1 /* 2 * hci.h 3 * 4 * Created by Matthias Ringwald on 4/29/09. 5 * 6 */ 7 8 #pragma once 9 10 #include "hci_cmds.h" 11 #include "utils.h" 12 #include "hci_transport.h" 13 #include "bt_control.h" 14 15 #include <stdint.h> 16 #include <stdlib.h> 17 #include <stdarg.h> 18 19 /** 20 * Connection State 21 */ 22 typedef enum { 23 SEND_NEGATIVE_LINK_KEY_REQUEST = 1 << 0, 24 SEND_PIN_CODE_RESPONSE = 1 << 1 25 } hci_connection_flags_t; 26 27 typedef enum { 28 SENT_CREATE_CONNECTION = 1, 29 RECEIVED_CONNECTION_REQUEST, 30 ACCEPTED_CONNECTION_REQUEST, 31 REJECTED_CONNECTION_REQUEST, 32 OPEN, 33 SENT_DISCONNECT 34 } CONNECTION_STATE; 35 36 typedef struct { 37 // linked list - assert: first field 38 linked_item_t item; 39 40 // remote side 41 bd_addr_t address; 42 43 // module handle 44 hci_con_handle_t con_handle; 45 46 // state 47 CONNECTION_STATE state; 48 49 // errands 50 hci_connection_flags_t flags; 51 52 } hci_connection_t; 53 54 /** 55 * main data structure 56 */ 57 typedef struct { 58 // transport component with configuration 59 hci_transport_t * hci_transport; 60 void * config; 61 62 // hardware power controller 63 bt_control_t * control; 64 65 // list of existing baseband connections 66 linked_list_t connections; 67 68 // single buffer for HCI Command assembly 69 uint8_t * hci_cmd_buffer; 70 71 /* host to controller flow control */ 72 uint8_t num_cmd_packets; 73 uint8_t num_acl_packets; 74 75 /* callback to L2CAP layer */ 76 void (*event_packet_handler)(uint8_t *packet, uint16_t size); 77 void (*acl_packet_handler) (uint8_t *packet, uint16_t size); 78 79 /* hci state machine */ 80 HCI_STATE state; 81 uint8_t substate; 82 uint8_t cmds_ready; 83 84 } hci_stack_t; 85 86 // set up HCI 87 void hci_init(hci_transport_t *transport, void *config, bt_control_t *control); 88 89 void hci_register_event_packet_handler(void (*handler)(uint8_t *packet, uint16_t size)); 90 91 void hci_register_acl_packet_handler (void (*handler)(uint8_t *packet, uint16_t size)); 92 93 // power control 94 int hci_power_control(HCI_POWER_MODE mode); 95 96 /** 97 * run the hci control loop once 98 */ 99 void hci_run(); 100 101 // create and send hci command packets based on a template and a list of parameters 102 int hci_send_cmd(hci_cmd_t *cmd, ...); 103 104 // send complete CMD packet 105 int hci_send_cmd_packet(uint8_t *packet, int size); 106 107 // send ACL packet 108 int hci_send_acl_packet(uint8_t *packet, int size); 109 110 // 111 void hci_emit_state(); 112 void hci_emit_connection_complete(hci_connection_t *conn); 113