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radio double support (#1540)

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* support for doubles in radio

* fix typos

* more docs

* more support

* fix build

* handle serial

* fix length

* fixing buffer allocation

* use same notation

* using decrRC
This commit is contained in:
Peli de Halleux
2018-10-29 10:42:12 -07:00
committed by GitHub
parent 58ea47da10
commit 93a22ae17f
3 changed files with 136 additions and 40 deletions
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docs/reference/radio/packet.md
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@ -10,6 +10,45 @@ A packet that was received by the radio.
* `serial` - The serial number of the @boardname@ that sent this packet or `0` if the @boardname@ did not include its serial number.
* `signal` - How strong the radio signal is. The exact range of values varies, but it goes approximately from `-128` dB (weak) to `-42` dB (strong).
## Packet layout
This section documents the data layout of the packet if you need to interpret the data outside of MakeCode.
Packet byte layout
| 0 | 1 ... 4 | 5 ... 8 | 9 ... 28
----------------------------------------------------------------
| packet type | system time | serial number | payload
* Serial number defaults to 0 unless enabled by user
* system time is milli-seconds since started, it will wrap around after a month or so
### Packet types
* PACKET_TYPE_NUMBER 0
payload: number (9 ... 12)
* PACKET_TYPE_VALUE 1
payload: number (9 ... 12), name length (13), name (14 ... 26)
* PACKET_TYPE_STRING 2
payload: string length (9), string (10 ... 28)
* PACKET_TYPE_BUFFER 3
payload: buffer length (9), buffer (10 ... 28)
* PACKET_TYPE_DOUBLE 4
payload: number (9 ... 16)
* PACKET_TYPE_DOUBLE_VALUE 5
payload: number (9 ... 16), name length (17), name (18 ... 26)
## See also
[on data packet received](/reference/radio/on-data-packet-received),