release espressif32 Arduino core 3.0.3 based on IDF 5.1.4

examples/espidf-arduino-littlefs/.gitignore

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+.pio
+.vscode

examples/espidf-arduino-littlefs/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.16.0)
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+project(espidf-arduino-littlefs)

examples/espidf-arduino-littlefs/README.md

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+# Arduino_IDF_LittleFS

examples/espidf-arduino-littlefs/data/file1.txt

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+aaa

examples/espidf-arduino-littlefs/data/testfolder/test2.txt

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+bbb

examples/espidf-arduino-littlefs/include/README

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+
+This directory is intended for project header files.
+
+A header file is a file containing C declarations and macro definitions
+to be shared between several project source files. You request the use of a
+header file in your project source file (C, C++, etc) located in `src` folder
+by including it, with the C preprocessing directive `#include'.
+
+```src/main.c
+
+#include "header.h"
+
+int main (void)
+{
+ ...
+}
+```
+
+Including a header file produces the same results as copying the header file
+into each source file that needs it. Such copying would be time-consuming
+and error-prone. With a header file, the related declarations appear
+in only one place. If they need to be changed, they can be changed in one
+place, and programs that include the header file will automatically use the
+new version when next recompiled. The header file eliminates the labor of
+finding and changing all the copies as well as the risk that a failure to
+find one copy will result in inconsistencies within a program.
+
+In C, the usual convention is to give header files names that end with `.h'.
+It is most portable to use only letters, digits, dashes, and underscores in
+header file names, and at most one dot.
+
+Read more about using header files in official GCC documentation:
+
+* Include Syntax
+* Include Operation
+* Once-Only Headers
+* Computed Includes
+
+https://gcc.gnu.org/onlinedocs/cpp/Header-Files.html

examples/espidf-arduino-littlefs/lib/README

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+
+This directory is intended for project specific (private) libraries.
+PlatformIO will compile them to static libraries and link into executable file.
+
+The source code of each library should be placed in a an own separate directory
+("lib/your_library_name/[here are source files]").
+
+For example, see a structure of the following two libraries `Foo` and `Bar`:
+
+|--lib
+|  |
+|  |--Bar
+|  |  |--docs
+|  |  |--examples
+|  |  |--src
+|  |     |- Bar.c
+|  |     |- Bar.h
+|  |  |- library.json (optional, custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html
+|  |
+|  |--Foo
+|  |  |- Foo.c
+|  |  |- Foo.h
+|  |
+|  |- README --> THIS FILE
+|
+|- platformio.ini
+|--src
+   |- main.c
+
+and a contents of `src/main.c`:
+```
+#include <Foo.h>
+#include <Bar.h>
+
+int main (void)
+{
+  ...
+}
+
+```
+
+PlatformIO Library Dependency Finder will find automatically dependent
+libraries scanning project source files.
+
+More information about PlatformIO Library Dependency Finder
+- https://docs.platformio.org/page/librarymanager/ldf.html

examples/espidf-arduino-littlefs/partitions_custom.csv

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+# Name,   Type, SubType, Offset,  Size, Flags
+nvs,      data, nvs,     0x9000,  0x5000,
+otadata,  data, ota,     0xe000,  0x2000,
+app0,     app,  ota_0,   0x10000, 0x140000,
+app1,     app,  ota_1,   0x150000,0x140000,
+spiffs,   data, spiffs,  0x290000,0x160000,
+coredump, data, coredump,0x3F0000,0x10000,

examples/espidf-arduino-littlefs/platformio.ini

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+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; https://docs.platformio.org/page/projectconf.html
+
+[env]
+platform = espressif32
+framework = arduino, espidf
+monitor_speed = 115200
+board_build.embed_txtfiles =
+    managed_components/espressif__esp_insights/server_certs/https_server.crt
+    managed_components/espressif__esp_rainmaker/server_certs/rmaker_mqtt_server.crt
+    managed_components/espressif__esp_rainmaker/server_certs/rmaker_claim_service_server.crt
+    managed_components/espressif__esp_rainmaker/server_certs/rmaker_ota_server.crt
+
+[env:esp32dev]
+board = esp32dev
+board_build.filesystem = littlefs
+board_build.partitions = partitions_custom.csv

examples/espidf-arduino-littlefs/sdkconfig.defaults

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+CONFIG_AUTOSTART_ARDUINO=y
+# CONFIG_WS2812_LED_ENABLE is not set
+CONFIG_FREERTOS_HZ=1000
+CONFIG_MBEDTLS_PSK_MODES=y
+CONFIG_MBEDTLS_KEY_EXCHANGE_PSK=y
+CONFIG_BOOTLOADER_COMPILER_OPTIMIZATION_SIZE=y
+CONFIG_COMPILER_OPTIMIZATION_SIZE=y
+CONFIG_ESPTOOLPY_FLASHSIZE_4MB=y
+CONFIG_ESPTOOLPY_HEADER_FLASHSIZE_UPDATE=y

