src/drivers/llc.h File Reference

Header for software LLC (logical link control) decode. More...

Go to the source code of this file.

Classes
struct	otto_llc_pulse
	Data link device kernel interface data word. More...
struct	otto_llc_timing
	Timing table entry for LLC decode. More...
struct	otto_llc_format
	LLC format definition. More...
Defines
#define	OTTO_PACKET_PULSES_MAX   102
	Maximum number of pulses per packet.
Enumerations
enum	otto_llc_symbol {   OTTO_LLC_SYM_UNKNOWN = 0, OTTO_LLC_SYM_ZERO, OTTO_LLC_SYM_ONE, OTTO_LLC_SYM_SOF,   OTTO_LLC_SYM_EOD, OTTO_LLC_SYM_EOF, OTTO_LLC_SYM_BRK, OTTO_LLC_SYM_NB0,   OTTO_LLC_SYM_NB1, OTTO_LLC_SYM_IFS }
	Logical link control symbols. More...
Functions
int	otto_llc_set_busenable (unsigned int busmask)
	Enable specified busses on software data link device.
int	otto_llc_get_busenable (unsigned int *busmask)
	Retrieve enabled busses on software data link device.
int	otto_llc_set_pulse (enum otto_llc_symbol id, struct otto_llc_pulse pulse)
	Configure special pulses on software data link device.
int	otto_llc_get_pulse (enum otto_llc_symbol id, struct otto_llc_pulse *pulse)
	Get special pulse configuration on software data link device.
int	otto_llc_decode (union otto_packet *pkt, struct otto_llc_pulse pulses[], int npulses)
	Data link decode.
int	otto_llc_encode (union otto_packet *pkt, struct otto_llc_pulse pulses[], int *npulses)
	Data link encode.

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Detailed Description

Header for software LLC (logical link control) decode.

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Define Documentation

#define OTTO_PACKET_PULSES_MAX   102

Maximum number of pulses per packet.

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Enumeration Type Documentation

enum otto_llc_symbol

Logical link control symbols. Enumeration values: OTTO_LLC_SYM_UNKNOWN  Unknown symbol. OTTO_LLC_SYM_ZERO  Zero data bit. OTTO_LLC_SYM_ONE  One data bit. OTTO_LLC_SYM_SOF  Start of frame. OTTO_LLC_SYM_EOD  End of data. OTTO_LLC_SYM_EOF  End of frame. OTTO_LLC_SYM_BRK  Break. OTTO_LLC_SYM_NB0  Passive normalization bit. OTTO_LLC_SYM_NB1  Active normalization bit. OTTO_LLC_SYM_IFS  Inter-frame separation.

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Function Documentation

int otto_llc_decode (  union otto_packet *  pkt, struct otto_llc_pulse  pulses[], int  npulses )

Data link decode. Returns: Zero on success, error on failure. Parameters: pkt  Decoded OBD2 packet pulses  Pulses npulses  Number of pulses

int otto_llc_encode (  union otto_packet *  pkt, struct otto_llc_pulse  pulses[], int *  npulses )

Data link encode. Returns: Zero on success, error on failure. Parameters: pkt  Packet to encode pulses  Encoded pulses npulses  On input, size of pulses. On return, number of pulses generated.

int otto_llc_get_busenable (  unsigned int *  busmask  )

Retrieve enabled busses on software data link device. Returns: Zero on success, error on failure Parameters: busmask  Bit fields specifying enabled busses

int otto_llc_get_pulse (  enum otto_llc_symbol  id, struct otto_llc_pulse *  pulse )

Get special pulse configuration on software data link device. Returns: Zero on success, error on failure Parameters: id  Pulse identification (only IFS and BRK supported) pulse  Pulse

int otto_llc_set_busenable (  unsigned int  busmask  )

Enable specified busses on software data link device. Returns: Zero of success, error on failure Parameters: busmask  Bit fields specifying busses to enable

int otto_llc_set_pulse (  enum otto_llc_symbol  id, struct otto_llc_pulse  pulse )

Configure special pulses on software data link device. Returns: Zero on success, error on failure Parameters: id  Pulse identification (only IFS and BRK supported) pulse  Pulse

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