Jitter

[kareltucek]

Todo:

• cleanup
• changelog

Closes #1114 .

Changelog:

• fix: decrease the dongle interval to actual 7.5ms, instead of scheduling-forced 11ms
• fix: increase advertising interval when not actively connecting, to reduce dongle mouse jitter

[kareltucek]

@mondalaci I am increasing the advertising interval to 1 second when uhk is not trying to actively switch the host. Are we ok with this?

[mondalaci]

What's the rationale for this change, and what was the previous behavior?

[kareltucek]

Advertisement occupies outgoing ble transports, making the right<->dongle connection miss every ~5th transport window (with fast advertising). This makes cursor movement over dongle jittery - as Phil reports in #1114 .

[mondalaci]

Sounds reasonable.

Just for the record, what was the previous advertising interval?

[kareltucek]

/** Recommended minimum advertising interval for fast advertising (mode 1). 30 ms. */
#define BT_GAP_ADV_FAST_INT_MIN_1               0x0030
/** Recommended maximum advertising interval for fast advertising (mode 1). 60 ms. */
#define BT_GAP_ADV_FAST_INT_MAX_1               0x0060

Effectively 35ms according to logs.