julien/typewriter
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

feat(firmware): drive GDEY0579T93 EPD via dual-SSD1683 driver

Browse Source 
Add a thin dual-SSD1683 driver (src/epd.rs, ported from GxEPD2's
GxEPD2_579_GDEY0579T93) for the 792x272 e-paper panel: reset/init,
RAM addressing, the split-and-mirror full-frame blit across the
master/slave seam at x=396, and full-refresh waveform. Frame
implements embedded-graphics' DrawTarget.

Replace the Spike 1 blink harness in main.rs with the Spike 2 test:
SPI at 4 MHz over SCK 12 / DIN 11 / CS 7 / DC 6 / RST 5 / BUSY 4,
alternating normal/inverted frames with a seam-straddling circle,
"Typoena", and the build tag. Verified on hardware 2026-07-04.
This commit is contained in:
Julien Calixte
2026-07-04 18:58:42 +02:00
parent d971f36f10
commit 6145d27405
3 changed files with 402 additions and 56 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
firmware/Cargo.toml
View File

@@ -27,6 +27,7 @@ log = "0.4"
esp-idf-svc = { version = "0.52.1", features = ["critical-section", "embassy-time-driver", "embassy-sync"] }
# Remove `generic-queue-8` if you plan to use `embassy-time` WITH `embassy-executor`
embassy-time = { version = "0.5", features = ["generic-queue-8"] }
embedded-graphics = "0.8"
[build-dependencies]
embuild = "0.33"