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add notifiable and indicatable characteristic that represents an 8 bit counter

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This commit is contained in:
matthias.ringwald@gmail.com 2014-01-06 22:11:29 +00:00
parent 157efbac7c
commit abb2e83f6a
3 changed files with 65 additions and 16 deletions
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17
ble/att_server.c
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@ -285,3 +285,20 @@ void att_server_init(uint8_t const * db, att_read_callback_t read_callback, att_
void att_server_register_packet_handler(btstack_packet_handler_t handler){
att_client_packet_handler = handler;
}
int att_server_can_send(){
if (att_request_handle == 0) return 0;
return hci_can_send_packet_now(HCI_ACL_DATA_PACKET);
}
void att_server_notify(uint16_t handle, uint8_t *value, uint16_t value_len){
uint8_t packet_buffer[att_connection.mtu];
uint16_t size = att_prepare_handle_value_notification(&att_connection, handle, value, value_len, packet_buffer);
l2cap_send_connectionless(att_request_handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, packet_buffer, size);
}
void att_server_indicate(uint16_t handle, uint8_t *value, uint16_t value_len){
uint8_t packet_buffer[att_connection.mtu];
uint16_t size = att_prepare_handle_value_indication(&att_connection, handle, value, value_len, packet_buffer);
l2cap_send_connectionless(att_request_handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, packet_buffer, size);
}

5
ble/att_server.h
View File

@ -38,6 +38,9 @@
#include <btstack/btstack.h>
#include <stdint.h>
#include "att.h"
void att_server_init(uint8_t const * db, att_read_callback_t read_callback, att_write_callback_t write_callback);
void att_server_register_packet_handler(btstack_packet_handler_t handler);
int att_server_can_send();
void att_server_notify(uint16_t handle, uint8_t *value, uint16_t value_len);
void att_server_indicate(uint16_t handle, uint8_t *value, uint16_t value_len);

59
example/libusb/ble_peripheral.c
View File

@ -33,15 +33,10 @@
//*****************************************************************************
//
// att device demo
// BLE Peripheral Demo
//
//*****************************************************************************
// TODO: seperate BR/EDR from LE ACL buffers
// ..
// NOTE: Supports only a single connection
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
@ -63,24 +58,52 @@
#include "gap_le.h"
#include "central_device_db.h"
///------
static int advertisements_enabled = 0;
#define HEARTBEAT_PERIOD_MS 1000
// test profile
#include "profile.h"
///------
static int advertisements_enabled = 0;
static timer_source_t heartbeat;
static uint8_t counter = 0;
static int update_client = 0;
static int client_configuration = 0;
static void app_run();
static void heartbeat_handler(struct timer *ts){
// restart timer
run_loop_set_timer(ts, HEARTBEAT_PERIOD_MS);
run_loop_add_timer(ts);
counter++;
update_client = 1;
app_run();
}
static void app_run(){
if (!client_configuration || !update_client) return;
if (!att_server_can_send()) return;
printf("Notify value %u\n", counter);
update_client = 0;
att_server_notify(0x0f, &counter, 1);
}
// write requests
static void att_write_callback(uint16_t handle, uint16_t transaction_mode, uint16_t offset, uint8_t *buffer, uint16_t buffer_size, signature_t * signature){
static int att_write_callback(uint16_t handle, uint16_t transaction_mode, uint16_t offset, uint8_t *buffer, uint16_t buffer_size, signature_t * signature){
printf("WRITE Callback, handle %04x\n", handle);
switch(handle){
case 0x000b:
buffer[buffer_size]=0;
printf("New text: %s\n", buffer);
case 0x0010:
client_configuration = buffer[0];
printf("Client Configuration set to %u\n", client_configuration);
break;
case 0x000d:
printf("New value: %u\n", buffer[0]);
default:
printf("Value: ");
hexdump(buffer, buffer_size);
break;
}
return 1;
}
static void app_packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
@ -180,9 +203,15 @@ void setup(void){
int main(void)
{
setup();
// gap_random_address_set_update_period(5000);
gap_random_address_set_update_period(60000);
gap_random_address_set_mode(GAP_RANDOM_ADDRESS_RESOLVABLE);
// set one-shot timer
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);