Moved index.html from SPIFFS to program memory. Removed dependencies to SPIFFS. Also, we can use a different partition scheme with much more program space instead of reserving some of it for SPIFFS.

data/_version.txt

@@ -1 +0,0 @@
-1

deploy.sh

@@ -20,22 +20,17 @@ read -p "Version to generate: " VERSION
 
 OTA_VERSION=`grep "VERSION=" bin/update.manifest | cut -d"=" -f2`
 OTA_VERSION=$(( "$OTA_VERSION" + 1 ))
-echo "$OTA_VERSION" > data/_version.txt
 
 sed -i.bak "s/#define OTA_VERSION .*/#define OTA_VERSION $OTA_VERSION/" include/config.h include/config.sample.h
 rm include/config.h.bak include/config.sample.h.bak
 
 PLATFORMIO_BUILD_FLAGS='-DVERSION=\"$VERSION\"' pio run -e deploy -t buildprog || exit 1
-pio run -e deploy -t buildfs   || exit 1
 
 cp .pio/build/deploy/firmware.bin bin/firmware.bin || exit 1
-cp .pio/build/deploy/spiffs.bin bin/spiffs.bin || exit 1
 
 sed -i.bak "s/VERSION=.*/VERSION=$OTA_VERSION/" bin/update.manifest
 MD5=`md5sum --binary bin/firmware.bin | cut -d" " -f1`
 sed -i.bak "s/IMAGE_MD5=.*/IMAGE_MD5=$MD5/" bin/update.manifest
-MD5=`md5sum --binary bin/spiffs.bin | cut -d" " -f1`
-sed -i.bak "s/SPIFFS_MD5=.*/SPIFFS_MD5=$MD5/" bin/update.manifest
 rm bin/update.manifest.bak
 
 echo; echo; echo; echo; echo
@@ -44,7 +39,7 @@ git diff
 
 read -p "Press ENTER to continue, Ctrl-C to abort. " foo
 
-git add bin/firmware.bin bin/spiffs.bin bin/update.manifest
+git add bin/firmware.bin bin/update.manifest
 git commit -m "Deploying version $VERSION."
 git tag -a -m "Deploying version $VERSION" $VERSION
 git push --follow-tags

include/main.h

@@ -1,4 +1,5 @@
 #pragma once
 
-extern uint16_t spiffs_version;
 void wifi_connect();
+
+extern const uint8_t file_index_html_start[] asm("_binary_src_index_html_start");

include/updater.h

@@ -4,7 +4,7 @@
 
 class Updater {
 public:
-	static void run(uint16_t spiffs_version = 0);
+	static void run();
 	static bool do_update(int cmd, String url, String expected_md5);
 	static bool read_line(String* dst, HTTPClientWrapper* http, String expected_key);
 };

partitions.csv

@@ -0,0 +1,6 @@
+# Custom partition table without SPIFFS.
+# Name,   Type, SubType, Offset,  Size, Flags
+nvs,      data, nvs,     0x9000,  0x5000,
+otadata,  data, ota,     0xe000,  0x2000,
+app0,     app,  ota_0,   0x10000, 0x220000,
+app1,     app,  ota_1,   0x230000,0x220000,

platformio.ini

@@ -27,6 +27,8 @@ build_flags=!./build_version.sh
 lib_deps = ${extra.lib_deps}
 upload_port = /dev/cu.SLAB_USBtoUART
 monitor_speed = 74480
+board_build.embed_txtfiles = src/index.html
+board_build.partitions = partitions.csv
 ;monitor_port = /dev/cu.wchusbserial1420
 
 [env:deploy]
@@ -34,3 +36,5 @@ platform = espressif32
 board = esp-wrover-kit
 framework = arduino
 lib_deps = ${extra.lib_deps}
+board_build.embed_txtfiles = src/index.html
+board_build.partitions = partitions.csv

src/controller.cpp

@@ -378,7 +378,6 @@ String Controller::json() {
 	json["uptime"] = millis() / 1000;
 	json["free_heap"] = ESP.getFreeHeap();
 	JsonObject versions = json.createNestedObject("versions");
-	versions["spiffs"] = spiffs_version;
 	versions["ota"] = OTA_VERSION;
 	#ifdef VERSION
 	versions["release"] = VERSION;

src/http_server.cpp

@@ -1,7 +1,7 @@
 #include "http_server.h"
+#include "main.h"
 #include "spi_master.h"
 #include <ESPmDNS.h>
-#include <SPIFFS.h>
 