examples/espidf-arduino-littlefs/src/CMakeLists.txt

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+# This file was automatically generated for projects
+# without default 'CMakeLists.txt' file.
+
+FILE(GLOB_RECURSE app_sources ${CMAKE_SOURCE_DIR}/src/*.*)
+
+idf_component_register(SRCS ${app_sources})

examples/espidf-arduino-littlefs/src/main.cpp

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+#include <Arduino.h>
+#include "FS.h"
+#include <LittleFS.h>
+#include <time.h>
+
+/* You only need to format LittleFS the first time you run a
+   test or else use the LITTLEFS plugin to create a partition
+   https://github.com/lorol/arduino-esp32littlefs-plugin */
+
+#define FORMAT_LITTLEFS_IF_FAILED true
+
+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.print(file.name());
+            time_t t= file.getLastWrite();
+            struct tm * tmstruct = localtime(&t);
+            Serial.printf("  LAST WRITE: %d-%02d-%02d %02d:%02d:%02d\n",(tmstruct->tm_year)+1900,( tmstruct->tm_mon)+1, tmstruct->tm_mday,tmstruct->tm_hour , tmstruct->tm_min, tmstruct->tm_sec);
+
+            if(levels){
+                listDir(fs, file.name(), levels -1);
+            }
+        } else {
+            Serial.print("  FILE: ");
+            Serial.print(file.name());
+            Serial.print("  SIZE: ");
+
+            Serial.print(file.size());
+            time_t t= file.getLastWrite();
+            struct tm * tmstruct = localtime(&t);
+            Serial.printf("  LAST WRITE: %d-%02d-%02d %02d:%02d:%02d\n",(tmstruct->tm_year)+1900,( tmstruct->tm_mon)+1, tmstruct->tm_mday,tmstruct->tm_hour , tmstruct->tm_min, tmstruct->tm_sec);
+        }
+        file = root.openNextFile();
+    }
+}
+
+void createDir(fs::FS &fs, const char * path){
+    Serial.printf("Creating Dir: %s\n", path);
+    if(fs.mkdir(path)){
+        Serial.println("Dir created");
+    } else {
+        Serial.println("mkdir failed");
+    }
+}
+
+void removeDir(fs::FS &fs, const char * path){
+    Serial.printf("Removing Dir: %s\n", path);
+    if(fs.rmdir(path)){
+        Serial.println("Dir removed");
+    } else {
+        Serial.println("rmdir failed");
+    }
+}
+
+void readFile(fs::FS &fs, const char * path){
+    Serial.printf("Reading file: %s\r\n", path);
+
+    File file = fs.open(path);
+    if(!file || file.isDirectory()){
+        Serial.println("- failed to open file for reading");
+        return;
+    }
+
+    Serial.println("- read from file:");
+    while(file.available()){
+        Serial.write(file.read());
+    }
+    file.close();
+}
+
+void writeFile(fs::FS &fs, const char * path, const char * message){
+    Serial.printf("Writing file: %s\r\n", path);
+
+    File file = fs.open(path, FILE_WRITE);
+    if(!file){
+        Serial.println("- failed to open file for writing");
+        return;
+    }
+    if(file.print(message)){
+        Serial.println("- file written");
+    } else {
+        Serial.println("- write failed");
+    }
+    file.close();
+}
+
+void appendFile(fs::FS &fs, const char * path, const char * message){
+    Serial.printf("Appending to file: %s\r\n", path);
+
+    File file = fs.open(path, FILE_APPEND);
+    if(!file){
+        Serial.println("- failed to open file for appending");
+        return;
+    }
+    if(file.print(message)){
+        Serial.println("- message appended");
+    } else {
+        Serial.println("- append failed");
+    }
+    file.close();
+}
+
+void renameFile(fs::FS &fs, const char * path1, const char * path2){
+    Serial.printf("Renaming file %s to %s\r\n", path1, path2);
+    if (fs.rename(path1, path2)) {
+        Serial.println("- file renamed");
+    } else {
+        Serial.println("- rename failed");
+    }
+}
+
+void deleteFile(fs::FS &fs, const char * path){
+    Serial.printf("Deleting file: %s\r\n", path);
+    if(fs.remove(path)){
+        Serial.println("- file deleted");
+    } else {
+        Serial.println("- delete failed");
+    }
+}
+
+// SPIFFS-like write and delete file
+
+// See: https://github.com/esp8266/Arduino/blob/master/libraries/LittleFS/src/LittleFS.cpp#L60
