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Add Seeed reTerminal E1004 panel support - #32

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limengdu wants to merge 6 commits into
bitbank2:mainfrom
limengdu:codex/e1004-t133a01
Open

Add Seeed reTerminal E1004 panel support#32
limengdu wants to merge 6 commits into
bitbank2:mainfrom
limengdu:codex/e1004-t133a01

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@limengdu

@limengdu limengdu commented Jun 16, 2026

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Summary

  • Add T133A01 13.3 inch Spectra6 dual-controller panel support for Seeed reTerminal E1004.
  • Add T133A01 init, dual-CS data streaming, refresh handling, and a longer BUSY timeout for this panel.
  • Add a standalone E1004 PlatformIO diagnostic example with a six-color Spectra6 test pattern.

Validation

  • Built examples/e1004_test with PlatformIO.
  • Uploaded the diagnostic firmware to a Seeed reTerminal E1004 device.
  • Verified black/white rendering and the six-color Spectra6 test pattern on hardware.
  • Verified real refresh timing in the expected multi-second range.

Notes

  • The diagnostic example uses a 5-minute loop delay to avoid unnecessary repeated panel refreshes.

limengdu added 6 commits June 15, 2026 22:39
@limengdu
Add T133A01 13.3" dual-chip Spectra6 panel (Seeed reTerminal E1004)
46aa9c1 
New panel EP133A_SPECTRA_1200x1600 (1200x1600, BBEP_SPLIT_BUFFER | BBEP_7COLOR)
with its own init sequence and a BBEP_T133A01 flag for the controller's
quirks: a CCSET (0xE0,0x01) before each data frame and a PON/DRF(0x01)/POF
refresh on both controllers. initIO now records the primary CS as controller
bitbank2#1 so dual-CS setup works regardless of setCS2() call order.
@limengdu
Add standalone E1004 (T133A01) panel test example
1dd77a2 
PlatformIO sketch that brings up the EP133A_SPECTRA_1200x1600 panel manually
(power enable + setCS2 + initIO) and draws full-width colour bands plus a
seam-crossing box to verify the dual-chip stitching, colours and refresh.
@limengdu
Stop tracking build artifacts in e1004_test example
8723955 
Add a .gitignore for the example's .pio/ build directory and remove the
accidentally-committed build output.
@limengdu
feat: add E1004 T133A01 panel support
b8ceeff
@limengdu
refactor: isolate E1004 IO stream writes
0b5eff4
@limengdu
test: add E1004 color diagnostic pattern
95fd94a
@limengdu limengdu mentioned this pull request Jun 16, 2026
Closed
@jonasniesner jonasniesner mentioned this pull request Jun 20, 2026
Closed
@TehesFR

TehesFR commented Jul 9, 2026

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Hi @bitbank2 👋
Can this be merged ? When is it planned ? Thanks a lot

@jonasniesner

jonasniesner commented Jul 10, 2026

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I also would appreciate if this PR could be looked t because it blocks me from using this Screen in OpenDisplay without having to fork bb_epaper. Since it is also similar to #31 it would also be important how the CS2 pin should be handled going forward.

TehesFR added a commit to TehesFR/Firmware that referenced this pull request Jul 15, 2026
@TehesFR
feat: add Seeed reTerminal E1004 (13.3" T133A01 Spectra 6) support
4288358 
Adds an esp32-s3-E1004 env and runtime support for the dual-controller
T133A01/EL133UF1 1200x1600 Spectra 6 panel (panel_ic_type 0x0042).

The panel is driven through bb_epaper's EP133A_SPECTRA_1200x1600 (pinned
to the bitbank2/bb_epaper#32 commit until it is merged upstream). Full
frames are collected in a 937.5 KB 4bpp PSRAM framebuffer and sent with
bbepWritePlane(), which splits the frame across the two chip selects;
the row-streaming write paths cannot address the second controller.
CS2 comes from the display block's spare cs_pin_2 field (default GPIO2)
and is parked/driven with the other panel lines across power state
changes. All E1004-specific code is gated on the BBEP_T133A01 define,
so envs building against upstream bb_epaper are unchanged.
TehesFR added a commit to TehesFR/Firmware that referenced this pull request Jul 15, 2026
@TehesFR
feat: add Seeed reTerminal E1004 (13.3" T133A01 Spectra 6) support
02c0bba 
Adds an esp32-s3-E1004 env and runtime support for the dual-controller
T133A01/EL133UF1 1200x1600 Spectra 6 panel (panel_ic_type 0x0042).

The panel is driven through bb_epaper's EP133A_SPECTRA_1200x1600 (pinned
to the bitbank2/bb_epaper#32 commit until it is merged upstream). Full
frames are collected in a 937.5 KB 4bpp PSRAM framebuffer and sent with
bbepWritePlane(), which splits the frame across the two chip selects;
the row-streaming write paths cannot address the second controller.
CS2 comes from the display block's spare cs_pin_2 field (default GPIO2)
and is parked/driven with the other panel lines across power state
changes. All E1004-specific code is gated on the BBEP_T133A01 define,
so envs building against upstream bb_epaper are unchanged.
TehesFR added a commit to TehesFR/Firmware that referenced this pull request Jul 15, 2026
@TehesFR
feat: add Seeed reTerminal E1004 (13.3" T133A01 Spectra 6) support
2f865a0 
Adds an esp32-s3-E1004 env and runtime support for the dual-controller
T133A01/EL133UF1 1200x1600 Spectra 6 panel (panel_ic_type 0x0042).

The panel is driven through bb_epaper's EP133A_SPECTRA_1200x1600 (pinned
to the bitbank2/bb_epaper#32 commit until it is merged upstream). Full
frames are collected in a 937.5 KB 4bpp PSRAM framebuffer and sent with
bbepWritePlane(), which splits the frame across the two chip selects;
the row-streaming write paths cannot address the second controller.
CS2 comes from the display block's spare cs_pin_2 field (default GPIO2)
and is parked/driven with the other panel lines across power state
changes. All E1004-specific code is gated on the BBEP_T133A01 define,
so envs building against upstream bb_epaper are unchanged.
@TehesFR TehesFR mentioned this pull request Jul 15, 2026
Closed
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3 participants

@limengdu @TehesFR @jonasniesner