initial commit

.gitignore

@@ -0,0 +1,3 @@
+build
+managed_components
+sdkconfig.old

.vscode/settings.json

@@ -0,0 +1,4 @@
+{
+    "idf.flashType": "UART",
+    "idf.port": "/dev/ttyACM0"
+}

CMakeLists.txt

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+# For more information about build system see
+# https://docs.espressif.com/projects/esp-idf/en/latest/api-guides/build-system.html
+# 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(main)

README.md

@@ -0,0 +1,63 @@
+| Supported Targets | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-C6 | ESP32-H2 | ESP32-S2 | ESP32-S3 |
+| ----------------- | ----- | -------- | -------- | -------- | -------- | -------- | -------- |
+
+# _Hello world example_
+
+This is the simplest buildable example made to be used as a template for new projects running Arduino-esp32 as an ESP-IDF component.
+See [Arduino-esp32](https://components.espressif.com/components/espressif/arduino-esp32) in ESP Registry.
+
+## How to use example
+
+To create a ESP-IDF project from this example with the latest release of Arduino-esp32, you can simply run command: `idf.py create-project-from-example "espressif/arduino-esp32:hello_world"`.
+ESP-IDF will download all dependencies needed from the component registry and setup the project for you.
+
+If you want to use cloned Arduino-esp32 repository, you can build this example directly.
+Go to the example folder `arduino-esp32/idf_component_examples/hello_world`.
+First you need to comment line 6 `pre_release: true` in examples `/main/idf_component.yml`.
+Then just run command: `idf.py build`.
+
+## Example folder contents
+
+The project **hello_world** contains one source file in C++ language [main.cpp](main/main.cpp). The file is located in folder [main](main).
+
+ESP-IDF projects are built using CMake. The project build configuration is contained in `CMakeLists.txt`
+files that provide set of directives and instructions describing the project's source files and targets
+(executable, library, or both).
+
+Below is short explanation of remaining files in the project folder.
+
+```
+├── CMakeLists.txt
+├── main
+│   ├── CMakeLists.txt
+│   ├── idf_component.yml
+│   └── main.cpp
+└── README.md                  This is the file you are currently reading
+```
+
+## How to add Arduino libraries
+
+In the project create folder `components/` and clone the library there.
+In the library folder create new CMakeLists.txt file, add lines shown below to the file and edit the SRCS to match the library source files.
+
+```
+idf_component_register(SRCS "user_library.cpp" "another_source.c"
+                      INCLUDE_DIRS "."
+                      REQUIRES arduino-esp32
+                      )
+```
+
+Below is structure of the project folder with the Arduino libraries.
+
+```
+├── CMakeLists.txt
+├── components
+│   ├── user_library
+│   │   ├── CMakeLists.txt     This needs to be added
+│   │   ├── ...
+├── main
+│   ├── CMakeLists.txt
+│   ├── idf_component.yml
+│   └── main.cpp
+└── README.md                  This is the file you are currently reading
+```

