st-anything/lib/SmartThingsWiFiEsp/SmartThingsWiFiEsp.cpp

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2023-03-11 14:11:03 +00:00
//*******************************************************************************
// SmartThings Arduino WifiEsp Library - Use an Arduino with an ESP-01 for WiFi
//
// License
// (C) Copyright 2017 Dan Ogorchock
//
// History
// 2017-02-20 Dan Ogorchock Created
// 2018-01-06 Dan Ogorchock Added WiFi.RSSI() data collection
// 2018-01-06 Dan Ogorchock Simplified the MAC address printout to prevent confusion
// 2018-02-03 Dan Ogorchock Support for Hubitat
// 2020-04-05 Dan Ogorchock Tweaked to hopefully prevent lockup
//*******************************************************************************
#include "SmartThingsWiFiEsp.h"
namespace st
{
//*******************************************************************************
// SmartThingsWiFiEsp Constructor - Arduino + ESP-01 board - STATIC IP
//*******************************************************************************
SmartThingsWiFiEsp::SmartThingsWiFiEsp(Stream *espSerial, String ssid, String password, IPAddress localIP, uint16_t serverPort, IPAddress hubIP, uint16_t hubPort, SmartThingsCallout_t *callout, String shieldType, bool enableDebug, int transmitInterval) :
SmartThingsEthernet(localIP, serverPort, hubIP, hubPort, callout, shieldType, enableDebug, transmitInterval, false),
st_server(serverPort),
st_espSerial(espSerial)
{
ssid.toCharArray(st_ssid, sizeof(st_ssid));
password.toCharArray(st_password, sizeof(st_password));
}
//*******************************************************************************
// SmartThingsWiFiEsp Constructor - Arduino + ESP-01 board - DHCP
//*******************************************************************************
SmartThingsWiFiEsp::SmartThingsWiFiEsp(Stream *espSerial, String ssid, String password, uint16_t serverPort, IPAddress hubIP, uint16_t hubPort, SmartThingsCallout_t *callout, String shieldType, bool enableDebug, int transmitInterval) :
SmartThingsEthernet(serverPort, hubIP, hubPort, callout, shieldType, enableDebug, transmitInterval, true),
st_server(serverPort),
st_espSerial(espSerial)
{
ssid.toCharArray(st_ssid, sizeof(st_ssid));
password.toCharArray(st_password, sizeof(st_password));
}
//*****************************************************************************
//SmartThingsWiFiEsp::~SmartThingsESP8266WiFI()
//*****************************************************************************
SmartThingsWiFiEsp::~SmartThingsWiFiEsp()
{
}
//*******************************************************************************
/// Initialize SmartThingsWiFiEsp Library
//*******************************************************************************
void SmartThingsWiFiEsp::init(void)
{
int status = WL_IDLE_STATUS; // the Wifi radio's status
Serial.println(F(""));
Serial.println(F("Initializing WiFiEsp network. Please be patient..."));
// Initialize the WiFiEsp library
WiFi.init(st_espSerial);
// check for the presence of the shield
if (WiFi.status() == WL_NO_SHIELD) {
Serial.println("ESP WiFi shield not present");
// don't continue
while (true);
}
// attempt to connect to WiFi network
while (status != WL_CONNECTED) {
Serial.print("Attempting to connect to WPA SSID: ");
Serial.println(st_ssid);
// Connect to WPA/WPA2 network
status = WiFi.begin(st_ssid, st_password);
delay(1000);
}
if (st_DHCP == false)
{
// Set the local IP address
WiFi.config(st_localIP);
}
st_server.begin();
uint8_t mac[6];
char buf[20];
Serial.println(F(""));
Serial.println(F("Enter the following three lines of data into ST App on your phone!"));
Serial.print(F("localIP = "));
Serial.println(WiFi.localIP());
Serial.print(F("serverPort = "));
Serial.println(st_serverPort);
WiFi.macAddress(mac);
Serial.print(F("MAC Address = "));
sprintf(buf, "%02X%02X%02X%02X%02X%02X", mac[5], mac[4], mac[3], mac[2], mac[1], mac[0]);
Serial.println(buf);
Serial.println(F(""));
Serial.print(F("SSID = "));
Serial.println(st_ssid);
Serial.print(F("PASSWORD = "));
Serial.println(st_password);
Serial.print(F("hubIP = "));
Serial.println(st_hubIP);
Serial.print(F("hubPort = "));
Serial.println(st_hubPort);
Serial.print(F("RSSI = "));
Serial.println(WiFi.RSSI());
Serial.println(F(""));
Serial.println(F("SmartThingsWiFiEsp: Intialized"));
Serial.println(F(""));
RSSIsendInterval = 5000;
previousMillis = millis() - RSSIsendInterval;
}
//*****************************************************************************
// Run SmartThingsWiFiEsp Library
//*****************************************************************************
void SmartThingsWiFiEsp::run(void)
{
String readString;
String tempString;
String strRSSI;
//if (WiFi.status() != WL_CONNECTED)
//{
// Serial.println(F("**********************************************************"));
// Serial.println(F("**** WiFi Module Disconnected. Attempting restart! ******"));
