Working on adding a display.

include/Display.h

@@ -0,0 +1,34 @@
+#ifndef KIMODEM_DISPLAY_H
+#define KIMODEM_DISPLAY_H
+
+#include <Arduino.h>
+
+
+#define ANSI_CLEAR_SCREEN	"\33[2J"
+
+/*
+class Display {
+public:
+	Display();
+
+	void	Clear();
+	void	Draw();
+	bool	HasDisplay();
+
+	void	Print(const char *);
+	void	Println(const char *);
+	void	SetCursor(int16_t x, int16_t y);
+};
+*/
+
+#if defined(ADAFRUIT_OLED)
+#include "internal/DisplayAdafruitOLED.h"
+#else
+#include "internal/DisplayNone.h"
+#endif
+
+
+static Display	display;
+
+
+#endif

include/internal/DisplayAdafruitOLED.h

@@ -0,0 +1,26 @@
+#ifndef KIMODEM_ADAFRUIT_OLED_H
+#define KIMODEM_ADAFRUIT_OLED_H
+
+#include <Arduino.h>
+#include <SPI.h>
+#include <Wire.h>
+#include <Adafruit_SSD1306.h>
+
+class Display {
+public:
+	Display();
+
+	void	Clear();
+	void	Draw();
+	bool	HasDisplay();
+
+	void	Print(const char *);
+	void	Println(const char *);
+	void	SetCursor(int16_t x, int16_t y);
+private:
+	Adafruit_SSD1306	oled;
+};
+
+
+
+#endif

include/internal/DisplayNone.h

@@ -0,0 +1,20 @@
+#ifndef KIMODEM_DISPLAY_SERIAL
+#define KIMODEM_DISPLAY_SERIAL
+
+#include <Arduino.h>
+
+
+class Display {
+public:
+	Display() {};
+
+	void	Clear();
+	void	Draw();
+	bool	HasDisplay();
+
+	void	Print(const char *);
+	void	Println(const char *);
+	void	SetCursor(int16_t x, int16_t y);
+};
+
+#endif

include/prefs.h

@@ -6,8 +6,8 @@ namespace config {
 
 // Networking
 
-size_t	 LastSSID(char *ssid);
-void	 SetLastSSID(const char *ssid, size_t ssidlen);
+size_t	 LastSSID(char *ssid, size_t ssidlen);
+void	 SetLastSSID(const char *ssid);
 
 bool	 StartTryConnecting();
 void 	 SetStartTryConnecting(bool opt);

platformio.ini

@@ -8,11 +8,34 @@
 ; Please visit documentation for the other options and examples
 ; https://docs.platformio.org/page/projectconf.html
 
-[platformio]
-
-[env:sparkfun_esp32micromod]
-platform = espressif32
-board = sparkfun_esp32micromod
+[env]
 framework = arduino
+platform = espressif32
 monitor_speed = 115200
 extra_scripts = scripts/download_fs.py
+
+[env:featheresp32]
+board = featheresp32
+build_flags =
+;   -DDISPLAY_NONE
+  -DADAFRUIT_OLED
+lib_deps =
+  adafruit/Adafruit GFX Library@^1.11.8
+  adafruit/Adafruit SSD1306@^2.5.7
+
+[env:sparkfun_esp32micromod]
+board = sparkfun_esp32micromod
+build_flags =
+  -DSPARKFUN_HYPERDISPLAY
+  -DDISPLAY_NONE
+
+[env:d1mini]
+board = wemos_d1_mini32
+build_flags =
+  -DDISPLAY_NONE
+
+[env:huzzah]
+platform = espressif8266
+board = huzzah
+build_flags =
+  -DDISPLAY_NONE

src/DisplayAdafruitOLED.cc

@@ -0,0 +1,68 @@
+#if defined(ADAFRUIT_OLED)
+#include <Arduino.h>
+#include <SPI.h>
+#include <Wire.h>
+#include <Adafruit_GFX.h>
+#include <Adafruit_SSD1306.h>
+
+#include "internal/DisplayAdafruitOLED.h"
+
+
+static Adafruit_SSD1306		oled(SSD1306_SWITCHCAPVCC, 0x3C);
+
+
+
+Display::Display()
+	: oled(oled)
+{
+	Serial.println("initialized display");
+	oled.setTextSize(1);
+	oled.setTextColor(SSD1306_WHITE);
+}
+
+	
+void
+Display::Clear()
+{
+	this->oled.clearDisplay();
+	this->SetCursor(0, 0);
+	this->Draw();
+}
+
+
+void
+Display::Draw()
+{
+	this->oled.display();
+}
+
+
+bool
+Display::HasDisplay()
+{
+	return true;
+}
+
+
+void
+Display::Print(const char *s)
+{
+	this->oled.print(s);
+}
+
+
+void
+Display::Println(const char *s)
+{
+	this->oled.println(s);
+}
+
+
+void
+Display::SetCursor(int16_t x, int16_t y)
+{
+	this->oled.setCursor(x, y);
+}
+
+
+#endif