 HTTPServer::HTTPServer(Player* p, Controller* c) {
 	_player = p;
@@ -12,7 +12,7 @@ HTTPServer::HTTPServer(Player* p, Controller* c) {
 	ws->onEvent([&](AsyncWebSocket * server, AsyncWebSocketClient * client, AwsEventType type, void * arg, uint8_t *data, size_t len){this->_onEvent(server, client, type, arg, data, len);});
 	
 	_server->on("/", HTTP_GET, [&](AsyncWebServerRequest* req) {
-		req->send(SPIFFS, "/index.html", "text/html");
+		req->send(200, "text/html", (const char*)file_index_html_start);
 	});
 	_server->on("/upload", HTTP_POST, [](AsyncWebServerRequest* req) {
 		req->send(200); 

src/main.cpp

@@ -3,7 +3,6 @@
 #include <SD.h>
 #include <WiFi.h>
 #include <ESPmDNS.h>
-#include <SPIFFS.h>
 #include "main.h"
 #include "config.h"
 #include "controller.h"
@@ -20,8 +19,6 @@ HTTPServer* http_server;
 
 uint8_t SPIMaster::state = 0;
 
-uint16_t spiffs_version = 0;
-
 bool connect_to_wifi(String ssid, String pass) {
 	TRACE("Connecting to wifi \"%s\"...\n", ssid.c_str());
 	WiFi.mode(WIFI_AP_STA);
@@ -101,17 +98,6 @@ void setup() {
 	}
 	spi->select_sd(false);
 
-	DEBUG("Starting SPIFFS...\n");
-	SPIFFS.begin(true);
-	if (SPIFFS.exists("/_version.txt")) {
-		File f = SPIFFS.open("/_version.txt", "r");
-		spiffs_version = f.readString().toInt();
-		f.close();
-		DEBUG("SPIFFS filesystem version is %d.\n", spiffs_version);
-	} else {
-		DEBUG("No SPIFFS filesystem version found - setting spiffs_version to 0.\n");
-	}
-
 	DEBUG("Initializing PlaylistManager...\n");
 	pm = new PlaylistManager();
 	
@@ -122,10 +108,6 @@ void setup() {
 
     wifi_connect();
 	
-	
-	
-	
-	
 	MDNS.begin("esmp3");
 
     DEBUG("Setting up HTTP server...\n");
@@ -144,12 +126,6 @@ void setup() {
 		INFO("Could not fetch current time via NTP.\n");
 	}
 	
-	#ifdef OTA_UPDATE_URL
-	if (spiffs_version < OTA_VERSION) {
-		Updater::run(spiffs_version);
-	}
-	#endif
-
     INFO("Initialization completed.\n");
 }
 

src/updater.cpp

@@ -4,8 +4,7 @@
 #include "updater.h"
 #include "http_client_wrapper.h"
 
-void Updater::run(uint16_t spiffs_version) {
+void Updater::run() {
-	bool update_image = true;
 	DEBUG("Updater is running...\n");
 	HTTPClientWrapper* http = new HTTPClientWrapper();
 	DEBUG("Requesting update info...\n");
@@ -26,13 +25,8 @@ void Updater::run(uint16_t spiffs_version) {
 	}
 	DEBUG("Found version %d. My version is %d.\n", version, OTA_VERSION);
 	if (version <= OTA_VERSION) {
-		if (spiffs_version>0 && spiffs_version < version) {
-			update_image = false;
-			DEBUG("SPIFFS needs an update. Continuing.\n");
-		} else {
 		return;
 	}
-	}
 	
 	String image_path = "";
 	if (!read_line(&image_path, http, "IMAGE_PATH")) {
@@ -44,27 +38,15 @@ void Updater::run(uint16_t spiffs_version) {
 		return;
 	}
 
-	String spiffs_path = "";
-	if (!read_line(&spiffs_path, http, "SPIFFS_PATH")) {
-		return;
-	}
-	
-	String spiffs_md5 = "";
-	if (!read_line(&spiffs_md5, http, "SPIFFS_MD5")) {
-		return;
-	}
-	
 	http->close();
 	delete http;
 	
-	result = true;
+	if(do_update(U_FLASH, image_path, image_md5)) {
-	if (update_image) {
+		DEBUG("Update done. Rebooting...\n");
-		result = do_update(U_FLASH, image_path, image_md5);
+	} else {
+		DEBUG("Update failed. Rebooting...\n");
 	}
-	if (result) {
+	delay(1000);
-		do_update(U_SPIFFS, spiffs_path, spiffs_md5);
-	}
-	DEBUG("Done. Rebooting...\n");
 	ESP.restart();
 }