Merge pull request adafruit#226 from jarruda/master

Add splash opt-out.

Author: ladyada

Adafruit_SSD1306.cpp

@@ -495,13 +495,16 @@ bool Adafruit_SSD1306::begin(uint8_t vcs, uint8_t addr, bool reset,
     return false;
 
   clearDisplay();
+
+#ifndef SSD1306_NO_SPLASH
   if (HEIGHT > 32) {
     drawBitmap((WIDTH - splash1_width) / 2, (HEIGHT - splash1_height) / 2,
                splash1_data, splash1_width, splash1_height, 1);
   } else {
     drawBitmap((WIDTH - splash2_width) / 2, (HEIGHT - splash2_height) / 2,
                splash2_data, splash2_width, splash2_height, 1);
   }
+#endif
 
   vccstate = vcs;
 

README.md

@@ -19,6 +19,10 @@ Preferred installation method is to use the Arduino IDE Library Manager. To down
 You will also have to install the **Adafruit GFX library** which provides graphics primitves such as lines, circles, text, etc. This also can be found in the Arduino Library Manager, or you can get the source from https://github.com/adafruit/Adafruit-GFX-Library
 
 ## Changes
+Pull Request:
+   (November 2021) 
+   * Added define `SSD1306_NO_SPLASH` to opt-out of including splash images in `PROGMEM` and drawing to display during `begin`.
+
 Pull Request:
    (September 2019) 
    * new #defines for SSD1306_BLACK, SSD1306_WHITE and SSD1306_INVERSE that match existing #define naming scheme and won't conflict with common color names

scripts/Makefile

@@ -1,9 +1,32 @@
 
 PY=python3
 
+define HEADER
+/**
+ * This file is autogenerated, do not edit.
+ * Run `make` from the scripts directory to produce splash.h
+ *
+ * Splashes will be stored in PROGMEM (flash).
+ * If SSD1306_NO_SPLASH is defined, the splashes are omitted.
+ */
+
+#ifndef SSD1306_NO_SPLASH
+/* clang-format off */
+endef
+
+define FOOTER
+/* clang-format on */
+#endif
+endef
+
+export HEADER
+export FOOTER
+
 splash.h: make_splash.py splash1.png splash2.png
-	${PY} make_splash.py splash1.png splash1 >$@
+	echo "$$HEADER" > $@
+	${PY} make_splash.py splash1.png splash1 >>$@
 	${PY} make_splash.py splash2.png splash2 >>$@
+	echo "$$FOOTER" >> $@
 
 clean:
 	rm -f splash.h