module is showing the SSID but no access to the router from any device connected to it.

    I will also build a TAR archive with some games binaries and check but I am pretty confident that will work. 


  16. 7 hours ago, Al_Nafuur said:

    Do you have a PlusCart (or DIY Kit) from the PlusCart webshop? Or did you get the parts yourself?

     

    If the second is true, are you sure that the firmware version is v.1.6.2 or newer on the ESP8266?

    I got the DIY kit from the Webshop. I will recheck the firmware version from the menu for the Wifi module. It should be at least 1.6.2 right?

    I cannot even say it is a bad soldering as I checked all my solder joints under microscope and looks fine. Anyway the cart seems to work fine and gives access to menu functions. I have tried to scan for "wifi in range" and no results are showing. Also weird as there are at least two good wifi signal in range here and used by the PC. 

    I will try to flash a TAR archive to memory and check if the board is working.


  17. Hi Al_Nafuur. Yes, I have tried 

    http://192.168.4.1

    from the top address bar of the browser. Tried with Opera, Edge and Chrome both Windows and MacOSX but no luck. I just get a "this site is unavailable" page. It is weird because the SSID Plucart+ is visible and I am connected to it.

×
×
  • Create New...