jeanthom

Fixing an Askoll M550 motor module, commonly found on some Whirlpool models (F22 error).

CHECK ALL SMD RESISTORS. INCLUDING THOSE HIDDEN UNDER THE SILICON PUTTY. MINE WAS BROKEN DUE TO AN OPEN-CIRCUIT ON A 33R RESISTOR NEXT TO A BIG CAPACITOR.
Some people (https://sites.google.com/site/entomeco/motor-m500-askoll) have reported issues with 150R resistors.

jeanthom

Decoding UART to plaintext

sigrok-cli -i my-sigrok-capture.srzip -P uart:baudrate=115200:rx=D0 -A uart=rx_data  | cut -d ' ' -f 2 | xxd -r -p > my-decoded-capture.txt

jeanthom

This short tutorial explains how to run DiskWarrior 5 from the macOS recovery without using a USB key (ideal for helping someone over the phone).

1. Boot the Macintosh into recovery mode (Cmd+R at boot)
2. Ensure the Macintosh is connected to the internet
3. Open a terminal
4. Create a RAM disk (I chose a 1GB size)

diskutil erasevolume HFS+ 'RAM Disk' `hdiutil attach -nobrowse -nomount ram://2097152`

5. Unzip DiskWarrior.dmg from the DiskWarrior5.zip Alsoft sent you, and upload it to some place that can be accessed via unsecured HTTP (I used transfer.sh)

jeanthom

KiCad recipe: schematic to LaTeX

1. Open your schematic, and export it to PostScript (we'll call it myschem.ps)
2. Install ps2eps and run the following command: ps2eps -R + myschem.ps
3. Include the newly created eps file into your LaTeX document using includegraphics

jeanthom

GHDL recipe: debugging assertion warnings

This method doesn't work with ghdl-mcode.

1. Build your simulation with debug infos (ie. add -g flag to the ghdl build)
2. Open the generated executable in a debugger
3. Add a breakpoint on the __ghdl_fatal function (in gdb b __ghdl_fatal)
4. Run the program with --assert-level=warning as its argument (in gdb run --assert-level=warning)
5. Use the debugger backtrace functionality (in gdb bt) to resolve the origin of the issue

jeanthom

diff --git a/nmigen/back/rtlil.py b/nmigen/back/rtlil.py
index 100df5a..7581163 100644
--- a/nmigen/back/rtlil.py
+++ b/nmigen/back/rtlil.py
@@ -749,6 +749,9 @@ class _StatementCompiler(xfrm.StatementVisitor):
     on_Assume = on_property
     on_Cover  = on_property
 
+    def on_Display(self, stmt):
+        pass

jeanthom

Migrating a Migen codebase to nMigen

In addition to nmigen.compat.

Signals

max=

Replace:

s = Signal(max=1234)

jeanthom

• Fixing the RFID circuit of an HP LTO-2 drive
• Manually ejecting an LTO tape
• Cleaning a sticky head