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gatt_client: add gatt_client_read_multiple_variable_characteristic_values

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This commit is contained in:
Matthias Ringwald 2023-06-16 16:34:58 +02:00
parent 7627a0deea
commit f125a8ef20
2 changed files with 81 additions and 5 deletions
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67
src/ble/gatt_client.c
View File

@ -407,10 +407,10 @@ static uint8_t att_read_blob_request(gatt_client_t *gatt_client, uint8_t request
}
static uint8_t
att_read_multiple_request(gatt_client_t *gatt_client, uint16_t num_value_handles, uint16_t *value_handles) {
att_read_multiple_request_with_opcode(gatt_client_t *gatt_client, uint16_t num_value_handles, uint16_t *value_handles, uint8_t opcode) {
uint8_t *request = gatt_client_reserve_request_buffer(gatt_client);
request[0] = ATT_READ_MULTIPLE_REQUEST;
request[0] = opcode;
uint16_t i;
uint16_t offset = 1;
for (i=0;i<num_value_handles;i++){
@ -421,6 +421,18 @@ att_read_multiple_request(gatt_client_t *gatt_client, uint16_t num_value_handles
return gatt_client_send(gatt_client, offset);
}
static uint8_t
att_read_multiple_request(gatt_client_t *gatt_client, uint16_t num_value_handles, uint16_t *value_handles) {
return att_read_multiple_request_with_opcode(gatt_client, num_value_handles, value_handles, ATT_READ_MULTIPLE_REQUEST);
}
#ifdef ENABLE_GATT_OVER_EATT
static uint8_t
att_read_multiple_variable_request(gatt_client_t *gatt_client, uint16_t num_value_handles, uint16_t *value_handles) {
return att_read_multiple_request_with_opcode(gatt_client, num_value_handles, value_handles, ATT_READ_MULTIPLE_VARIABLE_REQ);
}
#endif
#ifdef ENABLE_LE_SIGNED_WRITE
// precondition: can_send_packet_now == TRUE
static uint8_t att_signed_write_request(gatt_client_t *gatt_client, uint16_t request_type, uint16_t attribute_handle,
@ -569,6 +581,12 @@ static void send_gatt_read_multiple_request(gatt_client_t * gatt_client){
att_read_multiple_request(gatt_client, gatt_client->read_multiple_handle_count, gatt_client->read_multiple_handles);
}
#ifdef ENABLE_GATT_OVER_EATT
static void send_gatt_read_multiple_variable_request(gatt_client_t * gatt_client){
att_read_multiple_variable_request(gatt_client, gatt_client->read_multiple_handle_count, gatt_client->read_multiple_handles);
}
#endif
static void send_gatt_write_attribute_value_request(gatt_client_t * gatt_client){
att_write_request(gatt_client, ATT_WRITE_REQUEST, gatt_client->attribute_handle, gatt_client->attribute_length,
gatt_client->attribute_value);
@ -1183,6 +1201,13 @@ static bool gatt_client_run_for_gatt_client(gatt_client_t * gatt_client){
send_gatt_read_multiple_request(gatt_client);
break;
#ifdef ENABLE_GATT_OVER_EATT
case P_W2_SEND_READ_MULTIPLE_VARIABLE_REQUEST:
gatt_client->gatt_client_state = P_W4_READ_MULTIPLE_VARIABLE_RESPONSE;
send_gatt_read_multiple_variable_request(gatt_client);
break;
#endif
case P_W2_SEND_WRITE_CHARACTERISTIC_VALUE:
gatt_client->gatt_client_state = P_W4_WRITE_CHARACTERISTIC_VALUE_RESULT;
send_gatt_write_attribute_value_request(gatt_client);
@ -1880,6 +1905,19 @@ static void gatt_client_handle_att_response(gatt_client_t * gatt_client, uint8_t
}
break;
#ifdef ENABLE_GATT_OVER_EATT
case ATT_READ_MULTIPLE_VARIABLE_RSP:
switch (gatt_client->gatt_client_state) {
case P_W4_READ_MULTIPLE_RESPONSE:
report_gatt_characteristic_value(gatt_client, 0u, &packet[1], size - 1u);
gatt_client_handle_transaction_complete(gatt_client, ATT_ERROR_SUCCESS);
break;
default:
break;
}
break;
#endif
case ATT_ERROR_RESPONSE:
if (size < 5u) return;
att_status = packet[4];
@ -1941,6 +1979,9 @@ static void gatt_client_handle_att_response(gatt_client_t * gatt_client, uint8_t
case P_W4_READ_MULTIPLE_RESPONSE:
gatt_client->gatt_client_state = P_W2_SEND_READ_MULTIPLE_REQUEST;
break;
case P_W4_READ_MULTIPLE_VARIABLE_RESPONSE:
gatt_client->gatt_client_state = P_W2_SEND_READ_MULTIPLE_VARIABLE_REQUEST;
break;
case P_W4_WRITE_CHARACTERISTIC_VALUE_RESULT:
gatt_client->gatt_client_state = P_W2_SEND_WRITE_CHARACTERISTIC_VALUE;
break;
@ -2343,21 +2384,39 @@ uint8_t gatt_client_read_long_value_of_characteristic(btstack_packet_handler_t c
return gatt_client_read_long_value_of_characteristic_using_value_handle(callback, con_handle, characteristic->value_handle);
}
uint8_t gatt_client_read_multiple_characteristic_values(btstack_packet_handler_t callback, hci_con_handle_t con_handle, int num_value_handles, uint16_t * value_handles){
static uint8_t gatt_client_read_multiple_characteristic_values_with_state(btstack_packet_handler_t callback, hci_con_handle_t con_handle, int num_value_handles, uint16_t * value_handles, gatt_client_state_t state){
gatt_client_t * gatt_client;
uint8_t status = gatt_client_provide_context_for_request(con_handle, &gatt_client);
if (status != ERROR_CODE_SUCCESS){
return status;
}
#ifdef ENABLE_GATT_OVER_EATT
if (state == P_W2_SEND_READ_MULTIPLE_VARIABLE_REQUEST){
if (gatt_client->bearer_type != ATT_BEARER_ENHANCED_LE){
return ERROR_CODE_COMMAND_DISALLOWED;
}
}
#endif
gatt_client->callback = callback;
gatt_client->read_multiple_handle_count = num_value_handles;
gatt_client->read_multiple_handles = value_handles;
gatt_client->gatt_client_state = P_W2_SEND_READ_MULTIPLE_REQUEST;
gatt_client->gatt_client_state = state;
gatt_client_run();
return ERROR_CODE_SUCCESS;
}
uint8_t gatt_client_read_multiple_characteristic_values(btstack_packet_handler_t callback, hci_con_handle_t con_handle, int num_value_handles, uint16_t * value_handles){
return gatt_client_read_multiple_characteristic_values_with_state(callback, con_handle, num_value_handles, value_handles, P_W2_SEND_READ_MULTIPLE_REQUEST);
}
#ifdef ENABLE_GATT_OVER_EATT
uint8_t gatt_client_read_multiple_variable_characteristic_values(btstack_packet_handler_t callback, hci_con_handle_t con_handle, int num_value_handles, uint16_t * value_handles){
return gatt_client_read_multiple_characteristic_values_with_state(callback, con_handle, num_value_handles, value_handles, P_W2_SEND_READ_MULTIPLE_VARIABLE_REQUEST);
}
#endif
uint8_t gatt_client_write_value_of_characteristic_without_response(hci_con_handle_t con_handle, uint16_t value_handle, uint16_t value_length, uint8_t * value){
gatt_client_t * gatt_client;
uint8_t status = gatt_client_provide_context_for_handle(con_handle, &gatt_client);

