NUVOTON NUMAKER M2L31KI

Overview

The NuMaker M2L31KI is an Internet of Things (IoT) application focused platform specially developed by Nuvoton. The NuMaker-M2L31KI is based on the NuMicro® M2L31 series MCU with ARM® -Cortex®-M23 core.

M2L31KI

Features:

  • 32-bit Arm Cortex®-M23 M2L31KIDAE MCU

  • Core clock up to 72 MHz

  • 512 KB embedded Dual Bank Flash and 168 KB SRAM

  • USB 2.0 Full-Speed OTG / Device

  • USB 1.1 Host

  • Arduino UNO compatible interface

  • One push-button is for reset

  • Two LEDs: one is for power indication and the other is for user-defined

  • On-board NU-Link2 ICE debugger/programmer with SWD connector

More information about the board can be found at the NuMaker M2L31KI User Manual.

Supported Features

  • The on-board 12-MHz crystal allows the device to run at its maximum operating speed of 72MHz.

The development board configuration supports the following hardware features:

Interface

Controller

Driver/Component

NVIC

on-chip

nested vectored interrupt controller

SYSTICK

on-chip

system clock

UART

on-chip

serial port

GPIO

on-chip

gpio

Other hardware features are not yet supported on Zephyr porting.

More details about the supported peripherals are available in M2L31 TRM Other hardware features are not currently supported by the Zephyr kernel.

Building and Flashing

Flashing

Here is an example for the Hello World application.

On board debugger Nu-link2 can emulate UART0 as a virtual COM port over usb, To enable this, set ISW1 DIP switch 1-3 (TXD RXD VOM) to ON. Connect the NuMaker-M2L31KI to your host computer using the USB port, then run a serial host program to connect with your board. For example:

$ minicom -D /dev/ttyACM0
# From the root of the zephyr repository
west build -b numaker_m2l31ki samples/hello_world
west flash

Debugging

Here is an example for the Hello World application.

# From the root of the zephyr repository
west build -b numaker_m2l31ki samples/hello_world
west debug

Step through the application in your debugger.

References