#include <sys/types.h>
#include <bt/bt_defs.h>
#include <mhop/tp.h>
#include <mhop/ppp.h>
Transport initialization functions | |
| #define | VCP_DATA_CB void (*data_cb) (u_char vc_handle, u_char* data, u_short len, u_char port_nr); |
| Registration function for connection less data callback. The registered funciton is called on arrival of cl data. | |
| #define | VCP_VC_CHANGE_CB void (*vc_change_cb) (u_char vc_handle, u_char type, u_char reason); |
| Registration function for vc connection changes. The registered function is called if a new vc opens or an existing vc was closed. | |
| void | tp_init (struct btstack *bt_stack, void(*rel_con_change_registration)(void(*cb)(u_char type, u_char detail, bt_con_handle_t con_handle))) |
| Initializes the transport layer. | |
| void | tp_register_vc_data_cb (void(*cb)(u_char vc_handle, u_char *data, u_short len)) |
| Registration function for vc data callback. The registered function is called on arrival of vc data. | |
| short | vcp_register_service (u_char port, VCP_DATA_CB, VCP_VC_CHANGE_CB, u_char pkt_processors) |
Defines | |
| #define | VCP_NR_PORTS 10 |
| #define | VCP_PPP_PORT 3 |
VC connection callback types and reasons | |
| #define | VCP_CLOSE_LINK 2 |
| VC close reason: normal close (by other side). | |
| #define | VCP_CLOSE_NORMAL 1 |
| VC close reason: link failure. | |
| #define | VCP_CON_CLOSE 2 |
| VC type: close. | |
| #define | VCP_CON_OPEN 1 |
| VC type: open. | |
TP error codes | |
Returned by tp_send_*_data() functions on failure. | |
| #define | VCP_ERR_DEST 3 |
| Destination invalid. | |
| #define | VCP_ERR_PKT_LEN 2 |
| Packet size too large. | |
| #define | VCP_ERR_SEND 1 |
| Send error. | |
VC Packets | |
| #define | VCP_HEADER_LEN (2+2) |
| virtual connection data packet header length | |
| #define | VCP_MAX_PAYLOAD PPP_MAX_PAYLOAD - VCP_HEADER_LEN |
Functions | |
VCP API functions | |
| void | vcp_close_vc (u_char vc_handle) |
| Closes the virtual connection with handle vc_handle. | |
| u_char * | vcp_get_data_pointer (vcp_pkt_t *pkt) |
| Returns a pointer to the begin of payload data in a VC data packet. | |
| void | vcp_open_vc (bt_addr_t target, u_char ttl) |
| Opens a virtual connection to the target with address target. | |
| u_char | vcp_send_data (vcp_pkt_t *pkt, u_char vc_handle, u_short len) |
| Sends a VC data packet over the virtual connection with handle vc_handle. | |
Registration function for connection less data callback. The registered funciton is called on arrival of cl data.
| cb | Callback function to register. Fallowing arguments are passed to this function:
|
| void tp_init | ( | struct btstack * | bt_stack, | |
| void(*)(void(*cb)(u_char type, u_char detail, bt_con_handle_t con_handle)) | rel_con_change_registration | |||
| ) |
Initializes the transport layer.
| bt_stack | Pointer to the btstack. | |
| acl_com_stack | Pointer to the acl com stack. | |
| rel_con_change_registration | Registration function for reliable connection changes. |
| void vcp_close_vc | ( | u_char | vc_handle | ) |
Closes the virtual connection with handle vc_handle.
| vc_handle | VC handle of the virtual connection to close |
| u_char* vcp_get_data_pointer | ( | vcp_pkt_t * | pkt | ) |
Returns a pointer to the begin of payload data in a VC data packet.
| pkt | Pointer to the bt_l2cap_pkt_t packet |
pkt Opens a virtual connection to the target with address target.
| target | Address of the target | |
| ttl | Time to live |
Sends a VC data packet over the virtual connection with handle vc_handle.
To send a VC data packet, first use tp_get_vc_data_pointer(), fill in the data and then use this function.
| pkt | Pointer to the bt_l2cap_pkt_t packet to send | |
| vc_handle | VC handle of the virtual connection to use | |
| len | Length of the data to send in bytes |
1.5.1