Description
Hardware:
Board: ESP-32-C3
Core Installation version: 2.0.0
IDE name: Visual Studio/Visual Micro
Flash Frequency: 80Mhz
PSRAM enabled: no
Upload Speed: 921600
Computer OS: Windows 10
Description:
I don't know if this is the ESP code or AsyncWebServer code that is causing the problem but...
When using the ESP-C3 with the AsyncWebServer and trying to serve a static file with server.serveStatic("/", LittleFS, "/"); the device crashes and resets.
Compiling and running the same code on an ESP32 works correctly with no crash.
Serving a file using server.on... works ok, no crash.
i.e. opening http://192.168.0.116/deb works ok
opening http://192.168.0.116/debug1.html crashes (debug1.html does not depend on any other LittleFS download, js, png etc..)
Sketch:
You need to create and upload some web pages using makelittlefs.exe to test this out. The code is from the simple_server.ino sample modified to serve files from LittleFS.
I'm running mklittlefs version: 0.2.3-27-gc41e51a
#include <Arduino.h>
#ifdef ESP32
#include <WiFi.h>
#include <AsyncTCP.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#endif
#include <ESPAsyncWebServer.h>
#include "LITTLEFS.h"
AsyncWebServer server(80);
const char* ssid = "YOUR_SSID";
const char* password = "YOUR_PASSWORD";
const char* PARAM_MESSAGE = "message";
void listDir(fs::FS& fs, const char* dirname, uint8_t levels) {
Serial.printf("Listing directory: %s\r\n", dirname);
File root = fs.open(dirname);
if (!root) {
Serial.println("- failed to open directory");
return;
}
if (!root.isDirectory()) {
Serial.println(" - not a directory");
return;
}
File file = root.openNextFile();
while (file) {
if (file.isDirectory()) {
Serial.print(" DIR : ");
Serial.println(file.name());
if (levels) {
listDir(fs, file.path(), levels - 1);
}
}
else {
Serial.print(" FILE: ");
Serial.print(file.name());
Serial.print("\tSIZE: ");
Serial.println(file.size());
}
file = root.openNextFile();
}
}
void notFound(AsyncWebServerRequest* request) {
request->send(404, "text/plain", "Not found");
}
void setup() {
Serial.begin(115200);
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
if (WiFi.waitForConnectResult() != WL_CONNECTED) {
Serial.printf("WiFi Failed!\n");
return;
}
Serial.print("IP Address: ");
Serial.println(WiFi.localIP());
// Format FileFS if not yet
if (!LittleFS.begin())
{
Serial.println("LITTLEFS failed! AutoFormatting.");
LittleFS.format();
}
Serial.println("Level 1:");
listDir(LittleFS, "/", 1);
server.on("/deb", HTTP_GET, [](AsyncWebServerRequest* request) {
request->send(LittleFS, "/debug1.html");
});
server.on("/", HTTP_GET, [](AsyncWebServerRequest* request) {
request->send(200, "text/plain", "Hello, world");
});
// Send a GET request to <IP>/get?message=<message>
server.on("/get", HTTP_GET, [](AsyncWebServerRequest* request) {
String message;
if (request->hasParam(PARAM_MESSAGE)) {
message = request->getParam(PARAM_MESSAGE)->value();
}
else {
message = "No message sent";
}
request->send(200, "text/plain", "Hello, GET: " + message);
});
// Send a POST request to <IP>/post with a form field message set to <message>
server.on("/post", HTTP_POST, [](AsyncWebServerRequest* request) {
String message;
if (request->hasParam(PARAM_MESSAGE, true)) {
message = request->getParam(PARAM_MESSAGE, true)->value();
}
else {
message = "No message sent";
}
request->send(200, "text/plain", "Hello, POST: " + message);
});
server.serveStatic("/", LittleFS, "/");
server.onNotFound(notFound);
server.begin();
}
void loop() {
}Debug Messages:
Trying to open http://192.168.0.126/debug1.html throws error:
Guru Meditation Error: Core 0 panic'ed (Load access fault). Exception was unhandled.
Listing directory: /js
FILE: jquery.min.js.gz SIZE: 29240
Trying to open http://192.168.0.126/js/jquery.min.js throws the following error:
[ 41735][E][vfs_api.cpp:64] open(): /littlefs/js/jquery.min.js does not exist
Guru Meditation Error: Core 0 panic'ed (Load access fault). Exception was unhandled.
Core 0 register dump:
MEPC : 0x4200862a RA : 0x4200868c SP : 0x3fcad5f0 GP : 0x3fc8e800
TP : 0x3fc98bcc T0 : 0x4005890e T1 : 0x4038c298 T2 : 0x00300010
S0/FP : 0x3fca7764 S1 : 0x3fc961a4 A0 : 0x00000001 A1 : 0x98940ca0
A2 : 0x3fca7764 A3 : 0x00000001 A4 : 0x3fc96000 A5 : 0x3fc961a4
A6 : 0x3fe00000 A7 : 0x00000008 S2 : 0x3fca81dc S3 : 0x3fca81ec
S4 : 0x3fc961a4 S5 : 0x00000000 S6 : 0x00000000 S7 : 0x00000000
S8 : 0x00000000 S9 : 0x00000000 S10 : 0x00000000 S11 : 0x00000000
T3 : 0x0070015a T4 : 0x7759990c T5 : 0x00601700 T6 : 0x00723800
MSTATUS : 0x00001881 MTVEC : 0x40380001 MCAUSE : 0x00000005 MTVAL : 0x98940caf
MHARTID : 0x00000000
Stack memory:
3fcad5f0: 0x0a002c00 0x06ff0000 0x3fc961a4 0x00000000 0x00000000 0x00000000 0x00000000 0x0300b29e