This seems to be a copy-paste error. The `GNRCICMPv6EchoParser` parse
function parses of course the output of the `ping6` command, not the
`nib neigh show` command.
The SI1133 from Silicon Labs is a UV Index Sensor and Ambient Light
Sensor in a small 2x2 mm DFN package. The sensor can measure
independently ultra violet (UV) light, infra red (IR) light and
ambient light, however the ambient light is also influenced by the
IR light requiring compensation from the IR readings.
The SI1133 is quite different from other Silicon Labs chips in RIOT OS
and therefore needs its own driver. In particular, the SI1133 has 7
different photodiode configurations to read but only 6 channels to
read them in parallel so only some channels can be read each time.
This patch implements a new driver allowing to read the data directly
and a saul interface for the three kinds of light source. There are
many configuration options including interrupts and continous modes
that are left out of this initial driver.
If the same callback function is used for multiple interfaces
(`NETDEV_INDEX_ANY`), it is necessary to also provide the index of
the interface to hand out and address.
The DAC can have some start-up delay.
If we try to write to it before it's ready, it will get stuck.
This happens now that `tests/driver_dac_dds` immediately sets a DAC
value after init.
The samd2x class of MCUs doesn't have this bit, but a quick test on
samd10 shows that it might not be nececary there - the DAC does not
get stuck when writing to it immediately after init.
The "Hello World" sample is really hard to hear on the noisy DAC / speaker
setup on my same54-xpro.
Replace it with a clearer sample from Wikimedia Commons and fix the ffmpeg
command line.
Add periph_uart_nonblocking. Since cc2538 has a transmit FIFO write
to the FIFO first and to a tsrb buffer only when the transmit FIFO
is full.
Rely on the FIFO TXIFLSEL condition to fill up FIFO as space becomes
available.
The set default is good enough for single-channel board, but whenever
DAC_DDS_CHAN is not zero (or even when a board has more), this may need
changing.
