Changes between Version 1 and Version 2 of tim_driver

Timestamp:

Oct 25, 2014, 8:24:09 PM (10 years ago)

Author:

alain

Comment:

--

tim_driver

@@ -26 +26 @@
 
 
- === void '''_timer_start'''( unsigned int cluster_xy,  unsigned int local_id,  unsigned int period ) === 
+ === int '''_timer_start'''( unsigned int cluster_xy,  unsigned int local_id,  unsigned int period ) === 
 This function activates a timer in the vci_timer component by writing in the proper register the period value.
 It can be used by both the kernel to initialise a "system" timer, or by a task (through a system call) to configure an "user" timer.
+Return 0 in case of success.
+Return -1 if timer index too large.
 
- === void '''_timer_stop'''( unsigned int cluster_xy,  unsigned int local_id ) ===
+ === int '''_timer_stop'''( unsigned int cluster_xy,  unsigned int local_id ) ===
 This function desactivates a timer in the vci_timer component by writing in the proper register.
+Return 0 in case of success.
+Return -1 if timer index too large.
 
- === void '''_timer_reset_irq'''( unsigned int cluster_xy,  unsigned int local_id ) ===
+ === int '''_timer_reset_irq'''( unsigned int cluster_xy,  unsigned int local_id ) ===
 This function acknowlegge a timer interrupt in the vci_timer  component by writing in the proper register.
 It can be used by both the isr_switch() for a "system" timer, or by the _isr_timer() for an "user" timer.
+Return 0 in case of success.
+Return -1 if timer index too large.
 
- === void '''_timer_reset_cpt'''( unsigned int cluster_xy,   unsigned int local_id) ===
+ === int '''_timer_reset_cpt'''( unsigned int cluster_xy,   unsigned int local_id) ===
 This function resets the timer counter. To do so, we re-write the period in the proper register, what causes the count to restart.
 This function is called during a context switch (user or preemptive).
+Return 0 in case of success.
+Return -1 if timer index too large.
 
  === void '''_timer_isr'''( unsigned int irq_type,  unsigned int irq_id,  unsigned int channel ) ===