ESP-WROOM-32

Pin Layout

ESP32-S3-DevkitC-2 Pin Layout

ESP32-DevkitC V4 Pin Layout

ESP32-DevkitC V1 Pin Layout

Comparision

order	module	chip	Flash	PSRAM	SPI Voltage	GPIO
ESP32-S3-DevKitC-1-N32R8V	ESP32-S3-WROOM-2-N32R8V	ESP32-S3	32 MB OT	8 MB OT	1.8 V	33
ESP32-DevKitC-V4	ESP32-WROOM-32D	ESP32-D0WD-V3
ESP32-DevKitC	ESP32-WROOM-32U-N4	ESP32-D0WDQ6-V1	4 MB	0MB		26
ESP32-DevKit-V1	ESP32-WROOM-32	ESP32-D0WD-V1	4 MB	0MB		26

CP2104

• CP210x USB to UART Bridge VCP Drivers
• AN220: USB Driver Customization
• CP210x Legacy Programming Utilities
• http://www.zztongyun.com/article/linux%E67E5%E770B%E7EC4%E6210%E5458
• Disable windows Driver signature

Function block diagram

Peripheral Table

Type	Functions
ADC	Dedicated GPIOs
DAC	Dedicated GPIOs
Touch Sensor	Dedicated GPIOs
JTAG	Dedicated GPIOs
SD/SDIO/MMC HostController	Dedicated GPIOs
Motor PWM	Any GPIO
SDIO/SPI SlaveController	Dedicated GPIOs
UART	Any GPIO1
I2C	Any GPIO
I2S	Any GPIO
LED PWM	Any GPIO
RMT	Any GPIO
GPIO	Any GPIO
Parallel QSPI	Dedicated GPIOs
EMAC	Dedicated GPIOs
Pulse Counter	Any GPIO
TWAI	Any GPIO
USB	Dedicated GPIOs

int sda = 16;
int scl = 17;

void setup()
{
    Wire.setPins(int sda, int scl); // sda & scl GPIO can change if this line present
    // default sda 21, scl 22
    Wire.begin(); // join i2c bus (address optional for master)
}

Partition Table

Library Builder

Arduino Experiments

• env setup log
• WIFI_SCAN
• WIFI_CONNECT
• WIFI_MQTT

ESP-IDF Experiments

git clone git@github.com:espressif/esp-idf.git
cp -r $IDF_PATH/examples/get-started/hello_world .
idf.py –-list-targets
idf.py set-target esp32
idf.py menuconfig
idf.py build
idf.py -p PORT flash monitor
# press ctrl + ] to exit monitor

• flash & monitor log

1. except for the download/programming mode decided by the bootloader. ↩