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.