diff options
| author | Grissiom <[email protected]> | 2013-10-23 01:43:18 +0800 |
|---|---|---|
| committer | Grissiom <[email protected]> | 2013-10-23 01:43:18 +0800 |
| commit | 0feefc03b6008301a19a430427390cc9c44decf8 (patch) | |
| tree | aff36cf75ff11a4bcf336edceaa53df3d001fef3 /components/drivers/include/rtdevice.h | |
| parent | ac5da68db79fb98071463da28ac88bb2981c8a53 (diff) | |
device/pipe: add a control cmd to get the space left in pipe
Diffstat (limited to 'components/drivers/include/rtdevice.h')
| -rw-r--r-- | components/drivers/include/rtdevice.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/components/drivers/include/rtdevice.h b/components/drivers/include/rtdevice.h index 60d4dc1e8a..8ed9f34ca4 100644 --- a/components/drivers/include/rtdevice.h +++ b/components/drivers/include/rtdevice.h @@ -114,6 +114,8 @@ struct rt_pipe_device struct rt_portal_device *read_portal; }; +#define PIPE_CTRL_GET_SPACE 0x14 /**< get the remaining size of a pipe device */ + #define RT_DATAQUEUE_EVENT_UNKNOWN 0x00 #define RT_DATAQUEUE_EVENT_POP 0x01 #define RT_DATAQUEUE_EVENT_PUSH 0x02 |