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Catalina - ANSI C and Lua for the Propeller 1 & 2 - Page 19 — Parallax Forums

Catalina - ANSI C and Lua for the Propeller 1 & 2

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  • RossHRossH Posts: 5,576
    edited 2025-04-18 23:30

    I've not had time to do much more on Catalina yet (Easter is one of our busy periods!) but I discovered recently that if I do not do regular posts on the page I use for hosting videos, then Patreon suspends the page :(

    So I have added a short video on the above jQuery demo ...

    See https://www.patreon.com/posts/catalina-jquery-126965669

    Ross.

  • dgatelydgately Posts: 1,639

    Well worth the visit to the demo... High quality video with an in-depth audio explanation. Great work, Ross!

    dgately

  • RossHRossH Posts: 5,576
    edited 2025-05-06 09:58

    Catalina 8.6 has been released on GitHub and SourceForge.

    This is a full release. It adds some minor eLua enhancements and bug fixes. The main reason for the release is to add a new version of Catalina's Windows telnet client, which has enhanced support for the Parallax WiFi module's Serial to TCP Bridge (under Linux you can use the standard telnet client, but the Microsoft Windows telnet client does not work well with the Parallax WiFi module).

    This allows an internet interface to be used in place of the serial interface for Catalyst, as well as any other program that use one of the serial HMI options.

    There is a new video that demonstrates the new telnet support here.

    Here is the relevant extract from the README.TXT:

    RELEASE 8.6
    
    New Functionality
    -----------------
    
    1. A new eLua variant (sluarfx.c) has been added which can be used when
       a slave WiFi RPC propeller needs only a server and not a client. This 
       variant executes the server in Hub RAM, making it significantly faster 
       for Lua servers small enough to fit.
    
    2. A new eLua variant (rlua2.c) has been added which includes only WiFi RPC 
       support and omits Serial ALOHA support. This allows it to omit the aloha 
       protocol code, and also use the 2 port serial plugin in place of the 8 
       port serial plugin, which saves Hub RAM. This variant includes the Lua 
       parser. The corresponding variant that omits the Lua parser has been 
       renamed as rlua2x.c for consistency (it was previously named rluax2.c).
    
    3. The eLua/ALOHA WiFi RPC HTTP demo (demos/eLua/http) now includes a complete
       set of definitions for all the Lua WiFi functions. As demonstrated by the 
       demo, these allow a client Lua program to use the WiFi functions even 
       though those functions are implemented in the server, not in the client.
    
    4. The MAX_SERVICES constant in all the eLua/ALOHA variants has been increased
       from 20 to 50. This number is arbitrary, but it has been expanded to 50 to
       accommodate the 20 WiFi services in the updated HTTP demo (demos/elua/http).
       It can be increased further if required.
    
    5. The eLua/ALOHA WiFi RPC variant rlua2x.c is now so similar to the rluasx.c
       variant that there is no need to have both, so rluasx.c has been removed. 
       The build scripts and Aloha documentation have been updated accordingly.
    
    6. A demo of using jQuery with Catalina has been added. The demos/wifi/gauge 
       demo uses jQuery and a custom jQuery widget to demonstrate exchanging data
       between a Propeller and a browser-based user interface. Both a Lua and a C 
       version of the demo are provided. An eLua/ALOHA WiFi version is also
       provided (in demos/eLua/gauge).
    
    7. The Catalina telnet binary has been copied to the bin directory (it was
       previously only in the source/comms/bin directory). This is because the 
       telnet client was not previously much use, but it has now been enhanced 
       to work with the Parallax WiFi module's Serial Bridge TCP Server. This 
       enables either Catalyst, or a downloaded program, to be used via the 
       WiFi module using the telnet client. This is currently supported on a 
       Propeller 2 only. 
    
       Catalina's telnet client has been enhanced to work with the Parallax WiFi 
       module's Serial Bridge TCP Server by:
    
       - Increasing the size and number of comms buffers, to account for the 
         fact that the Serial Bridge TCP Server may send larger packets than 
         a telnet server, and may also send more small packets than a telnet 
         server.
    
       - adding a new mode selection telnet command ("mode char" or "mode line"), 
         which can also be specified on the command line (as "/mode=char" or
         "/mode=line"). When specified on the command line, the "/mode=char" 
         option forces the telnet client into character mode without using 
         telnet option negotiation, which is not supported by the WiFi module's 
         Serial Bridge TCP Server (which is not actually a telnet server, it
         simply echoes any characters sent, including any telnet commands).
    
         When using another telnet client, specifying character mode will try
         to do the same using telnet option negotiation, which may or may not 
         work, depending on how the telnet client responds to having all the
         option negotiations simply echoed by the Serial Bridge TCP Server. It
         SHOULD work, but it may not - e.g. it does not work with the Microsoft
         telnet client, which does not properly support either character mode 
         or disabling local echo - so all characters entered end up being echoed 
         twice.
    
