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Plane: fixed txsize check for airspeed info

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prevent underflow
This commit is contained in:
Andrew Tridgell 2014-07-22 18:08:39 +10:00
parent 6f538aa556
commit 43b2e34242
1 changed files with 2 additions and 2 deletions
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4
ArduPlane/GCS_Mavlink.pde
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@ -1612,8 +1612,8 @@ void gcs_send_text_fmt(const prog_char_t *fmt, ...)
static void gcs_send_airspeed_calibration(const Vector3f &vg) static void gcs_send_airspeed_calibration(const Vector3f &vg)
{ {
for (uint8_t i=0; i<num_gcs; i++) { for (uint8_t i=0; i<num_gcs; i++) {
if (comm_get_txspace((mavlink_channel_t)i) - MAVLINK_NUM_NON_PAYLOAD_BYTES >= if (comm_get_txspace((mavlink_channel_t)i) >=
MAVLINK_MSG_ID_AIRSPEED_AUTOCAL_LEN) { MAVLINK_NUM_NON_PAYLOAD_BYTES + MAVLINK_MSG_ID_AIRSPEED_AUTOCAL_LEN) {
airspeed.log_mavlink_send((mavlink_channel_t)i, vg); airspeed.log_mavlink_send((mavlink_channel_t)i, vg);
} }
} }