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Spektrum bind support

Spektrum bind with hardware bind plug support.

The Spektrum bind code is actually only enabled for the NAZE, NAZE32PRO, CJMCU, CC3D targets.

Configure the bind code

The following parameters can be used to enable and configure this in the related target.h file:

SPEKTRUM_BIND          Enables the Spektrum bind code
BIND_PORT  GPIOA       Defines the port for the bind pin
BIND_PIN   Pin_3       Defines the bind pin (the satellite receiver is connected to)

This is to activate the hardware bind plug feature

HARDWARE_BIND_PLUG     Enables the hardware bind plug feature
BINDPLUG_PORT  GPIOB   Defines the port for the hardware bind plug
BINDPLUG_PIN   Pin_5   Defines the hardware bind plug pin

Hardware

The hardware bind plug will be enabled via defining HARDWARE_BIND_PLUG during building of the firmware. BINDPLUG_PORT and BINDPLUG_PIN also need to be defined (please see above). This is done automatically if the AlienWii32 firmware is build. The hardware bind plug is expected between the bind pin and ground.

Function

The bind code will actually work for NAZE, NAZE32PRO, CJMCU targets (USART2) and CC3D target (USART3, flex port). The spektrum_sat_bind CLI parameter is defining the number of bind impulses (1-10) send to the satellite receiver. If it will set to 0 bind will be disabled in any case. Please refer to the table below. If the hardware bind plug is configured the bind mode will only be activated if spektrum_sat_bind is set to a value between 1 and 10 and the plug is set during the firmware start-up. The bind plug should be always removed for normal flying. If no hardware bind plug is used the spektrum_sat_bind parameter should be reset to 0 manually after the bind is succefuly done. Please refer to the satellite receiver documentation for more details of the specific receiver in bind mode. Usually the bind mode will be indicated with some flashing LED’s.

Table with spektrum_sat_bind parameter value

Value	Receiver mode	Notes
3	DSM2 1024/22ms
5	DSM2 2048/11ms	default
7	DSMX 22ms
9	DSMX 11ms

More detailed information regarding the satellite binding process can be found here: http://wiki.openpilot.org/display/Doc/Spektrum+Satellite

Supported Hardware

NAZE, NAZE32PRO, CJMCU, CC3D targets (AlienWii32 with hardware bind plug)

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