ESP32시리즈에 대해 알아보자(작성중)

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https://www.espressif.com/en/products/socs/esp32-c3

ESP32는 무선+mcu 제품이다.
wi-fi, 블루투스등이 주용도이다.
가격이 매우 저렴하다.
경쟁상대가 없다.
몇년후에는 대부분 이 ic들을 사용할거다.

ESP32C3 Series

UltraLowPower SoC with RISCV SingleCore CPU Supporting IEEE 802.11b/g/n (2.4 GHz WiFi) and Bluetooth® 5 (LE)
저전력, 대부분의 기능이 ic 하나에 들어 있는 Soc, 2.4GHz wi-fi, 블루투스 칩
ESP32-C3
ESP32-C3FN4
ESP32-C3FH4
ESP32-C3FH4AZ

아래 블럭도와 같이 생겼다.

최신 블루투스 LE 5를 지원한다.
32비트 CPU는 최고 160 MHz까지 동작한다.

1 core at 160 MHz: 407.22 CoreMark; 2.55 CoreMark/MHz
거의 Cortex4급이다.(RISV-V코어)

400 KB SRAM (16 KB for cache)
mcu치고는 많은 RAM이 들어 있다.

개발자들이 원하는 거의 모든 기능이 다 들어 있다.

그래서, 위와 같이 많은 제품들을 만들 수 있다.

Flash메모리가 없는것도 있고, 4MB도 3종류나 된다.
보통 mcu들이 1MB정도의 flash메모리를 가지고 있는것에 비해, 약4배나 큰 크기이다.
그런데도 가격이 말도안되게 저렴하다.
중국은 역시, 땅파서 제품 만든다.

온도 105도는 자동차용으로 만들어진것이다.

단점이라고 한다면, 핀이 적다는것이다. (장점일 수 도 있다)
GPIO로 사용할 수 있는 핀이 몇개 안되는것이다.

ESP32-C3FH4AZ 는 SPI핀이 없다.(왜 없을까?)

I2S 기능도 있다.

`

ADC는 최대 6개


wi-fi 사용시, 전력소모가 좀 크다.

HT20 – 20 MHz-wide channels
HT40 – 40 MHz-wide channels
HT80 – 80 MHz-wide channels

통신속도가 느릴 수록 낮은 전파로 통신이 가능해진다.
멀리 통신이 가능하려면, 속도를 낮춰야한다.



Developer Zone
• ESP-IDF Programming Guide for ESP32-C3 – Extensive documentation for the ESP-IDF development framework.
• ESP-IDF and other development frameworks on GitHub. http://github.com/espressif
• ESP32 BBS Forum – Engineer-to-Engineer (E2E) Community for Espressif products where you can post questions, share knowledge, explore ideas, and help solve problems with fellow engineers. http://esp32.com/
• The ESP Journal – Best Practices, Articles, and Notes from Espressif folks. http://blog.espressif.com/
• See the tabs SDKs and Demos, Apps, Tools, AT Firmware. http://espressif.com/en/support/download/sdks-demos

SDKs & Demos | Espressif Systems

필요한것들

• ESP32-C3 보드,
• USB 케이블
• Computer/PC/NOTE BOOK (Windows, Linux, or macOS).

 

 

• ESP32-C3-DevKitM-1
• ESP32-C3-DevKitC-02

ESP32-C3-DevKitM-1

• Getting Started: Overview of ESP32-C3-DevKitM-1 and hardware/software setup instructions to get started.
• Hardware Reference: More detailed information about the ESP32-C3-DevKitM-1’s hardware.
• Hardware Revision Details: Revision history, known issues, and links to user guides for previous versions (if any) of ESP32-C3-DevKitM-1.
• Related Documents: Links to related documentation.

 

 

 

Software

To start using ESP-IDF on ESP32-C3 you’ll need the following software installed:

• Toolchain to compile code for ESP32-C3
• Build tools - CMake and Ninja to build a full Application for ESP32-C3
• ESP-IDF that essentially contains API (software libraries and source code) for ESP32-C3 and scripts to operate the Toolchain

 

IDE  (최근에 만들었나 보다....설치후 빌드가 안된다)

• Eclipse Plugin
• VSCode Extension

프로젝트 폴더 열어도 내부 폴더, 파일들이 안보이는 경우가 있다. 다시 실행하면 보임.

프로젝트폴더 열고, 빌드하면, "Build not configured correctly"라고만 한다....

=>(어쩌라고....)

 

 

The active part does not provide properties. 

=>뭔말이여?

 

 

파일 탐색기를 통해 C:\esp32\msys32\etc\profile.d 디렉토리로 이동합니다.

(그런 디렉토리가 없다)
export_idf_path.sh 파일을 생성합니다.
export_idf_path.sh 파일 내용은 다음과 같이 구성합니다.
export IDF_PATH="C:/msys32/home/user-name/esp/esp-idf"
(뭐 맞는게 없냐?)

 

 

Manual Installation

For the manual procedure, please select according to your operating system.

• Windows Installer
• Linux and macOS

ESP-IDF Tools Installer

Windows Installer Download

ESP-IDF Windows Installer Download

Open Source IoT Development Framework for ESP32

아래와 같은 화면에서 녹색버튼을 눌러 설치를 한다.

(중국 소프트웨어 믿고 설치해도 될까? 걱정...)

 

아래와 같이 설치가 진행되고....

다 설치하면 약 5.3GB  (2022.04)

시간 약 30분

 

프로젝트 Open, Close가 좀 이상하다. 버그도 있는것 같고.

esp-idf-4.4.1.zip 다운받아서 examples 폴더가 샘플폴더는 맞는거 같은데, 빌드도 안되고,

템플릿처럼 사용한다....(이거 뭐여....)

