mirror of
https://github.com/DCC-EX/CommandStation-EX.git
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Restartable Wifi interface.
This commit is contained in:
Asbelos
parent
6ad50df2a7
commit
55d175adb0
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@ -1,142 +1,154 @@
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/*
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* © 2020, Chris Harlow. All rights reserved.
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*
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* This file is part of Asbelos DCC API
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*
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* This is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* It is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with CommandStation. If not, see <https://www.gnu.org/licenses/>.
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*/
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© 2020, Chris Harlow. All rights reserved.
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This file is part of Asbelos DCC API
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This is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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It is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with CommandStation. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "WifiInterface.h"
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#include "DIAG.h"
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#include "StringFormatter.h"
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#include "WiThrottle.h"
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const char PROGMEM READY_SEARCH[] ="\r\nready\r\n";
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const char PROGMEM OK_SEARCH[] ="\r\nOK\r\n";
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const char PROGMEM END_DETAIL_SEARCH[] ="@ 1000";
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const char PROGMEM PROMPT_SEARCH[] =">";
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const char PROGMEM SEND_OK_SEARCH[] ="\r\nSEND OK\r\n";
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const unsigned long LOOP_TIMEOUT=2000;
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bool WifiInterface::connected=false;
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bool WifiInterface::closeAfter=false;
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const char PROGMEM READY_SEARCH[] = "\r\nready\r\n";
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const char PROGMEM OK_SEARCH[] = "\r\nOK\r\n";
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const char PROGMEM END_DETAIL_SEARCH[] = "@ 1000";
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const char PROGMEM PROMPT_SEARCH[] = ">";
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const char PROGMEM SEND_OK_SEARCH[] = "\r\nSEND OK\r\n";
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const unsigned long LOOP_TIMEOUT = 2000;
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bool WifiInterface::connected = false;
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bool WifiInterface::closeAfter = false;
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DCCEXParser WifiInterface::parser;
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byte WifiInterface::loopstate=0;
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unsigned long WifiInterface::loopTimeoutStart=0;
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int WifiInterface::datalength=0;
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byte WifiInterface::loopstate = 0;
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unsigned long WifiInterface::loopTimeoutStart = 0;
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int WifiInterface::datalength = 0;
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int WifiInterface::connectionId;
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byte WifiInterface::buffer[MAX_WIFI_BUFFER];
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MemStream WifiInterface::streamer(buffer,sizeof(buffer));
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Stream * WifiInterface::wifiStream=NULL;
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HTTP_CALLBACK WifiInterface::httpCallback=0;
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MemStream WifiInterface::streamer(buffer, sizeof(buffer));
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Stream * WifiInterface::wifiStream = NULL;
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HTTP_CALLBACK WifiInterface::httpCallback = 0;
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void WifiInterface::setup(Stream & setupStream, const __FlashStringHelper* SSid, const __FlashStringHelper* password,
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const __FlashStringHelper* hostname, const __FlashStringHelper* servername, int port) {
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wifiStream=&setupStream;
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wifiStream = &setupStream;
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DIAG(F("\n++++++ Wifi Setup In Progress ++++++++\n"));
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connected=setup2( SSid, password,hostname, servername,port);
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// TODO calloc the buffer and streamer and parser etc
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DIAG(F("\n++++++ Wifi Setup %S ++++++++\n"), connected?F("OK"):F("FAILED"));
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connected = setup2( SSid, password, hostname, servername, port);
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DIAG(F("\n++++++ Wifi Setup %S ++++++++\n"), connected ? F("OK") : F("FAILED"));
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}
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bool WifiInterface::setup2(const __FlashStringHelper* SSid, const __FlashStringHelper* password,
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const __FlashStringHelper* hostname, const __FlashStringHelper* servername, int port) {
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int ipOK = 0;
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int ipOK=0;
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delay(1000);
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StringFormatter::send(wifiStream, F("AT+GMR\r\n")); // request AT version
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checkForOK(2000, OK_SEARCH, true, false); // Makes this visible on the console
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StringFormatter::send(wifiStream,F("AT+RST\r\n")); // reset module
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checkForOK(5000,READY_SEARCH,false); // generally not interesting to DCC
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StringFormatter::send(wifiStream, F("AT+CWMODE=1\r\n")); // configure as client
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checkForOK(1000, OK_SEARCH, true); // Not always OK, sometimes "no change"
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StringFormatter::send(wifiStream,F("AT+GMR\r\n")); // request AT version
