mirror/btstack
1
0
Fork 0
mirror of https://github.com/bluekitchen/btstack.git synced 2025-01-07 09:55:45 +00:00
Code Issues Packages Projects Releases Wiki Activity
504353102e
btstack/example/libusb/spp_and_le_counter.c

275 lines
9.0 KiB
C
Raw Blame History

//*****************************************************************************
//
// minimal setup for HCI code
//
//*****************************************************************************
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "btstack-config.h"
#include <btstack/run_loop.h>
#include <btstack/sdp_util.h>
#include "debug.h"
#include "btstack_memory.h"
#include "hci.h"
#include "hci_dump.h"
#include "l2cap.h"
#include "rfcomm.h"
#include "sdp.h"
#include "spp_and_le_counter.h"
#include "att.h"
#include "att_server.h"
#include "central_device_db.h"
#include "gap_le.h"
#include "sm.h"
#define RFCOMM_SERVER_CHANNEL 1
#define HEARTBEAT_PERIOD_MS 1000
static uint16_t rfcomm_channel_id;
static uint8_t spp_service_buffer[150];
static int le_notification_enabled;
// THE Couner
static int counter = 0;
static char counter_string[30];
static int counter_string_len;
const uint8_t adv_data[] = {
// Flags general discoverable
0x02, 0x01, 0x02,
// Name
0x0b, 0x09, 'L', 'E', ' ', 'C', 'o', 'u', 'n', 't', 'e', 'r',
};
uint8_t adv_data_len = sizeof(adv_data);
typedef enum {
SET_ADVERTISEMENT_PARAMS = 1 << 0,
SET_ADVERTISEMENT_DATA = 1 << 1,
ENABLE_ADVERTISEMENTS = 1 << 2,
} todo_t;
static todo_t todos = 0;
static void gap_run(){
if (!hci_can_send_packet_now_using_packet_buffer(HCI_COMMAND_DATA_PACKET)) return;
if (todos & SET_ADVERTISEMENT_DATA){
printf("GAP_RUN: set advertisement data\n");
todos &= ~SET_ADVERTISEMENT_DATA;
hci_send_cmd(&hci_le_set_advertising_data, adv_data_len, adv_data);
return;
}
if (todos & SET_ADVERTISEMENT_PARAMS){
todos &= ~SET_ADVERTISEMENT_PARAMS;
uint8_t adv_type = 0; // default
bd_addr_t null_addr;
memset(null_addr, 0, 6);
uint16_t adv_int_min = 0x0030;
uint16_t adv_int_max = 0x0030;
hci_send_cmd(&hci_le_set_advertising_parameters, adv_int_min, adv_int_max, adv_type, 0, 0, &null_addr, 0x07, 0x00);
return;
}
if (todos & ENABLE_ADVERTISEMENTS){
printf("GAP_RUN: enable advertisements\n");
todos &= ~ENABLE_ADVERTISEMENTS;
hci_send_cmd(&hci_le_set_advertise_enable, 1);
return;
}
}
static void packet_handler (void * connection, uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
bd_addr_t event_addr;
uint8_t rfcomm_channel_nr;
uint16_t mtu;
switch (packet_type) {
case HCI_EVENT_PACKET:
switch (packet[0]) {
case BTSTACK_EVENT_STATE:
// bt stack activated, get started - set local name
if (packet[2] == HCI_STATE_WORKING) {
todos = SET_ADVERTISEMENT_PARAMS | SET_ADVERTISEMENT_DATA | ENABLE_ADVERTISEMENTS;
gap_run();
}
break;
case HCI_EVENT_PIN_CODE_REQUEST:
// inform about pin code request
printf("Pin code request - using '0000'\n\r");
bt_flip_addr(event_addr, &packet[2]);
hci_send_cmd(&hci_pin_code_request_reply, &event_addr, 4, "0000");
break;
case HCI_EVENT_USER_CONFIRMATION_REQUEST:
// inform about user confirmation request
printf("SSP User Confirmation Request with numeric value '%06u'\n", READ_BT_32(packet, 8));
printf("SSP User Confirmation Auto accept\n");
break;
case HCI_EVENT_DISCONNECTION_COMPLETE:
todos = ENABLE_ADVERTISEMENTS;
le_notification_enabled = 0;
gap_run();
break;
case RFCOMM_EVENT_INCOMING_CONNECTION:
// data: event (8), len(8), address(48), channel (8), rfcomm_cid (16)
bt_flip_addr(event_addr, &packet[2]);
rfcomm_channel_nr = packet[8];
rfcomm_channel_id = READ_BT_16(packet, 9);
printf("RFCOMM channel %u requested for %s\n\r", rfcomm_channel_nr, bd_addr_to_str(event_addr));
rfcomm_accept_connection_internal(rfcomm_channel_id);
break;
case RFCOMM_EVENT_OPEN_CHANNEL_COMPLETE:
// data: event(8), len(8), status (8), address (48), server channel(8), rfcomm_cid(16), max frame size(16)
if (packet[2]) {
printf("RFCOMM channel open failed, status %u\n\r", packet[2]);
} else {
rfcomm_channel_id = READ_BT_16(packet, 12);
mtu = READ_BT_16(packet, 14);
printf("\n\rRFCOMM channel open succeeded. New RFCOMM Channel ID %u, max frame size %u\n\r", rfcomm_channel_id, mtu);
