I thought I submitted this question but I can't find it so maybe i didn't
hit post. If it is a duplicate, I apologize.
I am trying to figure out the pru and see how I would use it in my
application. I am using the beta c libraries, which may be a problem.
All of the things I am doing I have made to work individually. I just can't
get them to all work together.
My goal here is to synchronize a set of commands to the pru.
The Pru code is:
for (i = 0; i < 3; i++){
waitForHost();
// " CLR R31, R31, 30 \n"
// " WBS R31, 30 \n"
// " CLR R31, R31, 30 \n"
readInstruction();
// perform task
notifyHost();
// " LDI R31.b0, PRU0_ARM_INTERRUPT + 16 \n"
}
the Host code is:
initializeApplication();
for (i = 0; i < 3; i++){
writeInstruction();
notifyPru();
// prussdrv_pru_send_event(ARM_PRU0_INTERRUPT);
waitForPru();
// prussdrv_pru_wait_event(PRU_EVTOUT_0);
// prussdrv_pru_clear_event(PRU_EVTOUT_0, PRU0_ARM_INTERRUPT);
}
I added a write to shared memory location 0 for debug and when I run this
once the pru gets the first notification
it does not stop at the waitForHost() at the top of the loop. The loop
index is 2, never stopping at 0 or 1.
if I comment out the notifyPru(); call the pru waits and does not execute
the loop.
I can either get it to not execute any passes or all of them at once.
Any light would be appreciated.
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