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 * Hardware state of Bluetooth controller 21 */ 22 typedef enum { 23 HCI_POWER_OFF = 0, 24 HCI_POWER_ON 25 } HCI_POWER_MODE; 26 27 /** 28 * State of BTstack 29 */ 30 typedef enum { 31 HCI_STATE_OFF = 0, 32 HCI_STATE_INITIALIZING, 33 HCI_STATE_WORKING, 34 HCI_STATE_HALTING 35 } HCI_STATE; 36 37 /** 38 * Connection State 39 */ 40 typedef enum { 41 SEND_NEGATIVE_LINK_KEY_REQUEST = 1 << 0, 42 SEND_PIN_CODE_RESPONSE = 1 << 1 43 } hci_connection_flags_t; 44 45 typedef struct hci_connection { 46 // linked list - assert: first field 47 linked_item_t item; 48 49 // remote side 50 bd_addr_t address; 51 52 // module handle 53 hci_con_handle_t con_handle; 54 55 // errands 56 hci_connection_flags_t flags; 57 } hci_connection_t; 58 59 /** 60 * main data structure 61 */ 62 typedef struct { 63 // transport component with configuration 64 hci_transport_t * hci_transport; 65 void * config; 66 67 // hardware power controller 68 bt_control_t * control; 69 70 // list of existing baseband connections 71 linked_list_t connections; 72 73 // single buffer for HCI Command assembly 74 uint8_t * hci_cmd_buffer; 75 76 /* host to controller flow control */ 77 uint8_t num_cmd_packets; 78 uint8_t num_acl_packets; 79 80 /* callback to L2CAP layer */ 81 void (*event_packet_handler)(uint8_t *packet, uint16_t size); 82 void (*acl_packet_handler) (uint8_t *packet, uint16_t size); 83 84 /* hci state machine */ 85 HCI_STATE state; 86 uint8_t substate; 87 uint8_t cmds_ready; 88 89 } hci_stack_t; 90 91 // set up HCI 92 void hci_init(hci_transport_t *transport, void *config, bt_control_t *control); 93 94 void hci_register_event_packet_handler(void (*handler)(uint8_t *packet, uint16_t size)); 95 96 void hci_register_acl_packet_handler (void (*handler)(uint8_t *packet, uint16_t size)); 97 98 // power control 99 int hci_power_control(HCI_POWER_MODE mode); 100 101 /** 102 * run the hci daemon loop once 103 */ 104 void hci_run(); 105 106 // create and send hci command packets based on a template and a list of parameters 107 int hci_send_cmd(hci_cmd_t *cmd, ...); 108 109 // send complete CMD packet 110 int hci_send_cmd_packet(uint8_t *packet, int size); 111 112 // send ACL packet 113 int hci_send_acl_packet(uint8_t *packet, int size); 114 115 //