PCA9555
Dependents: Telliskivi2_2014 PowerManagementBoard_Rev_A_2017
PCA9555.h@2:fae93e0841f6, 2013-09-09 (annotated)
- Committer:
- Reiko
- Date:
- Mon Sep 09 17:30:51 2013 +0000
- Revision:
- 2:fae93e0841f6
- Parent:
- 1:a6699cd826bb
- Child:
- 4:fe1637c9409f
- Child:
- 5:73884f49ed97
Added interrupt handling
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Reiko | 0:011622696878 | 1 | #ifndef MBED_PCA9555_H |
Reiko | 0:011622696878 | 2 | #define MBED_PCA9555_H |
Reiko | 2:fae93e0841f6 | 3 | |
Reiko | 2:fae93e0841f6 | 4 | #include "mbed.h" |
Reiko | 2:fae93e0841f6 | 5 | //#include "PinDetect.h" |
Reiko | 0:011622696878 | 6 | |
Reiko | 0:011622696878 | 7 | /** Interface to the PCA9555 I2C 16 Bit IO expander */ |
Reiko | 0:011622696878 | 8 | class PCA9555 { |
Reiko | 2:fae93e0841f6 | 9 | protected: |
Reiko | 2:fae93e0841f6 | 10 | InterruptIn _irqpin; |
Reiko | 2:fae93e0841f6 | 11 | FunctionPointer _callbackChange; |
Reiko | 0:011622696878 | 12 | public: |
Reiko | 0:011622696878 | 13 | /** Create an instance of the PCA9555 connected to specfied I2C pins, with the specified address. |
Reiko | 0:011622696878 | 14 | * |
Reiko | 0:011622696878 | 15 | * @param sda The I2C data pin |
Reiko | 0:011622696878 | 16 | * @param scl The I2C clock pin |
Reiko | 0:011622696878 | 17 | * @param address The I2C address for this PCA9555 |
Reiko | 0:011622696878 | 18 | */ |
Reiko | 2:fae93e0841f6 | 19 | PCA9555(PinName sda, PinName scl, PinName interrupPin, int address); |
Reiko | 0:011622696878 | 20 | |
Reiko | 0:011622696878 | 21 | /** Read the IO pin level |
Reiko | 0:011622696878 | 22 | * |
Reiko | 0:011622696878 | 23 | * @return The two bytes read |
Reiko | 0:011622696878 | 24 | */ |
Reiko | 0:011622696878 | 25 | int read(); |
Reiko | 0:011622696878 | 26 | |
Reiko | 0:011622696878 | 27 | /** Write to the IO pins |
Reiko | 0:011622696878 | 28 | * |
Reiko | 0:011622696878 | 29 | * @param data The 16 bits to write to the IO port |
Reiko | 0:011622696878 | 30 | */ |
Reiko | 0:011622696878 | 31 | void write(int data); |
Reiko | 1:a6699cd826bb | 32 | |
Reiko | 1:a6699cd826bb | 33 | void setPin(unsigned int pinNumber); |
Reiko | 1:a6699cd826bb | 34 | void clearPin(unsigned int pinNumber); |
Reiko | 1:a6699cd826bb | 35 | void togglePin(unsigned int pinNumber); |
Reiko | 2:fae93e0841f6 | 36 | bool getPin(unsigned int pinNumber); |
Reiko | 1:a6699cd826bb | 37 | |
Reiko | 1:a6699cd826bb | 38 | void setDirection(int data); |
Reiko | 2:fae93e0841f6 | 39 | |
Reiko | 2:fae93e0841f6 | 40 | void change(void (*function)(void)); |
Reiko | 2:fae93e0841f6 | 41 | |
Reiko | 2:fae93e0841f6 | 42 | template<typename T> |
Reiko | 2:fae93e0841f6 | 43 | void change(T *object, void (T::*member)(void)) { |
Reiko | 2:fae93e0841f6 | 44 | _callbackChange.attach(object, member); |
Reiko | 2:fae93e0841f6 | 45 | } |
Reiko | 0:011622696878 | 46 | |
Reiko | 0:011622696878 | 47 | private: |
Reiko | 0:011622696878 | 48 | I2C _i2c; |
Reiko | 0:011622696878 | 49 | int _address; |
Reiko | 2:fae93e0841f6 | 50 | unsigned int currentWriteState; |
Reiko | 2:fae93e0841f6 | 51 | |
Reiko | 2:fae93e0841f6 | 52 | void callChange(void); |
Reiko | 0:011622696878 | 53 | }; |
Reiko | 0:011622696878 | 54 | |
Reiko | 0:011622696878 | 55 | #endif |