I'm trying to compile this C++ code using the Arduino 1.0.5-r2 IDE
#include <cstdint>
#include "mcal_reg.h"
class led
{
public:
// Use convenient class-specific typedefs.
typedef std::uint8_t port_type;
typedef std::uint8_t bval_type;
// The led class constructor.
led(const port_type p,
const bval_type b) : port(p),
bval(b)
{
// Set the port pin to low.
*reinterpret_cast<volatile bval_type*>(port)
&= static_cast<bval_type>(~bval);
// Set the port pin to output.
*reinterpret_cast<volatile bval_type*>(port - 1U)
|= bval;
}
void toggle() const
{
// Toggle the LED via direct memory access.
*reinterpret_cast<volatile bval_type*>(port)
^= bval;
}
private:
// Private member variables of the class.
const port_type port;
const bval_type bval;
};
namespace
{
// Create led_b5 on portb.5.
const led led_b5
{
mcal::reg::portb,
mcal::reg::bval5
};
}
int main()
{
// Toggle led_b5 in a loop forever.
for(;;)
{
led_b5.toggle();
}
And the include file mcal_reg.h is this:
#ifndef _MCAL_REG_2011_11_04_H_
#define _MCAL_REG_2011_11_04_H_
#include <cstdint>
namespace mcal
{
namespace reg
{
constexpr std::uint8_t portb = 0x25U;
constexpr std::uint8_t bval0 = 0x01U;
constexpr std::uint8_t bval1 = 0x01U << 1U;
constexpr std::uint8_t bval2 = 0x01U << 2U;
constexpr std::uint8_t bval3 = 0x01U << 3U;
constexpr std::uint8_t bval4 = 0x01U << 4U;
constexpr std::uint8_t bval5 = 0x01U << 5U;
constexpr std::uint8_t bval6 = 0x01U << 6U;
constexpr std::uint8_t bval7 = 0x01U << 7U;
}
}
#endif // _MCAL_REGISTERS_2011_11_04_H_
}
Trying to compile results in the following compilation error:
mcal_reg.h:17: error: 'constexpr' does not name a type
referring to this line: constexpr std::uint8_t portb = 0x25U;
I have setup a mcal_reg directory in my libraries folder which contains the mcal_reg.h file. This is my first Arduino project and I'm writing a program to be flashed to a standalone AVR chip. But I can't compile this program. My systems is Windows 7. and I only have the software that came with the Arduino IDE installed. (No separate GNU, Ms Visual Studio...etc) Please help.
