Nuvoton's NuTool - PinView is a visualized pin status inspection tool.

When programs are running or debugging, it can display the pin's I/O device's status intuitively and give warnings for some of the more common pin errors.

NuTool - PinView can be run as an independent program or can be started as a plug-in program of Keil or IAR.

When ran as an independent program, it can be used to "view" the pin statuses of the chip without interrupting the programs in the chip, and File → Run Script in the menu can be used to load customized lua scripts of users or read and write to the memory of the chip or the values of the registers.

When ran as a plug-in program of Keil or IAR, it can be started with the integrated debugging environment and reflect the pins' changes after each step of debugging in real-time. When programs are running, the PinView window can update the pins periodically according to the refresh frequency set.

NuTool - PinView has obtained international patents, making Nuvoton the exclusive chip supplier that provides this debugging tool.

NuTool - PinView official download location

https://www.nuvoton.com/resource-download.jsp?tp_GUID=SW1320200221181935