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ScioSense AS6031 STM32L476RG Library

STM32L476RG library for the AS6031 Ultrasonic Flow Converter.

AS6031 is an ultrasonic flow converter for the next generation of ultrasonic water and heat meters. The AS6031 converter produced by ScioSense. It comes in the size QFN48 package with digital SPI interface. This enables new use cases in single-chip solution provided ready flow information, system design compatible with mechanical meters, high flexibility in choice for external μP handling communication and further data management, precision down to low flow rates and leakage detection.

Links

Prerequisites

It is assumed that

  • The STM32CubeIDE has been installed. If not, refer to "Install the STM32CubeIDE" on the ST site.

  • The STM32CubeMX has been installed. If not, refer to "Install the STM32CubeMX" on the ST site.

  • The STM32CubeProgrammer could been installed, optionally. If not, refer to "Install the STM32CubeProgrammer" on the ST site.

  • The STM32CubeMonitor could been installed, optionally. If not, refer to "Install the STM32CubeMonitor" on the ST site.

  • The STM32CubeL4GettingStarted document is at its default location. Normally this is C:\Users\[your_username]\STM32Cube\Repository\STM32Cube_FW_L4_xx.yy.z\Documentation.

You might need to add your board to the STM32CubeIDE. This library was tested with the STM32 Nucleo-64 development board with STM32L476RG MCU. For the installation of the STM32L476RG in the STM32CubeIDE, see STM32L476RG Installation

Installation

Manual installation

  • Download the code from this repository via "Download ZIP".
  • In STM32CubeIDE, select Import > General > Existing Projects into Workspace... and browse to the just unpacked ZIP file.
  • if needed, include Source Library, select Open Properties > C/C++ General > Code Analysis > Paths and Symbols Includes > Add include directories > ../../_Src_Lib Move this directory up to the second place.
  • When the IDE is ready this README.md should be located in your workspace.

Wiring

General

Please make sure that you use the correct supply voltage:

  • The AS6031 runs at VDD = 2.1V(3.0V) to 3.6V. If you are using the Sciosense AS6031 breakout board, you can use VDD = 3.3 V thanks to the onboard LDO.
  • The SPI communication is 3.3 V tolerant.

Example with STM32L476RG (SPI)

This example shows how to wire a NUCLEO-L476RG with the AS6031 breakout board for SPI communication.

AS6031 breakout board STM32L476RG
VDD 3V3
GND GND
SCK PA5
MISO PA6
MOSI PA7
SSN PB6
INTN PA9

Example with STM32L476RG (AS6031 Nucleo Shield)

This example shows how to use a NUCLEO-L476RG with the AS6031 Nucleo Shield for SPI communication.

Interrupt functionality

To use the AS6031's interrupt functionality connect the interrupt pin of the AS6031 to a GPIO pin of your STM32L476RG. The interrupt pin uses VDD.

Build an example

To build a sample code

  • Clean Project
  • Index > Rebuild
  • Depending on the microcontroller, the pin assignment must be verified again.
  • Build Project

Contributing

Contributions in the form of issue opening or creating pull requests are very welcome!