NEC MPI4E Raspberry Pi Compute Module Setup Guide

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7.5 To change the keyboard layout to US from a terminal window ................................................. 54

7.6 To add and remove packages from Raspberry Pi OS .................................................................. 55

7.7 To update the Raspberry Pi ......................................................................................................... 55

7.8 To install the Python serial module ............................................................................................ 55

7.9 To mount a USB flash drive from the terminal ........................................................................... 55

7.10 To access an SMB (Windows share) drive from the Raspberry Pi OS desktop ........................... 56

7.11 To list connected USB devices .................................................................................................... 56

7.12 To show available disk space ...................................................................................................... 56

7.13 To show internal information about the Raspberry Pi ............................................................... 56

7.14 To download a file to the current directory ................................................................................ 56

7.15 To find a file by name .................................................................................................................. 57

7.16 To edit a protected system configuration file from the Raspberry Pi OS desktop ..................... 57

7.17 To prevent the screen saver from blanking the screen after several minutes ........................... 57

7.18 Monitoring the system processes, CPU usage, and memory ..................................................... 57

7.19 To enable and disable video output from the Compute Module to the display ........................ 57

7.20 To create an image of the Compute Module to backup or clone ............................................... 58

7.21 Debug GPIO lines and overlay assignments ................................................................................ 58

7.22 Assign different MAC address to the network interfaces ........................................................... 58

8 Troubleshooting .................................................................................................................. 59

9 Video CODECs .................................................................................................................... 64

10 Python Based NEC PD SDK ............................................................................................... 65

11 Compute Module Configuration Tool for Raspberry Pi OS ............................................. 67

12 Wireless connectivity installation and configuration ...................................................... 69

12.1 Important cautions ..................................................................................................................... 69

12.2 Parts identification ...................................................................................................................... 70

12.3 Installing the antenna connector to the Compute Module and routing the coax cable ............ 71

12.4 Enabling and disabling Wi-Fi at the hardware level .................................................................... 76

12.5 Selecting the external antenna in software ................................................................................ 76

12.6 Bluetooth functionality ............................................................................................................... 76

12.7 Troubleshooting wireless functionality ....................................................................................... 76

13 External reference information .......................................................................................... 78

14 Frequently Asked Questions ............................................................................................. 80

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NEC MPI4E RaspberryPi 4 System on a Chip Solution