       To use the telnet client via WiFi instead of a hard-wired serial port, the 
       Parallax WiFi module must be installed on pin group 56..63. However, note
       that using this pin group on a P2 EDGE with PSRAM (i.e. P2-EC32MB) means 
       the WiFi module's RESET and PGM pins are not connected, so the WiFi module
       cannot be reset programmatically and may have to be power-cycled manually 
       whenever it needs to be reset. But it does allow a telnet client program 
       to be used as Catalyst's user interface.
    
       Also note that when the WiFi module is installed on pin group 56 .. 63, 
       it is possible to download software to the Propeller 2 by opening a 
       browser to the page http://xxx.xxx.xxx.xxx//p2-ddloader.html (where
       xxx.xxx.xxx.xxx is the WiFi module's IP address) - and then use the
       telnet client to interact with the downloaded software. But to download 
       software the P2 module's switch 3 must be up and switch 4 must be down, 
       whereas to run software from the SD card using Catalyst, switch 3 must 
       be down and pin 4 must be up. So you cannot do both without changing 
       the switch settings.
    
       Under Windows, you can build Catalyst to use one of the serial HMI options
       and a VT100 as usual, such as:
    
          build_all P2_EDGE SIMPLE VT100 USE_COLOR
    
       Then, to use the Catalina telnet client, specify the IP address of the
       WiFi module, and the following options (where xxx.xxx.xxx.xxx is the IP 
       address of the WiFi module):
    
          telnet /mode=char /uselfaseol /autocronlf /host=xxx.xxx.xxx.xxx
    
       The Linux telnet client does not have comparable options, so instead you 
       must build Catalyst to use one of the serial HMI options but also add the 
       CR_ON_LF option:
    
          build_all P2_EDGE SIMPLE VT100 USE_COLOR CR_ON_LF
    
       Then, use the Linux telnet client specifying the IP address of the WiFi 
       module (e.g. where xxx.xxx.xxx.xxx is the IP address of the WiFi module):
    
          telnet xxx.xxx.xxx.xxx
    
       Once in telnet (Linux only), enter the telnet escape character ("Ctrl+]") 
       and then enter the telnet command "mode char". This will use telnet 
       negotiations to enter character mode, which may result in the program 
       receiving a few spurious characters - but it should work ok after that.
    
       Note that the WiFi module's Serial Bridge TCP Server times out after 5 
       minutes of inactivity. The connection can be re-opened again using the 
       telnet "open" command (i.e. Enter telnet command mode by pressing "CTrl ]" 
       and enter the command "open xxx.xxx.xxx.xxx" at the "Telnet>" prompt).
    
    Other Changes
    -------------
    
    1. The eLua/ALOHA custom dispatcher was not using the correct length of the
       RPC data it pushed onto the Lua stack when processing an RPC call. This may
       have led to RPC call failing or Lua running out of memory when processing
       the RPC call. Affected the Propeller 2 only on Windows and Linux.
    
    2. The definition of the WiFi RECV function in the eLua http demo was wrong.
       Affected the Propeller 1 and Propeller 2 on Windows and Linux.
    
    3. The serial.h include file did not allow for the use of the Propeller 1 
       serial4x library. Affected the Propeller 1 only on Winows and Linux.
    
    4. The P2_EVAL platform definition file (P2EVAL.inc) was missing the WiFi and 
       2 Port Serial definitions. Affected the Propeller 2 only on Windows and 
       Linux.
    
    5. Add a small delay to the eLua/ALOHA custom dispatcher, to prevent the 
       program monopolizing the WiFi module by continuously polling it for new
       events. Affected the Propeller 2 only on Windows and Linux.
    
    6. Some Catalina makefiles were not correctly detecting whether or not to use
       DOS or Linux commands (e.g. "del" vs "rm"). Most affected was the 
       "clean_all" command, which would never complete when used in some demos 
       directories. Affected Windows only.
    
  • RossHRossH Posts: 5,576

    I've just updated the Catalina Reference Manuals for the Propeller 1 and the Propeller 2. The main change is to add in to the reference manuals a lot of stuff that only existed in the Release Notes or in various README.TXT files.

    The updated documents are available on GitHub here, or on Sourceforge here.

    Ross.

  • RossHRossH Posts: 5,576

    Just an oddity worth being aware of if you intend to use telnet as your means of interacting with the P2.

    Doing so requires you to have a Parallax WiFi adapter on pin group 56 .. 63, and some odd things happen if you also have a Prop Plug plugged in (to pins 62 & 63). If the Prop Plug is NOT also connected to a USB port, then the telnet connection may not work correctly. I have tried many different combinations of WiFi adapter, P2 Edge board and Prop Plug, but I am yet to figure out what is going on. Some combinations always work, some combination work sometimes, and some combinations never do.

    However, it can always be made to work simply by either removing the Prop Plug, or else connecting the Prop Plug to a USB port.

    Ross.

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