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CommandStation-EX/Wifi_NINA.cpp
travis-farmer 1d881a4b43
cleaning up
2023-11-18 14:07:19 -05:00

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/*
© 2023 Paul M. Antoine
© 2021 Harald Barth
© 2023 Nathan Kellenicki
© 2023 Travis Farmer
© 2023 Chris Harlow
This file is part of CommandStation-EX
This is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
It is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with CommandStation. If not, see <https://www.gnu.org/licenses/>.
*/
#include "defines.h"
#ifdef WIFI_NINA || GIGA_WIFI
//#include <vector>
#include <SPI.h>
#ifndef ARDUINO_GIGA
#include <WifiNINA.h>
#else
#if defined(GIGA_WIFI)
#include <WiFi.h>
#else
#include <WiFiNINA.h>
#endif
#endif
#include "Wifi_NINA.h"
#include "DIAG.h"
#include "RingStream.h"
#include "CommandDistributor.h"
#include "WiThrottle.h"
// Configure the pins used for the ESP32 connection
#if !defined(ARDUINO_GIGA) && defined(ARDUINO_ARCH_STM32) // Here my STM32 configuration
#define SPIWIFI SPI // The SPI port
#define SPIWIFI_SS PA4 // Chip select pin
#define ESP32_RESETN PA10 // Reset pin
#define SPIWIFI_ACK PB3 // a.k.a BUSY or READY pin
#define ESP32_GPIO0 -1
#elif defined(ARDUINO_GIGA)
#define SPIWIFI SPI
#define SPIWIFI_SS 10 // Chip select pin
#define SPIWIFI_ACK 7 // a.k.a BUSY or READY pin
#define ESP32_RESETN 5 // Reset pin
#define ESP32_GPIO0 -1 // Not connected
#else
#warning "WiFiNINA has no SPI port or pin allocations for this archiecture yet!"
#endif
#define MAX_CLIENTS 10
static WiFiServer *server = NULL;
static RingStream *outboundRing = new RingStream(10240);
static bool APmode = false;
static IPAddress ip;
char asciitolower(char in) {
if (in <= 'Z' && in >= 'A')
return in - ('Z' - 'z');
return in;
}
bool WifiNINA::setup(const char *SSid,
const char *password,
const char *hostname,
int port,
const byte channel,
const bool forceAP) {
bool havePassword = true;
bool haveSSID = true;
bool wifiUp = false;
uint8_t tries = 40;
// Set up the pins!
#if !defined(GIGA_WIFI)
WiFi.setPins(SPIWIFI_SS, SPIWIFI_ACK, ESP32_RESETN, ESP32_GPIO0, &SPIWIFI);
#endif
// check for the WiFi module:
if (WiFi.status() == WL_NO_MODULE) {
DIAG(F("Communication with WiFi module failed!"));
// don't continue for now!
while (true);
}
// Print firmware version on the module
String fv = WiFi.firmwareVersion();
DIAG(F("WifiNINA Firmware version found:%s"), fv.c_str());
const char *yourNetwork = "Your network ";
if (strncmp(yourNetwork, SSid, 13) == 0 || strncmp("", SSid, 13) == 0)
haveSSID = false;
if (strncmp(yourNetwork, password, 13) == 0 || strncmp("", password, 13) == 0)
havePassword = false;
if (haveSSID && havePassword && !forceAP) {
#ifndef ARDUINO_GIGA
WiFi.setHostname(hostname); // Strangely does not work unless we do it HERE!
#endif
// WiFi.mode(WIFI_STA);
// WiFi.setAutoReconnect(true);
WiFi.begin(SSid, password);
while (WiFi.status() != WL_CONNECTED && tries) {
Serial.print('.');
tries--;
delay(500);
}
if (WiFi.status() == WL_CONNECTED) {
IPAddress ip = WiFi.localIP();
DIAG(F("Wifi STA IP %d.%d.%d.%d"), ip[0], ip[1], ip[2], ip[3]);
wifiUp = true;
} else {
DIAG(F("Could not connect to Wifi SSID %s"),SSid);
DIAG(F("Forcing one more Wifi restart"));
// esp_wifi_start();
// esp_wifi_connect();
tries=40;
while (WiFi.status() != WL_CONNECTED && tries) {
Serial.print('.');
tries--;
delay(500);
}
if (WiFi.status() == WL_CONNECTED) {
ip = WiFi.localIP();
DIAG(F("Wifi STA IP 2nd try %d.%d.%d.%d"), ip[0], ip[1], ip[2], ip[3]);
wifiUp = true;
} else {
DIAG(F("Wifi STA mode FAIL. Will revert to AP mode"));
haveSSID=false;
}
}
}
if (!haveSSID || forceAP) {
// prepare all strings
String strSSID(forceAP ? SSid : "DCCEX_");
String strPass(forceAP ? password : "PASS_");
if (!forceAP) {
byte mac[6];
WiFi.macAddress(mac);
String strMac;
for (int i = 0; i++; i < 6) {
strMac += String(mac[i], HEX);
}
DIAG(F("MAC address: %x:%x:%x:%x:%x:%x"), mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
strMac.remove(0,9);
strMac.replace(":","");
strMac.replace(":","");
// convert mac addr hex chars to lower case to be compatible with AT software
//std::transform(strMac.begin(), strMac.end(), strMac.begin(), asciitolower); ///TJF: why does this fail compile with WiFiNINA, but not giga WiFi???
