Commit Graph

2 Commits

Author SHA1 Message Date
Lucas De Marchi 66a1e420cb AP_HAL_Linux: RCInput_SoloLink: better name to first field
Checking the time on the tcpdump capture, it matches the first fields
from the data:

$ tshark -n -c 4 -r  ~/tmp/solo/rc.pcap
    1   0.000000     10.1.1.1 → 10.1.1.10    UDP 68 5005 → 5005 Len=26
    2   0.019976     10.1.1.1 → 10.1.1.10    UDP 68 5005 → 5005 Len=26
    3   0.040046     10.1.1.1 → 10.1.1.10    UDP 68 5005 → 5005 Len=26
    4   0.059961     10.1.1.1 → 10.1.1.10    UDP 68 5005 → 5005 Len=26

From the previous commit (first 2 packets):

     5fa8 f441 3414 0500 73d7  dc05 dc05 dc05 db05 e803 e803 e803 f401
     73f6 f441 3414 0500 74d7  dc05 dc05 dc05 db05 e803 e803 e803 f401

0x0005143441f45fa8 - 0x0005143441f4f673 = 0x4E14 = 19988 (usec)

Which seems to approximately match for the other packets as well. We are
not using the field since we rather get the time when we receive it, but
at least use a better name.
2017-08-17 12:04:27 -07:00
Lucas De Marchi 79b004cf6a AP_HAL_Linux: add prototype for handling SoloLink
This allows to use a Solo controller to control Linux-based flight
controllers. The protocol has been derived by analyzing a tcpdump
trace: some fields are ignored. Example trace of RC data (obtained
with `tshark -T fields -e data -n -c 5 -r  rc.pcap`

 unkonwn              seq   ch1  ch2  ch3  ...                ch8
 5fa8 f441 3414 0500 73d7  dc05 dc05 dc05 db05 e803 e803 e803 f401
 73f6 f441 3414 0500 74d7  dc05 dc05 dc05 db05 e803 e803 e803 f401
 dc44 f541 3414 0500 75d7  dc05 dc05 dc05 db05 e803 e803 e803 f401
 bc92 f541 3414 0500 76d7  dc05 dc05 dc05 db05 e803 e803 e803 f401
 dfe0 f541 3414 0500 77d7  dc05 dc05 dc05 db05 e803 e803 e803 f401
2017-08-17 12:04:27 -07:00