update

Master/.devcontainer/Dockerfile

@@ -0,0 +1,13 @@
+ARG DOCKER_TAG=latest
+FROM espressif/idf:${DOCKER_TAG}
+
+ENV LC_ALL=C.UTF-8
+ENV LANG=C.UTF-8
+
+RUN apt-get update -y && apt-get install udev -y
+
+RUN echo "source /opt/esp/idf/export.sh > /dev/null 2>&1" >> ~/.bashrc
+
+ENTRYPOINT [ "/opt/esp/entrypoint.sh" ]
+
+CMD ["/bin/bash", "-c"]

Master/.devcontainer/devcontainer.json

@@ -0,0 +1,19 @@
+{
+	"name": "ESP-IDF QEMU",
+	"build": {
+		"dockerfile": "Dockerfile"
+	},
+	"customizations": {
+		"vscode": {
+			"settings": {
+				"terminal.integrated.defaultProfile.linux": "bash",
+				"idf.gitPath": "/usr/bin/git"
+			},
+			"extensions": [
+				"espressif.esp-idf-extension",
+				"espressif.esp-idf-web"
+			]
+		}
+	},
+	"runArgs": ["--privileged"]
+}

Master/.gitignore

@@ -0,0 +1,78 @@
+# macOS
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Directory metadata
+.directory
+
+# Temporary files
+*~
+*.swp
+*.swo
+*.bak
+*.tmp
+
+# Log files
+*.log
+
+# Build artifacts and directories
+**/build/
+build/
+*.o
+*.a
+*.out
+*.exe # For any host-side utilities compiled on Windows
+
+# ESP-IDF specific build outputs
+*.bin
+*.elf
+*.map
+flasher_args.json # Generated in build directory
+sdkconfig.old
+sdkconfig
+
+# ESP-IDF dependencies
+# For older versions or manual component management
+/components/.idf/
+**/components/.idf/
+# For modern ESP-IDF component manager
+managed_components/
+# If ESP-IDF tools are installed/referenced locally to the project
+.espressif/
+
+# CMake generated files
+CMakeCache.txt
+CMakeFiles/
+cmake_install.cmake
+install_manifest.txt
+CTestTestfile.cmake
+
+# Python environment files
+*.pyc
+*.pyo
+*.pyd
+__pycache__/
+*.egg-info/
+dist/
+
+# Virtual environment folders
+venv/
+.venv/
+env/
+
+# Language Servers
+.clangd/
+.ccls-cache/
+compile_commands.json
+
+# Windows specific
+Thumbs.db
+ehthumbs.db
+Desktop.ini
+
+# User-specific configuration files
+*.user
+*.workspace # General workspace files, can be from various tools
+*.suo       # Visual Studio Solution User Options
+*.sln.docstates # Visual Studio

Master/.vscode/c_cpp_properties.json

@@ -0,0 +1,19 @@
+{
+  "configurations": [
+    {
+      "name": "ESP-IDF",
+      "compilerPath": "c:\\Espressif\\tools\\tools\\xtensa-esp-elf\\esp-14.2.0_20241119\\xtensa-esp-elf\\bin\\xtensa-esp32-elf-gcc.exe",
+      "compileCommands": "${config:idf.buildPath}/compile_commands.json",
+      "includePath": [
+        "${workspaceFolder}/**"
+      ],
+      "browse": {
+        "path": [
+          "${workspaceFolder}"
+        ],
+        "limitSymbolsToIncludedHeaders": true
+      }
+    }
+  ],
+  "version": 4
+}

Master/.vscode/launch.json

@@ -0,0 +1,10 @@
+{
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "type": "gdbtarget",
+      "request": "attach",
+      "name": "Eclipse CDT GDB Adapter"
+    }
+  ]
+}

Master/.vscode/settings.json

@@ -0,0 +1,11 @@
+{
+  "C_Cpp.intelliSenseEngine": "default",
+  "idf.openOcdConfigs": [
+    "board/esp32-wrover-kit-3.3v.cfg"
+  ],
+  "idf.portWin": "detect",
+  "idf.currentSetup": "C:\\Users\\mahmo\\esp\\v5.4\\esp-idf",
+  "idf.customExtraVars": {
+    "IDF_TARGET": "esp32"
+  }
+}

Master/CMakeLists.txt

@@ -0,0 +1,6 @@
+# The following five lines of boilerplate have to be in your project's
+# CMakeLists in this exact order for cmake to work correctly
+cmake_minimum_required(VERSION 3.16)
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+project(Master)

Master/main/CMakeLists.txt

@@ -0,0 +1,2 @@
+idf_component_register(SRCS "main.c"
+                    INCLUDE_DIRS ".")

