lswitch Class Reference

#include <switchpp.hpp>

Inheritance diagram for lswitch:

Collaboration diagram for lswitch:

Public Member Functions
	lswitch ()
	lswitch (memory_address_t lswitch_base, memory_address_t lswitch_pin, semaphore *sem, timer_t timer_id, subtimer_t timer_subtimer, uint32_t switch_interrupt, uint32_t interrupt_mask=GPIO_BOTH_EDGES, bool start=false)
virtual void	start (void)
virtual void	stop (void)
virtual uint32_t	ack (void)
void	debounce (void)
uint32_t	end_debounce (void)
uint32_t	sample (void)
Public Member Functions inherited from interruptable
	interruptable ()

Public Attributes
uint32_t	debounced_data

Private Attributes
memory_address_t	base
memory_address_t	pin
semaphore *	sem
timer	tim

Detailed Description

Definition at line 16 of file switchpp.hpp.

Constructor & Destructor Documentation

lswitch::lswitch

(

)

Initialize lswitch.

Definition at line 15 of file switchpp.cpp.

References NULL, and sem.

                 {

    this->sem = NULL;
}

lswitch::lswitch	(	memory_address_t	lswitch_base,
		memory_address_t	lswitch_pin,
		semaphore *	sem,
		timer_t	timer_id,
		subtimer_t	timer_subtimer,
		uint32_t	switch_interrupt,
		uint32_t	interrupt_mask = GPIO_BOTH_EDGES,
		bool	start = false
	)

Definition at line 20 of file switchpp.cpp.

References base, ctlsys::enable_periph(), pin, sem, start(), tim, and ctlsys::timer_timeout_from_subtimer().

                                                                                 {

    base = lswitch_base;
    pin = lswitch_pin;

    ctlsys::enable_periph(base);
    GPIOPinTypeGPIOInput(base, pin);
    GPIODirModeSet(base, pin, GPIO_DIR_MODE_IN);

    if ((base == GPIO_PORTF_BASE) && (pin & GPIO_PIN_0)) {
        HWREG(base + GPIO_O_LOCK) = GPIO_LOCK_KEY;
        HWREG(base + GPIO_O_CR) = 0x01;
        HWREG(base + GPIO_O_LOCK) = 0;

        GPIOPadConfigSet(base, pin, GPIO_STRENGTH_2MA, GPIO_PIN_TYPE_STD_WPU);
    }

    /* other solution: timer scoreboard */
    this->tim = timer(timer_id, timer_subtimer, TIMER_CFG_ONE_SHOT, SysCtlClockGet() / 50,
                      ctlsys::timer_timeout_from_subtimer(timer_subtimer));

    GPIOIntTypeSet(base, pin, switch_interrupt);
    IntEnable(interrupt_mask);

    this->sem = sem;
    *(this->sem) = semaphore();

    if (start) {
        this->start();
    }
}

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Member Function Documentation

uint32_t lswitch::ack ( void  )

virtual

Implements interruptable.

Definition at line 83 of file switchpp.cpp.

References base, and pin.

Referenced by GPIOPortE_Handler().

                      {

    GPIOIntClear(base, pin);
}

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void lswitch::debounce

(

void

)

Call this in the isr of the switch

Definition at line 65 of file switchpp.cpp.

References timer::start(), and tim.

Referenced by GPIOPortE_Handler().

                       {

    tim.start();
}

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uint32_t lswitch::end_debounce

(

void

)

Call this in the isr of the switch's timer

Definition at line 74 of file switchpp.cpp.

References timer::ack(), NULL, semaphore::post(), sample(), sem, and tim.

Referenced by Timer1A_Handler().

                               {

    tim.ack();
    if(NULL != sem) {
        sem->post();
    }
    return sample();
}

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uint32_t lswitch::sample

(

void

)

Return current value of the limit lswitch

Definition at line 88 of file switchpp.cpp.

References base, debounced_data, and pin.

Referenced by end_debounce().

                         {

    return debounced_data = GPIOPinRead(base, pin);
}

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void lswitch::start ( void  )

virtual

Implements interruptable.

Definition at line 54 of file switchpp.cpp.

References base, and pin.

Referenced by lswitch().

                    {

    GPIOIntEnable(base, pin);
}

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void lswitch::stop ( void  )

virtual

Implements interruptable.

Definition at line 59 of file switchpp.cpp.

References base, and pin.

                   {

    GPIOIntDisable(base, pin);
}

Member Data Documentation

memory_address_t lswitch::base

private

Definition at line 18 of file switchpp.hpp.

Referenced by ack(), lswitch(), sample(), start(), and stop().

uint32_t lswitch::debounced_data

Definition at line 40 of file switchpp.hpp.

Referenced by sample(), and switch_responder().

memory_address_t lswitch::pin

private

Definition at line 19 of file switchpp.hpp.

Referenced by ack(), lswitch(), sample(), start(), and stop().

semaphore* lswitch::sem

private

Definition at line 20 of file switchpp.hpp.

Referenced by end_debounce(), and lswitch().

timer lswitch::tim

private

Definition at line 21 of file switchpp.hpp.

Referenced by debounce(), end_debounce(), and lswitch().

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The documentation for this class was generated from the following files:

• board-progs/autonomous-racer/common/switchpp.hpp
• board-progs/autonomous-racer/common/switchpp.cpp