From 9185712f1bf768269c19193fc72f8cda9654e122 Mon Sep 17 00:00:00 2001
From: Jan Breuer <jan.breuer@jaybee.cz>
Date: 周三, 06 3月 2013 21:25:08 +0800
Subject: [PATCH] Modified FIFO
---
libscpi/src/fifo.c | 10 ++++++----
1 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/libscpi/src/fifo.c b/libscpi/src/fifo.c
index 7c80c9f..cb9d385 100644
--- a/libscpi/src/fifo.c
+++ b/libscpi/src/fifo.c
@@ -12,10 +12,10 @@
fifo->rd = 0;
}
-bool_t fifo_push(fifo_t * fifo, int16_t value) {
+bool_t fifo_add(fifo_t * fifo, int16_t value) {
/* FIFO full? */
if (fifo->wr == ((fifo->rd + fifo->size) % (fifo->size + 1))) {
- return FALSE;
+ fifo_remove(fifo, NULL);
}
fifo->data[fifo->wr] = value;
@@ -24,13 +24,15 @@
return TRUE;
}
-bool_t fifo_pop(fifo_t * fifo, int16_t * value) {
+bool_t fifo_remove(fifo_t * fifo, int16_t * value) {
/* FIFO empty? */
if (fifo->wr == fifo->rd) {
return FALSE;
}
- *value = fifo->data[fifo->rd];
+ if(value) {
+ *value = fifo->data[fifo->rd];
+ }
fifo->rd = (fifo->rd + 1) % (fifo->size + 1);
--
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