NuTiny ARM Cortex-M0 Starter Kit

[Ali_Challenger]

NuTiny-SDK-NUC140 (Blue PCB Board)

Hi,
when use the USB port "J1: USB port in NuTiny-EVB-NUC140" for the "NuTiny ARM Cortex-M0 Starter Kit" for HID environment do we have to power up the kit from external power supply or not?! thanks.

[ober]

It depends on the current requirement of your project. Since you are using HID, the USB connection must be there, so if the current consumption is not high, just use the power from USB.

[Ali_Challenger]

Actually I just used the example that provided with the kit, this example used to run the NuTiny as a mouse or keyboard.
So I uploaded to code by using the programmer/ debugger that located on the right side of the kit and its uploaded successfully but, when I moved the USB cable to the left side HID J1 that connected to the ARM chip it doesn't shows any response even the power LED indicator doesn't power up ?!

[ober]

Just check the schematic and the board itself, the Nutiny board does not populate diode D1. As I understand from Nuvoton engineering team, the D1 is not populated is due to protection purpose.

Try solder a schottky diode as shown will solve the problem.

[Ali_Challenger]

Thank you pretty much Mr. ober, for your help.
I tried it and it's work perfectly.

[Ali_Challenger]

Good evening,

How can I change the pins output voltage of this board?!

Is it work fine if I desoldered the shown resistor (actually I think it's not a resistor, it's just a jumper because i checked it shows 0 ohm), and then solder a jumper instead so I can easily change between 5V and 3.3V ?!?

Please advise me.
Thanks

[ober]

Yes, you can. But that decide the power from ICE (programmer) to the target board.

[Ali_Challenger]

Ok, thanks a lot Eng. Ober, for your reply.

But what about the programming voltage? I mean when I want to upload a program to the target "NUC140VE3AN" I have to select 3.3V only and after that change to 5V ?! or I can directly programming it via 5V?

Thank you.

[Idris]

Hi Ali_Challenger,

But what about the programming voltage? I mean when I want to upload a program to the target "NUC140VE3AN" I have to select 3.3V only and after that change to 5V ?! or I can directly programming it via 5V?

Yes, you can directly programming it via 5V.

[Ali_Challenger]

Hi Ali_Challenger,

But what about the programming voltage? I mean when I want to upload a program to the target "NUC140VE3AN" I have to select 3.3V only and after that change to 5V ?! or I can directly programming it via 5V?

Yes, you can directly programming it via 5V.

Thank you pretty much Eng. Idris, I will give it a try later.