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checkForOK(2000,OK_SEARCH,true); // Makes this visible on the console
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delay(8000); // give preconfigured ES8266 a chance to connect
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StringFormatter::send(wifiStream,F("AT+CWMODE=1\r\n")); // configure as client
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checkForOK(1000,OK_SEARCH,true); // Not always OK, sometimes "no change"
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StringFormatter::send(wifiStream,F("AT+CIFSR\r\n"));
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if(checkForOK(5000, (const char*) F("+CIFSR:STAIP"),true))
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if(!checkForOK(1000, (const char*) F("0.0.0.0"),true))
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ipOK=1;
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StringFormatter::send(wifiStream, F("AT+CIFSR\r\n"));
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if (checkForOK(5000, (const char*) F("+CIFSR:STAIP"), true,false))
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if (!checkForOK(1000, (const char*) F("0.0.0.0"), true,false))
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ipOK = 1;
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if(!ipOK) {
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StringFormatter::send(wifiStream,F("AT+CWMODE=3\r\n")); // configure as server or access point
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checkForOK(1000,OK_SEARCH,true); // Not always OK, sometimes "no change"
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if (!ipOK) {
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StringFormatter::send(wifiStream, F("AT+CWMODE=3\r\n")); // configure as server or access point
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checkForOK(1000, OK_SEARCH, true); // Not always OK, sometimes "no change"
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// Older ES versions have AT+CWJAP, newer ones have AT+CWJAP_CUR and AT+CWHOSTNAME
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StringFormatter::send(wifiStream,F("AT+CWJAP?\r\n"));
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if (checkForOK(2000,OK_SEARCH,true)) {
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StringFormatter::send(wifiStream, F("AT+CWJAP?\r\n"));
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if (checkForOK(2000, OK_SEARCH, true)) {
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// early version supports CWJAP
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StringFormatter::send(wifiStream,F("AT+CWJAP=\"%S\",\"%S\"\r\n"),SSid,password);
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checkForOK(20000,OK_SEARCH,true); // can ignore failure as AP mode may still be ok
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StringFormatter::send(wifiStream, F("AT+CWJAP=\"%S\",\"%S\"\r\n"), SSid, password);
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checkForOK(20000, OK_SEARCH, true); // can ignore failure as AP mode may still be ok
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}
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else {
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// later version supports CWJAP_CUR
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StringFormatter::send(wifiStream, F("AT+CWHOSTNAME=\"%S\"\r\n"), hostname); // Set Host name for Wifi Client
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checkForOK(2000, OK_SEARCH, true); // dont care if not supported
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StringFormatter::send(wifiStream,F("AT+CWJAP_CUR=\"%S\",\"%S\"\r\n"),SSid,password);
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checkForOK(20000,OK_SEARCH,true); // can ignore failure as AP mode may still be ok
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StringFormatter::send(wifiStream, F("AT+CWJAP_CUR=\"%S\",\"%S\"\r\n"), SSid, password);
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checkForOK(20000, OK_SEARCH, true); // can ignore failure as AP mode may still be ok
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StringFormatter::send(wifiStream,F("AT+CIPRECVMODE=0\r\n"),port); // make sure transfer mode is correct
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checkForOK(2000,OK_SEARCH,true);
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StringFormatter::send(wifiStream, F("AT+CIPRECVMODE=0\r\n"), port); // make sure transfer mode is correct
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checkForOK(2000, OK_SEARCH, true);
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// StringFormatter::send(wifiStream, F("AT+MDNS=1,\"%S.local\",\"%S.local\",%d\r\n"), hostname, servername, port); // Setup mDNS for Server
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// if (!checkForOK(5000, OK_SEARCH, true)) return false;
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(void)servername; // avoid compiler warning from commented out AT_MDNS above
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}
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StringFormatter::send(wifiStream,F("AT+CIFSR\r\n")); // get ip address //192.168.4.1
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if (!checkForOK(10000,OK_SEARCH,true)) return false;
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StringFormatter::send(wifiStream, F("AT+CIFSR\r\n")); // get ip address //192.168.4.1
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if (!checkForOK(10000, OK_SEARCH, true, false)) return false;
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}
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StringFormatter::send(wifiStream,F("AT+CIPMUX=1\r\n")); // configure for multiple connections
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if (!checkForOK(10000,OK_SEARCH,true)) return false;
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StringFormatter::send(wifiStream, F("AT+CIPMUX=1\r\n")); // configure for multiple connections
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if (!checkForOK(10000, OK_SEARCH, true)) return false;
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StringFormatter::send(wifiStream,F("AT+CIPSERVER=1,%d\r\n"),port); // turn on server on port
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if (!checkForOK(10000,OK_SEARCH,true)) return false;
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StringFormatter::send(wifiStream, F("AT+CIPSERVER=1,%d\r\n"), port); // turn on server on port
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if (!checkForOK(10000, OK_SEARCH, true)) return false;
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return true;
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}
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// This function is used to allow users to enter <+ commands> through the DCCEXParser
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// Once the user has made whatever changes to the AT commands, a <+X> command can be used
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// to force on the connectd flag so that the loop will start picking up wifi traffic.
