/**
* Read state of discretes.
*
* @param InstancePtr is a pointer to an XGpio instance to be worked on.
*
* @return Current copy of the discretes register.
*
* @note
*
* None
*
*****************************************************************************/
u32
XGpio_DiscreteRead(XGpio * InstancePtr)
{
u32 temp;
XASSERT_NONVOID(InstancePtr != NULL);
XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
temp = XGpio_mReadReg(InstancePtr->BaseAddress, XGPIO_DATA_OFFSET);
return (XGpio_mReadReg(InstancePtr->BaseAddress, XGPIO_DATA_OFFSET));
}
/**
* Read state of discretes for the specified GPIO channnel.
*
* @param InstancePtr is a pointer to an XGpio instance to be worked on.
* @param Channel contains the channel of the GPIO (1 or 2) to operate on.
*
* @return Current copy of the discretes register.
*
* @note
*
* The hardware must be built for dual channels if this function is used
* with any channel other than 1. If it is not, this function will assert.
*
*****************************************************************************/
Xuint32 XGpio_DiscreteRead(XGpio *InstancePtr, unsigned Channel)
{
XASSERT_NONVOID(InstancePtr != XNULL);
XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
XASSERT_NONVOID((Channel == 1) ||
((Channel == 2) &&
(InstancePtr->IsDual == XTRUE)));
return XGpio_mReadReg(InstancePtr->BaseAddress,
((Channel - 1) * XGPIO_CHAN_OFFSET) +
XGPIO_DATA_OFFSET);
}
