User's Manual

BL-01S WIFI+BLE module

Page 8 of 13

2. Pin definition

BL-01S module has 8 pins in total, as shown in Figure 2.1. Peripherals

include 5 GPIOs, 2 UARTs, 1 I2C master/slave, 4 PWM channels, and 1

12-bit general-purpose ADC. Each GPIO can be used as a general-

purpose input and output function. Table 2.2 is the interface

definition.

2.1 Figure 2.1 BL-01S Pin diagram

Table 2.2 Pin description

Number

Pin Name

Function description

GND

ground

GPIO16; I2C_SCL; UART0_TX; PWM_CH1; (Only this

UART0 can be used to burn firmware)