NEC C751Q Manuals

Table of Contents

• • 2

    Introduction
  • 3

    Contents
  • 3

    Table of Contents
  • 6

    Revision History
  • 7

    Basic Features
  • 9

    GPIO Summary
  • 9

    Operating System Programming Procedure
  • 9

    Requirements

• 10

  1 Basic Setup and Configuration Steps

• 11

  2 Installing the Compute Module and NEC Compute Module Interface Board to the Display

• 14

  3 Connections and Internal Operation

  • 14

    USB Device Connections to the Compute Module
  • 15

    USB Connections for Programming the Compute Module
  • 16

    LAN Connections
  • 17

    Software Control Via IR Remote

• 21

  4 Preparation

• 22

  5 Operating System Summary

• 25

  6 Preparing and Running the Tools to Make the Compute Module Appear As a Mass Storage Device

  • 25

    Using a Windows PC As a Host
  • 28

    Using a Raspberry Pi 1, 2, or 3 As a Host

• 32

  7 Miscellaneous Configuration Items

  • 32

    Configuring the Correct HDMI Video Level Encoding and Decoding
  • 33

    To Disable Overscan (If Black Bars Are Visible On the Sides of the Screen)
  • 34

    To Rotate the Screen Image to Portrait Orientation
  • 34

    To Enable Support for the IR Remote Receiver Using "Lirc
  • 35

    To Test Support for the IR Receiver By Outputting Raw Data
  • 36

    Enabling the Serial Port (UART) to the Display and Allowing Application Access
  • 37

    Testing Internal Serial Communications to the Display Using the Python Based NEC PD SDK
  • 38

    Configuring the Compute Module to Shutdown Using Shutdown Signal From the Display
  • 39

    Creating an Image of the Compute Module to Backup or Clone
  • 39

    Reading and Setting the Display's Internal Real Time Clock (RTC) From the OS
  • 39

    Using the Display's Watchdog Timer (WDT)
  • 41

    Controlling the Compute Module Cooling Fan
  • 41

    Controlling the Compute Module Power
  • 41

    Checking and Updating the Display Firmware Version

• 43

  8 Related OSD Settings

  • 43

    Compute Module Menu  Power  Power Supply
  • 43

    Compute Module Menu  Power  Auto Power On
  • 43

    Compute Module Menu  Service Menu  Setting Lock
  • 44

    Compute Module Menu  Service Menu  USB Boot Mode
  • 44

    Compute Module Menu  Service Menu  IR Signal
  • 44

    Compute Module Menu  Service Menu  Monitor Control
  • 45

    Compute Module Menu  Service Menu  Shutdown Signal
  • 45

    Compute Module Menu  Service Menu  Shutdown Signal  Power Supply Off Delay
  • 45

    Compute Module Menu  Service Menu  WDT
  • 46

    Compute Module Menu  Service Menu  WDT  Start Up Time
  • 46

    Compute Module Menu  Service Menu  WDT  Period Time
  • 47

    Control Menu  USB  External Control
  • 47

    Control Menu  USB  PC Source
  • 49

    Control Menu  USB  USB Power
  • 50

    Control Menu  CEC  CEC
  • 50

    Control Menu  CEC  Search Device
  • 51

    Expert Menu  Compute Module  CM Fan Power
  • 51

    Expert Menu  Compute Module  CM Auto Shutdown

• 53

  9 Useful Information and Commands

  • 53

    To Find Out the IP Address of the Compute Module From a Terminal Window
  • 53

    To Restart From a Terminal Window
  • 53

    To Shutdown From a Terminal Window
  • 53

    To Run the Raspberry Pi Config Utility From a Terminal Window
  • 53

    To Change the Keyboard Layout to US From a Terminal Window
  • 54

    To Add and Remove Packages From Raspbian
  • 54

    To Update the Raspberry Pi
  • 55

    To Install the Python Serial Module
  • 55

    To Mount a USB Flash Drive From the Terminal
  • 55

    To Access an SMB (Windows Share) Drive From the Raspbian Desktop
  • 55

    To List Connected USB Devices
  • 55

    To Show Available Disk Space
  • 56

    To Show Internal Information about the Raspberry Pi
  • 56

    To Download a File to the Current Directory
  • 56

    To Find a File By Name
  • 56

    To Edit a Protected System Configuration File From the Raspbian Desktop
  • 56

    To Install a Minimal Windowing System On Jessie Lite
  • 57

    To Prevent the Screen Saver From Blanking the Screen After Several Minutes
  • 57

    To Enable IR Remote Control Using CEC From OSMC
  • 57

    To Enable IR Remote Control Using Lirc From OSMC
  • 57

    Monitoring the System Processes, CPU Usage, and Memory
  • 58

    To Enable and Disable Video Output From the Compute Module to the Display

• 59

  10 Troubleshooting

• 62

  11 Codec Licenses

• 63

  12 Python Based NEC PD SDK

• 65

  13 Compute Module Configuration Tool for Raspbian

• 66

  14 External Reference Information

• 67

  15 Frequently Asked Questions

• 70

  16 Known Issues

• 71

  17 Support