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Bluetooth Low Energy SDK Development

Last Updated on : 2023-01-29 07:32:16download

Tutorial contents

  • Quick Start
  • Product Creation
  • Development Environment Setup
  • Flashing and Authorization
  • Application Development
  • Firmware Update
  • SDK API Reference
  • Board API Reference

Pin definition

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 - -