Cygdrvisrunlock, Cygdrvspinlockinit, Cyg_drv_isr_unlock – Comtrol eCos User Manual

Page 393: Cyg_drv_spinlock_init, Cyg_drv_spinlock_destroy

Chapter 18. Device Driver Interface to the Kernel

Description:

Disables delivery of interrupts, preventing all ISRs running. This function maintains a counter of the number

of times it is called.

cyg_drv_isr_unlock

Function:

void cyg_drv_isr_unlock()

Arguments:

None

Result:

None

Level:

ISR

Description:

Re-enables delivery of interrupts, allowing ISRs to run. This function decrements the counter maintained by

cyg_drv_isr_lock()

, and only re-allows interrupts when it goes to zero.

cyg_drv_spinlock_init

Function:

void cyg_drv_spinlock_init(cyg_spinlock_t *lock, cyg_bool_t locked )

Arguments:

lock

- pointer to spinlock to initialize

locked

- initial state of lock

Result:

None

Level:

Thread

Description:

Initialize a spinlock. The

locked

argument indicates how the spinlock should be initialized:

TRUE

for locked

FALSE

for unlocked state.

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