Important changes to forums and questions
All forums and questions are now archived. To start a new conversation or read the latest updates go to forums.mbed.com.
11 years ago.
USB Bootloader LPC11U24
Hi all,
I have just made a custom PCB for the 48 pin LPC11U24. I built it up today and it all worked too easily (always skeptical). The target enumerated as a mass storage device with a firmware file in. I deleted the firmware file and placed a test program (blinky) into the target. This is running with no problems. My issue is that now my program is running I cannot get my PC to detect the target again to reprogram. Does anybody know if there is a reason for this? There's a possibility it's a hardware fault but I'm surprised that the board worked with no problems originally.
Thanks in advance for any help received.
Kyle.
1 Answer
11 years ago.
Hello Lerche,
I had a placed a diode in the wrong orientation meaning the ISP would not pull to ground.
How did you find the translation from 64 pin package to 48? Can you use pretty much any program you have written for the 64 pin in the compiler or are there any configurations that need amending, e.g. pin names etc...
I have uploaded a picture of the current board, mainly because I've never updated a photo!
cheers,