twoline 0.7.4

Manager for simple character LCDs

A simple manager for two-line LCD displays.

Specifically, this was created for the Adafruit USB + Serial Backpack Kit with 16x2 RGB backlight negative LCD - RGB on Black, but this should be easily adaptable to many other character LCD displays.

URLS

/: Index

URL Index

• GET: Display all endpoints and acceptable methods.

/brightness/: Brightness

Screen brightness.

• GET: Return brightness.

• PUT: Set brightness.

/contrast/: Contrast

Screen contrast.

• GET: Return contrast.

• PUT: Set contrast.

/flash/: Flash Messages

Short-duration single-time announcements.

• GET: Get the current flash message (if one exists).

• PUT: Set the flash message to a given message object.

• DELETE: Delete the current flash message (if one exists).

/message/: Messages

List or create a message to add to the message rotation.

• GET: Get a list of all current messages.

• POST: Add a new message to the list of messages to cycle through.

/message/<message_id>/: Message Details

Create, delete, or alter an existing message.

• GET: Get an existing message object for a given ID.

• PUT: Replace an existing message object for a given ID.

• PATCH: Update an existing message object for a given ID.

• DELETE: Delete an existing message object for a given ID.

Message Object

{
    'message': 'Until this message disappears, Adam is not yet 30',
    'color': [255, 255, 255], # Optional; set the color
    'blink': [
        [255, 0, 0],
        [0, 0, 0]
    ], # Optional; cycle through these colors
    'expires': '2014-03-02 00:00', # Optional;  The parser -- dateutil --
                                   # is very liberal, but your mileage may
                                   # vary.  If no timezone is specified
                                   # defaults to the local system timezone.
                                   # Can also be an integer number of
                                   # seconds from the current time.
    'interval': 5, # Optional; Only for regular messages;
                   # Number of seconds to display this message before
                   # switching to the next
    'timeout': 300,  # Optional; Only for flash messages;
                     # Number of seconds until message disappears
    'backlight': True,  # Optional; Backlight on or off
}