README.md

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

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)

1. When you upgrade the NuLink2FW.bin greater than or equal to version v3.05.7174r, open NU_CFG.TXT file in pop-up "NuMicro MCU" disk, you will see some options in NU_CFG.TXT.
   
2. For example, you can see BRIDGE_MODE and CMSIS-DAP options.

• Set BRIDGE_MODE=1 then re-plug in USB cable, 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 an "Nu-Link2-Bridge Virtual Com Port" in device manager.)
  
• Set BRIDGE_MODE=0 then re-plug in USB cable, an USB HID interface supports ISP Tool 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.
  (You will see an USB HID interface [HID_ISP][VID:0x0416, PID:0x520*, interface:05] in device manager.)
• Set CMSIS-DAP=1 then re-plug in USB cable, it presents one more interface HID_CMSIS-DAP, this is handy if you want to use CMSIS-DAP protocol. (You will see an USB HID interface [HID_CMSIS-DAP][VID:0x0416, PID:0x520*, interface:06] in device manager.)

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: HID_ICE(proprietary commands)/MSC/VCOM/HID_CMSIS-DAP/HID_ISP or VCOM_Nu-Link2-Bridge (set in NU_CFG.TXT)

NuLink2_DAPLink.bin

• Open source: DAPLink on Nu-Link2-Pro
• Support many third party IDE
• USB interfaces: HID(CMSIS-DAP commands)/MSC/VCOM

Some other example projects for NuLink2

• Nu-Link2-Pro_Offline_ISP
• NuLink2_ICP_Library