Scott Perrin

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10 years, 4 months ago.

Problem with LPC4088 Quickstart + QSB BASE BOARD + LCD 4.3 INCH TFT and Ethernet communications

We have a successful server application running on the LPC4088 Quickstart board communicating over the Ethernet port to a client computer (LwIP stack), while connected to the Base board and powered only through the USB programming port. After adding the 4.3 inch LCD to the Base Board via the ribbon connector, the Ethernet port communication no longer functions with our server program. Power is supplied to the Base Board through a 5v/2a power supply. Note that the bubbles demo works on the setup via the 4.3 LCD display when loaded independently onto the LPC4088 Quickstart board, and the bubbles code executes fine when integrated with the server program. However, there still appears to be a conflict between the Ethernet port and display. Any Ideas?

Question relating to:

Last updated: 09 Apr 2014
Example for the LPC4088 QSB Base Board GUI, LPC4088

We have put together a very basic application with two threads - one running the bubble demo and one continuously using HTTP GET to download a page and display the contents in the console.

http://mbed.org/users/embeddedartists/code/debug_eth_plus_lcd/

The application has been running a couple of hours now without problem. Can you please test if it works for you?

posted by EmbeddedArtists AB 21 Jul 2014

The debug_eth_plus_lcd example runs for about 7 seconds and then the bubbles freeze and green blinking led goes out on our setup. The result is consistent after re-setting the board. Note the Ethernet port on the LPC4088 Quickstart board is plugged into a Cisco/Linksys wireless router. Any further thoughts?

posted by Scott Perrin 21 Jul 2014
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