[riot-notifications] [RIOT-OS/RIOT] black/white e-Paper/e-Ink display driver (#12509)

Silke Hofstra notifications at github.com
Wed May 19 13:58:12 CEST 2021

@silkeh commented on this pull request.

> +        /* Use full refreshes for the full-size logo */
+        epd_bw_spi_set_partial(dev, false);

Yes, because the `disp_dev` API doesn't cover this fundamental property of e-paper displays.

> better check for the bounds used with the disp_dev map function and call the epd_bw_spi_update_part/epd_bw_spi_update_full accordingly.

The bounds don't necessarily have anything to do with wanting to do a full/partial refresh. The main reason to do a full refresh is to resolve the ghosting, otherwise a partial refresh will always give a better experience (and lower power draw).

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