Charith Dassanayake
/
CPPToPigpio
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BusOut.h
00001 #ifndef CPP_TO_PIGPIO_BUSOUT_HEADER 00002 #define CPP_TO_PIGPIO_BUSOUT_HEADER 00003 00004 #include <vector> 00005 namespace CPPToPigpio{ 00006 /** 00007 * A BusOut interface is used to create several DigitalOut pins that can be written to using only one value. 00008 */ 00009 00010 class BusOut : public CPPToPigpio{ 00011 private: 00012 std::vector<DigitalOut *> _digitalOuts; 00013 long long _lastWrittenValue; //Track what we last wrote to outputs for read() 00014 public: 00015 00016 /** Create an BusOut, connected to the specified pins 00017 * 00018 * @param p0 DigitalOut pin to connect to bus bit 00019 * @param p1 DigitalOut pin to connect to bus bit 00020 * @param p2 DigitalOut pin to connect to bus bit 00021 * @param p3 DigitalOut pin to connect to bus bit 00022 * @param p4 DigitalOut pin to connect to bus bit 00023 * @param p5 DigitalOut pin to connect to bus bit 00024 * @param p6 DigitalOut pin to connect to bus bit 00025 * @param p7 DigitalOut pin to connect to bus bit 00026 * @param p8 DigitalOut pin to connect to bus bit 00027 * @param p9 DigitalOut pin to connect to bus bit 00028 * @param p10 DigitalOut pin to connect to bus bit 00029 * @param p11 DigitalOut pin to connect to bus bit 00030 * @param p12 DigitalOut pin to connect to bus bit 00031 * @param p13 DigitalOut pin to connect to bus bit 00032 * @param p14 DigitalOut pin to connect to bus bit 00033 * @param p15 DigitalOut pin to connect to bus bit 00034 */ 00035 BusOut (PinName p0, PinName p1=NC, PinName p2=NC, PinName p3=NC, PinName p4=NC, PinName p5=NC, PinName p6=NC, PinName p7=NC, PinName p8=NC, PinName p9=NC, PinName p10=NC, PinName p11=NC, PinName p12=NC, PinName p13=NC, PinName p14=NC, PinName p15=NC); 00036 00037 /** Create an BusOut, connected to the specified pins 00038 * 00039 * @param p0 DigitalOut pin to connect to bus bit 00040 * @param p1 DigitalOut pin to connect to bus bit 00041 * @param p2 DigitalOut pin to connect to bus bit 00042 * @param p3 DigitalOut pin to connect to bus bit 00043 * @param p4 DigitalOut pin to connect to bus bit 00044 * @param p5 DigitalOut pin to connect to bus bit 00045 * @param p6 DigitalOut pin to connect to bus bit 00046 * @param p7 DigitalOut pin to connect to bus bit 00047 * @param p8 DigitalOut pin to connect to bus bit 00048 * @param p9 DigitalOut pin to connect to bus bit 00049 * @param p10 DigitalOut pin to connect to bus bit 00050 * @param p11 DigitalOut pin to connect to bus bit 00051 * @param p12 DigitalOut pin to connect to bus bit 00052 * @param p13 DigitalOut pin to connect to bus bit 00053 * @param p14 DigitalOut pin to connect to bus bit 00054 * @param p15 DigitalOut pin to connect to bus bit 00055 */ 00056 BusOut (int p0, int p1=-1, int p2=-1, int p3=-1, int p4=-1, int p5=-1, int p6=-1, int p7=-1, int p8=-1, int p9=-1, int p10=-1, int p11=-1, int p12=-1, int p13=-1, int p14=-1, int p15=-1); 00057 00058 /** Creates a BusOut, connected to the specific pins. 00059 * 00060 * @param number of pins specified 00061 * @param array of pins to connect to bus 00062 */ 00063 00064 //This is different from standard MBED API. Since the literal 0 is a valid pinName, need busSize to be passed in to tell which pins matter. 00065 BusOut (int busSize, PinName pinNames[16]); 00066 00067 /** Creates a BusOut, connected to the specific pins. 00068 * 00069 * @param number of pins specified 00070 * @param array of pins to connect to bus 00071 */ 00072 00073 //This is different from standard MBED API. Since the literal 0 is a valid pinName, need busSize to be passed in to tell which pins matter. 00074 BusOut (int busSize, int pinNames[16]); 00075 00076 /** Write the value to the output bus 00077 * 00078 * @param value An integer specifying a bit to write for every corresponding DigitalOut pin 00079 */ 00080 void write(int value); 00081 00082 /** Read the value currently output on the bus 00083 * 00084 * @returns An integer with each bit corresponding to associated DigitalOut pin setting 00085 */ 00086 int read(); 00087 00088 /** A shorthand for read() 00089 * \sa BusOut::read() 00090 */ 00091 operator int(); 00092 00093 /** Access to particular bit in random-iterator fashion 00094 * @param index Bit Position 00095 */ 00096 DigitalOut & operator[](int index); 00097 00098 /** A shorthand for write() 00099 * \sa BusOut::write() 00100 */ 00101 BusOut & operator=(int v); //Short for write 00102 00103 /** Binary mask of bus pins connected to actual pins (not NC pins) 00104 * If bus pin is in NC state make corresponding bit will be cleared (set to 0), else bit will be set to 1 00105 * 00106 * @returns Binary mask of connected pins 00107 */ 00108 //Returns mask of connected pins, double check that this matches what it should do. Note that since 0 is valid, mask of BusIn(0) will return 0b000..1 and mask(BusIn(1)) returns 0b000..10 00109 long long mask(); 00110 00111 /** Desconstructor for object 00112 */ 00113 ~BusOut(); 00114 00115 }; 00116 00117 00118 } 00119 00120 #endif
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