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| author | Dean Camera <dean@fourwalledcubicle.com> | 2010-05-06 11:13:24 +0000 |
|---|---|---|
| committer | Dean Camera <dean@fourwalledcubicle.com> | 2010-05-06 11:13:24 +0000 |
| commit | cde2afc50e25054a0ba21c4454e7101d7ac02a35 (patch) | |
| tree | 6cccd0f8fc206054b4dbc412491c4937b02571c1 /LUFA/Drivers/USB/Class/Device/CDC.c | |
| parent | c3db72afdc9928afbf2a8986f6970aa85dd9902a (diff) | |
| download | lufa-cde2afc50e25054a0ba21c4454e7101d7ac02a35.tar.gz lufa-cde2afc50e25054a0ba21c4454e7101d7ac02a35.tar.bz2 lufa-cde2afc50e25054a0ba21c4454e7101d7ac02a35.zip | |
Ensure that the CDC class drivers return 0 if the number of unread bytes is queried and the bank has become empty.
Diffstat (limited to 'LUFA/Drivers/USB/Class/Device/CDC.c')
| -rw-r--r-- | LUFA/Drivers/USB/Class/Device/CDC.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/LUFA/Drivers/USB/Class/Device/CDC.c b/LUFA/Drivers/USB/Class/Device/CDC.c index 4cdea9485..ade2a1b50 100644 --- a/LUFA/Drivers/USB/Class/Device/CDC.c +++ b/LUFA/Drivers/USB/Class/Device/CDC.c @@ -195,9 +195,14 @@ uint16_t CDC_Device_BytesReceived(USB_ClassInfo_CDC_Device_t* const CDCInterface if (Endpoint_IsOUTReceived())
{
if (!(Endpoint_BytesInEndpoint()))
- Endpoint_ClearOUT();
-
- return Endpoint_BytesInEndpoint();
+ {
+ Endpoint_ClearOUT();
+ return 0;
+ }
+ else
+ {
+ return Endpoint_BytesInEndpoint();
+ }
}
else
{
|