Added I/O queue checks to the channels, added notes in the readme, improved the FullDuplexDriver.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@940 35acf78f-673a-0410-8e92-d51de3d6d3f4

1 files changed, 15 insertions, 1 deletions

diff --git a/src/chserial.c b/src/chserial.c
index 4dac892f8..65179689d 100644
--- a/src/chserial.c
+++ b/src/chserial.c
@@ -28,6 +28,20 @@
 

 #if CH_USE_SERIAL_FULLDUPLEX

 

+/*

+ * Interface implementation, the following functions just invoke the equivalent

+ * queue-level function or macro.
+ */

+static bool_t putwouldblock(void *instance) {

+

+  return chOQIsFull(&((FullDuplexDriver *)instance)->d2.oqueue);

+}

+

+static bool_t getwouldblock(void *instance) {

+

+  return chIQIsEmpty(&((FullDuplexDriver *)instance)->d2.iqueue);

+}

+

 static msg_t put(void *instance, uint8_t b, systime_t timeout) {

 

   return chOQPutTimeout(&((FullDuplexDriver *)instance)->d2.oqueue, b, timeout);

@@ -49,7 +63,7 @@ static size_t read(void *instance, uint8_t *buffer, size_t n) {
 }

 

 static const struct FullDuplexDriverVMT vmt = {

-  {put, get},

+  {putwouldblock, getwouldblock, put, get},

   {write, read},

   {}

 };