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// If the settings are corrupted <+RST> will clear this and then you must restart the arduino.
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void WifiInterface::ATCommand(const byte * command) {
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StringFormatter:: send(wifiStream,F("AT+%s\r\n"), command+1);
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checkForOK(10000,OK_SEARCH,true);
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if (*command=='X') {
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connected = true;
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DIAG(F("\n++++++ Wifi Connction forced on ++++++++\n"));
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}
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else {
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StringFormatter:: send(wifiStream, F("AT+%s\r\n"), command + 1);
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checkForOK(10000, OK_SEARCH, true);
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}
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}
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void WifiInterface::setHTTPCallback(HTTP_CALLBACK callback) {
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httpCallback=callback;
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httpCallback = callback;
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}
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bool WifiInterface::checkForOK( const unsigned int timeout, const char * waitfor, bool echo) {
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bool WifiInterface::checkForOK( const unsigned int timeout, const char * waitfor, bool echo, bool escapeEcho) {
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unsigned long startTime = millis();
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char const *locator=waitfor;
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DIAG(F("\nWifi Check: [%E]"),waitfor);
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while( millis()-startTime < timeout) {
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while(wifiStream->available()) {
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int ch=wifiStream->read();
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if (echo) StringFormatter::printEscape(&DIAGSERIAL,ch); /// THIS IS A DIAG IN DISGUISE
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if (ch!=pgm_read_byte_near(locator)) locator=waitfor;
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if (ch==pgm_read_byte_near(locator)) {
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char const *locator = waitfor;
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DIAG(F("\nWifi Check: [%E]"), waitfor);
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while ( millis() - startTime < timeout) {
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while (wifiStream->available()) {
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int ch = wifiStream->read();
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if (echo) {
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if (escapeEcho) StringFormatter::printEscape(&DIAGSERIAL, ch); /// THIS IS A DIAG IN DISGUISE
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else DIAG(F("%c"), ch);
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}
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if (ch != pgm_read_byte_near(locator)) locator = waitfor;
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if (ch == pgm_read_byte_near(locator)) {
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locator++;
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if (!pgm_read_byte_near(locator)) {
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DIAG(F("\nFound in %dms"),millis()-startTime);
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DIAG(F("\nFound in %dms"), millis() - startTime);
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return true;
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}
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}
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}
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}
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DIAG(F("\nTIMEOUT after %dms\n"),timeout);
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DIAG(F("\nTIMEOUT after %dms\n"), timeout);
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return false;
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}
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@ -146,15 +158,15 @@ bool WifiInterface::isHTTP() {
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// You may think a simple strstr() is better... but not when ram & time is in short supply
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switch (buffer[0]) {
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case 'P':
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if (buffer[1]=='U' && buffer[2]=='T' && buffer[3]==' ' ) return true;
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if (buffer[1]=='O' && buffer[2]=='S' && buffer[3]=='T' && buffer[4]==' ') return true;
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if (buffer[1]=='A' && buffer[2]=='T' && buffer[3]=='C' && buffer[4]=='H' && buffer[5]==' ') return true;
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if (buffer[1] == 'U' && buffer[2] == 'T' && buffer[3] == ' ' ) return true;
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if (buffer[1] == 'O' && buffer[2] == 'S' && buffer[3] == 'T' && buffer[4] == ' ') return true;
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if (buffer[1] == 'A' && buffer[2] == 'T' && buffer[3] == 'C' && buffer[4] == 'H' && buffer[5] == ' ') return true;
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return false;
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case 'G':
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if (buffer[1]=='E' && buffer[2]=='T' && buffer[3]==' ' ) return true;
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if (buffer[1] == 'E' && buffer[2] == 'T' && buffer[3] == ' ' ) return true;
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return false;
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case 'D':
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if (buffer[1]=='E' && buffer[2]=='L' && buffer[3]=='E' && buffer[4]=='T' && buffer[5]=='E' && buffer[6]==' ') return true;
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if (buffer[1] == 'E' && buffer[2] == 'L' && buffer[3] == 'E' && buffer[4] == 'T' && buffer[5] == 'E' && buffer[6] == ' ') return true;
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return false;
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default:
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return false;
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@ -167,106 +179,121 @@ void WifiInterface::loop() {
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WiThrottle::loop(); // check heartbeats
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// read anything into a buffer, collecting info on the way
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while (loopstate!=99 && wifiStream->available()) {
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int ch=wifiStream->read();
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while (loopstate != 99 && wifiStream->available()) {
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int ch = wifiStream->read();
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// echo the char to the diagnostic stream in escaped format
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// StringFormatter::printEscape(&DIAGSERIAL,ch); // DIAG in disguise
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StringFormatter::printEscape(&DIAGSERIAL,ch); // DIAG in disguise
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switch (loopstate) {
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case 0: // looking for +IPD
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connectionId=0;
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if (ch=='+') loopstate=1;
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connectionId = 0;
