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altos/stm32l: Add support for software-driven HW flow control
[fw/altos]
/
src
/
kernel
/
ao.h
diff --git
a/src/kernel/ao.h
b/src/kernel/ao.h
index a794ba710e62d584d32ce57c5d131e85c379981d..6ed0299e2d707baa607a515394ab4f4eccb7988b 100644
(file)
--- a/
src/kernel/ao.h
+++ b/
src/kernel/ao.h
@@
-820,6
+820,8
@@
struct ao_fifo {
} while(0)
#define ao_fifo_full(f) ((((f).insert + 1) & (AO_FIFO_SIZE-1)) == (f).remove)
} while(0)
#define ao_fifo_full(f) ((((f).insert + 1) & (AO_FIFO_SIZE-1)) == (f).remove)
+#define ao_fifo_mostly(f) ((((f).insert - (f).remove) & (AO_FIFO_SIZE-1)) >= (AO_FIFO_SIZE * 3 / 4))
+#define ao_fifo_barely(f) ((((f).insert - (f).remove) & (AO_FIFO_SIZE-1)) >= (AO_FIFO_SIZE * 1 / 4))
#define ao_fifo_empty(f) ((f).insert == (f).remove)
#if PACKET_HAS_MASTER || PACKET_HAS_SLAVE
#define ao_fifo_empty(f) ((f).insert == (f).remove)
#if PACKET_HAS_MASTER || PACKET_HAS_SLAVE