strSSID.concat(strMac);
strPass.concat(strMac);
}
if (WiFi.beginAP(strSSID.c_str(),
havePassword ? password : strPass.c_str(),
channel) == WL_AP_LISTENING) {
DIAG(F("Wifi AP SSID %s PASS %s"),strSSID.c_str(),havePassword ? password : strPass.c_str());
ip = WiFi.localIP();
DIAG(F("Wifi AP IP %d.%d.%d.%d"),ip[0], ip[1], ip[2], ip[3]);
wifiUp = true;
APmode = true;
} else {
DIAG(F("Could not set up AP with Wifi SSID %s"),strSSID.c_str());
}
}
if (!wifiUp) {
DIAG(F("Wifi setup all fail (STA and AP mode)"));
// no idea to go on
return false;
}
// TODO: we need to run the MDNS_Generic server I suspect
// // Now Wifi is up, register the mDNS service
// if(!MDNS.begin(hostname)) {
// DIAG(F("Wifi setup failed to start mDNS"));
// }
// if(!MDNS.addService("withrottle", "tcp", 2560)) {
// DIAG(F("Wifi setup failed to add withrottle service to mDNS"));
// }
server = new WiFiServer(port); // start listening on tcp port
server->begin();
// server started here
DIAG(F("Server will be started on port %d"),port);
ip = WiFi.localIP();
LCD(4,F("IP: %d.%d.%d.%d"), ip[0], ip[1], ip[2], ip[3]);
LCD(5,F("Port:%d"), port);
return true;
}
const char *wlerror[] = {
"WL_IDLE_STATUS",
"WL_NO_SSID_AVAIL",
"WL_SCAN_COMPLETED",
"WL_CONNECTED",
"WL_CONNECT_FAILED",
"WL_CONNECTION_LOST",
"WL_DISCONNECTED"
};
WiFiClient * clients[MAX_CLIENTS]; // nulled in setup
void WifiNINA::checkForNewClient() {
auto newClient=server->available();
if (!newClient) return;
for (byte clientId=0; clientId<MAX_CLIENTS; clientId++){
if (!clients[clientId]) {
clients[clientId]= new WiFiClient(newClient); // use this slot
DIAG(F("New client connected to slot %d"),clientId); //TJF: brought in for debugging.
return;
}
}
}
void WifiNINA::checkForLostClients() {
for (byte clientId=0; clientId<MAX_CLIENTS; clientId++){
auto c=clients[clientId];
if(c && !c->connected()) {
clients[clientId]->stop();
DIAG(F("Remove client %d"), clientId);
CommandDistributor::forget(clientId);
clients[clientId]=nullptr;
}
}
}
void WifiNINA::checkForClientInput() {
// Find a client providing input
for (byte clientId=0; clientId<MAX_CLIENTS; clientId++){
auto c=clients[clientId];
if(c) {
auto len=c->available();
if (len) {
// read data from client
byte cmd[len+1];
for(int i=0; i<len; i++) cmd[i]=c->read();
cmd[len]=0x00;
CommandDistributor::parse(clientId,cmd,outboundRing);
}
}
}
}
void WifiNINA::checkForClientOutput() {
// something to write out?
auto clientId=outboundRing->read();
if (clientId < 0) return;
auto replySize=outboundRing->count();
if (replySize==0) return; // nothing to send
auto c=clients[clientId];
if (!c) {
// client is gone, throw away msg
for (int i=0;i<replySize;i++) outboundRing->read();
DIAG(F("gone, drop message.")); //TJF: only for diag
return;
}
// emit data to the client object
for (int i=0;i<replySize;i++) c->write(outboundRing->read());
}
void WifiNINA::loop() {
checkForLostClients(); // ***
checkForNewClient();
checkForClientInput(); // ***
WiThrottle::loop(outboundRing); // allow withrottle to broadcast if needed
checkForClientOutput();
}
#endif // WIFI_NINA
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