From ITEAD Wiki

Overview

The PSH-C32 is a universal low-cost WiFi module designed by ITEAD, which adopts the highly integrated Wi-Fi chip ESP32 as MCU. Created by Espressif, the ESP32 is a new, low-cost SoC with Wi-Fi & dual-mode Bluetooth capabilities. ESP32 features at Xtensa dual-Core 32-bit Tensilica L108 MCU, operating at 160 or 240 MHz ( highest 250MHz), low-power consumption, multiple sleep modes and more. Compared to the previous generation ESP8266, ESP32 has more memory space and more I/O port for development. It is very ideal for wearable tech design.

Go shopping PSH-C32 WiFi Wireless Module(SKU: IM160913001)

Features

Support wireless 802.11 b/g/n/e/i

IEEE 802.11 standard security features all supported,including WFA/WPA/WPA2/WAPI

Support WPA/WPA2 /WP2-Enterprise /WPS encryption

Built-in TCP/IP protocol stack, support multi-way TCP Client connection

Support Wi-Fi Direct (P2P)，P2P discovery，P2P GO mode and P2P power management

Bluetooth v4.2 complete standard, including BR/EDR and BLE

Support standard Class-1, Class-2, Class-3 without need for external power amplifier

Support rich Socket AT command

Support SDK fast programming

Support UART/GPIO data communication interface

Built-in 32-bit MCU, can also serve as the application processor

Supply voltage: 2.2V~3.6V, default single 3.3V power supply

Electrical Characteristics

PARAMETER Min Type Max Unit Storage Temp. -40 Room Temperature 125 ℃ Working Voltage 2.8 3.3 3.6 V I/O Vil/Vih -0.3/0.75VIO 0.25VIO/3.3 V I/O Vpl/Voh N/0.8VIO 0.1VIO/N V I/O Imax 12 mA

Hardware

PIN

PIN MAP

PIN Name 1 CHIP_PU 2 SENSOR_VP 3 SENSOR_CAPP 4 SENSOR_CAPN 5 SENSOR_VN 6 VDET_1 7 VDET_2 8 32K_XP 9 32K_XN 10 GPIO25 11 GPIO26 12 GPIO27 13 GND 14 GND 15 MTMS 16 MTDI 17 MTCK 18 MTDO 19 GPIO2 20 GPIO0 21 GPIO4 22 GPIO16 23 GPIO17 24 NC 25 NC 26 NC 27 NC 28 NC 29 NC 30 GPIO5 31 GPIO18 32 GPIO23 33 GPIO19 34 GPIO22 35 U0RXD 36 U0TXD 37 GPIO21 38 VCC 39 VCC 40 GND 41 GND 42 GND

Strapping Pins

There are totally 6 Strapping pins in ESP32:

MTDI/GPIO12: internal pull-down

GPIO0: internal pull-up

GPIO2: internal pull-down

GPIO4: internal pull-down

MTDO/GPIO15: internal pull-up

GPIO5: internal pull-up

Pin Mode

Mode GPIO0 GPIO2 UART Download Low Low Flash Boot High /

Confirm Function: After power up, level of 18 IO ports will auto-flip, the frequency is 1s:

GPIO0,GPIO2, GPIO4,GPIO5, GPIO12,GPIO13, GPIO14,GPIO15, GPIO16,GPIO17, GPIO18,GPIO19, GPIO21,GPIO22, GPIO23,GPIO25, GPIO26,GPIO27

Connect the serial port, open the serial assistant, when the baudrate is 115200, it will display current number of SSID that can be searched and the first SSID name can be searched.

Useful Link

https://esp32.com

Download

PSH-C32 Schematic

ESP32 Datasheet