warehack.ing/skywalker-1
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
No description
8 commits 1 branch 0 tags 3.5 MiB
Find a file
Ryan Malloy 782f5a0e8d Correct DiSEqC analysis and add complete timing chain documentation 
Major correction: All firmware versions use GPIO bit-banging for DiSEqC,
NOT I2C-based control as previously reported. Deep decompilation of the
sub-functions (byte transmit, bit symbol, tone burst) across v2.06, Rev.2,
and v2.13 reveals identical Manchester encoding algorithms with only the
data GPIO pin changed per PCB revision:
  - v2.06: P0.7, Rev.2: P0.4, v2.13: P0.0
  - P0.3 (22kHz carrier gate) unchanged across all versions

New section 7: Complete DiSEqC timing chain analysis including:
  - Timer2 configuration (RCAP2=0xF82F, 4MHz clock, 500us tick)
  - Manchester encoding waveforms (3 ticks/bit, 1.5ms/bit, 667 baud)
  - Byte transmission (8 data + odd parity = 13.5ms)
  - Tone burst timing (25 ticks = 12.5ms)
  - CPU clock compensation in delay function
  - External 22kHz oscillator architecture
2026-02-11 11:11:54 -07:00
docs/diseqc Initial commit: Genpix SkyWalker-1 DVB-S driver source and DiSEqC docs 2026-02-11 04:22:13 -07:00
firmware-driver Extract firmware from official Genpix updater EXEs via Wine memory dump 2026-02-11 06:05:13 -07:00
firmware-dump Add Rev.2 v2.10.4 64K Ghidra image for 8051 analysis 2026-02-11 10:27:05 -07:00
tools Extract firmware from official Genpix updater EXEs via Wine memory dump 2026-02-11 06:05:13 -07:00
.gitignore Initial commit: Genpix SkyWalker-1 DVB-S driver source and DiSEqC docs 2026-02-11 04:22:13 -07:00
firmware-analysis-v206-vs-v213.md Correct DiSEqC analysis and add complete timing chain documentation 2026-02-11 11:11:54 -07:00
gp8psk-driver-analysis.md Add Linux gp8psk kernel driver analysis and firmware-driver correlation 2026-02-11 10:29:43 -07:00