EA LPC4088 Display Module

The mbed-enabled LPC4088 Display Module from Embedded Artists lets you get up-and-running immediately with your graphical user interface application. It is ready for integration!

Overview¶

The heart of the design is NXP's Cortex-M4F based LPC4088 microcontroller running at 120 MHz. The LPC4088 Display Module is packed with features and is suitable for a wide range of applications that requires advanced communication and high quality graphic displays.

The module is perfect for prototyping and proof-of-concept projects as well as for integration into products. A comprehensive and professional software platform has been created for the LPC4088 Display Module; Save time, cost and reduce risk!

For more information, see Embedded Artists' Display Modules page. There are different display options for the module.

Features¶

• NXP's Cortex-M4F LPC4088 microcontroller, running at up to 120 MHz
• Multiple display options
  • 5 inch TFT with 800x480 pixels resolution and resistive touch panel
  • 4.3 inch TFT with 480x272 pixels resolution and resistive touch panel
  • 4.3 inch TFT with 480x272 pixels resolution and projected capacitive touch panel (5-point multitouch)
• Program + Data Flash
  • 512 KB on-chip + 16 MB QSPI (perfect for storing pictures and graphical elements)
• Data Memory
  • 32 MB SDRAM (x32 bit databus for high bandwidth access) + 96 KB on-chip SRAM + 4032 B on-chip E2PROM
• Dimensions: 122 x 99 mm
• Power: External 5V DC supply, or via micro-B USB HDK connector
• Connectors / Interfaces
  • 100/10Mbps Ethernet, RJ45 connector and unique MAC address
  • USB Host/Device interface connector (USB A/USB mini-B)
  • mbed HDK debug interface connector (USB micro-B)
  • uSD/transflash memory card interface connector
  • XBee^TM compatible connector for RF module add-on (20 pos connector)
  • Very simple expansion for custom specific I/O via 46 pos, 100 mil pitch pin header (second USB interface, UART, I2C, SPI, ADC, DAC, CAN, GPIO, timers, etc.)
• Debug
  • mbed-enabled via on-board HDK (CMSIS-DAP interface, USB drag-n-drop, Virtual COM port)
  • 10 position SWD/JTAG connector (ARM standard debug connector)
  • 6 position SWD Tag-Connect™ connector
• Other
  • Proper ESD protection on communication interfaces
  • CE certified (EMC, EMI, ESD)
  • Wide temperature range (-20 to +70 degrees Celsius, limited by LCD)
  • ISO 9001:2008 / ISO 14001:2004 produced
  • Compensated for carbon dioxide emission during production and shipping
• Ready for integration!

Pinning¶

Getting Started¶

For a detailed getting started tour, please see the documentation for the LPC4088 QuickStart Board documentation. All relevant steps are the same. LPC4088 QuickStart Board Getting Started Tour

Other guides:

Software¶

The software bundle that is provided to give you a flying start is based on the MBED framework. As the MBED framework is constantly evolving it happens that it from time to time is broken. To work around this and to make it easier for you, the user, we have selected a number of components and tested them so that they work well together.

Why use a Software Bundle?¶

1. It will give a Flying start
2. Selected libraries have been tested to work together
3. Modified standard libraries to enable features otherwise not exposed (or to fix bugs)
4. Hide some hardware APIs behind a BIOS

How do I use the Software Bundle?¶

The easiest way to use any of the components is to open the online compiler and click on the New Program button. Select the LPC4088 Display Module as target and then select one of the available templates to get started.

If you prefer to setup everything yourself instead of using the templates then:

1. Import the library into your project by clicking the Import button above
2. Copy the dm_board_config.h.txt file into the root of your project and rename it to dm_board_config.h
3. Modify the dm_board_config.h to match your requirements
4. Create a main.cpp file like this:

#include "mbed.h"
#include "DMBoard.h"

void main() {
  DMBoard::BoardError err;
  DMBoard* board = &DMBoard::instance();
  RtosLog* log = board->logger();
  Display* disp = board->display();
  
  do {
    err = board->init();
    if (err != DMBoard::Ok) {
      log->printf("Failed to initialize the board, got error %d\r\n", err);
      break;
    }

    // Everything initialized ok, add your code here

  } while(false);

  if (err != DMBoard::Ok) {
    log->printf("\nTERMINATING\n");
    mbed_die();
  }  
}

What is in the Software Bundle?¶

The software is divided into a couple of libraries:

DMSupport¶

This is the core of the software bundle as it holds the mbed code itself as well as the code to initialize and use all periperherals.

The library contains the following libraries:

In addition to the libraries above DMSupport also includes:

DMBasicGUI¶

This is a basic graphical library to help you get something on the display. It includes the following features:

DMemWin - emWin Graphical Library¶

This is one of the GUI libraries to help you create a better user interface on the display by giving you access to high level widgets rather than drawing each pixel yourself.

LPCWare describes emWin like this:

The high performance emWin embedded graphics library developed by SEGGER Microcontroller is now offered by NXP Semiconductors in library form for free commercial use with NXP microcontrollers.

Follow the link above to read more about what is available in the emWin library supplied by NXP.

To read more about emWin as well as see lots of examples on the Segger site.

Performance¶

The performance of the MCI, USB Host MassStorage and QSPI file systems has been measured as well as the performance of decoding images stored on each of them. The result is available on the Performance wiki page.

Scripts¶

Here we present some python scripts to help with common tasks. All scripts are written and tested in 2.7.6 but should work in 2.x versions higher as well. The scripts are probably incompatible with 3.x and above.

Installing python is out-of-scope, but instructions can be found here.

Example Programs¶

Firmware¶

If you are experiencing problems, perhaps there is an update for the DAPLink firmware that may help. Visit LPC4088DM Updating Firmware to read about available updates and how to apply it.

Things to Note¶

These are the things to take note of regarding the display modules:

• When updating to mbed OS 5 some functionality is no longer fully working.
  • USB is not officially supported for the LPC4088 in mbed OS 5. The USBHost library is still included in DMSupport, but should only be used for simple testing of USB host functionality. One thing to note is that USB Host and Ethernet/Network cannot be used simultaneously.
  • USB Device is not supported at all.
  • The HttpServer library is still included, but all functionality is no longer available.
• The current implementation of the USB Host stack is rather slow. It reaches about 82Kb/s read speeds and 65Kb/s write speeds. The uSD card is about 15 to 20 times faster. Read more about it on the Performance page.
• The MCIFileSystem used to read/write uSD cards has a limitation when writing to files. Read about it on the Using Filesystems wiki page which also shows a simple workaround.

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Questions

0 answers

About LPC4088 DISPLAY MODULE - 4.3" CAPACITIVE TP problem LU CHIN-HE
6 years, 11 months ago

display, EA, LPC4088, module

1 answer

How to use HTTPClinet on LPC4088_DM working with emwin? Wei Chang Shen
8 years, 8 months ago

display, EA, emwin, HTTPClient, LPC4088, module