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Moving telemetry documentation to it's own file.

This commit is contained in:
Dominic Clifton 2014-05-21 21:41:29 +01:00
parent 451b132764
commit 1e357f7966
2 changed files with 49 additions and 16 deletions
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16
docs/Configuration.md
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@ -132,22 +132,6 @@ set telemetry_provider = 1
save save
``` ```
## FrSky telemetry
FrSky telemetry signals are inverted. To connect a cleanflight capable board to an FrSKy receiver you have some options.
1. A hardware inverter - Built in to some flight controllers.
2. Use software serial and enable frsky_inversion.
3. Use a flight controller that has software configurable hardware inversion (e.g. STM32F30x).
For 1, just connect your inverter to a usart or software serial port.
For 2 and 3 use the cli command as follows:
```
set frsky_inversion = 1
```
## CLI command differences from baseflight ## CLI command differences from baseflight
### gps_type ### gps_type

49
docs/Telemetry.md Normal file
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@ -0,0 +1,49 @@
# Telemetry
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.
Two telemetry providers are currently supported, FrSky (the default) and Graupner HoTT V4.
## FrSky telemetry
See the Configuration examples in the documentation for details on how to enable it.
FrSky telemetry is transmit only and just requires a single connection from the TX pin of a serial port to the RX pin on an FrSky telemetry receiver.
FrSky telemetry signals are inverted. To connect a cleanflight capable board to an FrSKy receiver you have some options.
1. A hardware inverter - Built in to some flight controllers.
2. Use software serial and enable frsky_inversion.
3. Use a flight controller that has software configurable hardware inversion (e.g. STM32F30x).
For 1, just connect your inverter to a usart or software serial port.
For 2 and 3 use the cli command as follows:
```
set frsky_inversion = 1
```
## HoTT telemetry
See the Configuration examples in the documentation for details on how to enable it.
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.
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.
Connect as follows:
```
HoTT TX/RX -> Serial RX (connect directly)
Serial TX -> 1N4148 Diode -(| )-> HoTT TX/RX (connect via diode)
```
The diode should be arranged to allow the data signals to flow the right way
```
-(| )- == Diode, | indicates cathode marker.
```
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.