NuMicro software development tools

Nuvoton tools official website

IDE and Debugger

• KEIL Nu-Link debugger driver installer
• IAR Nu-Link debugger driver installer
• NuEclipse installer
• PinView installer
• Customized pyOCD source code (using adapter firmware "NuLink2_DAPLink.bin")
• Customized openOCD source code (using adapter firmware "NuLink2FW.bin")

Programmer

• ICPTool installer
• ISPTool installer
• ISPTool source code
• ISPTool command set document
• NuLink command tool installer

Coding assistant

• NuTool-PinConfigure
• NuTool-ClockConfigure

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

• NuTool-USB_to_Serial_Port

Apps

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

Nu-Link2-Pro debugging and programming adapter

When using software development tools above, you may need an USB adapter. We introduce you a new feature-rich Nu-Link2-Pro adapter here.

• Where to buy
• User manual

An overview picture of software tools, adapter and targets

The firmware of Nu-Link2-Pro adapter

All Nu-Link2-Pro firmware binary files can be found here

User can re-program Nu-Link2-Pro to another .bin file by the following instructions (Windows OS)

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

More options for NuLink2FW (configuration file NU_CFG.TXT)

warning: The meaning of options for v3.09.7380 is different from v3.05.7174r ~ v3.08.7313. This document goes with the latest version (v3.09.7380), if you want to check old setting (v3.05.7174r ~ v3.08.7313), please see the old link.

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

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

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

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

• Set BRIDGE-MODE=0, this is default setting. It has a WebUSB interface conform CMSIS-DAP protocol, and you can connect KEIL Studio 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 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, an USB HID interface 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.

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

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

Comparison of NuLink2FW.bin and NuLink2_DAPLink.bin

NuLink2FW.bin

• Proprietary code
• Support NuMicro 8051, offline programming, user code read-out protection, unlimited flash break points, NuMicro chips 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)

NuLink2_DAPLink.bin

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

Some other example projects for NuLink2

• Nu-Link2-Pro_Offline_ISP
• NuLink2_ICP_Library