dependencies.lock

@@ -0,0 +1,485 @@
+dependencies:
+  chmorgan/esp-libhelix-mp3:
+    component_hash: cbb76089dc2c5749f7b470e2e70aedc44c9da519e04eb9a67d4c7ec275229e53
+    dependencies:
+    - name: idf
+      require: private
+      version: '>=4.1.0'
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 1.0.3
+  espressif/arduino-esp32:
+    component_hash: bb87c5ba6ba43b365c4d7920e2c84cbe28ffa9411f11a2bea408d7554229b330
+    dependencies:
+    - name: chmorgan/esp-libhelix-mp3
+      registry_url: https://components.espressif.com
+      require: private
+      version: 1.0.3
+    - name: espressif/esp-dsp
+      registry_url: https://components.espressif.com
+      require: private
+      rules:
+      - if: target != esp32c2
+      version: ^1.3.4
+    - name: espressif/esp-modbus
+      registry_url: https://components.espressif.com
+      require: private
+      version: ^1.0.15
+    - name: espressif/esp-sr
+      registry_url: https://components.espressif.com
+      require: private
+      rules:
+      - if: target in [esp32s3]
+      version: ^1.4.2
+    - name: espressif/esp-zboss-lib
+      registry_url: https://components.espressif.com
+      require: private
+      rules:
+      - if: target != esp32c2
+      version: ^1.0.1
+    - name: espressif/esp-zigbee-lib
+      registry_url: https://components.espressif.com
+      require: private
+      rules:
+      - if: target != esp32c2
+      version: ^1.0.1
+    - name: espressif/esp_insights
+      registry_url: https://components.espressif.com
+      require: private
+      rules:
+      - if: target != esp32c2
+      version: ^1.2.1
+    - name: espressif/esp_modem
+      registry_url: https://components.espressif.com
+      require: private
+      version: ^1.1.0
+    - name: espressif/esp_rainmaker
+      registry_url: https://components.espressif.com
+      require: private
+      rules:
+      - if: target != esp32c2
+      version: ^1.0.0
+    - name: espressif/libsodium
+      registry_url: https://components.espressif.com
+      require: private
+      version: ^1.0.20~1
+    - name: espressif/mdns
+      registry_url: https://components.espressif.com
+      require: private
+      version: ^1.2.3
+    - name: espressif/network_provisioning
+      registry_url: https://components.espressif.com
+      require: private
+      version: ~1.0.0
+    - name: espressif/qrcode
+      registry_url: https://components.espressif.com
+      require: private
+      rules:
+      - if: target != esp32c2
+      version: ^0.1.0~1
+    - name: espressif/rmaker_common
+      registry_url: https://components.espressif.com
+      require: private
+      rules:
+      - if: target != esp32c2
+      version: ^1.4.6
+    - name: idf
+      require: private
+      version: '>=5.1,<5.2'
+    - name: joltwallet/littlefs
+      registry_url: https://components.espressif.com
+      require: private
+      version: ^1.10.2
+    source:
+      pre_release: true
+      registry_url: https://components.espressif.com/
+      type: service
+    targets:
+    - esp32
+    - esp32s2
+    - esp32s3
+    - esp32c2
+    - esp32c3
+    - esp32c6
+    - esp32h2
+    version: 3.1.0-rc3
+  espressif/cbor:
+    component_hash: 440f4ee4504841cc9b4f3a8ef755776a612ac9dace355514c68b999868f990ff
+    dependencies:
+    - name: idf
+      require: private
+      version: '>=4.3'
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 0.6.0~1
+  espressif/esp-dsp:
+    component_hash: 3e7bbd487f1357a1d4944d0c85966d049501ea281b8a4c7f93f7cfedd5b7f23d
+    dependencies:
+    - name: idf
+      require: private
+      version: '>=4.2'
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 1.4.12
+  espressif/esp-modbus:
+    component_hash: e42ebfdfc9d8e46821a915b4c1a5c6465c44dbd4e1bca10531e26f4adc7acc42
+    dependencies:
+    - name: idf
+      require: private
+      version: '>=4.3'
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 1.0.17
+  espressif/esp-serial-flasher:
+    component_hash: dcc42a16712a1a636509cf0bf90e14032d7f2141784b533613b267b6aa318d52
+    dependencies: []
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 0.0.11
+  espressif/esp-sr:
+    component_hash: 9b41fd5ae5960c393bfd3559cd6e5fa2a95c0bf833915cebafe57fb8c4e4c396
+    dependencies:
+    - name: espressif/esp-dsp
+      registry_url: https://components.espressif.com
+      require: private
+      version: <=1.5.0
+    - name: idf
+      require: private
+      version: '>=5.0'
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 1.9.5
+  espressif/esp-zboss-lib:
+    component_hash: 4c69fa0e9f8a0cd9072b1de305c0e9c51fe5a24bb25c07b7c4c25282925ae2fb
+    dependencies:
+    - name: idf
