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draft example of ble client

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mila@ringwald.ch 2013-11-28 14:07:35 +00:00
parent 7d0f8f4b07
commit 37743dbf87
1 changed files with 222 additions and 62 deletions
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284
example/libusb/ble_client.c
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@ -60,6 +60,10 @@
#include "l2cap.h"
#include "att.h"
#ifdef HAVE_UART_CC2564
#include "bt_control_cc256x.h"
#endif
// gatt client state
typedef enum {
W4_ON,
@ -196,18 +200,24 @@ static void handle_advertising_packet(uint8_t *packet){
}
static void handle_peripheral_list(){
printf("handle_peripheral_list 1\n");
// only one connect is allowed, wait for result
if (get_peripheral_w4_connected()) return;
printf("handle_peripheral_list 2\n");
// only one cancel connect is allowed, wait for result
if (get_peripheral_w4_connect_cancelled()) return;
printf("handle_peripheral_list 3\n");
if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return;
printf("handle_peripheral_list 4\n");
if (!l2cap_can_send_conectionless_packet_now()) return;
printf("handle_peripheral_list 5\n");
printf("handle_peripheral_list empty %u\n", linked_list_empty(&le_connections));
linked_item_t *it;
for (it = (linked_item_t *) le_connections; it ; it = it->next){
le_peripheral_t * peripheral = (le_peripheral_t *) it;
printf("handle_peripheral_list, status %u\n", peripheral->state);
switch (peripheral->state){
case P_W2_CONNECT:
peripheral->state = P_W4_CONNECTED;
@ -256,16 +266,18 @@ static void handle_peripheral_list(){
}
void le_central_start_scan(){
if (state != IDLE) return;
le_command_status_t le_central_start_scan(){
if (state != IDLE) return BLE_PERIPHERAL_IN_WRONG_STATE;
state = START_SCAN;
gatt_client_run();
return BLE_PERIPHERAL_OK;
}
void le_central_stop_scan(){
if (state != SCANNING) return;
le_command_status_t le_central_stop_scan(){
if (state != SCANNING) return BLE_PERIPHERAL_IN_WRONG_STATE;
state = STOP_SCAN;
gatt_client_run();
return BLE_PERIPHERAL_OK;
}
static void le_peripheral_init(le_peripheral_t *context, uint8_t addr_type, bd_addr_t addr){
@ -279,6 +291,7 @@ le_command_status_t le_central_connect(le_peripheral_t *context, uint8_t addr_ty
//TODO: align with hci connection list capacity
le_peripheral_t * peripheral = get_peripheral_with_address(addr_type, addr);
if (!peripheral) {
printf("le_central_connect: new context, init\n");
le_peripheral_init(context, addr_type, addr);
linked_list_add(&le_connections, (linked_item_t *) context);
} else if (peripheral == context) {
@ -287,6 +300,9 @@ le_command_status_t le_central_connect(le_peripheral_t *context, uint8_t addr_ty
return BLE_PERIPHERAL_DIFFERENT_CONTEXT_FOR_ADDRESS_ALREADY_EXISTS;
}
printf("le_central_connect: connections is empty %u\n", linked_list_empty(&le_connections));
gatt_client_run();
return BLE_PERIPHERAL_OK;
}
@ -324,6 +340,7 @@ le_command_status_t le_central_disconnect(le_peripheral_t *context){
return BLE_PERIPHERAL_OK;
}
void test_client();
static void gatt_client_run(){
if (state == W4_ON) return;
@ -348,12 +365,14 @@ static void gatt_client_run(){
default:
break;
}
test_client();
}
static void packet_handler (void * connection, uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
if (packet_type != HCI_EVENT_PACKET) return;
switch (packet[0]) {
case BTSTACK_EVENT_STATE:
// BTstack activated, get started
@ -375,7 +394,7 @@ static void packet_handler (void * connection, uint8_t packet_type, uint16_t cha
default:
break;
}
return;