템플릿이면, 기본 포함되야 하는거 아닌가?

어쨌든, 새 프로젝트 만들때 골라서 하니, 1개 빼고는 빌드가 되는것 같긴하다.

그 1개가 내가 할려고하는건데, 그것만 안된다....

 

..다른곳에서...계속...

 

 

 

 

 

Build Your First Project

종류가 많다....

If you already have the ESP-IDF installed and not using IDE, you can build your first project from the command line following Step 5. First Steps on ESP-IDF.

ESP32-C3-DevKitM-1 - ESP32-C3 - — ESP-IDF Programming Guide latest documentation

ESP32-C3-DevKitC-02 - ESP32-C3 - — ESP-IDF Programming Guide latest documentation

ESP32-C3-DevKitC-02 - ESP32-C3 - — ESP-IDF Programming Guide latest documentation

ESP32-C3-DevKitM-1 - ESP32-C3 - — ESP-IDF Programming Guide latest documentation

ESP32-C3-DevKitM-1 - ESP32-C3 - — ESP-IDF Programming Guide latest documentation

ESP32-C3-DevKitM-1 - ESP32-C3 - — ESP-IDF Programming Guide latest documentation

 

Provide feedback about this document

• ESP32-C3 embedded, 32-bit RISC-V single-core processor, up to 160 MHz
• 384 KB ROM
• 400 KB SRAM
• 8 KB RTC SRAM
• 40 MHz crystal oscillator
• 4 MB SPI flash
• Operating Voltage/Power Supply: 3.0~3.6V
• Operating Temperature Range: –40~85°C

종류가 많아서....

ESP32-C3-DevKitM-1

espressif/esp32c3-bt-lib

GitHub - espressif/esp32c3-bt-lib: ESP32-C3/S3 Bluetooth stack (below HCI layer) precompiled libraries

void bt_hid_demo_task(void *pvParameters)
{
static const char* help_string = "########################################################################\n"\
"BT hid mouse demo usage:\n"\
"You can input these value to simulate mouse: 'q', 'w', 'e', 'a', 's', 'd', 'h'\n"\
"q -- click the left key\n"\
"w -- move up\n"\
"e -- click the right key\n"\
"a -- move left\n"\
"s -- move down\n"\
"d -- move right\n"\
"h -- show the help\n"\
"########################################################################\n";
printf("%s\n", help_string);
char c;
while (1) {
c = fgetc(stdin);
switch (c) {
case 'q':
send_mouse(1, 0, 0, 0);
break;
case 'w':
send_mouse(0, 0, -10, 0);
break;
case 'e':
send_mouse(2, 0, 0, 0);
break;
case 'a':
send_mouse(0, -10, 0, 0);
break;
case 's':
send_mouse(0, 0, 10, 0);
break;
case 'd':
send_mouse(0, 10, 0, 0);
break;
case 'h':
printf("%s\n", help_string);
break;
default:
break;
}
vTaskDelay(10 / portTICK_PERIOD_MS);
}
}

Espressif Audio Development Framework

The ESP-ADF is a comprehensive framework for audio applications including:

• CODEC’s HAL
• Music Players and Recorders
• Audio Processing
• Bluetooth Speakers
• Internet Radios
• Hands-free devices
• Speech Recognition

This framework is available at GitHub: ESP-ADF.

Espressif DSP Library

The library provides algorithms optimized specifically for digital signal processing applications. This library supports:

• Matrix multiplication
• Dot product
• FFT (Fast Fourier Transform)
• IIR (Infinite Impulse Response)
• FIR (Finite Impulse Response)
• Vector math operations

This library is available here: ESP-DSP library.

ESP-WIFI-MESH Development Framework

This framework is based on the ESP-WIFI-MESH protocol with the following features:

• Fast network configuration
• Stable upgrade
• Efficient debugging
• LAN control
• Various application demos

ESP-MDF.

ESP-WHO

The ESP-WHO is a face detection and recognition framework using the ESP32 and camera. To know more about the project, see ESP-WHO on GitHub.

ESP RainMaker

ESP RainMaker is a complete solution for accelerated AIoT development. Using ESP RainMaker, you can create AIoT devices from the firmware to the integration with voice-assistant, phone apps and cloud backend.

ESP RainMaker on GitHub.

ESP-IoT-Solution

ESP-IoT-Solution contains commonly used device drivers and code frameworks when developing IoT systems. The device drivers and code frameworks within the ESP-IoT-Solution are organized as separate components, allowing them to be easily integrated into an ESP-IDF project.

ESP-IoT-Solution includes:

• Device drivers for sensors, display, audio, GUI, input, actuators, etc.
• Framework and documentation for low power, security, storage, etc.
• Guide for Espressif open source solutions from practical application point.

ESP-IoT-Solution on GitHub.

ESP-Protocols

ESP-Protocols repository contains collection of protocol components for ESP-IDF. The code within the ESP-Protocols is organized into separate components, allowing them to be easily integrated into an ESP-IDF project. In addition to that, each component is available in IDF Component Registry.

ESP-Protocols components:

• esp_modem enables connectivity with GSM/LTE modems using AT commands or PPP protocol, see the esp_modem documentation.
• esp_websocket_client is a managed component for esp-idf that contains implementation of [WebSocket protocol client](https://datatracker.ietf.org/doc/html/rfc6455) for ESP32, see the esp_websocket_client documentation.

Application Examples

ESP-IDF contains these ESP-WIFI-MESH example projects:
The Internal Communication Example demonstrates how to set up a ESP-WIFI-MESH network and have the root node send a data packet to every node within the network.
The Manual Networking Example demonstrates how to use ESP-WIFI-MESH without the self-organizing features. This example shows how to program a node to manually scan for a list of potential parent nodes and select a parent node based on custom criteria.