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if (ch == '+') loopstate = 1;
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break;
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case 1: // Looking for I in +IPD
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loopstate= (ch=='I')?2:0;
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loopstate = (ch == 'I') ? 2 : 0;
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break;
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case 2: // Looking for P in +IPD
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loopstate= (ch=='P')?3:0;
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loopstate = (ch == 'P') ? 3 : 0;
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break;
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case 3: // Looking for D in +IPD
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loopstate= (ch=='D')?4:0;
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loopstate = (ch == 'D') ? 4 : 0;
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break;
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case 4: // Looking for , After +IPD
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loopstate= (ch==',')?5:0;
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loopstate = (ch == ',') ? 5 : 0;
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break;
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case 5: // reading connection id
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if (ch==',') loopstate=6;
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else connectionId=10*connectionId+(ch-'0');
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if (ch == ',') loopstate = 6;
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else connectionId = 10 * connectionId + (ch - '0');
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break;
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case 6: // reading for length
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if (ch==':') loopstate=(datalength==0)?99:7; // 99 is getout without reading next char
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else datalength=datalength*10 + (ch-'0');
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if (ch == ':') loopstate = (datalength == 0) ? 99 : 7; // 99 is getout without reading next char
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else datalength = datalength * 10 + (ch - '0');
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streamer.flush(); // basically sets write point at start of buffer
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break;
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case 7: // reading data
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streamer.write(ch);
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datalength--;
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if (datalength==0) loopstate=99;
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if (datalength == 0) loopstate = 99;
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break;
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case 10: // Waiting for > so we can send reply
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if (millis()-loopTimeoutStart > LOOP_TIMEOUT) {
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if (millis() - loopTimeoutStart > LOOP_TIMEOUT) {
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DIAG(F("\nWifi TIMEOUT on wait for > prompt or ERROR\n"));
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loopstate=0; // go back to +IPD
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loopstate = 0; // go back to +IPD
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break;
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}
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if (ch=='>'){
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// DIAG(F("\n> [%e]\n"),buffer);
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if (ch == '>') {
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// DIAG(F("\n> [%e]\n"),buffer);
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wifiStream->print((char *) buffer);
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loopTimeoutStart=millis();
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loopstate=closeAfter?11:0;
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loopTimeoutStart = millis();
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loopstate = closeAfter ? 11 : 0;
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break;
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}
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if (ch == '.') { // busy during send, delay and retry
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loopstate = 12; // look for SEND OK finished
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break;
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}
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break;
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case 11: // Waiting for SEND OK or ERROR to complete so we can closeAfter
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if (millis()-loopTimeoutStart > LOOP_TIMEOUT) {
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if (millis() - loopTimeoutStart > LOOP_TIMEOUT) {
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DIAG(F("\nWifi TIMEOUT on wait for SEND OK or ERROR\n"));
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loopstate=0; // go back to +IPD
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loopstate = 0; // go back to +IPD
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break;
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}
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if (ch=='K') { // assume its in SEND OK
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StringFormatter::send(wifiStream,F("AT+CIPCLOSE=%d\r\n"),connectionId);
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loopstate=0; // wait for +IPD
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if (ch == 'K') { // assume its in SEND OK
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StringFormatter::send(wifiStream, F("AT+CIPCLOSE=%d\r\n"), connectionId);
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loopstate = 0; // wait for +IPD
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}
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break;
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case 12: // Waiting for OK after send busy
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if (ch == 'K') { // assume its in SEND OK
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DIAG(F("\n\n WIFI BUSY RETRYING SEND \n"));
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StringFormatter::send(wifiStream, F("AT+CIPSEND=%d,%d\r\n"), connectionId, streamer.available() - 1);
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loopTimeoutStart = millis();
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loopstate = 10; // non-blocking loop waits for > before sending
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break;
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}
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break;
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} // switch
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} // while
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if (loopstate!=99) return;
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if (loopstate != 99) return;
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// AT this point we have read an incoming message into the buffer
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streamer.print('\0'); // null the end of the buffer so we can treat it as a string
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DIAG(F("\n%d Wifi(%d)<-[%e]\n"),millis(),connectionId,buffer);
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streamer.setBufferContentPosition(0,0); // reset write position to start of buffer
|
||||
DIAG(F("\n%l Wifi(%d)<-[%e]\n"), millis(),connectionId, buffer);
|
||||
streamer.setBufferContentPosition(0, 0); // reset write position to start of buffer
|
||||
// SIDE EFFECT WARNING:::
|
||||
// We know that parser will read the entire buffer before starting to write to it.