src/DisplayNone.cc

@@ -0,0 +1,22 @@
+#if defined(NO_DISPLAY)
+
+#include "Display.h"
+#include "internal/DisplayNone.h"
+
+void
+Display::Clear()
+{
+	Serial.println("\33[2J");
+}
+
+
+void	Display::Draw() {}
+bool	Display::HasDisplay() { return false; }
+
+
+void	Display::Print(const char *s) {};
+void	Display::Println(const char *) {};
+void	Display::SetCursor(int16_t x, int16_t y) {};
+
+
+#endif

src/WiFiMgr.cc

@@ -3,9 +3,13 @@
 #include <string.h>
 
 #include "Dictionary.h"
+#include "Display.h"
 #include "TLV.h"
+#include "prefs.h"
+
 #include "WiFiMgr.h"
 
+
 #define MAX_WAIT	10000
 #define CONN_WAIT	250
 
@@ -37,6 +41,14 @@ tryConnect(const char *ssid, const char *wpakey)
 	if (WiFi.status() == WL_CONNECTED) {
 		Serial.print("MODEM ADDR ");
 		Serial.println(WiFi.localIP());
+		
+		display.Clear();
+		display.Print("SSID: ");
+		display.Println(ssid);
+		display.Print("IP: ");
+		display.Println(WiFi.localIP().toString().c_str());
+		display.Draw();
+
 		return true;
 	}
 
@@ -52,6 +64,18 @@ TryConnect(Dictionary &pb)
 	TLV::Record	 wpakey;
 	uint8_t		*cursor;
 
+	if ((ssid.Len = config::LastSSID(ssid.Val, 32)) != 0) {
+		Serial.print("LAST SSID: ");
+		Serial.println(ssid.Val);
+		if (pb.Lookup(ssid.Val, ssid.Len, wpakey)) {
+			if (tryConnect((const char *)ssid.Val, (const char *)wpakey.Val)) {
+				return true;
+			}
+		} else {
+			Serial.println("WPAKEY NOT FOUND");
+		}
+	}
+
 	while ((cursor != NULL) && (cursor[0] != TAG_EMPTY)) {
 		TLV::ReadFromMemory(ssid, cursor);
 		TLV::SkipRecord(ssid, cursor);
@@ -80,13 +104,15 @@ tryConnect(Dictionary &pb, int network)
 	}
 
 	Serial.print("MODEM: CHECK ");
-	Serial.println(ssid);
+	Serial.print(ssid);
+	Serial.print(": ");
 
 	if (!pb.Lookup(ssid, uint8_t(ssidLen), password)) {
-		Serial.println("SSID NOT IN PHONEBOOK");
+		Serial.println("NOT FOUND");
 		return false;
 	}
 
+	Serial.println("CONNECTING");
 	return tryConnect(ssid, password.Val);
 }
 

src/main.cc

@@ -3,6 +3,7 @@
 
 #include "Arena.h"
 #include "Dictionary.h"
+#include "Display.h"
 #include "WiFiMgr.h"
 #include "prefs.h"
 #include "homenet.h"
@@ -33,6 +34,8 @@ setupPhonebook()
 		}
 
 		pbFile.close();
+		config::SetLastSSID(HOME_SSID);
+
 		return ok;
 	}	
 	fileSize = fileSize > PHONEBOOK_SIZE ? PHONEBOOK_SIZE : fileSize;
@@ -55,10 +58,14 @@ void setup() {
 	Serial.begin(115200);
 	while (!Serial) ;
 
+	display.Clear();
+
 	Serial.println("MODEM BOOT");
 	InitializeArena(arena);
 	NewStaticArena(arena, phonebookBuffer, PHONEBOOK_SIZE);
 
+	while (true);
+
 	if (!SPIFFS.begin(true) && !SPIFFS.begin(false)) {
 		Serial.println("SPIFFS BEGIN FAIL");
 		while (true) ;
@@ -71,7 +78,6 @@ void setup() {
 		}
 	}
 
-
 	Serial.println("MODEM READY");
 }
 

src/prefs.cc

@@ -24,8 +24,16 @@ checkReady()
 size_t
 LastSSID(char *ssid, size_t ssidlen)
 {
+	size_t	len;
 	checkReady();
-	return preferences.getString("SSID", ssid, ssidlen);
+	len = preferences.getString("SSID", ssid, ssidlen);
+	if (len > 0) {
+		// preferences.getString includes the null byte in 
+		// the result. c.f. DQTNA.
+		len--;
+	}
+
+	return len;
 }