P1 upload Protocol to EEPROM

pic18f2550

Hello,
is the protocol described somewhere how the upload is done in the P1 into the EPROM?

iseries

An EPROM program is loaded into hub ram that reads the data serially and writes it to EPROM.

So, there is no protocol for loading into EPROM.

Mike

Wuerfel_21

@iseries said:
An EPROM program is loaded into hub ram that reads the data serially and writes it to EPROM.

So, there is no protocol for loading into EPROM.

Mike

That's not correct, P1 has EEPROM programming built-in.

There was a description of the protocol somewhere.

macca

@pic18f2550 said:
Hello,
is the protocol described somewhere how the upload is done in the P1 into the EPROM?

Aside from the uploader sources, I found this document in my archives, I don't remember where it comes from (guess from a forum post, but the search is stil a pain...).

iseries

Programming commands:

// Shutdown command (0); 11 bytes.
static const uint8_t shutdownCmd[] = {
    0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0xf2};

// Load RAM and Run command (1); 11 bytes.
static const uint8_t loadRunCmd[] = {
    0xc9, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0xf2};

// Load RAM, Program EEPROM, and Shutdown command (2); 11 bytes.
static const uint8_t programShutdownCmd[] = {
    0xca, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0xf2};

// Load RAM, Program EEPROM, and Run command (3); 11 bytes.
static const uint8_t programRunCmd[] = {
    0x25, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0xfe};

Mike

pic18f2550

oh dear,
pulse width modulation.
I thought that was a normal serial transmission like with a SIO.
No, I'd rather build an overlay loader.
Thanks for the help.

rosco_pc

This describes the download protocol for P1: https://github.com/rosco-pc/propeller-wiki/wiki/Download-Protocol

pic18f2550

Nice page, unfortunately the links go nowhere.

rosco_pc

Yeah, this is a copy of an older wiki. Forum changed links multiple times since that page was written

DigitalBob

It would be great if the spin tool could upload from the Eprom, then display it as the original spin code. I use some Idec products, such as PLC's and HDMI screens, both can have their programs uploaded and displayed as their original programs.

pic18f2550

@rosco_pc said:
Yeah, this is a copy of an older wiki. Forum changed links multiple times since that page was written

This is extremely depressing,

rosco_pc

actually try it now, turned out I already updated the links once upon a time, but they have now changed to https

pic18f2550

Thanks, I'll watch it tonight. Now I have to go to bed.

RossH

It's fairly simple to implement as a serial protocol. Catalina's payload loader has a simple implementation of the EEPROM load protocol. See payload.c in the Catalina sources.

Ross.

Genetix

Eons and forum changes ago Chip had posted the Spin code for the Propeller ROMs.

rosco_pc

@Genetix said:
Eons and forum changes ago Chip had posted the Spin code for the Propeller ROMs.

from the wiki page: https://forums.parallax.com/discussion/101483/propeller-rom-source-code-here