A121
Acconeer AB
The A121 pulse coherent radar sensor is dependent on a software stack running on a host MCU.
Design DocumentRaw Githubusercontent
A121 Software Integration User Guide
Technical guide for integrating the Acconeer A121 radar sensor with host MCUs, covering hardware requirements, SPI communication, and Software Abstraction Layer (HAL) setup.
Overview
This software integration user guide provides technical instructions for interfacing the Acconeer A121 pulse coherent radar sensor with external microcontrollers or processors. It details the Hardware Abstraction Layer (HAL) requirements, including memory allocation, SPI bus communication up to 50 MHz, and GPIO control signals for sensor enablement and interrupts. The document outlines the Radar System Software (RSS) architecture and provides integration guidance for platforms such as the STM32L431CB and Raspberry Pi 4. It also includes specific HAL function implementations for power management, sensor supply control, and data transfer protocols.
Use Cases
- Radar sensor software development
- Custom MCU integration for A121 sensors
- HAL implementation for XM125 modules
- Developing pulse coherent radar applications
Topics
Acconeer A121
Radar Sensor
Software Integration
HAL
SPI communication
STM32L431CB
XM125
Pulse Coherent Radar
SDK
Radar System Software
RSS
Referenced Parts
XE121
Acconeer AB
It is a breakout board with an A121 radar sensor, crystal and pin-headers that matches the layout of Nucleo-64
STM32L431CB
STMicroelectronics
STM32L431CB: An ARM Cortex M4 MCU that is featured in our XM125 Entry+ module.
Raspberry Pi 4
Raspberry Pi
Raspberry Pi 4: Our standard EVK (XE121), running Raspberry Pi OS.
| A121 | Acconeer AB | The A121 pulse coherent radar sensor is dependent on a software stack running on a host MCU. |
| XE121 | Acconeer AB | It is a breakout board with an A121 radar sensor, crystal and pin-headers that matches the layout of Nucleo-64 |
| XM125 | Acconeer AB | ARM Cortex M4 MCU that is featured in our XM125 Entry+ module. |
| XC120 | Acconeer AB | XC120 + XE121 A121 EVK |
| STM32L431CB | STMicroelectronics | STM32L431CB: An ARM Cortex M4 MCU that is featured in our XM125 Entry+ module. |
| Raspberry Pi 4 | Raspberry Pi | Raspberry Pi 4: Our standard EVK (XE121), running Raspberry Pi OS. |