+void writeFile2(fs::FS &fs, const char * path, const char * message){
+    if(!fs.exists(path)){
+		if (strchr(path, '/')) {
+            Serial.printf("Create missing folders of: %s\r\n", path);
+			char *pathStr = strdup(path);
+			if (pathStr) {
+				char *ptr = strchr(pathStr, '/');
+				while (ptr) {
+					*ptr = 0;
+					fs.mkdir(pathStr);
+					*ptr = '/';
+					ptr = strchr(ptr+1, '/');
+				}
+			}
+			free(pathStr);
+		}
+    }
+
+    Serial.printf("Writing file to: %s\r\n", path);
+    File file = fs.open(path, FILE_WRITE);
+    if(!file){
+        Serial.println("- failed to open file for writing");
+        return;
+    }
+    if(file.print(message)){
+        Serial.println("- file written");
+    } else {
+        Serial.println("- write failed");
+    }
+    file.close();
+}
+
+// See:  https://github.com/esp8266/Arduino/blob/master/libraries/LittleFS/src/LittleFS.h#L149
+void deleteFile2(fs::FS &fs, const char * path){
+    Serial.printf("Deleting file and empty folders on path: %s\r\n", path);
+
+    if(fs.remove(path)){
+        Serial.println("- file deleted");
+    } else {
+        Serial.println("- delete failed");
+    }
+
+    char *pathStr = strdup(path);
+    if (pathStr) {
+        char *ptr = strrchr(pathStr, '/');
+        if (ptr) {
+            Serial.printf("Removing all empty folders on path: %s\r\n", path);
+        }
+        while (ptr) {
+            *ptr = 0;
+            fs.rmdir(pathStr);
+            ptr = strrchr(pathStr, '/');
+        }
+        free(pathStr);
+    }
+}
+
+void testFileIO(fs::FS &fs, const char * path){
+    Serial.printf("Testing file I/O with %s\r\n", path);
+
+    static uint8_t buf[512];
+    size_t len = 0;
+    File file = fs.open(path, FILE_WRITE);
+    if(!file){
+        Serial.println("- failed to open file for writing");
+        return;
+    }
+
+    size_t i;
+    Serial.print("- writing" );
+    uint32_t start = millis();
+    for(i=0; i<2048; i++){
+        if ((i & 0x001F) == 0x001F){
+          Serial.print(".");
+        }
+        file.write(buf, 512);
+    }
+    Serial.println("");
+    uint32_t end = millis() - start;
+    Serial.printf(" - %u bytes written in %u ms\r\n", 2048 * 512, (unsigned int)end);
+    file.close();
+
+    file = fs.open(path);
+    start = millis();
+    end = start;
+    i = 0;
+    if(file && !file.isDirectory()){
+        len = file.size();
+        size_t flen = len;
+        start = millis();
+        Serial.print("- reading" );
+        while(len){
+            size_t toRead = len;
+            if(toRead > 512){
+                toRead = 512;
+            }
+            file.read(buf, toRead);
+            if ((i++ & 0x001F) == 0x001F){
+              Serial.print(".");
+            }
+            len -= toRead;
+        }
+        Serial.println("");
+        end = millis() - start;
+        Serial.printf("- %u bytes read in %u ms\r\n", flen, (unsigned int)end);
+        file.close();
+    } else {
+        Serial.println("- failed to open file for reading");
+    }
+}
+
+void setup(){
+    Serial.begin(115200);
+    if(!LittleFS.begin(FORMAT_LITTLEFS_IF_FAILED)){
+        Serial.println("LittleFS Mount Failed");
+        return;
+    }
+
+    listDir(LittleFS, "/", 0);
+	createDir(LittleFS, "/mydir");
+	writeFile(LittleFS, "/mydir/hello2.txt", "Hello2");
+  //writeFile(LittleFS, "/mydir/newdir2/newdir3/hello3.txt", "Hello3");
+    writeFile2(LittleFS, "/mydir/newdir2/newdir3/hello3.txt", "Hello3");
+	listDir(LittleFS, "/", 3);
+	deleteFile(LittleFS, "/mydir/hello2.txt");
+  //deleteFile(LittleFS, "/mydir/newdir2/newdir3/hello3.txt");
+    deleteFile2(LittleFS, "/mydir/newdir2/newdir3/hello3.txt");
+	removeDir(LittleFS, "/mydir");
+	listDir(LittleFS, "/", 3);
+    writeFile(LittleFS, "/hello.txt", "Hello ");
+    appendFile(LittleFS, "/hello.txt", "World!\r\n");
+    readFile(LittleFS, "/hello.txt");
+    renameFile(LittleFS, "/hello.txt", "/foo.txt");
+    readFile(LittleFS, "/foo.txt");
+    deleteFile(LittleFS, "/foo.txt");
+    testFileIO(LittleFS, "/test.txt");
+    deleteFile(LittleFS, "/test.txt");
+
+    Serial.println( "Test complete" );
+}
+
+void loop(){
+
+}