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  1. #include <avr/io.h>
  2. #include <avr/interrupt.h>
  3.  
  4. #define DEFINE_AVR_PORT(ClassName, PortReg, PinReg, DdrReg) \
  5. struct ClassName { \
  6.     static void setPort (uint8_t x) { PortReg = x; } \
  7.     static uint8_t getPort () { return PortReg; } \
  8.     static void setDdr (uint8_t x) { DdrReg = x; } \
  9.     static uint8_t getDdr () { return DdrReg; } \
  10.     static uint8_t getPin () { return PinReg; } \
  11. };
  12.  
  13. DEFINE_AVR_PORT(AvrPortA, PORTA, PINA, DDRA)
  14. DEFINE_AVR_PORT(AvrPortB, PORTB, PINB, DDRB)
  15. DEFINE_AVR_PORT(AvrPortC, PORTC, PINC, DDRC)
  16. DEFINE_AVR_PORT(AvrPortD, PORTD, PIND, DDRD)
  17.  
  18. template <typename Port, int PortPin>
  19. struct PinInterface {
  20.     void setOutput () const
  21.     {
  22.         Port::setDdr(Port::getDdr() | (1 << PortPin));
  23.     }
  24.  
  25.     void setInput () const
  26.     {
  27.         Port::setDdr(Port::getDdr() & ~(1 << PortPin));
  28.     }
  29.  
  30.     void operator= (bool state) const
  31.     {
  32.         if (state) {
  33.             Port::setPort(Port::getPort() | (1 << PortPin));
  34.         } else {
  35.             Port::setPort(Port::getPort() & ~(1 << PortPin));
  36.         }
  37.     }
  38.  
  39.     operator bool () const
  40.     {
  41.         return (Port::getPin() & (1 << PortPin));
  42.     }
  43. };
  44.  
  45. static PinInterface<AvrPortA, 0> PinA0;
  46. static PinInterface<AvrPortA, 1> PinA1;
  47. // and so on...
  48.  
  49. int main ()
  50. {
  51.     PinA0.setInput();
  52.     PinA0 == true; // seems like operator bool works all right, no need for operator==
  53. }
  54.  
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
prog.cpp:1:20: fatal error: avr/io.h: No such file or directory
compilation terminated.
stdout 
Standard output is empty
https://ideone.com/K5rB9P
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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