ESP32 WROOM CHIP
ESP32 WROOM CHIP
The ESP32 WROOM CHIP is a system on a chip (SoC) designed for IoT applications, developed by Espressif Systems. It is a powerful, low-power, and highly integrated microcontroller unit (MCU) that combines Wi-Fi, Bluetooth, and Bluetooth Low Energy (BLE) capabilities with a rich set of peripherals.
| The ESP32 WROOM CHIP is designed to provide a comprehensive solution for IoT applications, including |
Wi-Fi, Bluetooth, and BLE protocols for seamless connectivity
Execute software applications and handle peripherals
Interact with various devices and sensors
### Processor and Memory
Dual-core 32-bit LX6 microprocessor, operating at up to 240 MHz
520 KB of SRAM, 448 KB of ROM, and 4 MB of flash memory
Supports external flash memory and SD cards
### Wireless Connectivity
| Wi-Fi | 802.11 b/g/n, supports both infrastructure and ad-hoc modes |
BR/EDR and BLE 5.0, supports dual-mode operation
| + Wi-Fi | up to 150 Mbps |
| + Bluetooth | up to 2 Mbps |
### Peripherals and Interfaces
SPI, I2S, I2C, UART, and SDIO interfaces
18x ADC channels, 2x DAC channels, and 3x SPI interfaces
3x UART interfaces, including one with infrared (IR) capabilities
2x I2C interfaces, 1x I2S interface, and 1x SDIO interface
16x PWM channels, 2x DAC channels, and 2x TWAI interfaces
Supports external interfaces, such as Ethernet, USB, and CAN
### Security Features
Advanced encryption and decryption engines for secure data transmission
Supports secure boot, flash encryption, and TrustZone architecture
Implements WPA2, WPA3, and WAPI security protocols
### Power Management
2.2 V to 3.6 V
| Low-power modes | deep sleep, hibernate, and shutdown |
Supports power-saving features, such as dynamic voltage and frequency scaling
### Operating System and Software
Supports various operating systems, including Espressif's MicroPython, Lua, and C
Compatible with popular IoT development platforms, such as Arduino and ESP-IDF
| The ESP32 WROOM CHIP is suitable for a wide range of IoT applications, including |
Smart home devices and appliances
Wearables and fitness trackers
Industrial automation and control systems
Robotics and autonomous systems
Medical devices and healthcare applications
Smart cities and infrastructure projects
The ESP32 WROOM CHIP is a powerful, versatile, and highly integrated SoC designed for IoT applications. Its rich set of peripherals, wireless connectivity options, and advanced security features make it an ideal choice for developing innovative and connected devices.
ESP32 WROOM CHIP DocumentationOverviewThe ESP32 WROOM chip is a highly integrated Wi-Fi system-on-a-chip (SoC) designed for low-power, low-cost, and compact wireless connectivity solutions. It is a popular choice for IoT applications due to its versatility, performance, and ease of use.FeaturesDual-core 32-bit LX6 microprocessor
Integrated Wi-Fi 802.11 b/g/n
Bluetooth 4.2
On-chip memory: 520 KB SRAM, 448 KB ROM
Supports multiple interfaces: SPI, I2S, I2C, UART, GPIO
Operating voltage: 2.2 V to 3.6 V
Operating temperature: -40C to 85CCode Examples### Example 1: Wi-Fi Connection and HTTP RequestThis example demonstrates how to connect to a Wi-Fi network and send an HTTP request using the ESP32 WROOM chip.```c
#include <WiFi.h>
#include <HTTPClient.h>const char ssid = "your_wifi_ssid";
const char password = "your_wifi_password";
const char url = "http://example.com";WiFiClient client;
HTTPClient http;void setup() {
Serial.begin(115200);// Connect to Wi-Fi
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("Connecting to WiFi...");
}
Serial.println("Connected to WiFi");
Serial.println("Initializing HTTP client...");http.begin(url);
}void loop() {
int httpCode = http.GET();
if (httpCode > 0) {
Serial.println("HTTP response code: " + String(httpCode));
String response = http.getString();
Serial.println(response);
} else {
Serial.println("Error sending HTTP request");
}
http.end();
delay(5000);
}
```### Example 2: Bluetooth Low Energy (BLE) AdvertisingThis example demonstrates how to use the ESP32 WROOM chip as a Bluetooth Low Energy (BLE) peripheral device and advertise a service.```c
#include <BLE.h>BLEServer server;
BLEService service;
BLEAdvertising advertising;void setup() {
Serial.begin(115200);// Initialize BLE
BLE.begin();// Create a BLE service
service = server->createService("180F"); // Generic Access Profile// Create a BLE characteristic
BLECharacteristic characteristic = service->createCharacteristic("2A19", BLECharacteristic::PROPERTY_READ);
characteristic->setValue("ESP32 WROOM");// Start advertising
advertising = server->getAdvertising();
advertising->start();
Serial.println("Advertising started...");
}void loop() {
delay(2000);
}
```### Example 3: GPIO Control and UART CommunicationThis example demonstrates how to use the ESP32 WROOM chip's GPIO pins to control an external device and communicate with it using UART.```c
#include <WiFi.h>
#include <UART.h>const int ledPin = 21; // ESP32 WROOM GPIO 21
const int uartTx = 17; // ESP32 WROOM GPIO 17 (UART TX)
const int uartRx = 16; // ESP32 WROOM GPIO 16 (UART RX)void setup() {
Serial.begin(115200);// Initialize UART
UART.begin(9600, SERIAL_8N1, uartRx, uartTx);// Initialize GPIO
pinMode(ledPin, OUTPUT);
}void loop() {
// Toggle LED
digitalWrite(ledPin, HIGH);
delay(500);
digitalWrite(ledPin, LOW);
delay(500);// Send UART command
UART.print("Hello, UART!");
UART.println();// Receive UART response
if (UART.available() > 0) {
String response = UART.readStringUntil('
');
Serial.println("UART response: " + response);
}
delay(1000);
}
```Note: These examples are just a few demonstrations of the ESP32 WROOM chip's capabilities. You can explore more features and libraries in the Arduino IDE or using the ESP-IDF framework.