examples: add examples/unicode_font3_const

Makefile

@@ -27,7 +27,8 @@ TARGET = build/examples_epd.hex \
 		 build/examples_unicode_font_pyportal.hex \
 		 build/examples_unicode_font_wioterminal.hex \
 		 build/examples_unicode_font2_pyportal.hex \
-		 build/examples_unicode_font2_wioterminal.hex
+		 build/examples_unicode_font2_wioterminal.hex \
+		 build/examples_unicode_font3_const2bit_pyportal.hex
 .PHONY: smoke-test $(TARGET)
 smoke-test: clean $(TARGET)
 
@@ -70,3 +71,7 @@ build/examples_unicode_font2_pyportal.hex:
 build/examples_unicode_font2_wioterminal.hex:
 	$(TINYGO) build -size short -o $@ -target=wioterminal ./examples/unicode_font2
 	@$(MD5SUM) $@
+
+build/examples_unicode_font3_const2bit_pyportal.hex:
+	$(TINYGO) build -size short -o $@ -target=pyportal ./examples/unicode_font3_const2bit
+	@$(MD5SUM) $@

examples/unicode_font3_const2bit/README.md

@@ -0,0 +1,20 @@
+# unicode\_font3\_const
+
+Testing with pyportal.  
+
+```
+$ tinygo build -o app.uf2 -target pyportal -size short ./examples/unicode_font3_const2bit
+```
+
+![](unicode_font3_const2bit.jpg)
+
+The font was created as follows.  
+
+```
+tinyfnotgen-ttf --size 12 --verbose --output ./font.go --string-file ./main.go --package main --fontname Notosans12pt ./NotoSansJP-Regular.otf ./NotoSansKR-Regular.ttf
+```
+
+You can download the original TTF/OTF fonts used with tinyfontgen-ttf from the following link. Please refer to the downloaded file for the license and other details.  
+
+* https://fonts.google.com/noto/specimen/Noto+Sans+JP
+* https://fonts.google.com/noto/specimen/Noto+Sans+KR