STM32 Discovery kit and software simplifies IoT-node design

STM32 Discovery kit and software simplifies IoT-node design

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STMicroelectronics’s new B-L4S5I-IOT01A STM32 Discovery kit comes with a port of FreeRTOS integrated into the STM32Cube ecosystem and ready to connect to AWS.
By Ally Winning


The kit’s hardware includes an STM32L4+ MCU board with a wide selection of ST MEMS sensors, an STSAFE-A110 secure element, Bluetooth 4.2 and Wi-Fi modules, and an NFC tag with printed antenna. The kit comes with the X-CUBE-AWS v2.0 STM32Cube Expansion Pack for a complete reference design to ease and quicked product development.

The new X-CUBE-AWS v2.0 pack provides proper integration of the FreeRTOS standard AWS connectivity framework within the STM32Cube environment. This integration allows the use of FreeRTOS and STM32Cube the need to develop additional software. It also supports AWS native services including standard Firmware Over The Air (FOTA) tasks and takes care of interactions with the on-board STSAFE-A110 secure element, including looking after AWS IoT Core Multi-Account Registration and assigning security-critical operations during boot-up, device authentication, and OTA firmware verification.

The STM32L4+ board has been developed to meet the performance and power demands typically found for IoT nodes. The STM32L4S5VIT6 ultra-low-power Arm Cortex-M4 microcontroller integrates 2MB Flash, 640KB RAM, digital and analog peripherals, and a hardware encryption accelerator. The on-board sensors include the HTS221 capacitive digital relative-humidity and temperature sensor, LIS3MDL high-performance 3-axis magnetometer, LSM6DSL 3D accelerometer and 3D gyroscope, LPS22HB absolute digital output barometer, VL53L0X Time-of-Flight and gesture-detection sensor, and two digital omnidirectional microphones.

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