Documentation for “Zerocat Chipflasher” as of Wed, 01 Jan 2025 22:07:50 +0100
Repository:
Version: v2.1.0-0-850cd7bce
Branch: master
Propeller Spin/PASM Compiler 'OpenSpin' (c)2012-2016 Parallax Inc. DBA Parallax Semiconductor.
Version 1.00.78
Compiling...
../../firmware2/src/kick2.spin
|-pins.spin
|-ASCII.spin
|-error.spin
|-pins.spin
|-time.spin
|-serprog.spin
|-pins.spin
|-error.spin
|-pins.spin
|-time.spin
|-time.spin
|-ADC-monitor.spin
|-pins.spin
|-FullDuplexSerial.spin
|-serprog-SPI-PASM.spin
|-pins.spin
|-serprog-SPI-PASM-Pulse.spin
|-pins.spin
Done.
Program size is 8152 bytes
______________________________________________________________________________
********************************************************* File starts here ***
Zerocat Chipflasher --- Flash free firmware, kick the Management Engine.
Copyright (C) 2020, 2021, 2022, 2024 Kai Mertens
File kick2.spin --- The top object file for this firmware2 project.
This file is part of Zerocat Chipflasher.
See end of file for terms of use.
******************************************************************************
IMPORTANT NOTICE
================
* On PCBv1, the SPI CE# line is pulled up via trimmer.
Adjust a reasonable value, not too small.
* On PCBv2, the SPI CE# line is pulled up via R23 and R10.
These resistors are populated with 90 Ohm each, forming a pull-up
value of 45 Ohm on the first series of devices, shipped in 2024 and
earlier.
That is too small!
(On the chip flasher development board, this pull-up is set to
47.62 Ohm, which works in test setups with hand-made wiring.)
As a workaround, cut one end of R10 with a pince and twist the
resistor aside, carefully. The remaining pull-up value is 90 Ohm
(the value of R23), which should be a reasonable value for most use
cases.
In 2025, the PCBv2 candidate for FSF Respect Your Freedom (RYF)
certification will provide sockets for R23 and R10, such that this
pull-up can be adjusted. However, the formed resistor value must
not be smaller than 42 Ohm, otherwise the Propeller pins 0 and 1
will be damaged.
These equations apply:
1 1 1
R_pull = --- , x = ----- + -----
x R23 R10
# Object Configuration (set via Makefile)
Tell us which interface to use:
* connect
* flashrom
* terminal
* none
# Interface Description
Object "../../firmware2/src/kick2" Interface:
PUB kick2
Program: 2034 Longs
Variable: 191 Longs
# Loaded Objects
Load pin configuration object.
Load ASCII object.
Load error object.
Load serprog object.
# Constants
* System Speed
* Basic Timing
* Project's Memory Usage
# Functions
__________
PUB kick2
This is the Chipflasher's new firmware, coded in Spin/PASM.
******************************************************************************
Terms of Use:
Zerocat Chipflasher is free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
Zerocat Chipflasher is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License along
with Zerocat Chipflasher. If not, see <http://www.gnu.org/licenses/>.
************************************************************** End of File ***