Exemplos de __LDREXH em C++ (Cpp)

Exemplo n.º 1

uint16_t core_util_atomic_decr_u16(uint16_t *valuePtr, uint16_t delta)
{
    uint16_t newValue;
    do {
        newValue = __LDREXH((volatile uint16_t*)valuePtr) - delta;
    } while (__STREXH(newValue, (volatile uint16_t*)valuePtr));
    return newValue;
}

Exemplo n.º 2

Arquivo: mbed_critical.c Projeto: hasnainvirk/mbed-os

uint16_t core_util_atomic_incr_u16(volatile uint16_t *valuePtr, uint16_t delta)
{
    uint16_t newValue;
    do {
        newValue = __LDREXH(valuePtr) + delta;
    } while (__STREXH(newValue, valuePtr));
    return newValue;
}

Exemplo n.º 3

bool core_util_atomic_cas_u16(uint16_t *ptr, uint16_t *expectedCurrentValue, uint16_t desiredValue)
{
    uint16_t currentValue = __LDREXH((volatile uint16_t*)ptr);
    if (currentValue != *expectedCurrentValue) {
        *expectedCurrentValue = currentValue;
        __CLREX();
        return false;
    }

    return !__STREXH(desiredValue, (volatile uint16_t*)ptr);
}

Exemplo n.º 4

Arquivo: atomic_ops.cpp Projeto: krassius/hackathon

bool atomic_cas<uint16_t>(uint16_t *ptr, uint16_t *expectedCurrentValue, uint16_t desiredValue)
{
    uint16_t currentValue = __LDREXH(ptr);
    if (currentValue != *expectedCurrentValue) {
        *expectedCurrentValue = currentValue;
        __CLREX();
        return false;
    }

    return !__STREXH(desiredValue, ptr);
}

Exemplo n.º 5

Arquivo: mbed_critical.c Projeto: hasnainvirk/mbed-os

bool core_util_atomic_cas_u16(volatile uint16_t *ptr, uint16_t *expectedCurrentValue, uint16_t desiredValue)
{
    do {
        uint16_t currentValue = __LDREXH(ptr);
        if (currentValue != *expectedCurrentValue) {
            *expectedCurrentValue = currentValue;
            __CLREX();
            return false;
        }
    } while (__STREXH(desiredValue, ptr));
    return true;
}

Exemplo n.º 6

Arquivo: fifo.c Projeto: 2thetop/anypixel

inline bool FIFO_write(FIFO_Data_TypeDef *inStruct, uint8_t inByte) {
    uint16_t workFree;
	if(inStruct->free <= 0) {
		inStruct->overrun++;
		return false;
	}

    inStruct->buffer[inStruct->head++] = inByte;
    if(inStruct->head >= inStruct->size)
        inStruct->head = 0;

    do {
        workFree = __LDREXH(&inStruct->free);
        workFree -= 1;
    } while( __STREXH(workFree, &inStruct->free));


	return true;
}

Exemplo n.º 7

Arquivo: fifo.c Projeto: 2thetop/anypixel

bool FIFO_read(FIFO_Data_TypeDef *inStruct, uint8_t *outByte, uint16_t count) {
	int i;
	uint16_t workFree;

	if( count > (inStruct->size - inStruct->free) )
		return false;

	for(i = 0; i < count; i++) {
		outByte[i] = inStruct->buffer[inStruct->tail++];
		if(inStruct->tail >= inStruct->size) {
			inStruct->tail = 0;
		}
	}
    do {
        workFree = __LDREXH(&inStruct->free);
        workFree += count;
    } while( __STREXH(workFree, &inStruct->free));

	return true;
}

Exemplo n.º 8

Arquivo: fifo.c Projeto: 2thetop/anypixel

bool FIFO_write_bytes(FIFO_Data_TypeDef *inStruct, uint8_t *inBytes, uint16_t count) {
	int i;
	uint16_t workFree;

	if(inStruct->free < count) {
		inStruct->overrun++;
		return false;
	}

    for(i = 0; i < count; i++) {
        inStruct->buffer[inStruct->head++] = inBytes[i];
        if(inStruct->head >= inStruct->size)
            inStruct->head = 0;
    }
    do {
        workFree = __LDREXH(&inStruct->free);
        workFree -= count;
    } while( __STREXH(workFree, &inStruct->free));

	return true;
}