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example/spp_streamer_client: lookup RFCOMM Server Channel by SDP

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This commit is contained in:
Matthias Ringwald 2019-09-16 10:47:55 +02:00
parent b43a2cb652
commit 71a95af981
1 changed files with 37 additions and 5 deletions
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42
example/spp_streamer_client.c
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@ -57,7 +57,10 @@
#include "btstack.h"
#define RFCOMM_SERVER_CHANNEL 1
// prototypes
static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size);
static uint8_t rfcomm_server_channel;
#define NUM_ROWS 25
#define NUM_COLS 40
@ -192,9 +195,38 @@ static void spp_send_packet(void){
#endif
/*
* @section Packet Handler
* @section SDP Query Packet Handler
*
* @text The packet handler of the combined example is just the combination of the individual packet handlers.
* @text Store RFCOMM Channel for SPP service and initiates RFCOMM connection
*/
static void handle_query_rfcomm_event(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
UNUSED(packet_type);
UNUSED(channel);
UNUSED(size);
switch (packet[0]){
case SDP_EVENT_QUERY_RFCOMM_SERVICE:
rfcomm_server_channel = sdp_event_query_rfcomm_service_get_rfcomm_channel(packet);
break;
case SDP_EVENT_QUERY_COMPLETE:
if (sdp_event_query_complete_get_status(packet)){
printf("SDP query failed 0x%02x\n", sdp_event_query_complete_get_status(packet));
break;
}
if (rfcomm_server_channel == 0){
printf("No SPP service found\n");
break;
}
printf("SDP query done, channel %u.\n", rfcomm_server_channel);
rfcomm_create_channel(packet_handler, peer_addr, rfcomm_server_channel, NULL);
break;
}
}
/*
* @section Gerenal Packet Handler
*
* @text Handles startup (BTSTACK_EVENT_STATE), inquiry, pairing, starts SDP query for SPP service, and RFCOMM connection
*/
static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
@ -234,9 +266,9 @@ static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *pack
start_scan();
break;
case W4_SCAN_COMPLETE:
printf("Start to connect\n");
printf("Start to connect and query for SPP service\n");
state = W4_RFCOMM_CHANNEL;
rfcomm_create_channel(packet_handler, peer_addr, RFCOMM_SERVER_CHANNEL, NULL);
sdp_client_query_rfcomm_channel_and_name_for_uuid(&handle_query_rfcomm_event, peer_addr, BLUETOOTH_ATTRIBUTE_PUBLIC_BROWSE_ROOT);
break;
default:
break;