A menu system is completely necessary for a thermostat of this complexity; options to change backlight colour, configure the time, modify schedule, and others, can only be practically configured through a menu.<\/p>\n
This was the result of an hour or two of work:<\/p>\n
Look past the break to also see a video demo of the menu interface!<\/p>\n <\/p>\n It is kind of empty right now, since it is still in development, but the system is quite simple:<\/p>\n The first menu item I configured was the LED menu, which allows you to change the colour of the backlight.<\/p>\n By default, it is configured for “white”, which is a combination of red, green, and blue light. It looks more blue than white, but it is as close as possible.<\/p>\n The first version of the menu (not pictured) only included white, red, green, and blue, which are the simplest to implement. As soon as this was functional, however, I immediately expanded the list to include all combinations of these colours. This resulted in a total of 7 backlight options.<\/p>\n In addition to creating this menu system, and on the advice of my friend Matt Durr<\/a>, I added a boot screen logo. It appears for a little under two second.<\/p>\n As you can gather in the above image, I have a tentative name for the project, “ConnectedControl”. The name draws attention to the wireless connection, and the additional control available by having computer connectivity.<\/p>\n The LCD display being used is the ST7565 Graphical Negative LCD<\/a> from Adafruit. She includes some libraries to use with this display, which I found included a lot of unnecessary code and needed some work to clean up\/optimize for my project. Also included with these libraries was the bmp2glcd<\/a>\u00a0utility, a command-line tool which will convert a bitmap image file into an array for use with a graphical LCD in an embedded design.<\/p>\n bmp2glcd<\/span><\/p>\n Here is an important comment about bmp2glcd, when used with this LCD display. Unfortunately, it isn’t a convert-copy-paste operation. There are two steps you need to do in order to generate a useful image on the LCD.<\/p>\n Final Remarks<\/span><\/p>\n Plenty of work remains until the firmware is complete. At this point, more menu items need to be added, the ability the change time being my current task.<\/p>\n Other tasks:<\/p>\n I’m pleased with my progress so far, however, and every success keeps me motivated to finish this project!<\/p>\n![\"\"](\"https:\/\/blog.danjoannis.com\/wp-content\/uploads\/2012\/01\/Menu.jpg\" "\\"Menu\\"")
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