Add nextcloud sensorlogger fw, fix some minor bugs.

qalex / blackboard-STC15

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Open nekromant opened 6 years ago

nekromant commented 6 years ago

This patchset does the following:

Adds a new target for logging to nextcloud sensorlogger
Fixes serial.c to make getc/putc operation blocking if there's no data/no free space in ring buffers, and adds a serial_avail() command to check the availability of data.