infineon DPS368 Pressure Sensor User Guide

DPS368 Pressure
Shield2Go
Quick Start
V1.0.0

Introduction

The DPS368 is a miniaturized digital barometric air pressure sensor with ultra-high precision (±2 cm) and low current consumption, capable of measuring both pressure and temperature. Due to its robust package, it can withstand 50 m under water for one hour (IPx8). The pressure sensor element is based on a capacitive sensing principle which guarantees high precision during temperature changes. The small 2.0 x 2.5 x 1.1 mm package makes the DPS368 ideal for mobile applications and wearable devices. The internal signal processor converts the output from the pressure and temperature sensor elements to 24-bit results.
Each unit is individually calibrated, the calibration coefficients calculated during this process are stored in the calibration registers. The coefficients are used in the application to convert the measurement results to high accuracy pressure and temperature values.
The result FIFO can store up to 32 measurement results, allowing for a reduced host processor polling rate. Sensor measurements and calibration coefficients are available through the serial I²C or SPI interface.

Link to Datasheet and Product Page

Evaluation Board Notes

Information

• Supply voltage is typ. 3.3 V, please refer to DPS368 (infineon.com)for more details about maximum ratings
• Pinout on top (head) is directly connected to the pins of the DPS368
• If the head is broken off, only two capacitors are connected to the DPS368
• Software compatible with Arduino and library fully integrated into the Arduino IDE
• Standard delivery of the board in terms of interface mode is I²C with 0x77 when the 0 Ohm resistors are soldered as shown in the right picture
• Sales Name S2GO PRESSURE DPS368 and OPN S2GOPRESSUREDPS368TOBO1

Link to S2GO PRESSURE DPS368 – Infineon Technologies

Ensure that no voltage applied to any of the pins exceeds the absolute maximum rating of 4 V

Evaluation Board PCB Details

The board can be switched from I2C mode to SPI mode by moving 0 Ohm resistors.
The maximum voltage on any pin is 4 V.
Solder Bridge 31 enables pull-down resistor on interrupt pin and changes I2C address from 0x77 to 0x76.
Solder Bridge 32 connects the interrupt pin to the INT/GPIO3 pin.
www.infineon.com

Evaluation Board Schematic

– I²C with optional interrupt: 0 Ohm R11, R12, R13, R14 are soldered)
– SPI 4 Wire: 0 Ohm resistors R21, R22, R23, R24 are soldered
– J1 Jumper – If soldered, enables the pull-down resistor on the interrupt pin and changes the I²C address from 0x77 to 0x76)
– J2 Jumper – Can be soldered to connect the INT/GPIO3 pin

Arduino: The Arduino IDE

Arduino IDE Arduino is a hardware-software prototyping environment IDE developed by Arduino – Home

• Installation Details for Windows: Click Install the Arduino Software (IDE) on Windows PCs | Arduino
• Installation Details for Linux: Click Install the Arduino Software (IDE) on Linux | Arduino
• Installation Details for Mac OS: ClickArduino: Page Not found | Arduino
• Installation Details for Portable IDE: Click How to create and use a portable version of the Arduino Software (IDE) | Arduino

Arduino Quick Start

• What is Arduino? Click What is Arduino? | Arduino
• Extended information about the Arduino environment. Click Arduino Software (IDE) | Arduino
• How to import libraries? Click Installing Additional Arduino Libraries | Arduino
• How to install additional boards? Click Installing additional cores | Arduino
• Problems related to Arduino? Click Arduino Help Center for troubleshooting

How to download the library for Arduino – 1

Notes

• Open the Arduino IDE
• Navigate to Sketch – Include Library – Manage Libraries
• The Arduino library manager will be opened (see next slide for further instructions)
• Additional notes for installation can be found in the GitHub repository, e.g. if the library manager is not used

https://github.com/Infineon/DPS368-Library- Arduino

How to download the library for Arduino – 2

Notes

• The Arduino library manager is a comprehensive tool to install external libraries for Arduino
• Search for DPS368 in the Filter your search… field
• Select as Type: All and Topic: All when searching for DPS368
• As shown in the picture, please choose the respective library and install it
• Regularly check your installed libraries for updates
• In case of problems, please visit also our GitHub – Infineon/DPS368-Library-Arduino: Library of Infineon’s highly sensitive DPS368 pressure sensor for Arduino.and open an issue to get further help

https://github.com/Infineon/DPS368-Library- Arduino

Example with XMC 2Go

Notes

• The Shield2Go form factor of the Shield2Go evaluation board is directly compatible with the KIT_XMC_2GO_XMC1100_V1 – Infineon Technologiesboard
• Stack the DPS368 Pressure Shield2Go board on top of the XMC 2Go as shown in the picture
• The additional pin on the left-top side (designated with NC) is not connected to the XMC 2Go board
• Using the GitHub – Infineon/XMC-for-Arduino: Integration of Infineon’s XMC microcontrollers into the Arduino IDE. Arduino integration, the GitHub – Infineon/DPS368-Library-Arduino: Library of Infineon’s highly sensitive DPS368 pressure sensor for Arduino.for the DPS368 can be directly used

Steps

• Open one of the examples for the DPS368 from File – Examples and select as board XMC1100 XMC2Go
  Connect the stacked boards to the PC and press the Upload button

• Select the related COM port from Tools – Port and open the serial monitor with the set baud rate (see sketch/code with Serial.begin();)

https://github.com/Infineon/XMC-for-Arduino
https://github.com/Infineon/DPS368-Library-Arduino

Important Warning

• The DPS368 has a maximum rating of 4 V
• Third-party boards with 5 V logic, e.g. the Arduino Uno, cannot be connected to the DPS368 Pressure Shield2Go board directly, even if the power is connected to the 3.3 V pin as the interface lines, e.g. SDA/SCL, will still be driven by 5 V
• Please use appropriate level shifting for these boards

Not possible

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Copyright © Infineon Technologies AG 2019. All rights reserved.
2019-04-17

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