Failing to save content with the Elements.io sample

[eduardoarantes]

I am using a NodeMCU board and playing with the Elements.io sample

I had to modify the code slightly because it wasn't compiling. The changes were only on the headers import and they look like this:
The rest of the code remains exactly like https://github.com/Hieromon/AutoConnect/blob/master/examples/Elements/Elements.ino

`#if defined(ARDUINO_ARCH_ESP8266)
#include <ESP8266WiFi.h>
#include <ESP8266WebServer.h>
#include <ESP8266HTTPClient.h>
#include <ESP8266mDNS.h>
#define FORMAT_ON_FAIL
using WebServerClass = ESP8266WebServer;
#elif defined(ARDUINO_ARCH_ESP32)
#include <WiFi.h>
#include <WebServer.h>
#include <HTTPClient.h>
#include <ESPmDNS.h>
#define FORMAT_ON_FAIL true
using WebServerClass = WebServer;
#endif

#include <AutoConnect.h>

#include <LittleFS.h>
FS& FlashFS = LittleFS;`

The execution prints "Filesystem failed to open."

How do I troubleshoot this? Is there a way to collect more detailed information from the LittleFS library about the problem?

My platformio.ino looks like this:

[env:nodemcuv2] platform = espressif8266 board = nodemcuv2 framework = arduino lib_ldf_mode = deep+ monitor_speed = 115200 monitor_filters = direct lib_deps = hieromon/PageBuilder@^1.5.6 hieromon/AutoConnect@^1.4.2 build_flags = -DAC_USE_SPIFFS -DPB_USE_SPIFFS board_build.filesystem = littlefs

tks

[Hieromon]

Your specified board_build.filesystem=littlefs and filesystem identifiers for AutoConnect, and PageBuilder are different by build_flags = -DAC_USE_SPIFFS -DPB_USE_SPIFFS. It tells AutoConnect and PageBuilder to use SPIFFS.

The correct file system identifier for NodeMCUV2 with LittleFS is as follows:

build_flags = -DAC_USE_LITTLEFS -DPB_USE_LITTLEFS

See: https://hieromon.github.io/AutoConnect/filesystem.html

[Hieromon]

@eduardoarantes
Ok, I will try to diagnose the problem on my end. Please rebuild with the following platformio.ini. That way can get a debug trace with AC_DEBUG enabled:

framework = arduino
platform = espressif8266
board = nodemcuv2
board_build.filesystem = littlefs
lib_ldf_mode = deep
lib_deps =
	hieromon/PageBuilder@^1.5.6
	hieromon/AutoConnect@^1.4.2
build_flags =
	-DAC_DEBUG
	-DAC_USE_LITTLEFS
	-DPB_USE_LITTLEFS
upload_speed = 921600
monitor_speed = 115200
monitor_filters = esp8266_exception_decoder

Then, please post the following output. I will make a diagnosis based on the results.

• The output log of Dependency graph at build time with PlatformIO build
• Serial output log including AC_DEBUG trace during sketch execution

[eduardoarantes]