// Serial.println(F("**********************************************************"));
// WiFi.reset();
// init();
//}
//else
//{
if (millis() - previousMillis > RSSIsendInterval)
{
previousMillis = millis();
if (RSSIsendInterval < RSSI_TX_INTERVAL)
{
RSSIsendInterval = RSSIsendInterval + 1000;
}
strRSSI = String("rssi ") + String(WiFi.RSSI());
send(strRSSI);
if (_isDebugEnabled)
{
Serial.println(strRSSI);
}
}
//}
WiFiEspClient client = st_server.available();
if (client) {
boolean currentLineIsBlank = true;
while (client.connected()) {
if (client.available()) {
char c = client.read();
//read char by char HTTP request
if (readString.length() < 200) {
//store characters to string
readString += c;
}
else
{
if (_isDebugEnabled)
{
Serial.println(F(""));
Serial.println(F("SmartThings.run() - Exceeded 200 character limit"));
Serial.println(F(""));
}
}
// if you've gotten to the end of the line (received a newline
// character) and the line is blank, the http request has ended,
// so you can send a reply
if (c == '\n' && currentLineIsBlank) {
//now output HTML data header
tempString = readString.substring(readString.indexOf('/') + 1, readString.indexOf('?'));
if (tempString.length() > 0) {
client.println(F("HTTP/1.1 200 OK")); //send new page
client.println();
}
else {
client.println(F("HTTP/1.1 204 No Content"));
client.println();
client.println();
if (_isDebugEnabled)
{
Serial.println(F("No Valid Data Received"));
}
}
break;
}
if (c == '\n') {
// you're starting a new line
currentLineIsBlank = true;
}
else if (c != '\r') {
// you've gotten a character on the current line
currentLineIsBlank = false;
}
}
}
delay(1);
//stopping client
client.stop();
//Handle the received data after cleaning up the network connection
if (tempString.length() > 0) {
if (_isDebugEnabled)
{
Serial.print(F("Handling request from ST. tempString = "));
Serial.println(tempString);
}
//Pass the message to user's SmartThings callout function
tempString.replace("%20", " "); //Clean up for Hubitat
_calloutFunction(tempString);
}
readString = "";
tempString = "";
}
}
//*******************************************************************************
/// Send Message out over Ethernet to the Hub
//*******************************************************************************
void SmartThingsWiFiEsp::send(String message)
{
st_client.stop();
//if (WiFi.status() != WL_CONNECTED)
//{
// Serial.println(F("**********************************************************"));
// Serial.println(F("**** WiFi Module Disconnected. Attempting restart! ******"));
// Serial.println(F("**********************************************************"));
// WiFi.reset();
// init();
//}
//Make sure the client is stopped, to free up socket for new conenction
st_client.stop();
if (st_client.connect(st_hubIP, st_hubPort))
{
st_client.println(F("POST / HTTP/1.1"));
st_client.print(F("HOST: "));
st_client.print(st_hubIP);
st_client.print(F(":"));
st_client.println(st_hubPort);
st_client.println(F("CONTENT-TYPE: text"));
st_client.print(F("CONTENT-LENGTH: "));
st_client.println(message.length());
st_client.println();
st_client.println(message);
}
else
{
//connection failed;
if (_isDebugEnabled)
{
Serial.println(F("***********************************************************"));
Serial.println(F("***** SmartThings.send() - Ethernet Connection Failed *****"));
Serial.println(F("***********************************************************"));
Serial.print(F("hubIP = "));
Serial.print(st_hubIP);
Serial.print(F(" "));
Serial.print(F("hubPort = "));
Serial.println(st_hubPort);
Serial.println(F("***********************************************************"));
Serial.println(F("**** WiFi Disconnected. ESP8266 should auto-reconnect ****"));
Serial.println(F("***********************************************************"));
}
//WiFi.reset();//End current broken WiFi Connection
//init(); //Re-Init connection to get things working again
if (_isDebugEnabled)
{
Serial.println(F("***********************************************************"));
Serial.println(F("****** Attempting to resend missed data *******"));
Serial.println(F("***********************************************************"));
}
st_client.flush();
st_client.stop();
if (st_client.connect(st_hubIP, st_hubPort))
{
st_client.println(F("POST / HTTP/1.1"));
st_client.print(F("HOST: "));
st_client.print(st_hubIP);
st_client.print(F(":"));
st_client.println(st_hubPort);
st_client.println(F("CONTENT-TYPE: text"));
st_client.print(F("CONTENT-LENGTH: "));
st_client.println(message.length());
st_client.println();
st_client.println(message);
}
}
//if (_isDebugEnabled) { Serial.println(F("WiFi.send(): Reading for reply data "));}
// read any data returned from the POST
//while (st_client.connected()) {
while (st_client.available()) {
char c = st_client.read(); //gets byte from ethernet buffer
//if (_isDebugEnabled) { Serial.print(c); } //prints byte to serial monitor
//}
}
delay(1);
st_client.stop();
}
}