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[epaper_spi] Add UC8179 BWR support #6295

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[epaper_spi] Add UC8179 BWR support #6295

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55dbe64
Add docs for new support
mutilator Mar 17, 2026
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add links
mutilator Mar 17, 2026
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Merge branch 'next' into uc8179-bwr
mutilator Mar 17, 2026
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mutilator Mar 19, 2026
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5 changes: 5 additions & 0 deletions src/content/docs/components/display/epaper_spi.mdx
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Expand Up @@ -34,6 +34,7 @@ pins and dimensions specified.
| JD79660 | Jadard | [https://www.tdytech.com/en/](https://www.tdytech.com/en/) (B2B, see vendors instead) |
| Spectra-E6 | Eink | [https://www.eink.com/brand/detail/Spectra6](https://www.eink.com/brand/detail/Spectra6) |
| SSD1677 | Solomon | [https://www.solomon-systech.com/product/ssd1677/](https://www.solomon-systech.com/product/ssd1677/) |
| UC8179 | UltraChip | [UC8179 tri-color (Black/White/Red) e-paper controller](https://www.buydisplay.com/download/ic/UC8179.pdf) |

## Supported display panels

Expand All @@ -49,6 +50,7 @@ the pins used to interface to the display to be specified.
| WeAct-2.13in-3c | WeAct | 2.13" 3-color e-paper (250x122, SSD1683) |
| WeAct-2.9in-3c | WeAct | 2.9" 3-color e-paper (128x296, SSD1683) |
| WeAct-4.2in-3c | WeAct | 4.2" 3-color e-paper (400x300, SSD1683) |
| 7.5in-bv3-bwr-xsrupb | Various | 7.5" V3 BWR tri-color (800x480), UC8179 controller - FPC-8612, DEPG0750RWF86BF30, XSRUPB-2025 |

## Supported integrated display boards

Expand Down Expand Up @@ -90,6 +92,9 @@ but can be overridden if needed.
- **mirror_y** (**Required**, boolean): If true, mirror the y axis.

- **reset_duration** (*Optional*, [Time](/guides/configuration-types#time)): Duration for the display reset operation. Defaults to `200ms`.
- **invert_red** (*Optional*, boolean): Invert the red color plane. Some BWR e-paper panels with OTP waveforms use
inverted red encoding (0 = red, 1 = no red). Only available for models that support it (e.g. `7.5in-bv3-bwr-xsrupb`).
Defaults to `true` for the `7.5in-bv3-bwr-xsrupb` model.
- **lambda** (*Optional*, [lambda](/automations/templates#config-lambda)): The lambda to use for rendering the content on the display.
See [Display Rendering Engine](/components/display#display-engine) for more information.
- **pages** (*Optional*, list): Show pages instead of a single lambda. See [Display Pages](/components/display#display-pages).
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