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 struct hci_connection { 28 // linked list - assert: first field 29 linked_item_t item; 30 31 // remote side 32 bd_addr_t address; 33 34 // module handle 35 hci_con_handle_t con_handle; 36 37 // errands 38 hci_connection_flags_t flags; 39 } hci_connection_t; 40 41 /** 42 * main data structure 43 */ 44 typedef struct { 45 // transport component with configuration 46 hci_transport_t * hci_transport; 47 void * config; 48 49 // hardware power controller 50 bt_control_t * control; 51 52 // list of existing baseband connections 53 linked_list_t connections; 54 55 // single buffer for HCI Command assembly 56 uint8_t * hci_cmd_buffer; 57 58 /* host to controller flow control */ 59 uint8_t num_cmd_packets; 60 uint8_t num_acl_packets; 61 62 /* callback to L2CAP layer */ 63 void (*event_packet_handler)(uint8_t *packet, uint16_t size); 64 void (*acl_packet_handler) (uint8_t *packet, uint16_t size); 65 66 /* hci state machine */ 67 HCI_STATE state; 68 uint8_t substate; 69 uint8_t cmds_ready; 70 71 } hci_stack_t; 72 73 // set up HCI 74 void hci_init(hci_transport_t *transport, void *config, bt_control_t *control); 75 76 void hci_register_event_packet_handler(void (*handler)(uint8_t *packet, uint16_t size)); 77 78 void hci_register_acl_packet_handler (void (*handler)(uint8_t *packet, uint16_t size)); 79 80 // power control 81 int hci_power_control(HCI_POWER_MODE mode); 82 83 /** 84 * run the hci daemon loop once 85 */ 86 void hci_run(); 87 88 // create and send hci command packets based on a template and a list of parameters 89 int hci_send_cmd(hci_cmd_t *cmd, ...); 90 91 // send complete CMD packet 92 int hci_send_cmd_packet(uint8_t *packet, int size); 93 94 // send ACL packet 95 int hci_send_acl_packet(uint8_t *packet, int size); 96 97 // 98 void hci_emit_state(); 99