Bluetooth Low Energy SDK Development

Last Updated on : 2023-05-24 10:22:43download

Tutorial contents

The following table describes the pin definition for the BTU module.

No.	Symbol	I/O type	Feature	Usage	Notes
1	D3	I/O	I/O	-	-
2	D7	I/O	I/O	Pin demo – LED output	LED indicator on the microcontroller board
3	C0	I/O	I/O	Application/I2C demo – SDA	SDA on the function board
4	SWS	I/O	SWS	SWS	-
5	B6	I	ADC	ADC demo – ADC	ADC on the power supply board
6	A0	I/O	I/O	Pin demo – Key-press input	Keys on the microcontroller board
7	A1	I/O	I/O	Application demo – SHT3x alert	INT on the function board
8	C2	I/O	PWM	-	-
9	C3	I/O	PWM	Print logs	Log print is disabled by default.
10	D2	I/O	PWM	-	Default to SDA.
11	B4	I/O	PWM	-	Default to SCL.
12	B5	I/O	PWM	PWM demo – PWM output	PWM5
13	GND	P	GND	GND	-
14	VCC	P	VCC	VCC	-
15	B1	I/O	TXD	UART demo – TX	The default setting, used for firmware flashing
16	B7	I/O	RXD	UART demo – RX	The default setting, used for firmware flashing
17	C4	I/O	ADC	-	-
18	RST	I/O	RST	RST	Reset button on the microcontroller board
19	C1	I/O	I/O	Application/I2C demo – SCL	SCL on the function board
20	D4	I/O	I/O	-	-
21	NC	I/O	Floating	-	-