🌴 Sync 2026-03-05 23:51:42

ssd1306/Makefile

@@ -0,0 +1,41 @@
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=ssd1306
+PKG_RELEASE:=1
+
+PKG_SOURCE_DATE:=2024-10-11
+PKG_SOURCE_VERSION:=7ea348e41accda62c9d5febb74812ac90e5e44cf
+PKG_SOURCE:=ssd1306_linux-$(PKG_SOURCE_DATE).tar.gz
+PKG_SOURCE_URL:=https://codeload.github.com/armlabs/ssd1306_linux/tar.gz/$(PKG_SOURCE_VERSION)?
+PKG_HASH:=skip
+
+PKG_MAINTAINER:=jjm2473 <jjm2473@gmail.com>
+PKG_LICENSE:=MIT
+PKG_LICENSE_FILES:=LICENSE
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/ssd1306
+  SECTION:=utils
+  CATEGORY:=Utilities
+  TITLE:=SSD1306 OLED I2C Driver
+  URL:=https://github.com/armlabs/ssd1306_linux
+endef
+
+define Package/ssd1306/description
+ SSD1306 oled I2C driver working in linux
+endef
+
+TAR_OPTIONS:=--strip-components 1 $(TAR_OPTIONS)
+TAR_CMD=$(HOST_TAR) -C $(1) $(TAR_OPTIONS)
+
+define Package/ssd1306/install
+	$(INSTALL_DIR) $(1)/usr/bin
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/ssd1306 $(1)/usr/bin
+endef
+
+# Set variables used in the source's Makefile
+MAKE_FLAGS+= BIN="ssd1306" LDFLAGS=""
+
+$(eval $(call BuildPackage,ssd1306))

ssd1306/test.sh

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+#!/bin/sh
+set -e
+I2C=$1
+[ -z "$I2C" ] && exit 1
+
+ROTATE=180
+# clear display every round for broken displays
+CLEAR=false
+
+LINELEN=21 # 128/6
+MAX=42 # 2 lines
+TEXT="Hello world!"
+
+
+len=`echo "$TEXT" | wc -c`
+if [ $len -gt $MAX ]; then
+	echo "Text too long (max $MAX chars)" >&2
+	exit 1
+fi
+fillround=$(( ($MAX + $len) / $len )). 
+offset=0
+
+ssd1306 -n $I2C -I 128x32
+# rotate display
+ssd1306 -n $I2C -r $ROTATE
+if $CLEAR; then
+	sleep 1
+else
+	ssd1306 -n $I2C -c
+fi
+while :; do
+	halfstart=$(($offset + $LINELEN))
+	text=""
+	for i in $(seq 0 $fillround); do
+		text="$text ${TEXT}"
+	done
+	$CLEAR && ssd1306 -n $I2C -c
+	msg="`date '+%Y-%m-%d %H:%M:%S'`"'  \n'"${text:$offset:$LINELEN}"'\n'"${text:$halfstart:$LINELEN}"'\n'"`date '+%Y-%m-%d %H:%M:%S'`  "
+	ssd1306 -n $I2C -m "$msg"
+	sleep 1
+	offset=$(( ($offset + 1) % $len ))
+done
+exit 0