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gatt battery level query example

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mila@ringwald.ch 2014-09-26 08:45:34 +00:00
parent d19ec76901
commit 2f2c3f50b1
2 changed files with 336 additions and 2 deletions
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7
example/libusb/Makefile
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@ -79,7 +79,7 @@ GATT_SERVER_OBJ = $(GATT_SERVER:.c=.o)
# create firmware image from common objects and example source file
all: ${BTSTACK_ROOT}/include/btstack/version.h gatt_browser sdp_rfcomm_query sdp_general_query spp_counter ble_peripheral \
all: ${BTSTACK_ROOT}/include/btstack/version.h gatt_browser gatt_battery_query sdp_rfcomm_query sdp_general_query spp_counter ble_peripheral \
ble_peripheral_sm_minimal gap_inquiry gap_dedicated_bonding gap_inquiry_and_bond l2cap_test spp_streamer \
classic_test ble_peripheral_uart_csr ble_peripheral_uart_cc256x ancs_client spp_and_le_counter \
sdp_bnep_query \
@ -152,8 +152,11 @@ ble_client: ${CORE_OBJ} ${COMMON_OBJ} ${ATT_OBJ} ${GATT_CLIENT_OBJ} ${SM_REAL} b
gatt_browser: ${CORE_OBJ} ${COMMON_OBJ} ${ATT_OBJ} ${GATT_CLIENT_OBJ} ${SM_REAL_OBJ} gatt_browser.c
${CC} ${CORE_OBJ} ${COMMON_OBJ} ${ATT_OBJ} ${GATT_CLIENT_OBJ} ${SM_REAL_OBJ} gatt_browser.c ${CFLAGS} ${LDFLAGS} -o $@
gatt_battery_query: ${CORE_OBJ} ${COMMON_OBJ} ${ATT_OBJ} ${GATT_CLIENT_OBJ} ${SM_REAL_OBJ} gatt_battery_query.c
${CC} ${CORE_OBJ} ${COMMON_OBJ} ${ATT_OBJ} ${GATT_CLIENT_OBJ} ${SM_REAL_OBJ} gatt_battery_query.c ${CFLAGS} ${LDFLAGS} -o $@
clean:
rm -f spp_counter sdp_rfcomm_query sdp_general_query sdp_bnep_query spp_counter_ssp ble_peripheral ble_client gatt_browser \
rm -f spp_counter sdp_rfcomm_query sdp_general_query sdp_bnep_query spp_counter_ssp ble_peripheral ble_client gatt_battery_query gatt_browser \
gatt_client ancs_client ble_peripheral_sm_minimal classic_test ble_peripheral_uart_csr ble_peripheral_uart \
gap_dedicated_bonding gap_inquiry gap_inquiry_and_bond l2cap_test spp_and_le_counter spp_streamer
rm -f *.o *.out *.hex

331
example/libusb/gatt_battery_query.c Normal file
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@ -0,0 +1,331 @@
/*
* Copyright (C) 2011-2013 by BlueKitchen GmbH
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holders nor the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
* 4. This software may not be used in a commercial product
* without an explicit license granted by the copyright holder.