+      require: private
+      version: '>=5.0'
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 1.6.2
+  espressif/esp-zigbee-lib:
+    component_hash: 58a2c6d968b77df81137dc4f75b6223f3c8e944abc49a851cd7716174942ed75
+    dependencies:
+    - name: idf
+      require: private
+      version: '>=5.0'
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 1.6.2
+  espressif/esp_diag_data_store:
+    component_hash: c1e5cf62f545d2b136db299f4df1b228b9840be5bc3410c9ad2d2a882b5c0d64
+    dependencies:
+    - name: idf
+      require: private
+      version: '>=4.1'
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 1.0.2
+  espressif/esp_diagnostics:
+    component_hash: 5ea8e8da8217ed9ed778db3973139e726e17cd27ef5cf6429c787d19226c79f3
+    dependencies:
+    - name: idf
+      require: private
+      version: '>=4.1'
+    - name: espressif/rmaker_common
+      registry_url: https://components.espressif.com
+      require: private
+      version: ~1.4.0
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 1.2.1
+  espressif/esp_insights:
+    component_hash: ca75edf5441b8cd5a78deabf4c265738d01f21a6f2c39602d2868bfa18c0e187
+    dependencies:
+    - name: espressif/cbor
+      registry_url: https://components.espressif.com
+      require: private
+      rules:
+      - if: idf_version >=5.0
+      version: ~0.6
+    - name: espressif/esp_diag_data_store
+      registry_url: https://components.espressif.com
+      require: private
+      version: 1.0.2
+    - name: espressif/esp_diagnostics
+      registry_url: https://components.espressif.com
+      require: private
+      version: 1.2.1
+    - name: espressif/rmaker_common
+      registry_url: https://components.espressif.com
+      require: private
+      version: ~1.4.0
+    - name: idf
+      require: private
+      version: '>=4.1'
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 1.2.3
+  espressif/esp_modem:
+    component_hash: 681d7c8417ce0f2a11a562c6998b7b379a4847be41d84673c11c0c7a6b00e918
+    dependencies:
+    - name: idf
+      require: private
+      version: '>=4.1'
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 1.3.0
+  espressif/esp_rainmaker:
+    component_hash: 872983f70aa7fb56a39231ced0080a8476aaa277f2368e47ad8fe19ec182e9ba
+    dependencies:
+    - name: espressif/rmaker_common
+      registry_url: https://components.espressif.com
+      require: private
+      version: ~1.4.6
+    - name: espressif/network_provisioning
+      registry_url: https://components.espressif.com
+      require: private
+      rules:
+      - if: idf_version >= 5.1
+      version: ~1.0.0
+    - name: espressif/mdns
+      registry_url: https://components.espressif.com
+      require: private
+      rules:
+      - if: idf_version >=5.0
+      version: ^1.2.0
+    - name: espressif/json_parser
+      registry_url: https://components.espressif.com
+      require: private
+      version: ~1.0.3
+    - name: espressif/json_generator
+      registry_url: https://components.espressif.com
+      require: private
+      version: ~1.1.1
+    - name: espressif/esp_secure_cert_mgr
+      registry_url: https://components.espressif.com
+      require: private
+      rules:
+      - if: idf_version >=4.3
+      version: ^2.2.1
+    - name: espressif/esp_schedule
+      registry_url: https://components.espressif.com
+      require: private
+      version: ~1.2.0
+    - name: espressif/esp_rcp_update
+      registry_url: https://components.espressif.com
+      require: private
+      rules:
+      - if: idf_version >= 5.1
+      version: ~1.2.0
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 1.5.1
+  espressif/esp_rcp_update:
+    component_hash: c10afbd54a17f27eed880e61262b161656e6d36ad63376c307f9273e99d0abcd
+    dependencies:
+    - name: idf
+      require: private
+      version: '>=5.0'
+    - name: espressif/esp-serial-flasher
+      registry_url: https://components.espressif.com
+      require: private
+      version: ~0.0.0
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 1.2.0
+  espressif/esp_schedule:
+    component_hash: e202a9c688f7f1ab601efb91d682e4bcfaebc508dcceee1a1e0a0d2d1ca75a26
+    dependencies:
+    - name: espressif/rmaker_common
+      registry_url: https://components.espressif.com
+      require: private
+      version: ~1.4.2
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 1.2.0
+  espressif/esp_secure_cert_mgr:
+    component_hash: 5d9175b416f751ba6a7cb35bdf092f0af85658ce06c4a592c7c541d8017ebeb9
+    dependencies:
+    - name: idf
+      require: private
+      version: '>=4.3'
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 2.5.0
+  espressif/jsmn:
+    component_hash: d80350c41bbaa827c98a25b6072df00884e72f54885996fab4a4f0aebce6b6c3
+    dependencies:
+    - name: idf
+      require: private
+      version: '>=4.3'
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 1.1.0
+  espressif/json_generator:
+    component_hash: 45033e1c199b13f1c8c1b544fb7d4e2df6a8e3071ebdcb1b22582b61a7974ff2
+    dependencies: []
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 1.1.2
+  espressif/json_parser:
+    component_hash: d74b81729ad06ec11ff5eb5b1b0d7df1d00e6027fc11471f4b139c70dcf1b1e4
+    dependencies:
+    - name: espressif/jsmn
+      registry_url: https://components.espressif.com
+      require: private
+      rules:
+      - if: idf_version >=5.0
+      version: ~1.1
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 1.0.3
+  espressif/libsodium:
+    component_hash: 25b968723c584a2742ca36cebe5a7ef049c6767e059f7b1e1eec69946019025d
+    dependencies:
+    - name: idf
+      require: private
+      version: '>=4.2'
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 1.0.20~2
+  espressif/mdns:
+    component_hash: d439c8c9f4a029f521fc772f5a1376af7972ffbad7ff353eff58d98258696633
+    dependencies:
+    - name: idf
+      require: private
+      version: '>=5.0'
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 1.5.1
+  espressif/network_provisioning:
+    component_hash: 1c0f76f4a37c3f2101ae9735e9da901ef4469a07af9cc075fc8f08fee43281e4
+    dependencies:
+    - name: idf
+      require: private
+      version: '>=5.1'
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 1.0.3
+  espressif/qrcode:
+    component_hash: 3b493771bc5d6ad30cbf87c25bf784aada8a08c941504355b55d6b75518ed7bc
+    dependencies: []
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 0.1.0~2
+  espressif/rmaker_common:
+    component_hash: a3a1df881278d0351fc850b77792fe8a196ddd6dcacbea203d606329cc6a0239
+    dependencies: []
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 1.4.6
+  espressif/usb_host_cdc_acm:
+    component_hash: f76e1283e7ef0e7970e8a708c4ee443ff0aa112572e25319d30b7ec555cc0aee
+    dependencies:
+    - name: idf
+      require: private
+      version: '>=4.4'
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 2.0.6
+  espressif/usb_host_ch34x_vcp:
+    component_hash: c7305154c452531950d8e4ee9838c474b5e4b84fdd12c40b2cae3f6f938752cb
+    dependencies:
+    - name: idf
+      require: private
+      version: '>=4.4'
+    - name: espressif/usb_host_cdc_acm
+      registry_url: https://components.espressif.com
+      require: public
+      version: '>=1.0.4,<3.0.0'
+    source:
+      registry_url: https://components.espressif.com/
+      type: service
+    version: 2.0.0
+  espressif/usb_host_cp210x_vcp:
+    component_hash: 6a36fd6179b2264a7d8854aa643d872f0d6408dd8f67a23d96e8cb8e49dfd087
+    dependencies:
+    - name: idf
+      require: private
+      version: '>=4.4'
+    - name: espressif/usb_host_cdc_acm
+      registry_url: https://components.espressif.com
+      require: public
+      version: '>=1.0.4,<3.0.0'
+    source:
+      registry_url: https://components.espressif.com/
+      type: service
+    version: 2.0.0
+  espressif/usb_host_ftdi_vcp:
+    component_hash: a24180724b8d7fdf01b920b6baebd01057d52d1a4ae5bf7ce009963cc24ebb42
+    dependencies:
+    - name: idf
+      require: private
+      version: '>=4.4'
+    - name: espressif/usb_host_cdc_acm
+      registry_url: https://components.espressif.com
+      require: public
+      version: ^2.0.0
+    source:
+      registry_url: https://components.espressif.com/
+      type: service
+    version: 2.0.0
+  espressif/usb_host_vcp:
+    component_hash: 99b3ad314fa966cb32970e468625672994e259c69c7c668d9c0a13d65993a0e7
+    dependencies:
+    - name: idf
+      require: private
+      version: '>=4.4'
+    - name: espressif/usb_host_cdc_acm
+      registry_url: https://components.espressif.com
+      require: public
+      version: '>=1.0.4,<3.0.0'
+    source:
+      registry_url: https://components.espressif.com/
+      type: service
+    version: 1.0.0~5
+  idf:
+    source:
+      type: idf
+    version: 5.1.4
+  joltwallet/littlefs:
+    component_hash: cc23c607cbc8671bc03b1b1b39ae13d8f5e8e23771e0b1c66599d04ecd0a3527
+    dependencies:
+    - name: idf
+      require: private
+      version: '>=4.3'
+    source:
+      registry_url: https://components.espressif.com
+      type: service
+    version: 1.16.2
+direct_dependencies:
+- espressif/arduino-esp32
+- espressif/usb_host_ch34x_vcp
+- espressif/usb_host_cp210x_vcp
+- espressif/usb_host_ftdi_vcp
+- espressif/usb_host_vcp
+- idf
+manifest_hash: 935059c794ba5107c1aba0ab3bbb1e4b6049392ff82857bae4c2d5b15013966f
+target: esp32s3
+version: 2.0.0