I couldn't set upload_speed = 921600. It didn't upload the sketch

Scanning dependencies... Dependency Graph |-- PageBuilder @ 1.5.6 | |-- ESP8266WiFi @ 1.0 | |-- ESP8266WebServer @ 1.0 | |-- LittleFS @ 0.1.0 |-- AutoConnect @ 1.4.2 | |-- PageBuilder @ 1.5.6 | | |-- ESP8266WiFi @ 1.0 | | |-- ESP8266WebServer @ 1.0 | | |-- LittleFS @ 0.1.0 | |-- ArduinoJson @ 6.20.1 | |-- ESP8266WiFi @ 1.0 | |-- ESP8266WebServer @ 1.0 | |-- DNSServer @ 1.1.1 | | |-- ESP8266WiFi @ 1.0 | |-- EEPROM @ 1.0 | |-- LittleFS @ 0.1.0 | |-- SD @ 2.0.0 | | |-- SDFS @ 0.1.0 | | | |-- SPI @ 1.0 | | | |-- ESP8266SdFat @ 2.1.1 | | | | |-- SPI @ 1.0 | | |-- SPI @ 1.0 | | |-- ESP8266SdFat @ 2.1.1 | | | |-- SPI @ 1.0 | |-- SDFS @ 0.1.0 | | |-- SPI @ 1.0 | | |-- ESP8266SdFat @ 2.1.1 | | | |-- SPI @ 1.0 | |-- SPI @ 1.0 | |-- ESP8266SdFat @ 2.1.1 | | |-- SPI @ 1.0 | |-- Ticker @ 1.0 | |-- ESP8266HTTPClient @ 1.2 | | |-- ESP8266WiFi @ 1.0 | |-- ESP8266httpUpdate @ 1.3 | | |-- ESP8266WiFi @ 1.0 | | |-- ESP8266HTTPClient @ 1.2 | | | |-- ESP8266WiFi @ 1.0 |-- ESP8266WiFi @ 1.0 |-- ESP8266WebServer @ 1.0 |-- ESP8266HTTPClient @ 1.2 | |-- ESP8266WiFi @ 1.0 |-- ESP8266mDNS @ 1.2 | |-- ESP8266WiFi @ 1.0 |-- DNSServer @ 1.1.1 | |-- ESP8266WiFi @ 1.0 |-- EEPROM @ 1.0 |-- LittleFS @ 0.1.0 |-- SD @ 2.0.0 | |-- SDFS @ 0.1.0 | | |-- SPI @ 1.0 | | |-- ESP8266SdFat @ 2.1.1 | | | |-- SPI @ 1.0 | |-- SPI @ 1.0 | |-- ESP8266SdFat @ 2.1.1 | | |-- SPI @ 1.0 |-- SDFS @ 0.1.0 | |-- SPI @ 1.0 | |-- ESP8266SdFat @ 2.1.1 | | |-- SPI @ 1.0 |-- SPI @ 1.0 |-- ESP8266SdFat @ 2.1.1 | |-- SPI @ 1.0 |-- Ticker @ 1.0 |-- ArduinoJson @ 6.20.1 |-- ESP8266httpUpdate @ 1.3 | |-- ESP8266WiFi @ 1.0 | |-- ESP8266HTTPClient @ 1.2 | | |-- ESP8266WiFi @ 1.0 Building in release mode Compiling .pio/build/nodemcuv2/src/Elements.ino.cpp.o Retrieving maximum program size .pio/build/nodemcuv2/firmware.elf Checking size .pio/build/nodemcuv2/firmware.elf Advanced Memory Usage is available via "PlatformIO Home > Project Inspect" RAM: [======= ] 70.7% (used 57916 bytes from 81920 bytes) Flash: [===== ] 49.8% (used 519931 bytes from 1044464 bytes)

[AC] Host:192.168.1.22,/elements,generated:/elements, allocated [AC] Host:192.168.1.22,/elements,already allocated [AC] CB in AHEAD /elements [AC] airconIP<4> of /elements loaded [AC] zoneId<4> of /elements loaded [AC] Host:192.168.1.22,/save,generated:/save, allocated [AC] Host:192.168.1.22,/save,already allocated [AC] fetch /elements, elements stored [AC] CB in AHEAD /save [AC] JSON buffer size:784

[Hieromon]

I don't see any signs of a problem. But there are too few [AC] logs. Have you truncated some of them?

it doesn't persist after resetting the board.

What phenomenon is your comment above specifically? Could it be that you are running out of memory?
The ESP8266 Arduino core has increased memory consumption since 3.1.0. This may cause some sketches to run out of memory. It can be determined, for example, by the following [AC] log:

[AC] Deserialize:NoMemory

See AutoConnect v1.4.2 Release note.

[eduardoarantes]

@Hieromon
I when trying to parse the json content of the saved file I got the "JSON de-serialization failed: NoMemory".

That is the reason.

I will read the Release note

[eduardoarantes]

@Hieromon ,

I realised the Out of memory error was when I was parsing the json.
I fixed that, and I can see the value has been stored.

It's just not re populating that page when it loads after restarting