当前位置：网站首页>B_ QuRT_ User_ Guide(27)

B_ QuRT_ User_ Guide(27)

2022-06-28 08:08:00 【weixin_ thirty-eight million four hundred and ninety-eight thou】

B_QuRT_User_Guide（27）

17.4 qurt_interrupt_disable()

17.4.1 Function document

17.4.1.1 unsigned int qurt_interrupt_disable ( int int_num )

Disable an interrupt with an interrupt number .
Before calling this function , The interrupt must be registered . stay qurt_interrupt_disable() After the return ,Hexagon The subsystem can no longer move to Hexagon The core sends the corresponding interrupt , Until... Is called for the same interrupt qurt_interrupt_enable().
Avoid frequent calls in a short time qurt_interrupt_disable（） and qurt_interrupt_enable（）.(1) When calling qurt_interrupt_disable() when ,Hexagon There may already be pending interrupts in the kernel . So after a while ,Hexagon A pending interrupt is received on the hardware thread .(2) In an interrupt from Hexagon Subsystem sends to Hexagon After the core ,Hexagon The hardware automatically disables the interrupt , Until the kernel software re enables the interrupt in the interrupt confirmation phase . If qurt_interrupt_enable() Called by some thread earlier , The interrupt will be re enabled in advance , This triggers an interrupt to when the kernel software is still processing the previous interrupt Hexagon The core sends a new interrupt .
Parameters
| | | | |---- | ---- | ---- | | in | timer | Timer object .| | out | attr | Pointer to the target structure of the timer property .|
Return value
QURT_EOK - Interrupt successfully disabled .QURT_EINT - Invalid interrupt number .QURT_EVAL - The interrupt is not closed .
Dependencies
None.

17.5 qurt_interrupt_enable()

17.5.1 Function document

17.5.1.1 unsigned int qurt_interrupt_enable ( int int_num )

Enable an interrupt with an interrupt number .
Before calling this function , The interrupt must be registered first .
Parameters
| | | | |---- | ---- | ---- | | in | group | Timer group identifier .|

Return value
QURT_EOK - Interrupt successfully enabled .QURT_EINT - Invalid interrupt number .QURT_EVAL - Interrupt not registered .

Dependencies
None.

17.6 qurt_interrupt_get_config()

17.6.1 Function document

17.6.1.1 unsigned int qurt_interrupt_get_config ( unsigned int int_num, unsigned int ∗ int_type, unsigned int ∗ int_polarity )

obtain L2VIC Interrupt configuration .
This function returns the specified L2VIC Type and polarity of interrupts .
Parameters
| | | | |---- | ---- | ---- | | in | group | Timer object .|

Return value
QURT_EOK - Configuration succeeded, return .QURT_EINT - Invalid interrupt number .
Dependencies
None.

17.7 qurt_interrupt_raise()

17.7.1 Function document

17.7.1.1 int qurt_interrupt_raise ( unsigned int interrupt_num )

Cause an interruption .
stay V5 Hexagon On the processor , This function will trigger a level trigger L2VIC interrupt , And accept 0 To 1023 Interrupt number in the range .
Parameters
Insert picture description here
Return value
QURT_EOK - success
-1 - Failure ; The interrupt is not supported .
Dependencies
None.

17.8 qurt_interrupt_register()

17.8.1 Function document

17.8.1.1 unsigned int qurt_interrupt_register ( int int_num, qurt_anysignal_t ∗ int_signal, int signal_mask )

Registration interrupted .
Enable the specified interrupt , And compare it with the specified QuRT A signal object is associated with a signal mask .
The signal is 32 The bit mask value is represented as the... Th 0 To 31 position . The mask bit value is 1 Indicates that you must wait for the signal ,0 It means not to wait .
When the interrupt occurs , The signal specified in the signal mask is set in the signal object . Interrupt the service thread （IST） Routinely wait for the signal to process the interrupt . The thread that registers interrupts is set to IST Threads .
A signal object can be registered at most 31 Separate interrupts , This is determined by the number of independent signals that the object can store .QuRT Keep the signal 31. therefore , One IST Can handle several different interrupts .
QuRT Some interrupts are reserved for internal use - The rest of the interrupts are available to the application , Therefore, it is a valid interrupt number . If the specified interrupt number is not within the valid range , The registration operation will return the status value QURT_EINT.
Only one thread can be registered with a particular interrupt at a time . Attempting to register an already registered interrupt will return a status value QURT_EVAL.
In a signal object , Only one signal bit can be registered in a particular interrupt at a time . Trying to register multiple signal bits into an interrupt , The status value will be returned QURT_ESIG.
Once the signal registers an interrupt ,QuRT The signal bit can only be set when an interrupt is received . From other software threads QuRT The signal API The signal cannot be set , Even unused signal bits .
Be careful ： The valid range of interrupt number may be different in the target execution environment outside the simulator . For more information , Refer to the appropriate hardware documentation .
Related data types
qurt_anysignal_t
Parameters
Insert picture description here
Return value
QURT_EOK - Interrupt successful registration .
QURT_EINT - Invalid interrupt number .
QURT_ESIG - Invalid signal bitmask （ Multiple signals cannot be set at the same time ）.QURT_EVAL - Interrupt has been registered .
Dependencies
None.

17.9 qurt_interrupt_set_config()

17.9.1 Function document

17.9.1.1 unsigned int qurt_interrupt_set_config ( unsigned int int_num, unsigned int int_type, unsigned int int_polarity )

Set specified L2VIC Type and polarity of interrupts . Be careful ： In reconfiguration L2VIC Before the interruption , To unregister them .
Parameters
| | | | |---- | ---- | ---- | | in | timer | Timer object .|
Return value
QURT_EOK - success .
QURT_ENOTALLOWED - Don't allow ; Registering interrupts .QURT_EINT - Invalid interrupt number .
Dependencies
None.