i want to know how to use logic analyser to check the pllclock also i want to initialize the non-blocking pll i.e. it should not wait for the lock state please help me through this i m new to the arm 7 family
Only note about use of interrupt for PLL lock is of course that the interrupt comes at a random position in the program execution. Having the switch take place at a known location in the program often has its advantages.
Still i want to be get cleared about the INTERRUPT for PLL connect concept. Will u plz explain it to me...! With refeerence to the code.
It works as the manual says it does. You can perform the first part of PLL activation and have the processor generate an interrupt when the PLL has locked. When you get the interrupt, you can perform the second part.
This allows you to insert own code to do a lot of other things instead of having a while loop busy-waiting for the PLL lock.
The manual for the chip specifically mentions that the PLOCK bit of the PLLSTAT register is connected to the interrupt controller and says: "This allows for software to turn on the PLL and continue with other functions without having to wait for the PLL to achieve lock. When the interrupt occurs (PLOCK = 1), the PLL may be connected, and the interrupt disabled."
Actual configuration/handling of interrupts is similar to other interrupt sources in the chip.
can u please give me a sample code for the same plz.......
I knew you would ask that. You just do not want to do any work yourself. Yes I can. But where do I send the bill?
Saurabh.Tiwari@kpitcummins.com
What there any part of this thread you did understand?
Things such as - what happens if you have a watchdog timer or UART configured and changes the processor frequency in the interrupt handler?