main/CMakeLists.txt

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

main/idf_component.yml

@@ -0,0 +1,10 @@
+dependencies:
+  usb_host_ch34x_vcp: "^2"
+  usb_host_cp210x_vcp: "^2"
+  usb_host_ftdi_vcp: "^2"
+  usb_host_vcp: "^1"
+  idf: ">=5.1.0"
+
+  espressif/arduino-esp32:
+    pre_release: true
+    version: '*'

main/main.cpp

@@ -0,0 +1,171 @@
+#include "Arduino.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include "esp_log.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "freertos/semphr.h"
+
+#include "usb/cdc_acm_host.h"
+#include "usb/vcp_ch34x.hpp"
+#include "usb/vcp_cp210x.hpp"
+#include "usb/vcp_ftdi.hpp"
+#include "usb/vcp.hpp"
+#include "usb/usb_host.h"
+
+using namespace esp_usb;
+
+// Change these values to match your needs
+#define EXAMPLE_BAUDRATE     (115200)
+#define EXAMPLE_STOP_BITS    (0)      // 0: 1 stopbit, 1: 1.5 stopbits, 2: 2 stopbits
+#define EXAMPLE_PARITY       (0)      // 0: None, 1: Odd, 2: Even, 3: Mark, 4: Space
+#define EXAMPLE_DATA_BITS    (8)
+
+
+namespace {
+static const char *TAG = "VCP example";
+static SemaphoreHandle_t device_disconnected_sem;
+
+/**
+ * @brief Data received callback
+ *
+ * Just pass received data to stdout
+ *
+ * @param[in] data     Pointer to received data
+ * @param[in] data_len Length of received data in bytes
+ * @param[in] arg      Argument we passed to the device open function
+ * @return
+ *   true:  We have processed the received data
+ *   false: We expect more data
+ */
+static bool handle_rx(const uint8_t *data, size_t data_len, void *arg)
+{
+    printf("%.*s", data_len, data);
+    return true;
+}
+
+/**
+ * @brief Device event callback
+ *
+ * Apart from handling device disconnection it doesn't do anything useful
+ *
+ * @param[in] event    Device event type and data
+ * @param[in] user_ctx Argument we passed to the device open function
+ */
+static void handle_event(const cdc_acm_host_dev_event_data_t *event, void *user_ctx)
+{
+    switch (event->type) {
+        case CDC_ACM_HOST_ERROR:
+            ESP_LOGE(TAG, "CDC-ACM error has occurred, err_no = %d", event->data.error);
+            break;
+        case CDC_ACM_HOST_DEVICE_DISCONNECTED:
+            ESP_LOGI(TAG, "Device suddenly disconnected");
+            xSemaphoreGive(device_disconnected_sem);
+            break;
+        case CDC_ACM_HOST_SERIAL_STATE:
+            ESP_LOGI(TAG, "Serial state notif 0x%04X", event->data.serial_state.val);
+            break;
+        case CDC_ACM_HOST_NETWORK_CONNECTION:
+        default: break;
+    }
+}
+
+/**
+ * @brief USB Host library handling task
+ *
+ * @param arg Unused
+ */
+static void usb_lib_task(void *arg)
+{
+    while (1) {
+        // Start handling system events
+        uint32_t event_flags;
+        usb_host_lib_handle_events(portMAX_DELAY, &event_flags);
+        if (event_flags & USB_HOST_LIB_EVENT_FLAGS_NO_CLIENTS) {
+            ESP_ERROR_CHECK(usb_host_device_free_all());
+        }
+        if (event_flags & USB_HOST_LIB_EVENT_FLAGS_ALL_FREE) {
+            ESP_LOGI(TAG, "USB: All devices freed");
+            // Continue handling USB events to allow device reconnection
