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Update telemetry documentation now that telemetry_provider is gone. 

Closes #670.
This commit is contained in:
Dominic Clifton 2015-03-25 13:23:15 +00:00
parent 35abdb89f5
commit 8c5050848d
2 changed files with 11 additions and 24 deletions
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1
docs/Cli.md
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@ -142,7 +142,6 @@ Re-apply any new defaults as desired.
| nav_slew_rate | | 0 | 100 | 30 | Profile | UINT8 |
| serialrx_provider | When feature SERIALRX is enabled, this allows connection to several receivers which output data via digital interface resembling serial. See RX section. | 0 | 6 | 0 | Master | UINT8 |
| spektrum_sat_bind | | 0 | 10 | 0 | Master | UINT8 |
| telemetry_provider | Choose what type of telemetry to output. See Telemetry section. | 0 | 3 | 0 | Master | UINT8 |
| telemetry_switch | Which aux channel to use to change serial output & baud rate (MSP / Telemetry). It disables automatic switching to Telemetry when armed. | 0 | 1 | 0 | Master | UINT8 |
| telemetry_inversion | | 0 | 1 | 0 | Master | UINT8 |
| frsky_default_lattitude | | -90 | 90 | 0 | Master | FLOAT |

34
docs/Telemetry.md
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@ -2,7 +2,7 @@
Telemetry allows you to know what is happening on your aircraft while you are flying it. Among other things you can receive battery voltages and GPS positions on your transmitter.
Telemetry can be either always on, or enabled when armed. If no serial port is set to be telemetry-only then telemetry will only be enabled when armed.
Telemetry can be either always on, or enabled when armed. If a serial port for telemetry is shared with other functionality then then telemetry will only be enabled when armed on that port.
Telemetry is enabled using the 'TELEMETRY` feature.
@ -10,24 +10,9 @@ Telemetry is enabled using the 'TELEMETRY` feature.
feature TELEMETRY
```
Multiple telemetry providers are currently supported, FrSky (the default), Graupner HoTT V4, SmartPort (S.Port) and MultiWii Serial Protocol (MSP)
Multiple telemetry providers are currently supported, FrSky, Graupner HoTT V4, SmartPort (S.Port) and MultiWii Serial Protocol (MSP)
Use the `telemetry_provider` cli command to select one.
| Value | Meaning |
| ----- | --------------- |
| 0 | FrSky (Default) |
| 1 | HoTT |
| 2 | MSP |
| 3 | SmartPort |
Example:
```
set telemetry_provider = 1
```
There are further examples in the Configuration section of the documentation.
All telemetry systems use serial ports, configure serial ports to use the telemetry system required.
## FrSky telemetry
@ -72,11 +57,14 @@ RPM requires that the 'blades' setting is set to 12 on your receiver/display - t
## HoTT telemetry
HoTT telemetry can be used when the TX and RX pins of a serial port are connected using a diode and a single wire to the T port on a HoTT receiver.
Only Electric Air Modules and GPS Modules are emulated.
Only Electric Air Modules and GPS Modules are emulated, remember to enable them on your transmitter - in the Telemetry Menu on the MX-20.
Use the latest Graupner firmware for your transmitter and receiver.
Older HoTT transmitters required the EAM and GPS modules to be enabled in the telemetry menu of the transmitter. (e.g. on MX-20)
Serial ports use two wires but HoTT uses a single wire so some electronics are required so that the signals don't get mixed up.
Serial ports use two wires but HoTT uses a single wire so some electronics are required so that the signals don't get mixed up. The TX and RX pins of
a serial port should be connected using a diode and a single wire to the `T` port on a HoTT receiver.
Connect as follows:
@ -93,11 +81,11 @@ The diode should be arranged to allow the data signals to flow the right way
As noticed by Skrebber the GR-12 (and probably GR-16/24, too) are based on a PIC 24FJ64GA-002, which has 5V tolerant digital pins.
Note: The SoftSerial ports are not listed as 5V tolerant in the STM32F103xx data sheet pinouts and pin description section. Verify if you require a 5v/3.3v level shifters.
Note: The SoftSerial ports may not be 5V tolerant on your board. Verify if you require a 5v/3.3v level shifters.
## MultiWii Serial Protocol (MSP)
MSP Telemetry simply transmitts MSP packets in sequence to any MSP device attached to the telemetry port. It rotates though a fixes sequence of command responses.
MSP Telemetry simply transmits MSP packets in sequence to any MSP device attached to the telemetry port. It rotates though a fixes sequence of command responses.
It is transmit only, it can work at any supported baud rate.