PCA9555
Dependents: Telliskivi2_2014 PowerManagementBoard_Rev_A_2017
PCA9555.h@6:0373a167d58b, 2013-09-16 (annotated)
- Committer:
- Reiko
- Date:
- Mon Sep 16 16:11:32 2013 +0000
- Revision:
- 6:0373a167d58b
- Parent:
- 5:73884f49ed97
- Parent:
- 4:fe1637c9409f
- Child:
- 7:3b54389686ca
Merge
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 | 0:011622696878 | 5 | |
Reiko | 0:011622696878 | 6 | /** Interface to the PCA9555 I2C 16 Bit IO expander */ |
Reiko | 0:011622696878 | 7 | class PCA9555 { |
Reiko | 2:fae93e0841f6 | 8 | protected: |
Reiko | 2:fae93e0841f6 | 9 | InterruptIn _irqpin; |
Reiko | 2:fae93e0841f6 | 10 | FunctionPointer _callbackChange; |
Reiko | 0:011622696878 | 11 | public: |
Reiko | 0:011622696878 | 12 | /** Create an instance of the PCA9555 connected to specfied I2C pins, with the specified address. |
Reiko | 0:011622696878 | 13 | * |
Reiko | 0:011622696878 | 14 | * @param sda The I2C data pin |
Reiko | 0:011622696878 | 15 | * @param scl The I2C clock pin |
mlaane | 4:fe1637c9409f | 16 | * @param interruptPin The pin connected to PCA9555 interrupt |
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 | |
mlaane | 4:fe1637c9409f | 21 | /** Read the IO pin levels |
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 | |
mlaane | 4:fe1637c9409f | 33 | /** Set one pin |
mlaane | 4:fe1637c9409f | 34 | * |
mlaane | 4:fe1637c9409f | 35 | * @param pinNumber The number of pin to set |
mlaane | 4:fe1637c9409f | 36 | */ |
Reiko | 1:a6699cd826bb | 37 | void setPin(unsigned int pinNumber); |
mlaane | 4:fe1637c9409f | 38 | |
mlaane | 4:fe1637c9409f | 39 | /** Clear one pin |
mlaane | 4:fe1637c9409f | 40 | * |
mlaane | 4:fe1637c9409f | 41 | * @param pinNumber The number of pin to clear |
mlaane | 4:fe1637c9409f | 42 | */ |
Reiko | 1:a6699cd826bb | 43 | void clearPin(unsigned int pinNumber); |
mlaane | 4:fe1637c9409f | 44 | |
mlaane | 4:fe1637c9409f | 45 | /** Toggle one pin |
mlaane | 4:fe1637c9409f | 46 | * |
mlaane | 4:fe1637c9409f | 47 | * @param pinNumber The number of pin to toggle |
mlaane | 4:fe1637c9409f | 48 | */ |
Reiko | 1:a6699cd826bb | 49 | void togglePin(unsigned int pinNumber); |
mlaane | 4:fe1637c9409f | 50 | |
mlaane | 4:fe1637c9409f | 51 | /** Get state of pin |
mlaane | 4:fe1637c9409f | 52 | * |
mlaane | 4:fe1637c9409f | 53 | * @param pinNumber The number of pin |
mlaane | 4:fe1637c9409f | 54 | */ |
Reiko | 2:fae93e0841f6 | 55 | bool getPin(unsigned int pinNumber); |
Reiko | 5:73884f49ed97 | 56 | void writePins(); |
Reiko | 1:a6699cd826bb | 57 | |
mlaane | 4:fe1637c9409f | 58 | /** Set direction of pin |
mlaane | 4:fe1637c9409f | 59 | * |
mlaane | 4:fe1637c9409f | 60 | * @param pinNumber The number of pin to set |
mlaane | 4:fe1637c9409f | 61 | */ |
Reiko | 1:a6699cd826bb | 62 | void setDirection(int data); |
Reiko | 2:fae93e0841f6 | 63 | |
Reiko | 2:fae93e0841f6 | 64 | void change(void (*function)(void)); |
Reiko | 2:fae93e0841f6 | 65 | |
Reiko | 2:fae93e0841f6 | 66 | template<typename T> |
Reiko | 2:fae93e0841f6 | 67 | void change(T *object, void (T::*member)(void)) { |
Reiko | 2:fae93e0841f6 | 68 | _callbackChange.attach(object, member); |
Reiko | 2:fae93e0841f6 | 69 | } |
Reiko | 0:011622696878 | 70 | |
Reiko | 0:011622696878 | 71 | private: |
Reiko | 0:011622696878 | 72 | I2C _i2c; |
Reiko | 0:011622696878 | 73 | int _address; |
Reiko | 2:fae93e0841f6 | 74 | unsigned int currentWriteState; |
Reiko | 2:fae93e0841f6 | 75 | |
Reiko | 2:fae93e0841f6 | 76 | void callChange(void); |
Reiko | 0:011622696878 | 77 | }; |
Reiko | 0:011622696878 | 78 | |
Reiko | 0:011622696878 | 79 | #endif |