[epaper_spi] Add SSD1681 and the Waveshare 1.54in V2 panel (#18073)

esphome/components/epaper_spi/models/ssd1683.py

@@ -26,3 +26,15 @@ goodisplay_gdey042t81 = ssd1683.extend(
     width=400,
     height=300,
 )
+
+# The SSD1681 shares the SSD1683 command set for everything this driver uses:
+# the same 0x01/0x11/0x18 initialisation, the same 0x44/0x45 window and
+# 0x4E/0x4F cursor registers with a byte-addressed X and a 16-bit Y, and the
+# same 0x22/0x20 update. It only differs in the panel sizes it drives.
+ssd1681 = SSD1683("ssd1681")
+
+waveshare_1_54in_v2 = ssd1681.extend(
+    "waveshare-1.54in-v2",
+    width=200,
+    height=200,
+)

tests/components/epaper_spi/test.esp32-s3-idf.yaml

@@ -190,6 +190,24 @@ display:
       allow_other_uses: true
       number: GPIO4
 
+  # Waveshare 1.54" V2 mono e-paper (200x200, SSD1681)
+  - platform: epaper_spi
+    spi_id: spi_bus
+    model: waveshare-1.54in-v2
+    full_update_every: 30
+    cs_pin:
+      allow_other_uses: true
+      number: GPIO5
+    dc_pin:
+      allow_other_uses: true
+      number: GPIO17
+    reset_pin:
+      allow_other_uses: true
+      number: GPIO16
+    busy_pin:
+      allow_other_uses: true
+      number: GPIO4
+
   # Waveshare 2.13" V4 B series 3-color e-paper (122x250, BWR, SSD1680)
   - platform: epaper_spi
     spi_id: spi_bus