}
break;
case RFCOMM_EVENT_CHANNEL_CLOSED:
rfcomm_channel_id = 0;
break;
default:
break;
}
break;
default:
break;
}
gap_run();
}
// ATT Client Read Callback for Dynamic Data
// - if buffer == NULL, don't copy data, just return size of value
// - if buffer != NULL, copy data and return number bytes copied
// @param offset defines start of attribute value
static uint16_t att_read_callback(uint16_t con_handle, uint16_t att_handle, uint16_t offset, uint8_t * buffer, uint16_t buffer_size){
if (att_handle == ATT_CHARACTERISTIC_0000FF11_0000_1000_8000_00805F9B34FB_01_VALUE_HANDLE){
if (buffer){
memcpy(buffer, &counter_string[offset], counter_string_len - offset);
}
return counter_string_len - offset;
}
return 0;
}
// write requests
static int att_write_callback(uint16_t con_handle, uint16_t att_handle, uint16_t transaction_mode, uint16_t offset, uint8_t *buffer, uint16_t buffer_size){
// printf("WRITE Callback, handle %04x, mode %u, offset %u, data: ", handle, transaction_mode, offset);
// hexdump(buffer, buffer_size);
if (att_handle != ATT_CHARACTERISTIC_0000FF11_0000_1000_8000_00805F9B34FB_01_CLIENT_CONFIGURATION_HANDLE) return 0;
le_notification_enabled = READ_BT_16(buffer, 0) == GATT_CLIENT_CHARACTERISTICS_CONFIGURATION_NOTIFICATION;
return 0;
}
static void heartbeat_handler(struct timer *ts){
counter++;
counter_string_len = sprintf(counter_string, "BTstack counter %04u\n\r", counter);
puts(counter_string);
if (rfcomm_channel_id){
int err = rfcomm_send_internal(rfcomm_channel_id, (uint8_t*) counter_string, counter_string_len);
if (err) {
log_error("rfcomm_send_internal -> error 0X%02x", err);
}
}
if (le_notification_enabled) {
att_server_notify(ATT_CHARACTERISTIC_0000FF11_0000_1000_8000_00805F9B34FB_01_VALUE_HANDLE, (uint8_t*) counter_string, counter_string_len);
}
run_loop_set_timer(ts, HEARTBEAT_PERIOD_MS);
run_loop_add_timer(ts);
}
void setup(void){
/// GET STARTED with BTstack ///
btstack_memory_init();
run_loop_init(RUN_LOOP_POSIX);
// use logger: format HCI_DUMP_PACKETLOGGER, HCI_DUMP_BLUEZ or HCI_DUMP_STDOUT
hci_dump_open("/tmp/hci_dump.pklg", HCI_DUMP_PACKETLOGGER);
// init HCI
hci_transport_t * transport = hci_transport_usb_instance();
hci_uart_config_t * config = NULL;
bt_control_t * control = NULL;
remote_device_db_t * remote_db = (remote_device_db_t *) &remote_device_db_memory;
hci_init(transport, config, control, remote_db);
hci_discoverable_control(1);
l2cap_init();
l2cap_register_packet_handler(packet_handler);
rfcomm_init();
rfcomm_register_packet_handler(packet_handler);
rfcomm_register_service_internal(NULL, RFCOMM_SERVER_CHANNEL, 100); // reserved channel, mtu=100
// init SDP, create record for SPP and register with SDP
sdp_init();
memset(spp_service_buffer, 0, sizeof(spp_service_buffer));
// service_record_item_t * service_record_item = (service_record_item_t *) spp_service_buffer;
// sdp_create_spp_service( (uint8_t*) &service_record_item->service_record, RFCOMM_SERVER_CHANNEL, "SPP Counter");
// printf("SDP service buffer size: %u\n\r", (uint16_t) (sizeof(service_record_item_t) + de_get_len((uint8_t*) &service_record_item->service_record)));
// sdp_register_service_internal(NULL, service_record_item);
sdp_create_spp_service( spp_service_buffer, RFCOMM_SERVER_CHANNEL, "SPP Counter");
printf("SDP service record size: %u\n\r", de_get_len(spp_service_buffer));
sdp_register_service_internal(NULL, spp_service_buffer);
hci_ssp_set_io_capability(SSP_IO_CAPABILITY_DISPLAY_YES_NO);
// setup central device db
central_device_db_init();
// setup SM: Display only
sm_init();
// setup ATT server
att_server_init(profile_data, att_read_callback, att_write_callback);
att_dump_attributes();
}
// main == setup
int main(void)
{
setup();
// set one-shot timer
timer_source_t heartbeat;
heartbeat.process = &heartbeat_handler;
run_loop_set_timer(&heartbeat, HEARTBEAT_PERIOD_MS);
run_loop_add_timer(&heartbeat);
// turn on!
hci_power_control(HCI_POWER_ON);
// go!
run_loop_execute();
// happy compiler!
return 0;
}
Reference in New Issue View Git Blame Copy Permalink