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| author | Kevin O'Connor <kevin@koconnor.net> | 2017-09-11 13:07:54 -0400 |
|---|---|---|
| committer | Kevin O'Connor <kevin@koconnor.net> | 2017-09-11 13:12:18 -0400 |
| commit | 2a6a9eb52f1a8ef61ee6f354aeee79ab9b0c4a0f (patch) | |
| tree | 41eeb96d98acf26bfb9458bb35b4ad0860f829f1 /src/pru | |
| parent | bf85c61b4874a48929788c2e8030f1e59b71992c (diff) | |
| download | kutter-2a6a9eb52f1a8ef61ee6f354aeee79ab9b0c4a0f.tar.gz kutter-2a6a9eb52f1a8ef61ee6f354aeee79ab9b0c4a0f.tar.xz kutter-2a6a9eb52f1a8ef61ee6f354aeee79ab9b0c4a0f.zip | |
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>
Diffstat (limited to 'src/pru')
| -rw-r--r-- | src/pru/pru0.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/pru/pru0.c b/src/pru/pru0.c index 1239813d..58f15175 100644 --- a/src/pru/pru0.c +++ b/src/pru/pru0.c @@ -166,7 +166,9 @@ process_io(void) int can_sleep = check_can_read(); if (can_sleep) { flush_messages(); - asm("slp 1"); + while (!(read_r31() & (1 << (WAKE_PRU0_IRQ + R31_IRQ_OFFSET)))) { + //asm("slp 1"); + } } } } |