mpr121 keypad
*_keypad.py defines one class KEYPAD for user programs. The class has 3 parameters i2c (the i2c bus to use), rq_pin (the requset pin) and address (the i2c device address, this will be 0x5a, 0x5b, 0x5c or 0x5d).
The KEYPAD object is made up of 2 types of object. 12 KEY objects which are accessed via the dictionary KEYPAD.key using the symbol on the keypad as the lookup symbol. And a PROXIMITY object (KEYPAD.keypad).
The PROXIMITY object has 2 user methods
| Method | Type | |
.is_near() | boolean | is a finger near the keypad. |
.was_near() | boolean | has anything been near the keypad since the .was_near() method was last executed. |
| Method | Type | |
.is_pressed() | boolean | returns True if the key is being pressed. |
.was_pressed() | boolean | returns True if the key has been pressed since the last call to the .was_pressed() method. |
.get_presses() | integer | returns the number of times the key has been pressed since the last call to the .get_presses() method. |
Object KEYPAD has no user methods, KEY states and PROXIMITY to the sensor are accessed by methods on the dictionay KEYPAD.key or object KEYPAD.keypad.
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