19
src/ble/gatt_client.h
View File

@ -81,6 +81,9 @@ typedef enum {
P_W2_SEND_READ_MULTIPLE_REQUEST,
P_W4_READ_MULTIPLE_RESPONSE,
P_W2_SEND_READ_MULTIPLE_VARIABLE_REQUEST,
P_W4_READ_MULTIPLE_VARIABLE_RESPONSE,
P_W2_SEND_WRITE_CHARACTERISTIC_VALUE,
P_W4_WRITE_CHARACTERISTIC_VALUE_RESULT,
@ -629,7 +632,21 @@ uint8_t gatt_client_read_long_value_of_characteristic_using_value_handle_with_of
*/
uint8_t gatt_client_read_multiple_characteristic_values(btstack_packet_handler_t callback, hci_con_handle_t con_handle, int num_value_handles, uint16_t * value_handles);
/**
/*
* @brief Read multiple varaible characteristic values. Only supported over LE Enhanced Bearer
* The all results are emitted via single GATT_EVENT_CHARACTERISTIC_VALUE_QUERY_RESULT event,
* followed by the GATT_EVENT_QUERY_COMPLETE event, which marks the end of read.
* @param callback
* @param con_handle
* @param num_value_handles
* @param value_handles list of handles
* @return status BTSTACK_MEMORY_ALLOC_FAILED, if no GATT client for con_handle is found
* GATT_CLIENT_IN_WRONG_STATE , if GATT client is not ready
* ERROR_CODE_SUCCESS , if query is successfully registered
*/
uint8_t gatt_client_read_multiple_variable_characteristic_values(btstack_packet_handler_t callback, hci_con_handle_t con_handle, int num_value_handles, uint16_t * value_handles);
/**
* @brief Writes the characteristic value using the characteristic's value handle without
* an acknowledgment that the write was successfully performed.
* @param con_handle