37.4. Cherry Shell Barebone USB

37.4.1. Overview

The Cherry Shell Barebone example project demonstrates the basic usage of shell in bare-metal mode. In this project, you need to connect via USB PORT, and the shell requires a login. The default password is 12345678. After entering the password and pressing Enter, you will enter the shell. You can use the “help” command to view the available commands and variables.

Please refrain from using USB PORT assistants and consider downloading and using MobaXterm

37.4.2. Board Setting

No special settings

37.4.3. Running the example

  • After the project runs successfully, the serial terminal will output the following information:

[I/USB] Open ep:0x83 type:3 mps:8
[I/USB] Open ep:0x01 type:2 mps:512
[I/USB] Open ep:0x81 type:2 mps:512
Initialize shell successfully

  • If you manually enter the correct password “12345678” and press Enter, the terminal will output the following information:

[I/USB] Open ep:0x83 type:3 mps:8
[I/USB] Open ep:0x01 type:2 mps:512
[I/USB] Open ep:0x81 type:2 mps:512
Initialize shell successfully

  • open usb cdc port

  • If you manually enter the command “help” and press Enter, the terminal will output the following information:

cherry@hpm5301evklite:/$ help
total function 6
  test       -> /bin
  toggle_led -> /bin
  write_led  -> /bin
  exit       -> /sbin
  help       -> /sbin
  shsize     -> /sbin

total variable 2
  $PATH r-  11
  $ZERO r-   1
cherry@hpm5301evklite:/$

  • If you manually enter the command “toggle_led” and press Enter, the LED will toggle.

  • If you manually enter the command “write_led 1” and press Enter, the LED will turn on.

  • If you manually enter the command “write_led 0” and press Enter, the LED will turn off.