TIDUEM8B March   2019  – February 2021

 

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2.2.2 MSP432P4111

The SimpleLink™ MSP432P4111 MCUs are optimized MCUs that deliver ultra-low-power performance with FPU and DSP extensions. This device has an Arm® 32-bit Cortex®-M4F CPU with Floating-Point Unit and Memory Protection Unit, a real-time clock, LCD driver, port mappable GPIOs, an AES encryption and decryption accelerator, and multiple serial communication options. The MSP432P4111 device is part of the SimpleLink MCU platform, which consists of Wi-Fi®, Bluetooth® low energy, Sub-1 GHz, and host MCUs. All of these devices share a common, easy-to-use development environment with a single-core software development kit (SDK) and rich tool set.

The MSP432 MCU in this design retrieves voltage and current samples from the ADS131M04 device and calculates metrology parameters. In addition, the device also keeps track of time with its RTC module, drives the LCD on the board with its internal LCD driver module, and uses one of its UART interfaces to communicate to a PC GUI using either the isolated RS-232 or isolated RS-485 circuit of the board. The CRC module of the MSP432 MCU is also used to accelerate the CRC calculations that are done to verify the integrity of the ADC packet sent by the ADS131M04 device.