Hi !
I have coded 2 interrupts handlers for "time syncronisation app" : _ one is called by TIMER1 expiration to increment sec/msec variables updateClk() _ an other one is called on TTL signal to set sec/msec to arbitrary value (sync) syncClk()
From this link I've seen that these two handlers may execute in parallel which may cause data corruption : www.keil.com/.../rlarm_ar_inter_funct.htm
What I cannot find is : 1) how to check if interrupts nesting is enabled or not and how to disable it. 2) If I can't disable interrupts nesting I though about adding code to disable specific interrupt but does it mean that I would lose the hardware event. For example when executing syncClk() :
I disable TIMER1 MR0 match interrupt update sec/msec var enable TIMER1 MR0 match interrupt
If MR0 MATCH event occured during this process will the interrupt occures when I restore it ? Or do I simply lose it ?
Thanks for response.