|
||||
// Otherwise we would have to copy the buffer elsewhere and RAM is in short supply.
|
||||
|
||||
closeAfter=false;
|
||||
closeAfter = false;
|
||||
|
||||
// Intercept HTTP requests
|
||||
if (isHTTP()) {
|
||||
if (httpCallback) httpCallback(&streamer,buffer);
|
||||
if (httpCallback) httpCallback(&streamer, buffer);
|
||||
else {
|
||||
StringFormatter::send(streamer,F("HTTP/1.1 404 Not Found\nContent-Type: text/html\nConnnection: close\n\n"));
|
||||
StringFormatter::send(streamer,F("<html><body>This is <b>not</b> a web server.<br/></body></html>"));
|
||||
StringFormatter::send(streamer, F("HTTP/1.1 404 Not Found\nContent-Type: text/html\nConnnection: close\n\n"));
|
||||
StringFormatter::send(streamer, F("<html><body>This is <b>not</b> a web server.<br/></body></html>"));
|
||||
}
|
||||
closeAfter=true;
|
||||
closeAfter = true;
|
||||
}
|
||||
else if (buffer[0]=='<') parser.parse(&streamer,buffer, true); // tell JMRI parser that ACKS are blocking because we can't handle the async
|
||||
else if (buffer[0] == '<') parser.parse(&streamer, buffer, true); // tell JMRI parser that ACKS are blocking because we can't handle the async
|
||||
|
||||
else WiThrottle::getThrottle(connectionId)->parse(streamer, buffer);
|
||||
|
||||
if (streamer.available()==0) {
|
||||
if (streamer.available() == 0) {
|
||||
// No reply
|
||||
if (closeAfter) StringFormatter::send(wifiStream,F("AT+CIPCLOSE=%d\r\n"),connectionId);
|
||||
loopstate=0; // go back to waiting for +IPD
|
||||
if (closeAfter) StringFormatter::send(wifiStream, F("AT+CIPCLOSE=%d\r\n"), connectionId);
|
||||
loopstate = 0; // go back to waiting for +IPD
|
||||
return;
|
||||
}
|
||||
// prepare to send reply
|
||||
streamer.print('\0'); // null the end of the buffer so we can treat it as a string
|
||||
DIAG(F("%d WiFi(%d)->[%e] l(%d)\n"),millis(),connectionId,buffer,streamer.available()-1);
|
||||
StringFormatter::send(wifiStream,F("AT+CIPSEND=%d,%d\r\n"),connectionId,streamer.available()-1);
|
||||
loopTimeoutStart=millis();
|
||||
loopstate=10; // non-blocking loop waits for > before sending
|
||||
}
|
||||
DIAG(F("%l WiFi(%d)->[%e] l(%d)\n"), millis(), connectionId, buffer, streamer.available() - 1);
|
||||
StringFormatter::send(wifiStream, F("AT+CIPSEND=%d,%d\r\n"), connectionId, streamer.available() - 1);
|
||||
loopTimeoutStart = millis();
|
||||
loopstate = 10; // non-blocking loop waits for > before sending
|
||||
}
|
||||
|
|
|
|||
|
|
@ -40,7 +40,7 @@ class WifiInterface {
|
|||
static DCCEXParser parser;
|
||||
static bool setup2( const __FlashStringHelper* SSSid, const __FlashStringHelper* password,
|
||||
const __FlashStringHelper* hostname, const __FlashStringHelper* servername, int port);
|
||||
static bool checkForOK(const unsigned int timeout, const char* waitfor, bool echo);
|
||||
static bool checkForOK(const unsigned int timeout, const char* waitfor, bool echo, bool escapeEcho=true);
|
||||
static bool isHTTP();
|
||||
static HTTP_CALLBACK httpCallback;
|
||||
static bool connected;
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user