+        }
+    }
+}
+}
+
+
+
+
+void setup() {
+    device_disconnected_sem = xSemaphoreCreateBinary();
+    assert(device_disconnected_sem);
+
+    // Install USB Host driver. Should only be called once in entire application
+    ESP_LOGI(TAG, "Installing USB Host");
+    const usb_host_config_t host_config = {
+        .skip_phy_setup = false,
+        .intr_flags = ESP_INTR_FLAG_LEVEL1,
+    };
+    ESP_ERROR_CHECK(usb_host_install(&host_config));
+
+    // Create a task that will handle USB library events
+    BaseType_t task_created = xTaskCreate(usb_lib_task, "usb_lib", 4096, NULL, 10, NULL);
+    assert(task_created == pdTRUE);
+
+    ESP_LOGI(TAG, "Installing CDC-ACM driver");
+    ESP_ERROR_CHECK(cdc_acm_host_install(NULL));
+
+    // Register VCP drivers to VCP service
+    VCP::register_driver<FT23x>();
+    VCP::register_driver<CP210x>();
+    VCP::register_driver<CH34x>();
+}
+
+void loop() {
+        const cdc_acm_host_device_config_t dev_config = {
+            .connection_timeout_ms = 5000, // 5 seconds, enough time to plug the device in or experiment with timeout
+            .out_buffer_size = 512,
+            .in_buffer_size = 512,
+            .event_cb = handle_event,
+            .data_cb = handle_rx,
+            .user_arg = NULL,
+        };
+
+        // You don't need to know the device's VID and PID. Just plug in any device and the VCP service will load correct (already registered) driver for the device
+        ESP_LOGI(TAG, "Opening any VCP device...");
+        auto vcp = std::unique_ptr<CdcAcmDevice>(VCP::open(&dev_config));
+
+        if (vcp == nullptr) {
+            ESP_LOGI(TAG, "Failed to open VCP device");
+            // continue;
+        }
+        vTaskDelay(10);
+
+        ESP_LOGI(TAG, "Setting up line coding");
+        cdc_acm_line_coding_t line_coding = {
+            .dwDTERate = EXAMPLE_BAUDRATE,
+            .bCharFormat = EXAMPLE_STOP_BITS,
+            .bParityType = EXAMPLE_PARITY,
+            .bDataBits = EXAMPLE_DATA_BITS,
+        };
+        ESP_ERROR_CHECK(vcp->line_coding_set(&line_coding));
+
+        /*
+        Now the USB-to-UART converter is configured and receiving data.
+        You can use standard CDC-ACM API to interact with it. E.g.
+
+        ESP_ERROR_CHECK(vcp->set_control_line_state(false, true));
+        ESP_ERROR_CHECK(vcp->tx_blocking((uint8_t *)"Test string", 12));
+        */
+
+        // Send some dummy data
+        ESP_LOGI(TAG, "Sending data through CdcAcmDevice");
+        uint8_t data[] = "test_string";
+        ESP_ERROR_CHECK(vcp->tx_blocking(data, sizeof(data)));
+        ESP_ERROR_CHECK(vcp->set_control_line_state(true, true));
+
+        // We are done. Wait for device disconnection and start over
+        ESP_LOGI(TAG, "Done. You can reconnect the VCP device to run again.");
+        xSemaphoreTake(device_disconnected_sem, portMAX_DELAY);
+}

sdkconfig.defaults

@@ -0,0 +1,12 @@
+#
+# Arduino ESP32
+#
+CONFIG_AUTOSTART_ARDUINO=y
+# end of Arduino ESP32
+
+#
+# FREERTOS
+#
+CONFIG_FREERTOS_HZ=1000
+# end of FREERTOS
+# end of Component config