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.

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 [1].

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 [1] 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