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UNO-R4CommandLine_Parser

Arduino UNO-R4: CommandLine_Parser An example of a simple ASCII commandline- interface (CLI) with elementary File- functions. Gives a little more comfort on Commandline. Supports VT100-Terminal emulation (like TeraTerm, PUTTY, GTKTerm and other) on the USB-Port. This project is a set of helpful functions for the Arduino UNO-R4 with a DS1307-RTC and SD-Card. It's a nice combination for simple User IO and additional applications enhancements.
IMG_0578_comp An UNO-R4 minima with SD-Card, Battery bufferd RTC, BME680 and 20x4 LCD on the I2C- bus

The software supports the CPU internal RTC function and 4ticks/sec callback function for real-time applications.
In an equal form there is a 100 Hz GPT- Timer running with own callback.

X/Y-Modem File Transfer

Most of the Terminal emulations supports X- and Y-Modem File transfer. I think, sometime it's helpful to transfer files to/from the uC without stopping the full uC environment or removing the SD-Card from the uC.
From uC to host: The XModem transfer in 128Byte/Checksum and 1kB/CRC was implemented. YModem is not implemented. Reason: each file must be defined on the commandline - same like XModem.
Transfer rate: In the 128Byte-Transfermode the transfer rate is more then 20kByte/s and up to 70kByte/s in CRC-Mode.
The YModem transfer from host to uC reached transfer rates 23-60 kByte/s in my tests. The XModem transfer rate is 6-10 kByte/s in 128Byte mode and 20-50 kByte/s in 1k-CRC.
(I don't know why the YModem transfer is as faster as the same XModem 1k-CRC transfer)

  • The Filetransfer was tested with Tera-Term ((C) 1994-2021 T. Teranishi,TeraTerm Project)

List of commands

  • CD, MD, RD - directory handling
  • CONFIG - shows the SPI- configuration
  • COPY - copy a file from => to filename
  • DEL - removing file
  • DIR - shows the directory
  • DATE and TIME - get and set time/date value
  • TYPE - list an ASCII-File on your terminal
  • CLS - clear the VT100 screen and set the cursor position top-left
  • TEMP - not implemented
  • VER - shows some software informations
  • VOL - list the SD-Card information
  • XTRAN - file transfer from RasPi to host via XMODEM protocol (supports XModem 128Byte/ChkSum and 1K/CRC)
  • XREC - file transfer from host to RasPi via XMODEM protocol (supports XModem 128Byte/ChkSum and 1K/CRC)
  • YREC - file transfer from host to RasPi via YMODEM protocol (helpful to save many files on R4-system)

Needed:

  • external RTC- lib. from Manjunath CV
  • the SD-Card library must be available