Master/main/main.c

@@ -0,0 +1,74 @@
+#include <stdio.h>
+#include <string.h>
+#include "esp_log.h"
+#include "driver/i2c.h"
+
+static const char *TAG = "i2c-master";
+
+
+#define I2C_MASTER_SCL_IO 22               /*!< gpio number for I2C master clock */
+#define I2C_MASTER_SDA_IO 21               /*!< gpio number for I2C master data  */
+#define I2C_MASTER_FREQ_HZ 100000        /*!< I2C master clock frequency */
+#define I2C_MASTER_TX_BUF_DISABLE 0                           /*!< I2C master doesn't need buffer */
+#define I2C_MASTER_RX_BUF_DISABLE 0                           /*!< I2C master doesn't need buffer */
+#define SLAVE_ADDRESS 0x0A
+
+#define WRITE_BIT I2C_MASTER_WRITE              /*!< I2C master write */
+#define READ_BIT I2C_MASTER_READ                /*!< I2C master read */
+#define ACK_CHECK_EN 0x1                        /*!< I2C master will check ack from slave*/
+#define ACK_CHECK_DIS 0x0                       /*!< I2C master will not check ack from slave */
+#define ACK_VAL 0x0                             /*!< I2C ack value */
+#define NACK_VAL 0x1                            /*!< I2C nack value */
+
+int i2c_master_port = 0;
+static esp_err_t i2c_master_init(void)
+{
+  
+    i2c_config_t conf = {
+        .mode = I2C_MODE_MASTER,
+        .sda_io_num = I2C_MASTER_SDA_IO,
+        .sda_pullup_en = GPIO_PULLUP_ENABLE,
+        .scl_io_num = I2C_MASTER_SCL_IO,
+        .scl_pullup_en = GPIO_PULLUP_ENABLE,
+        .master.clk_speed = I2C_MASTER_FREQ_HZ,
+        // .clk_flags = 0,          /*!< Optional, you can use I2C_SCLK_SRC_FLAG_* flags to choose i2c source clock here. */
+    };
+    esp_err_t err = i2c_param_config(i2c_master_port, &conf);
+    if (err != ESP_OK) {
+        return err;
+    }
+    return i2c_driver_install(i2c_master_port, conf.mode, I2C_MASTER_RX_BUF_DISABLE, I2C_MASTER_TX_BUF_DISABLE, 0);
+}
+
+static esp_err_t i2c_master_send(uint8_t message[], int len)
+{
+    ESP_LOGI(TAG, "Sending Message = %s", message);   
+    
+    esp_err_t ret; 
+    i2c_cmd_handle_t cmd = i2c_cmd_link_create();    
+    i2c_master_start(cmd);
+    i2c_master_write_byte(cmd, SLAVE_ADDRESS << 1 | WRITE_BIT, ACK_CHECK_EN);
+    i2c_master_write(cmd, message, len, ACK_CHECK_EN);
+    i2c_master_stop(cmd);
+    
+    ret = i2c_master_cmd_begin(i2c_master_port, cmd, 1000 / portTICK_PERIOD_MS);
+    i2c_cmd_link_delete(cmd);
+    return ret;
+}
+
+void app_main(void)
+{
+    const uint8_t  on_command[] = "LED_ON";
+    const uint8_t  off_command[] = "LED_OFF";
+    ESP_ERROR_CHECK(i2c_master_init());
+    ESP_LOGI(TAG, "I2C initialized successfully");
+
+    while(1)
+    {
+        i2c_master_send(on_command, sizeof(on_command));
+        vTaskDelay(1000/ portTICK_PERIOD_MS);
+        i2c_master_send(off_command, sizeof(off_command));
+        vTaskDelay(1000/ portTICK_PERIOD_MS);  
+    }
+    
+}