IDE and Driver (official download link)

• KEIL Nu-Link debugger driver
• IAR Nu-Link debugger driver
• NuEclipse IDE

Programmer (official download link)

• ICPTool: NuMicro ICP Programming Tool
• ISPTool: NuMicro ISP Programming Tool
• NuLink command tool

Open source code

• ISPTool
• ISPLib and examples
• Nuvoton customized pyOCD
• Nuvoton customized openOCD

Coding assistant and debugger (desktop)

• NuTool-PinConfigure
• NuTool-ClockConfigure
• NuTool-LCDView
• NuTool-PinView

Coding assistant (cloud)

• NuTool-PinConfigure
• NuTool-ClockConfigure
• NuTool-LCDView

Signal pass-through/monitor (I2C/SPI/CAN of Nu-Link2-Pro):

• NuTool-USB_to_Serial_Port

4 Ports CANFD Analyzer Tool:

• CANFD Analyzer

Apps

• NuBLE-Android
• NuBLE-iOS
• NuISPTool-Android

Machine learning development environment

• NuEdgeWise

When using the software development tools above, you may need a USB adapter. Here, we introduce a new feature-rich Nu-Link2-Pro adapter to you.

• Where to buy
• Nu-Link2-Pro Debugger and Programmer User Manual
  On this page, we will only focus on the feature-rich Nu-Link2-pro. If you wish to learn about other types of Nu-Link, please click the link.

An overview picture of software tools, adapter and targets

Users can reprogram Nu-Link2-Pro with another .bin file using the following instructions (Windows OS)

1. Press the button on Nu-Link2-Pro and plug in the USB cable.
2. The "Nu-Link2-Pro" disk will appear. (If you see the disk name as "NuMicro MCU", it will upgrade target the device firmware instead of Nu-Link2-Pro itself)
3. Drag and drop the Nu-Link2-Pro firmware .bin file into the disk.
4. Re-plug the USB cable and it's done.

1. When you upgrade the NuLink2FW.bin to a version greater than or equal to v3.09.7380, you will see some options in NU_CFG.TXT.

• Open the NU_CFG.TXT file in the pop-up "NuMicro MCU" disk
  

2. For the Nu-Link2-Pro, you will see POWER-MODE and BRIDGE-MODE options. You need to re-plug in the USB cable to activate the setting.

• Set POWER-MODE for SWD output voltage level (mainly for CMSIS-DAP interface use)

• Set BRIDGE-MODE=0; this is the default setting. It has a WebUSB interface conforming to the CMSIS-DAP protocol, and you can connect to KEIL Studio Desktop/Cloud via this interface. Note that CMSIS-DAP will be disable in other BRIDGE-MODE (Limited USB endpoints).
  

• Set BRIDGE-MODE=1; the pass-through bridge function of Nu-Link2-Pro will be enabled (The word Nu-Link2-Bridge will be used to represent the pass-through bridge application on Nu-Link2-Pro adapter). Nu-Link2-Bridge pass-through the data between the VCOM port and I2C/SPI/RS485/CAN interfaces. (You will see a "Nu-Link2-Bridge Virtual Com Port" in device manager.)

• Set BRIDGE-MODE=2; a USB HID interface that supports ISPTool will be enabled. This USB HID interface doesn't pass through data, it communicates with ISPTool via HID_ISP and offers I2C/SPI/RS485/CAN interfaces for ISPTool.

• Set BRIDGE_MODE=3; a USB HID interface that supports Boot_Loader_ISPTool will be enabled. This USB HID interface doesn't pass through data, it communicates with Boot_Loader_ISPTool via HID_MKROM_ISP, and offers I2C/SPI/RS485/CAN interfaces for Boot_Loader_ISPTool. (this mode need the firmware later than v3.10)
  Only the NuMicro chip that supports mask ROM Boot Loader (e.g., M460 series) can commnuicate with Boot_Loader_ISPTool

3. If you use Nu-Link2-ME, it doesn't support BRIDGE functions, and you will only see the CMSIS-DAP option.

• Set CMSIS-DAP=1; this is the default setting. It has a WebUSB interface conforming to the CMSIS-DAP protocol, and you can connect to KEIL Studio Desktop/Cloud via this interface.
• Set CMSIS-DAP=0; it will disable CMSIS-DAP and enable the Nu-Link2 "USB BULK_ICE" interface (it's faster than "USB HID_ICE").

• Proprietary code
• Support NuMicro 8051, offline programming, encryption during data transmission, unlimited flash break points, NuMicro chip-specific features (config0/config1 dataflash setting, KPROM, etc.)
• USB interfaces: MSC/VCOM/HID_ICE(proprietary commands) or CMSIS-DAPv2 WinUSB + WebUSB CMSIS-DAP/VCOM_Nu-Link2-Bridge or HID_ISP (defined by BRIDGE-MODE of NU_CFG.TXT)

• Open source: DAPLink on Nu-Link2-Pro
• Support many third party IDE
• USB interfaces: MSC/CDC/CMSIS-DAPv2 WinUSB/WebUSB CMSIS-DAP

• Nu-Link2-CMSIS_DAP
• Nu-Link2-ICP_Library
• Nu-Link2-Pro_Offline_ISP