Robust PC-RPI IOT Platform

Hi Jay,

I'm not sure of the requirement, your question is framed in an unusual way where you're mentioning some programming languages and command lines, but the end goal is missing to help answer it well.

1. My Goal in detail

        (e.g. climb a mountain next year)

2. What things I'm trying to solve

         (e.g. establish how high I am)

3. What constraints I have

         (e.g. cost, software experience, hardware experience)

4. What hardware, tools and software I'm using

         (e.g. part number, link to the tools and software)

5. Diagram or sketch to show the scenario, and what I've attempted

Although it is a guess, possibly a couple of things worth reading up on, maybe they may or may not end up being part of a solution, but are useful to know about anyway, are:

(1) SSH

With SSH, it's possible to send commands from one machine to another, and have them execute and return the displayed result. For more information on this, see  Accessing and Controlling the Pi

(2) HTTP

HTTP can be used by programmers to send something like a web link from one machine to another, and have the remote side pull information out of that, perform an action, and then send back the results. HTTP can often be tested by using a web browser, and typing something like http://192.168.0.10/mycommandsystem?command=clearscreen;reportbackwhencomplete=true

At the remote end, code that is continuously running and listening for such a request (known as web server software) will decipher that line, and do whatever actions it needs to (based on what the software programmer intends) and then send a response back. For more information on this type of scheme, there's a nice tutorial to work through here: https://projects.raspberrypi.org/en/projects/python-web-server-with-flask

Both of the above methods work in a similar way in that they rely on a network protocol, and IP addressing. This works because any device on your home network (you mention WiFi, but it won't matter if it is via WiFi or Ethernet, it will work the same way) have an IP address, and SSH and HTTP work on top of that network, transmitting and receiving information in a client and server machine relationship that comes about when you run server software on the remote machine (SSH is by default running on the Pi once enabled, and the HTTP server can be coded as indicated in the web link above) and when you use client software that makes use of SSH, or HTTP, or when you write your own custom programs that make use of a protocol that the server understands.

Based on this information, it might get you closer to defining what you're looking for, or (hopefully) it may be the answer.

This piece of software can do something similar to what you describe, gpio.zero.

https://gpiozero.readthedocs.io/en/stable/remote_gpio.html#preparing-the-control-computer

Read the information at that link, and above it to see the capabilities.

It’s not IDE slave though, it’s USB slave.  But it does make the raspberry pi a slave of the main PC.  The main slave function is to make the rPi GPIO accessible to the PC.  Does that help?  It does a lot more than just make the rPi a slave, it’s a great piece of software for the rPi.

Hi Jay,

I think SSH  ( Secure shell) can do pretty much everything what you want. SSH server is not enabled by default in RPi. But you can easily enable it in raspi-config. *

• Execute raspi-config command on your raspberrypi and go to advanced_options and enable ssh.

If your raspberry pi and host computer (in your case Windows PC) are connected to the same network, find the IP address allotted to your RPi by typing ifconfig on the raspberry pi or by using nmap port scan to figure

out the IP Address from your host PC.

If your Rpi and Windows PC are not connected to a Local network, You can easily create one using a cheap switch (something like this : https://www.amazon.com/dp/B07PFYM5MZ/ref=sspa_dk_detail_0?psc=1 ) (This option give you the flexibility to add more nodes to the network) or by using a crossover ethernet cable (https://en.wikipedia.org/wiki/Ethernet_crossover_cable ).

Once you have the network ready. Execute ssh command using "putty" https://www.putty.org/  and connect to the IP address where your RPi is.

Now you will get a terminal which is infact the terminal of your raspberry pi.

Execute anything you want to do on Rpi here.

Any doubts? Feel free to contact.

Thanks

Aswin

First Aswin: Thank you very much.

some systems can detect and install a new device and have its core configurations available by selection with zero hassle. My object is to have the PI control its myriads of sensors, end-effectors, gizmos via its hats,   standard bidirectional links like PWM, USB,  analog world wires, or execute modules written in popular languages, all acting as objects, and permit the central control to be from a “main program” in the PC or the PI. Thus these two (later more) systems are “entangled” and in “superposition” in that all their attributes/ resources are in a soup, and can be proportioned arbitrarily. It basically lets you apply yourself to your  mission and not worry about the logical wiring, best language/ platform and system programming. My thanks again, any magic wands, already canned creations towards this objective .. sannerwind@gmail.com