diff options
Diffstat (limited to 'mavlink/include/mavlink/v1.0/common/mavlink_msg_data_stream.h')
| -rw-r--r-- | mavlink/include/mavlink/v1.0/common/mavlink_msg_data_stream.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/mavlink/include/mavlink/v1.0/common/mavlink_msg_data_stream.h b/mavlink/include/mavlink/v1.0/common/mavlink_msg_data_stream.h index dc0768e12..640ffebf4 100644 --- a/mavlink/include/mavlink/v1.0/common/mavlink_msg_data_stream.h +++ b/mavlink/include/mavlink/v1.0/common/mavlink_msg_data_stream.h @@ -168,6 +168,42 @@ static inline void mavlink_msg_data_stream_send(mavlink_channel_t chan, uint8_t #endif } +#if MAVLINK_MSG_ID_DATA_STREAM_LEN <= MAVLINK_MAX_PAYLOAD_LEN +/* + This varient of _send() can be used to save stack space by re-using + memory from the receive buffer. The caller provides a + mavlink_message_t which is the size of a full mavlink message. This + is usually the receive buffer for the channel, and allows a reply to an + incoming message with minimum stack space usage. + */ +static inline void mavlink_msg_data_stream_send_buf(mavlink_message_t *msgbuf, mavlink_channel_t chan, uint8_t stream_id, uint16_t message_rate, uint8_t on_off) +{ +#if MAVLINK_NEED_BYTE_SWAP || !MAVLINK_ALIGNED_FIELDS + char *buf = (char *)msgbuf; + _mav_put_uint16_t(buf, 0, message_rate); + _mav_put_uint8_t(buf, 2, stream_id); + _mav_put_uint8_t(buf, 3, on_off); + +#if MAVLINK_CRC_EXTRA + _mav_finalize_message_chan_send(chan, MAVLINK_MSG_ID_DATA_STREAM, buf, MAVLINK_MSG_ID_DATA_STREAM_LEN, MAVLINK_MSG_ID_DATA_STREAM_CRC); +#else + _mav_finalize_message_chan_send(chan, MAVLINK_MSG_ID_DATA_STREAM, buf, MAVLINK_MSG_ID_DATA_STREAM_LEN); +#endif +#else + mavlink_data_stream_t *packet = (mavlink_data_stream_t *)msgbuf; + packet->message_rate = message_rate; + packet->stream_id = stream_id; + packet->on_off = on_off; + +#if MAVLINK_CRC_EXTRA + _mav_finalize_message_chan_send(chan, MAVLINK_MSG_ID_DATA_STREAM, (const char *)packet, MAVLINK_MSG_ID_DATA_STREAM_LEN, MAVLINK_MSG_ID_DATA_STREAM_CRC); +#else + _mav_finalize_message_chan_send(chan, MAVLINK_MSG_ID_DATA_STREAM, (const char *)packet, MAVLINK_MSG_ID_DATA_STREAM_LEN); +#endif +#endif +} +#endif + #endif // MESSAGE DATA_STREAM UNPACKING |