TI-99/4A & Woods WiOn IOT Home Automation Testing

So, I decided that I would expand on this past experiment:
Woods WiOn Indoor Wi-Fi Outlet Modification (Amazon Echo Too!)

***NOTE*** This is a work in progress, and who knows where it will go as it is just BSing around.

I wrote a different program, utilizing the Arduino IDE, that would allow my TI-99/4A to make a connection to this device, utilizing Stuart's Web Browser.

WiOn_TI99 ESP8266 Arduino Code:

#include <ESP8266WiFi.h> #include <WiFiClient.h> #include <ESP8266WebServer.h> #include <ESP8266mDNS.h> const char* ssid = "FrogFi"; const char* password = "**********"; ESP8266WebServer server(80); const int relay = 15; void handleRoot() {  Serial.println("test");  server.send(200, "text/html", "<99ml><p>TEST</p></99ml>"); } void handleNotFound(){  digitalWrite(relay, 1);  String message = "<99ml><p>File Not Found</p></99ml>";  message += "URI: ";  message += server.uri();  message += "\nMethod: ";  message += (server.method() == HTTP_GET)?"GET":"POST";  message += "\nArguments: ";  message += server.args();  message += "\n";  for (uint8_t i=0; i<server.args(); i++){    message += " " + server.argName(i) + ": " + server.arg(i) + "\n";  }  server.send(404, "text/plain", message);  digitalWrite(relay, 0); } void setup(void){  pinMode(relay, OUTPUT);  digitalWrite(relay, 0);  Serial.begin(115200);  WiFi.mode(WIFI_STA);  WiFi.begin(ssid, password);  Serial.println("");  // Wait for connection  while (WiFi.status() != WL_CONNECTED) {    delay(500);    Serial.print(".");  }  Serial.println("");  Serial.print("Connected to ");  Serial.println(ssid);  Serial.print("IP address: ");  Serial.println(WiFi.localIP());  if (MDNS.begin("esp8266")) {    Serial.println("MDNS responder started");  }  server.on("/", handleRoot);  server.on("/on", [](){    server.send(200, "text/html", "<99ml><p>ON</p></99ml>");    digitalWrite(relay, 1);  });  server.on("/off", [](){    server.send(200, "text/plain", "<99ml><p>OFF</p></99ml>");    digitalWrite(relay, 0);  });  server.onNotFound(handleNotFound);  server.begin();  Serial.println("HTTP server started"); } void loop(void){  server.handleClient(); }

I did run into some problems, that I am still working through.  This little web-server not being kind to the older & slower TI.

I figured this out by utilizing telnet.  I would telnet into port 80, on the device, and I noticed that it didn't give very much time to issue HTTP commands like: [GET / HTTP/1.1]

I have been working though the timing by messing with ESP8266WebServer.h, that is part of the esp8266/Arduino libraries.

ESP8266WebServer.h

... #define HTTP_DOWNLOAD_UNIT_SIZE 1460 #define HTTP_UPLOAD_BUFLEN 2048 #define HTTP_MAX_DATA_WAIT 1000 //ms to wait for the client to send the request #define HTTP_MAX_POST_WAIT 1000 //ms to wait for POST data to arrive #define HTTP_MAX_CLOSE_WAIT 200 //ms to wait for the client to close the connection ...

HTTP_MAX_DATA_WAIT is the value that seems to give the TI some time.

I noticed the ESP8266WebServer.h out in the GitHub project has some more timing settings:

GitHub esp8266/Arduino ESP8266WebServer.h

I may want to upgrade the packages that I am using.

The good news is, I was able to turn a lamp on, from my TI-99/4A. :)

It is probably a better idea to have a modern server talk to the ESP8266 devices, and have the TI go through that.  That would allow more devices, and a centralized website created for all of them.   It would also eliminate having to play around with the timing on these.