break;
}
if (COMMAND_COMPLETE_EVENT(packet, hci_le_create_connection_cancel)){
@ -447,6 +466,55 @@ static void packet_handler (void * connection, uint8_t packet_type, uint16_t cha
gatt_client_run();
}
static char * att_errors[] = {
"OK",
"Invalid Handle",
"Read Not Permitted",
"Write Not Permitted",
"Invalid PDU",
"Insufficient Authentication",
"Request Not Supported",
"Invalid Offset",
"Insufficient Authorization",
"Prepare Queue Full",
"Attribute Not Found",
"Attribute Not Long",
"Insufficient Encryption Key Size",
"Invalid Attribute Value Length",
"Unlikely Error",
"Insufficient Encryption",
"Unsupported Group Type",
"Insufficient Resources"
};
static void att_client_report_error(uint8_t * packet, uint16_t size){
uint8_t error_code = packet[4];
char * error = "Unknown";
if (error_code <= 0x11){
error = att_errors[error_code];
}
uint16_t handle = READ_BT_16(packet, 2);
printf("ATT_ERROR_REPORT handle 0x%04x, error: %u - %s\n", handle, error_code, error);
}
void printUUID128(const uint8_t * uuid){
int i;
for (i=15; i >= 0 ; i--){
printf("%02X", uuid[i]);
switch (i){
case 4:
case 6:
case 8:
case 10:
printf("-");
break;
default:
break;
}
}
}
static void att_packet_handler(uint8_t packet_type, uint16_t handle, uint8_t *packet, uint16_t size){
if (packet_type != ATT_DATA_PACKET) return;
@ -466,13 +534,49 @@ static void att_packet_handler(uint8_t packet_type, uint16_t handle, uint8_t *pa
peripheral->state = P_CONNECTED;
break;
}
case ATT_READ_BY_GROUP_TYPE_RESPONSE:
printf("att_packet_handler :: ATT_READ_BY_GROUP_TYPE_RESPONSE\n");
{
uint8_t attr_lenght = packet[1];
int i;
for (i = 2; i < size; i += attr_lenght){
uint16_t attr_handle = READ_BT_16(packet,i);
uint16_t end_group_handle = READ_BT_16(packet,i+2);
uint8_t attr_value[attr_lenght - 4];
memcpy( attr_value, &packet[i+4], attr_lenght - 4);
printf(" attr_handle %02x, end_group_handle %02x, data size %d\n", attr_handle, end_group_handle, attr_lenght);
}
}
break;
case ATT_ERROR_RESPONSE:
att_client_report_error(packet, size);
break;
default:
break;
}
gatt_client_run();
}
le_command_status_t le_central_get_services(le_peripheral_t *peripheral){
if (peripheral->state != P_CONNECTED) return BLE_PERIPHERAL_NOT_CONNECTED;
if (!l2cap_can_send_conectionless_packet_now()) return BLE_PERIPHERAL_BUSY;
uint8_t request[7];
request[0] = ATT_READ_BY_GROUP_TYPE_REQUEST;
uint16_t att_client_start_handle = 0x0001;
uint16_t att_client_end_handle = 0xffff;
uint16_t att_client_attribute_group_type = 0x2800;
bt_store_16(request, 1, att_client_start_handle);
bt_store_16(request, 3, att_client_end_handle);
bt_store_16(request, 5, att_client_attribute_group_type);
l2cap_send_connectionless(peripheral->handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, request, sizeof(request));
printf("le_central_get_services sent\n");
return BLE_PERIPHERAL_OK;
}
static hci_uart_config_t config;
void setup(void){
/// GET STARTED with BTstack ///
btstack_memory_init();
@ -481,13 +585,21 @@ void setup(void){
// 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;
// init HCI
remote_device_db_t * remote_db = (remote_device_db_t *) &remote_device_db_memory;
hci_init(transport, config, control, remote_db);
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_fixed_channel(att_packet_handler, L2CAP_CID_ATTRIBUTE_PROTOCOL);
@ -495,27 +607,22 @@ void setup(void){
}
// main == setup
int main(void)
{
setup();
/* test
le_central_init();
le_central_register_handler(handle_le_central_event);
*/
// turn on!
hci_power_control(HCI_POWER_ON);
// go!
run_loop_execute();
// happy compiler!