*
* THIS SOFTWARE IS PROVIDED BY MATTHIAS RINGWALD AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
* RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
//*****************************************************************************
//
// BLE Client
//
//*****************************************************************************
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <btstack/run_loop.h>
#include <btstack/hci_cmds.h>
#include <btstack/utils.h>
#include <btstack/sdp_util.h>
#include "btstack-config.h"
#include "ad_parser.h"
#include "debug.h"
#include "btstack_memory.h"
#include "hci.h"
#include "hci_dump.h"
#include "l2cap.h"
#include "att.h"
#include "gatt_client.h"
#include "sm.h"
#ifdef HAVE_UART_CC2564
#include "bt_control_cc256x.h"
#endif
typedef struct advertising_report {
uint8_t type;
uint8_t event_type;
uint8_t address_type;
bd_addr_t address;
uint8_t rssi;
uint8_t length;
uint8_t * data;
} advertising_report_t;
typedef enum {
TC_IDLE,
TC_W4_SCAN_RESULT,
TC_W4_CONNECT,
TC_W4_SERVICE_RESULT,
TC_W4_CHARACTERISTIC_RESULT,
TC_W4_BATTERY_DATA
} gc_state_t;
static bd_addr_t cmdline_addr = { };
static int cmdline_addr_found = 0;
static gatt_client_t gc_context;
static uint16_t battery_service_uuid = 0x180F;
static uint16_t battery_level_characteristic_uuid = 0x2a19;
static le_service_t battery_service;
static le_characteristic_t config_characteristic;
static gc_state_t state = TC_IDLE;
static void printUUID(uint8_t * uuid128, uint16_t uuid16){
if (uuid16){
printf("%04x",uuid16);
} else {
printUUID128(uuid128);
}
}
static void dump_advertising_report(advertising_report_t * e){
printf(" * adv. event: evt-type %u, addr-type %u, addr %s, rssi %u, length adv %u, data: ", e->event_type,
e->address_type, bd_addr_to_str(e->address), e->rssi, e->length);
printf_hexdump(e->data, e->length);
}
static void dump_characteristic_value(le_characteristic_value_event_t * event){
printf(" * characteristic value of length %d *** ", event->blob_length );
printf_hexdump(event->blob , event->blob_length);
printf("\n");
}
static void dump_characteristic(le_characteristic_t * characteristic){
printf(" * characteristic: [0x%04x-0x%04x-0x%04x], properties 0x%02x, uuid ",
characteristic->start_handle, characteristic->value_handle, characteristic->end_handle, characteristic->properties);
printUUID(characteristic->uuid128, characteristic->uuid16);
printf("\n");
}
static void dump_service(le_service_t * service){
printf(" * service: [0x%04x-0x%04x], uuid ", service->start_group_handle, service->end_group_handle);
printUUID(service->uuid128, service->uuid16);
printf("\n");
}
static void error_code(int status){
switch(status){
case ATT_ERROR_INSUFFICIENT_AUTHENTICATION:
printf("ATT_ERROR_INSUFFICIENT_AUTHENTICATION. TODO: security manager is not complete yet.\n");
break;
default:
printf(" status 0x%02x\n", status);
break;
}
}
void handle_gatt_client_event(le_event_t * event){
switch(state){
case TC_W4_SERVICE_RESULT:
switch(event->type){
case GATT_SERVICE_QUERY_RESULT:
battery_service = ((le_service_event_t *) event)->service;
printf("Battery service found:\n");
dump_service(&battery_service);
break;
case GATT_QUERY_COMPLETE:
state = TC_W4_CHARACTERISTIC_RESULT;
printf("\nSearch for battery level characteristic in battery service. ");
gatt_client_discover_characteristics_for_service_by_uuid16(&gc_context, &battery_service, battery_level_characteristic_uuid);
break;
default:
break;
}
break;
case TC_W4_CHARACTERISTIC_RESULT:
switch(event->type){
case GATT_CHARACTERISTIC_QUERY_RESULT:
printf("Battery level characteristic found:\n");
config_characteristic = ((le_characteristic_event_t *) event)->characteristic;
dump_characteristic(&config_characteristic);
break;
case GATT_QUERY_COMPLETE:
state = TC_W4_BATTERY_DATA;
printf("\nConfigure battery level characteristic for notify.");
gatt_client_write_client_characteristic_configuration(&gc_context, &config_characteristic, GATT_CLIENT_CHARACTERISTICS_CONFIGURATION_NOTIFICATION);
break;
default:
break;
}
break;
case TC_W4_BATTERY_DATA:
if (event->type == GATT_QUERY_COMPLETE){
