STM32F4 MCU C++ API test.

test_C++.cpp

#include "stm32f4xx_conf.h"
#include "stm32f4_discovery.h"


template<uint32_t GPIO_CLK, intptr_t GPIO_PORT_ADDR> class GPIOPort {
public:
    static GPIOPort& port() {
        static GPIOPort instance;
        return instance;
    };

    GPIO_TypeDef *getAddress() {
        return (GPIO_TypeDef *) GPIO_PORT_ADDR;
    }

private:
    GPIOPort() {
        RCC_AHB1PeriphClockCmd(GPIO_CLK, ENABLE);
    };

    GPIOPort(GPIOPort const&);         // Don't Implement
    void operator = (GPIOPort const&); // Don't implement
};

typedef GPIOPort<RCC_AHB1Periph_GPIOD, (intptr_t) GPIOD> GPIOD_t;

template <uint32_t PIN, typename GPIO_PORT_T> class GPIOPin {
public:
    static GPIOPin& pin() {
        static GPIOPin instance(GPIO_PORT_T::port());
        return instance;
    };

    void switchOn() {
        GPIO_PORT_T::port().getAddress()->BSRRL = PIN;
    }

private:
    GPIOPin(GPIO_PORT_T & port) {
        GPIO_InitTypeDef GPIO_InitStructure;
        GPIO_InitStructure.GPIO_Pin = PIN;
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
        GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
        GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
        GPIO_Init(port.getAddress(), &GPIO_InitStructure);
    };

    GPIOPin(GPIOPin const&);         // Don't Implement
    void operator = (GPIOPin const&); // Don't implement
};

template <class PIN> class SLed {
public :
    static SLed& led() {
        static SLed instance;
        return instance;
    };

    void switchOn(void) {
        PIN::pin().switchOn();
    }

private:
    SLed() {
    };

    SLed(SLed const&);         // Don't Implement
    void operator = (SLed const&); // Don't implement
};

typedef SLed<GPIOPin<LED6_PIN, GPIOD_t> > Led6_t;

int main(void) {
    //enable FPU
    SCB->CPACR |= 0b000000000111100000000000000000000UL;
    Led6_t::led().switchOn();
    while (1);
}