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RC_Channels: zero all channels before populating 

Fix for CID 308365
This commit is contained in:
Peter Barker 2018-08-07 07:52:19 +10:00 committed by Andrew Tridgell
parent bc52d430f9
commit 87e7cc7ef0
1 changed files with 2 additions and 5 deletions
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7
libraries/RC_Channel/RC_Channels.cpp
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@ -61,16 +61,13 @@ void RC_Channels::init(void)
uint8_t RC_Channels::get_radio_in(uint16_t *chans, const uint8_t num_channels)
{
memset(chans, 0, num_channels*sizeof(*chans));
const uint8_t read_channels = MIN(num_channels, NUM_RC_CHANNELS);
for (uint8_t i = 0; i < read_channels; i++) {
chans[i] = channel(i)->get_radio_in();
}
// clear any excess channels we couldn't read
if (read_channels < num_channels) {
memset(&chans[NUM_RC_CHANNELS], 0, sizeof(uint16_t) * (num_channels - read_channels));
}
return read_channels;
}