[修改] 修改LED标题显示

[详细说明]
    1. 使用系统字体ttf文件：DejaVuSans.ttf;
    2. 调整字体大小：12

Pioneer600/Oled/oled.py

@@ -58,7 +58,9 @@ class OLED(object):
 		image = self.image
 
 		# Load default font.
-		font = ImageFont.load_default()
+#		font = ImageFont.load_default()
+		font_path = "/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf"
+		font = ImageFont.truetype(font_path, size)
 
 		# Write two lines of text.
 		draw.text((x, y), text, font=font, fill=255)

main.py

@@ -42,7 +42,7 @@ def main():
 		led_blink = threading.Thread(target=blink_loop, name='led_blink', args=(LED_GPIO_RED,))
 		led_blink.start()
 
-		oled.draw_text(0, 0, 16, 'Hello, workld')
+		oled.draw_text(0, 0, 14, 'Raspi-SmartHome')
 
 		while True:
 			time.sleep(1)
@@ -53,4 +53,3 @@ def main():
 
 if __name__=='__main__':
     main()
-