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pru: Avoid calling "slp" instruction on pru0 

If pru0 waits in sleep mode then a full beaglebone reboot is needed to
reprogram the pru0 firmware.  For now, avoid using the "slp"
instruction as a workaround.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2017-09-11 13:07:54 -04:00
parent bf85c61b48
commit 2a6a9eb52f
1 changed files with 3 additions and 1 deletions
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4
src/pru/pru0.c
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@ -166,7 +166,9 @@ process_io(void)
int can_sleep = check_can_read(); int can_sleep = check_can_read();
if (can_sleep) { if (can_sleep) {
flush_messages(); flush_messages();
asm("slp 1"); while (!(read_r31() & (1 << (WAKE_PRU0_IRQ + R31_IRQ_OFFSET)))) {
//asm("slp 1");
}
} }
} }
} }