if (((gatt_complete_event_t*)event)->status != 0){
printf("\nNotification is not possible: ");
error_code(((gatt_complete_event_t*)event)->status);
}
break;
}
if (event->type != GATT_NOTIFICATION) break;
printf("\nBattery Data:\n");
dump_characteristic_value((le_characteristic_value_event_t *) event);
break;
default:
printf("error\n");
break;
}
}
static void fill_advertising_report_from_packet(advertising_report_t * report, uint8_t *packet){
int pos = 2;
report->event_type = packet[pos++];
report->address_type = packet[pos++];
memcpy(report->address, &packet[pos], 6);
pos += 6;
report->rssi = packet[pos++];
report->length = packet[pos++];
report->data = &packet[pos];
pos += report->length;
dump_advertising_report(report);
bd_addr_t found_device_addr;
memcpy(found_device_addr, report->address, 6);
swapX(found_device_addr, report->address, 6);
}
static void handle_hci_event(void * connection, uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
if (packet_type != HCI_EVENT_PACKET) return;
advertising_report_t report;
uint16_t gc_handle;
uint8_t event = packet[0];
switch (event) {
case BTSTACK_EVENT_STATE:
// BTstack activated, get started
if (packet[2] != HCI_STATE_WORKING) break;
if (cmdline_addr_found){
printf("Trying to connect to %s\n", bd_addr_to_str(cmdline_addr));
state = TC_W4_CONNECT;
le_central_connect(&cmdline_addr, 0);
break;
}
printf("BTstack activated, start scanning!\n");
state = TC_W4_SCAN_RESULT;
le_central_set_scan_parameters(0,0x0030, 0x0030);
le_central_start_scan();
break;
case GAP_LE_ADVERTISING_REPORT:
if (state != TC_W4_SCAN_RESULT) return;
fill_advertising_report_from_packet(&report, packet);
// stop scanning, and connect to the device
state = TC_W4_CONNECT;
le_central_stop_scan();
le_central_connect(&report.address,report.address_type);
break;
case HCI_EVENT_LE_META:
// wait for connection complete
if (packet[2] != HCI_SUBEVENT_LE_CONNECTION_COMPLETE) break;
if (state != TC_W4_CONNECT) return;
gc_handle = READ_BT_16(packet, 4);
// initialize gatt client context with handle, and add it to the list of active clients
gatt_client_start(&gc_context, gc_handle);
// query primary services
printf("\nSearch for battery service. ");
state = TC_W4_SERVICE_RESULT;
gatt_client_discover_primary_services_by_uuid16(&gc_context, battery_service_uuid);
break;
case HCI_EVENT_DISCONNECTION_COMPLETE:
printf("\nDISCONNECTED\n");
gatt_client_stop(&gc_context);
exit(0);
break;
default:
break;
}
}
static hci_uart_config_t config;
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/gatt_browser.pklg", HCI_DUMP_PACKETLOGGER);
// init HCI
remote_device_db_t * remote_db = (remote_device_db_t *) &remote_device_db_memory;
bt_control_t * control = NULL;
#ifndef HAVE_UART_CC2564
hci_transport_t * transport = hci_transport_usb_instance();
#else
hci_transport_t * transport = hci_transport_h4_instance();
control = bt_control_cc256x_instance();
// config.device_name = "/dev/tty.usbserial-A600eIDu"; // 5438
config.device_name = "/dev/tty.usbserial-A800cGd0"; // 5529
config.baudrate_init = 115200;
config.baudrate_main = 0;
config.flowcontrol = 1;
#endif
hci_init(transport, &config, control, remote_db);
l2cap_init();
l2cap_register_packet_handler(&handle_hci_event);
gatt_client_init();
gatt_client_register_packet_handler(&handle_gatt_client_event);
sm_init();
sm_set_io_capabilities(IO_CAPABILITY_NO_INPUT_NO_OUTPUT);
}
void usage(const char *name){
fprintf(stderr, "\nUsage: %s [-a|--address aa:bb:cc:dd:ee:ff]\n", name);
fprintf(stderr, "If no argument is provided, GATT browser will start scanning and connect to the first found device.\nTo connect to a specific device use argument [-a].\n\n");
}
int main(int argc, const char * argv[])
{
int arg = 1;
cmdline_addr_found = 0;
while (arg < argc) {
if(!strcmp(argv[arg], "-a") || !strcmp(argv[arg], "--address")){
arg++;
cmdline_addr_found = sscan_bd_addr((uint8_t *)argv[arg], cmdline_addr);
arg++;
continue;
}
usage(argv[0]);
return 0;
}
setup();
// turn on!
hci_power_control(HCI_POWER_ON);
// go!
run_loop_execute();
// happy compiler!
return 0;
}