return 0;
// TEST CODE
static void hexdump2(void *data, int size){
int i;
for (i=0; i<size;i++){
printf("%02X ", ((uint8_t *)data)[i]);
}
printf("\n");
}
/* test
static void dump_ad_event(ad_event_t* e){
printf("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);
hexdump2( e->data, e->length);
}
static void dump_peripheral_state(peripheral_state_t p_state){
switch(p_state) {
@ -542,48 +649,67 @@ static void dump_state(){
case STOP_SCAN: printf("STOP_SCAN"); break;
case W4_SCAN_STOPPED: printf("W4_SCAN_STOPPED"); break;
};
printf("\n");
}
static void hexdump2(void *data, int size){
int i;
for (i=0; i<size;i++){
printf("%02X ", ((uint8_t *)data)[i]);
}
printf("\n");
}
static void dump_ad_event(ad_event_t* e){
printf("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);
hexdump2( e->data, e->length);
printf(" : ");
}
le_peripheral_t test_device;
static bd_addr_t test_device_addr = {0x1c, 0xba, 0x8c, 0x20, 0xc7, 0xf6};
typedef enum {
TC_IDLE,
TC_W4_SCAN_RESULT,
TC_SCAN_ACTIVE,
TC_W2_CONNECT,
TC_W4_CONNECT,
TC_CONNECTED,
TC_W4_ACTION,
TC_W4_ACTION_RESULT,
TC_W4_DISCONNECT,
TC_DISCONNECTED
} tc_state_t;
tc_state_t tc_state = TC_IDLE;
void test_client(){
static int i = 0;
switch(i){
case 0:
le_central_start_scan();
printf("--- test_client::calling start scan \n");
le_command_status_t status;
dump_state();
dump_peripheral_state(test_device.state);
switch(tc_state){
case TC_IDLE:
printf("test client - TC_IDLE\n");
status = le_central_start_scan();
if (status != BLE_PERIPHERAL_OK) return;
tc_state = TC_W4_SCAN_RESULT;
printf("test client - TC_W4_SCAN_RESULT\n");
break;
case 20:
printf("--- test_client::calling connect peripheral: status %d\n", le_central_connect(&test_device, 0, test_device_addr));
case TC_SCAN_ACTIVE:
printf("test client - TC_SCAN_ACTIVE\n");
status = le_central_stop_scan();
// if (status != BLE_PERIPHERAL_OK) return;
status = le_central_connect(&test_device, 0, test_device_addr);
printf("test client - status after connect %u, result %u\n", test_device.state, status);
if (status != BLE_PERIPHERAL_OK) return;
tc_state = TC_W4_CONNECT;
printf("test client - TC_W4_CONNECT\n");
break;
case 40:
i=-1;
// le_central_stop_scan();
printf("--- test_client::calling dissconnect peripheral: status %d\n", le_central_disconnect(&test_device));
case TC_CONNECTED:
printf("test client - TC_CONNECTED\n");
status = le_central_get_services(&test_device);
if (status != BLE_PERIPHERAL_OK) return;
tc_state = TC_W4_ACTION_RESULT;
printf("test client - TC_W4_ACTION_RESULT\n");
break;
default:
default:
break;
}
i++;
}
static void handle_le_central_event(le_central_event_t * event){
@ -591,19 +717,53 @@ static void handle_le_central_event(le_central_event_t * event){
le_peripheral_event_t * peripheral_event;
switch (event->type){
case GATT_ADVERTISEMENT:
if (tc_state != TC_W4_SCAN_RESULT) return;
advertisement_event = (ad_event_t*) event;
dump_ad_event(advertisement_event);
tc_state = TC_SCAN_ACTIVE;
printf("test client - TC_SCAN_ACTIVE\n");
break;
case GATT_CONNECTION_COMPLETE:
printf("test client - GATT_CONNECTION_COMPLETE\n");
// if (tc_state != TC_W4_CONNECT || tc_state != TC_W4_DISCONNECT) return;
peripheral_event = (le_peripheral_event_t *) event;
if (peripheral_event->status == 0){
printf("handle_le_central_event::device is connected\n");
tc_state = TC_CONNECTED;
printf("test client - TC_CONNECTED\n");
test_client();
} else {
printf("handle_le_central_event::disconnected with status %02x \n", peripheral_event->status);
tc_state = TC_DISCONNECTED;
printf("test client - TC_DISCONNECTED\n");
}
default:
break;
}
}*/
}
int main(void)
{
setup();
le_central_init();
le_central_register_handler(handle_le_central_event);
// turn on!
hci_power_control(HCI_POWER_ON);
// go!
run_loop_execute();
// happy compiler!
return 0;
}