Raspberry Pi Pico EEPROM Programmer - PicoPROM

As a first Raspberry Pi Pico project, I thought I'd make an EEPROM programmer, that you can use without needing any additional components - just the Pico and the EEPROM.

I'm considering a follow-up project doing the same thing with an Arduino Nano, without needing extra components like shift registers, so please comment if you're interested in that.

[GeorgeFoot]

Navigate to the "Releases" in GitHub to find the precomputed binary UF2 file.

Please do let me know here if you try this out, whether it works, and if you have any questions!

I'm also considering showing how to do the same thing as this using an Arduino Nano, without having to add extra ICs like shift registers.

[mheermance]

That's much faster than my homebrew Arduino EEPROM programmer.

[rpiflip]

I am going to use a level shifter from Adafruit to make this eeprom programmer a read/write programmer. I will let you know haw it turns out.

[stephenvalente]

Needs a PCB designing to make it look neat without all the wires at some point. Might give it a try if I ever get some free time!

[oliverdowning]

Great Project! exactly what I was looking for. I can't work out how to make my own EEPROM images however, how would I go about doing that for this programmer?

[paulmichaelfreedman]

Any chance of a read function with the use of level shifters?

[badpharma]

Excellent. I am a software developer and have been aske to develop a not-for-profit MP2/MP2.5/MP3/MP4 (AAC)/ACELP/LPC10e decoder for the Raspberry Pi Pico. My most obvious problem is that the Pico has 256K of RAM which is not enough since MP3/MP4 use 40 frames a second so not enough to even test a buffer-swapping 48KHz stereo file.
I am told that their are serial EEPROMs and it seems that each of the 2 CPUs on the Pico have their own I2S (and DMA to move stuff) ports. The final device will use a single M0+ clocked as slow as possible to save power but I'm interested to know how to attach a large (>16 mbyte) serial EEPROM (or EPROM) to the Pi Pico.
Obviously, it's a not-for-profit project but everyone is credited and receives some of the finished audiobook/audiolesson (for that is what they are) hardware.

[ericwalls]

You made that look like a snap!
Did I tell you that I accidently overwrote my micro s.d. card with all my programs!!!! Yargh! :○

[johngay]

Great little project.
But I'm a little confused about what EEPROM's are supported?
configs.c lists AT28C256, AT28C64B, AT28C64 & AT28C16
but I don't see where to change this?
The Readme says "Configuration can't be changed at runtime yet, it needs to be set in code" but doesn't say where.
And I'm not enough of a programmer to find that.
Since the Pico cannot read the EEPROM, obviously it cannot ask the EEPROM.
Wish this was available before I bought TL866.

[TimXJRSP]

Using Linux on a Chromebook - do you have a recommendation for the terminal emulator to send files with xmodem?

[dragonball.teorias]

It would be used to program SST49LF020

[Mr.Leeroy]

Could I clone 128k AT29 with it?
Oh, I guess not.
"Reading back and verifying is not supported and probably won't ever be"
Why so?

[henrybooks]

Hi, I'm new to the raspberry pi, but I was just wondering if you would be able to use a raspberry pi zero instead?

[goowatch]

What is the minimum access time of this programmer? I have a memory that has 70ns Max of tAcc. Would it be possible to use or adapt your project with that requirement?

[cyrill_va]

How did you make the file that gets flashed onto the eeprom?

[gurigraphics]

Would this work with 16M-BIT FLASH EEPROM?
Like Am29F400B or 9F030C or MX29F1610?

[deiviquinteropedraza]

Hola cómo hago para programar el chip de BIOS de un laptop con Raspberry pi pico

[johngay]

My build fails in xmodem.c function xmodem_receive
Invalid operands to binary lines 106 and 187:
if (get_absolute_time() > timeoutTime)

[_suptype_]

You do great things, but again no comment no describe, no knowledge. 😢 Simple: look I did this, I did that, I’m a great pretender. I had to unsubscribe. Why Ben Eater is so great for people? Because he shares his knowledge - you don’t. If you share, if you would teach, I would love to watch your movies.

[weihewang]

good attempt, but this way wasted too much GPIO, maybe using serial port is a better way