/**
* Unreserve the interrupt from FPGA and disable timer IRQ IO.
*
* @param[in] irqChannel A structure containing the registers and settings
* for timer IRQ IO to modify.
* @param[in] irqContext IRQ context under which you unreserve the IRQ.
* @return the configuration status.
*/
int32_t Irq_UnregisterTimerIrq(MyRio_IrqTimer* irqChannel,
NiFpga_IrqContext irqContext)
{
int32_t status;
/*
* Check if the specified IRQ resource is registered.
*/
status = Irq_CheckReserved(irqChannel->timerChannel, TIMERIRQNO);
if (status == NiMyrio_Status_Success)
{
/*
* Did not find the resource in the list.
*/
printf("You didn't register an interrupt with this IRQ number.\n");
return NiMyrio_Status_Success;
}
/*
* Write the value to the IRQTIMERSETTIME register.
*/
status = NiFpga_WriteU32(myrio_session, irqChannel->timerWrite, 0);
status = NiFpga_WriteBool(myrio_session, irqChannel->timerSet, NiFpga_True);
/*
* Check if there was an error writing to the IRQTIMERSETTIME register.
*
* If there was an error then print an error message to stdout and return configuration status.
*/
MyRio_ReturnStatusIfNotSuccess(status,
"Could not write to IRQTIMERSETTIME register!")
/*
* Delete the reserved resource in the list.
*/
status = Irq_RemoveReserved(TIMERIRQNO);
/*
* Check if there was an error releasing the resource from list.
*
* If there was an error then print an error message to stdout.
*/
MyRio_ReturnStatusIfNotSuccess(status,
"Could not release the irq resource!")
/*
* Unreserve an IRQ context obtained from Irq_ReserveIrqContext.
* The returned NiFpga_Status value is stored for error checking.
*/
status = NiFpga_UnreserveIrqContext(myrio_session, irqContext);
/*
* Check if there was an error when unreserve an IRQ.
*
* If there was an error then print an error message to stdout and return configuration status.
*/
MyRio_ReturnStatusIfNotSuccess(status,
"A required NiFpga_IrqContext was not unreserved.")
return NiMyrio_Status_Success;
}
/**
* Unreserve the interrupt from FPGA, and disable the particular digital IRQ IO,
* clear according channel value and IRQ number in the resource list.
* So the IO can be configured in the next time.
*
* @param[in] irqChannel A struct containing the registers and settings
* for a particular analog IRQ IO to modify.
* @param[in] irqContext IRQ context with to unreserve.
* @return the configuration status.
*/
int32_t Irq_UnregisterDiIrq(MyRio_IrqDi* irqChannel,
NiFpga_IrqContext irqContext,
uint8_t irqNumber)
{
int32_t status;
uint8_t cnfgValue;
/*
* Limit the IRQ number within a range,
* if the entered value is out of range, print an error message.
*/
if (irqNumber > IRQNO_MAX || irqNumber < IRQNO_MIN)
{
printf("The specified IRQ Number is out of range.\n");
return NiMyrio_Status_IrqNumberNotUsable;
}
/*
* Check if the specified IRQ resource is registered.
*/
status = Irq_CheckReserved(irqChannel->dioChannel, irqNumber);
if (status == NiMyrio_Status_Success)
{
/*
* Did not find the resource in the list
*/
printf("You didn't register an interrupt with this IRQ number.\n");
return NiMyrio_Status_Success;
}
/*
* Get the current value of the DI configure register.
*/
status = NiFpga_ReadU8(myrio_session, irqChannel->dioIrqEnable, &cnfgValue);
/*
* Check if there was an error reading from the DI configure register.
*
* If there was an error then print an error message to stdout and return configuration status.
*/
MyRio_ReturnStatusIfNotSuccess(status,
"Could not read from the DI configure register!")
/*
* Disable the specified channel.
*/
if (irqChannel->dioChannel == Irq_Dio_A0)
{
/*
* Clear the value of the masked bits in the DI configure register. This is
* done so DI0 is disabled.
*/
cnfgValue = cnfgValue & (~Irq_Dio_A0_Enable);
}
else if (irqChannel->dioChannel == Irq_Dio_A1)
{
/*
* Clear the value of the masked bits in the DI configure register. This is
* done so DI1 is disabled.
*/
cnfgValue = cnfgValue & (~Irq_Dio_A1_Enable);
}
else if (irqChannel->dioChannel == Irq_Dio_A2)
{
/*
* Clear the value of the masked bits in the DI configure register. This is
* done so DI2 is disabled.
*/
cnfgValue = cnfgValue & (~Irq_Dio_A2_Enable);
}
else if (irqChannel->dioChannel == Irq_Dio_A3)
{
/*
* Clear the value of the masked bits in the DI configure register. This is
* done so DI3 is disabled.
*/
cnfgValue = cnfgValue & (~Irq_Dio_A3_Enable);
}
/*
* Write the new value of the DI configure register to the device.
*/
status = NiFpga_WriteU8(myrio_session, irqChannel->dioIrqEnable, cnfgValue);
/*
* Check if there was an error writing to DI configure register.
*
* If there was an error then print an error message to stdout and return configuration status.
*/
MyRio_ReturnStatusIfNotSuccess(status,
"Could not write to the AI configure register!")
/*
* Remove the reserved resource in the list.
*/
status = Irq_RemoveReserved(irqNumber);
/*
* Check if there was an error releasing the resource from list.
*
* If there was an error then print an error message to stdout.
*/
MyRio_ReturnStatusIfNotSuccess(status,
"Could not release the irq resource!");
/*
* Unreserve an IRQ context obtained from Irq_ReserveIrqContext.
* The returned NiFpga_Status value is stored for error checking.
*/
status = NiFpga_UnreserveIrqContext(myrio_session, irqContext);
/*
* Check if there was an error when unreserve an IRQ.
*
* If there was an error then print an error message to stdout and return configuration status.
*/
MyRio_ReturnStatusIfNotSuccess(status,
"A required NiFpga_IrqContext was not unreserved.")
return NiMyrio_Status_Success;
}
bool nifpga::UnreserveIrqContext(NiFpga_IrqContext context) {
if (sessionOpen && sessionRunning) return HandleStatus(NiFpga_UnreserveIrqContext(sessionHandle, context));
return false;
}
