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example/le_streamer_client: use gatt_client_request_can_write_without_response_event

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This commit is contained in:
Matthias Ringwald 2018-02-01 15:17:49 +01:00
parent 47181045ae
commit 7fa79385c8
1 changed files with 36 additions and 34 deletions
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70
example/le_streamer_client.c
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@ -54,6 +54,9 @@
#include "btstack.h"
// prototypes
static void handle_gatt_client_event(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size);
typedef enum {
TC_OFF,
TC_IDLE,
@ -139,6 +142,29 @@ static void test_track_data(le_streamer_connection_t * context, int bytes_sent){
/* LISTING_END(tracking): Tracking throughput */
// stramer
static void streamer(le_streamer_connection_t * context){
if (connection_handle == HCI_CON_HANDLE_INVALID) return;
// create test data
context->counter++;
if (context->counter > 'Z') context->counter = 'A';
memset(context->test_data, context->counter, context->test_data_len);
// send
uint8_t status = gatt_client_write_value_of_characteristic_without_response(connection_handle, le_streamer_characteristic.value_handle, context->test_data_len, (uint8_t*) context->test_data);
if (status){
printf("error %02x for write without response!\n", status);
return;
} else {
test_track_data(&le_streamer_connection, context->test_data_len);
}
// request again
gatt_client_request_can_write_without_response_event(handle_gatt_client_event, connection_handle);
}
// returns 1 if name is found in advertisement
static int advertisement_report_contains_name(const char * name, uint8_t * advertisement_report){
// get advertisement from report event
@ -169,31 +195,6 @@ static int advertisement_report_contains_name(const char * name, uint8_t * adver
return 0;
}
// send function
static void try_send(le_streamer_connection_t * context){
if (connection_handle == HCI_CON_HANDLE_INVALID) return;
if (state != TC_W4_TEST_DATA) return;
while (1){
if (!att_dispatch_client_can_send_now(connection_handle)) return;
// create test data
context->counter++;
if (context->counter > 'Z') context->counter = 'A';
memset(context->test_data, context->counter, context->test_data_len);
// send
uint8_t status = gatt_client_write_value_of_characteristic_without_response(connection_handle, le_streamer_characteristic.value_handle, context->test_data_len, (uint8_t*) context->test_data);
if (status){
printf("error %02x for write without response!\n", status);
return;
} else {
test_track_data(&le_streamer_connection, context->test_data_len);
}
}
}
static void handle_gatt_client_event(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
UNUSED(packet_type);
UNUSED(channel);
@ -245,16 +246,17 @@ static void handle_gatt_client_event(uint8_t packet_type, uint16_t channel, uint
le_streamer_connection.test_data_len = btstack_min(mtu - 3, sizeof(le_streamer_connection.test_data));
printf("%c: ATT MTU = %u => use test data of len %u\n", le_streamer_connection.name, mtu, le_streamer_connection.test_data_len);
// enable notifications
state = TC_W4_TEST_DATA;
#if (TEST_MODE & TEST_MODE_ENABLE_NOTIFICATIONS)
printf("Start streaming - enable notify on test characteristic.\n");
state = TC_W4_ENABLE_NOTIFICATIONS_COMPLETE;
gatt_client_write_client_characteristic_configuration(handle_gatt_client_event, connection_handle, &le_streamer_characteristic, GATT_CLIENT_CHARACTERISTICS_CONFIGURATION_NOTIFICATION);
gatt_client_write_client_characteristic_configuration(handle_gatt_client_event, connection_handle,
&le_streamer_characteristic, GATT_CLIENT_CHARACTERISTICS_CONFIGURATION_NOTIFICATION);
break;
#endif
state = TC_W4_TEST_DATA;
#if (TEST_MODE & TEST_MODE_WRITE_WITHOUT_RESPONSE)
printf("Start streaming - request can send now.\n");
// note: temporary code until a proper gatt_client_register_for_can_send_write_without_response_callback(..) is implemented
try_send(&le_streamer_connection);
gatt_client_request_can_write_without_response_event(handle_gatt_client_event, connection_handle);
#endif
break;
default:
@ -268,8 +270,8 @@ static void handle_gatt_client_event(uint8_t packet_type, uint16_t channel, uint
printf("Notifications enabled, status %02x\n", gatt_event_query_complete_get_status(packet));
state = TC_W4_TEST_DATA;
#if (TEST_MODE & TEST_MODE_WRITE_WITHOUT_RESPONSE)
// note: temporary code until a proper gatt_client_register_for_can_send_write_without_response_callback(..) is implemented
try_send(&le_streamer_connection);
printf("Start streaming - request can send now.\n");
gatt_client_request_can_write_without_response_event(handle_gatt_client_event, connection_handle);
#endif
break;
default:
@ -289,6 +291,9 @@ static void handle_gatt_client_event(uint8_t packet_type, uint16_t channel, uint
break;
case GATT_EVENT_QUERY_COMPLETE:
break;
case GATT_EVENT_CAN_WRITE_WITHOUT_RESPONSE:
streamer(&le_streamer_connection);
break;
default:
printf("Unknown packet type %x\n", hci_event_packet_get_type(packet));
break;
@ -379,9 +384,6 @@ static void hci_event_handler(uint8_t packet_type, uint16_t channel, uint8_t *pa
default:
break;
}
// note: temporary code until a proper gatt_client_register_for_can_send_write_without_response_callback(..) is implemented
try_send(&le_streamer_connection);
}
#ifdef HAVE_BTSTACK_STDIN