aepko/Ardupilot2
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

AntennaTracker: avoid integer underflow in mavlink txspace check

Browse Source
This commit is contained in:
Andrew Tridgell 2014-07-27 21:14:55 +10:00
parent b82457eaa6
commit 1aeac23f46
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
Tools/AntennaTracker/GCS_Mavlink.pde
View File

@ -7,7 +7,7 @@
static bool in_mavlink_delay;
// check if a message will fit in the payload space available
#define CHECK_PAYLOAD_SIZE(id) if (payload_space < MAVLINK_MSG_ID_ ## id ## _LEN) return false
#define CHECK_PAYLOAD_SIZE(id) if (txspace < MAVLINK_NUM_NON_PAYLOAD_BYTES+MAVLINK_MSG_ID_ ## id ## _LEN) return false
/*
* !!NOTE!!
@ -166,7 +166,7 @@ static void NOINLINE send_simstate(mavlink_channel_t chan)
// try to send a message, return false if it won't fit in the serial tx buffer
bool GCS_MAVLINK::try_send_message(enum ap_message id)
{
int16_t payload_space = comm_get_txspace(chan) - MAVLINK_NUM_NON_PAYLOAD_BYTES;
uint16_t txspace = comm_get_txspace(chan);
switch (id) {
case MSG_HEARTBEAT:
CHECK_PAYLOAD_SIZE(HEARTBEAT);