implemented a serial interface using fcm, as per [url]https://forum.sierrawireless.com/t/simple-uart-echo-program/4739/1] (thanks josepvr) the AT command version in the examples was
I then buffer the uart receive events data in a buffer. this is then read by a timer event running at max rate 18ms.
If I run at 9600bd I expected to see ~18 bytes per timer period, however I seem to see bursts of precisely 56 bytes at random intervals.
If I then change to 115kbd seem to see bursts of precisely 56 bytes at random intervals.
Is this normal ?