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Diffstat (limited to 'examples/embedded_ui/Kata.txt')
| -rw-r--r-- | examples/embedded_ui/Kata.txt | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/examples/embedded_ui/Kata.txt b/examples/embedded_ui/Kata.txt new file mode 100644 index 0000000..b466c36 --- /dev/null +++ b/examples/embedded_ui/Kata.txt @@ -0,0 +1,25 @@ + +Problem Definition +------------------ +The task is to write a user interface module for an embedded device. + +Interrupts: + * The user interface is responsible for initializing the display. + * The user interface will register an interrupt handler for GPIO input 2 (a + push button). + * It will be possible to register a callback function for button presses. + * When there is no callback function set the irq handler will increment a + missed irq counter. + * When the interrupt occurs the handler will schedule or execute the button + press callback if there is one registered. +Output: + * Tasks can write messages to the user interface to be output on the display. + * The display is line oriented; when the last line of the display is written + the user interface is responsible for clearing the display. + * The display is 26 characters wide. Any string longer than that must be + truncated before being sent to the display. The string must be null + terminated and thus maximum 27 bytes long. + + * BONUS: Have the display be scrolling, i.e. when the display is full, the + previous lines must be shifted up one and the new line written in the bottom + line. |