Target Interface

Interface for implementing Joybus targets (controllers). More...

Topics
	GameCube Controller Target
	GameCube controller Joybus target.
	N64 Controller Target
	N64 controller Joybus target.

Data Structures
struct	joybus_target_api
struct	joybus_target
	A Joybus target, a device on the Joybus that can respond to commands. More...

Macros
#define	JOYBUS_TARGET(target)
	Macro to cast a concrete Joybus target instance to a generic Joybus target instance.

Typedefs
typedef void(*	joybus_target_response_cb_t) (const uint8_t *response, uint8_t len, void *user_data)
	Callback type for sending responses from target command handlers.

Functions
static int	joybus_target_byte_received (struct joybus_target *target, const uint8_t *command, uint8_t byte_idx, joybus_target_response_cb_t send_response, void *user_data)
	Handle a received command byte for a Joybus target.

Detailed Description

Interface for implementing Joybus targets (controllers).

Macro Definition Documentation

JOYBUS_TARGET

#define JOYBUS_TARGET

(

target

)

Value:

((struct joybus_target *)(target))

Macro to cast a concrete Joybus target instance to a generic Joybus target instance.

Typedef Documentation

joybus_target_response_cb_t

typedef void(* joybus_target_response_cb_t) (const uint8_t *response, uint8_t len, void *user_data)

Callback type for sending responses from target command handlers.

Parameters

response	the response data to send
len	the length of the response data
user_data	user data passed to the command handler

Function Documentation

joybus_target_byte_received()

int joybus_target_byte_received ( struct joybus_target * target, const uint8_t * command, uint8_t byte_idx, joybus_target_response_cb_t send_response, void * user_data )

inlinestatic

Handle a received command byte for a Joybus target.

Parameters

target	the target to handle the command
command	the command buffer
byte_idx	the index of the byte that was just received
send_response	a callback function to send the response
user_data	user data to pass to the response callback

Returns

positive number of bytes still expected, 0 if no more bytes expected, negative error code on failure