HPR4497: fixing 328eforth

Hacker Public Radio

Content provided by HPR Volunteer and Hacker Public Radio. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by HPR Volunteer and Hacker Public Radio or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://podcastplayer.com/legal.

4d ago

MP3•Episode home

This show has been flagged as Clean by the host.

Table of Contents

─────────────────

greetings
links to software
hardware
install
check it works
now the fix
outro

0 greetings

═══════════════════

continuation from episode 4388, review of the book the Arduino controlled by eforth by dr chen-hanson ting

1 links to software

═══════════════════

https://github.com/PeterForth/DR-TING-OFFETE-SVFIG-MIRROR, 328eforth source code

https://github.com/Ro5bert/avra, opensource assembler

https://www.engbedded.com/fusecalc/, configuration fuse calculator

https://github.com/avrdudes/avrdude, flashing software

https://github.com/oh2aun/flashforth, terminal shell programs

2 hardware

══════════

programmer, avrisp2 recommended, build your own

https://www.hackerpublicradio.org/eps/hpr2799/index.html

Arduino UNO R3, Arduino Nano

3 install

═════════

download 2159_328eforth.zip unzip that file then cd into it

build assembler file, avra 328eforth220.asm

50+ warnings that avra generates because it pads out the words

with null characters in order to get the write size for each word

an over view of whats going on in the build process

flashing process from the book,

avrdude -p m328p -c avrisp2 -e -U flash:w:328eforth220.hex:i -U lfuse:w:0xff:m -U hfuse:w:0xd8:m -U efuse:w:0xfd:m

what i use,

avrdude -p m328p -c avrisp2 -e -U flash:w:328eforth220.hex:i -U lfuse:w:0xe2:m -U hfuse:w:0xd8:m -U efuse:w:0xfd:m

4 check it works

════════════════

open terminal and plug in board, or reset board you should see,

328eforth v2.20 if you hit the return key you'll get an ok

5 now the fix

═════════════

clues from turnkey

flush+

: flush+ ( -- )

context @ context i!

cp @ cp i!

dp @ dp i!

last @ last i!

flush

;

\ flush+ at the terminal prompt saves words,updates the memory pointers

\ saving words across reboots

now you can save newly defined words across reboots

6 outro

═══════

You're currently going through a difficult transition period called, "Life."

Provide feedback on this episode.

859 episodes

#Tech News #Community Radio #Tech Interviews #Linux #Open #Software Freedom #HPR Volunteer #Hacker Public Radio #Tech Tips #Tech #Podcasting Education #Hobbies