Jump to content

Code not run when use external power

Recommended Posts

Hi everyone,

I am using MSP430G2 Launchpad to make strip LED effect, I used CCS to debug and flash to MCU, I have been facing with a strange problem, When I debug (press on resume button) my program work well, but I supply a external source, nothing happen. I have carefully measured voltage of external on board, it was fine. So my conclude is:

1. when I debug (USB power): program work.

2. when I plug out and plug in USB port of MSPG2, program did not work.

3. when I use external power: did not work.

4. I wonder about the program did not store on flash of MCU.

Please help to explain.

Thank in advance!

Share this post

Link to post
Share on other sites

Make sure RST is pulled up. On Launchpad it is being driven by the USB FET but depending on where you apply external power and your jumper config, the FET part if the LP might not be powered on.



Sent from my iPhone using Tapatalk

Share this post

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...