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ble client: implemented write characteristic value wihout und with response, untested

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mila@ringwald.ch 2014-03-20 11:28:16 +00:00
parent 6cdc5db2ef
commit ef07dcc400
3 changed files with 74 additions and 6 deletions
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60
example/libusb/ble_client.c
View File

@ -185,6 +185,17 @@ static le_command_status_t att_read_blob_request(uint16_t request_type, int16_t
}
static le_command_status_t att_write_request(uint16_t request_type, int16_t peripheral_handle, uint16_t attribute_handle, uint16_t value_length, uint8_t * data){
if (!l2cap_can_send_conectionless_packet_now()) return BLE_PERIPHERAL_BUSY;
// TODO: use prepared buffers
uint8_t request[3+value_length];
request[0] = request_type;
bt_store_16(request, 1, attribute_handle);
memcpy(&request[3], data, value_length);
l2cap_send_connectionless(peripheral_handle, L2CAP_CID_ATTRIBUTE_PROTOCOL, request, sizeof(request));
return BLE_PERIPHERAL_OK;
}
static le_command_status_t send_gatt_services_request(le_peripheral_t *peripheral){
return att_read_by_type_or_group_request(ATT_READ_BY_GROUP_TYPE_REQUEST, GATT_PRIMARY_SERVICE_UUID, peripheral->handle, peripheral->start_group_handle, peripheral->end_group_handle);
@ -225,6 +236,10 @@ static le_command_status_t send_gatt_read_long_characteristic_value_request(le_p
return att_read_blob_request(ATT_READ_BLOB_REQUEST, peripheral->handle, peripheral->characteristic_value_handle, peripheral->characteristic_value_offset);
}
static le_command_status_t send_gatt_write_characteristic_value_request(le_peripheral_t * peripheral){
return att_write_request(ATT_WRITE_REQUEST, peripheral->handle, peripheral->characteristic_value_handle, peripheral->characteristic_value_length, peripheral->data);
}
static inline void send_gatt_complete_event(le_peripheral_t * peripheral, uint8_t type, uint8_t status){
le_peripheral_event_t event;
event.type = type;
@ -418,7 +433,13 @@ static void handle_peripheral_list(){
if (status != BLE_PERIPHERAL_OK) break;
peripheral->state = P_W4_READ_LONG_CHARACTERISTIC_VALUE_RESULT;
break;
case P_W2_SEND_WRITE_CHARACTERISTIC_VALUE:
status = send_gatt_write_characteristic_value_request(peripheral);
if (status != BLE_PERIPHERAL_OK) break;
peripheral->state = P_W4_WRITE_CHARACTERISTIC_VALUE_RESULT;
break;
case P_W2_DISCONNECT:
peripheral->state = P_W4_DISCONNECTED;
hci_send_cmd(&hci_disconnect, peripheral->handle,0x13);
@ -615,11 +636,11 @@ le_command_status_t le_central_read_value_of_characteristic_using_value_handle(l
return BLE_PERIPHERAL_OK;
}
le_command_status_t le_central_read_value_of_characteristic(le_peripheral_t *peripheral, le_characteristic_t *characteristic){
return le_central_read_value_of_characteristic_using_value_handle(peripheral, characteristic->value_handle);
}
le_command_status_t le_central_read_long_value_of_characteristic_using_value_handle(le_peripheral_t *peripheral, uint16_t value_handle){
if (peripheral->state != P_CONNECTED) return BLE_PERIPHERAL_IN_WRONG_STATE;
peripheral->characteristic_value_handle = value_handle;
@ -629,11 +650,32 @@ le_command_status_t le_central_read_long_value_of_characteristic_using_value_han
return BLE_PERIPHERAL_OK;
}
le_command_status_t le_central_read_long_value_of_characteristic(le_peripheral_t *peripheral, le_characteristic_t *characteristic){
return le_central_read_long_value_of_characteristic_using_value_handle(peripheral, characteristic->value_handle);
}
static int is_connected(le_peripheral_t * peripheral){
return peripheral->state >= P_CONNECTED && peripheral->state < P_W2_CANCEL_CONNECT;
}
le_command_status_t le_central_write_value_of_characteristic_without_response(le_peripheral_t *peripheral, uint16_t characteristic_handle, uint16_t length, uint8_t * data){
if (length >= peripheral->mtu - 3) return BLE_VALUE_TOO_LONG;
if (!is_connected(peripheral)) return BLE_PERIPHERAL_IN_WRONG_STATE;
return att_write_request(ATT_WRITE_COMMAND, peripheral->handle, characteristic_handle, length, data);
}
le_command_status_t le_central_write_value_of_characteristic(le_peripheral_t *peripheral, uint16_t characteristic_handle, uint16_t length, uint8_t * data){
if (length >= peripheral->mtu - 3) return BLE_VALUE_TOO_LONG;
if (peripheral->state != P_CONNECTED) return BLE_PERIPHERAL_IN_WRONG_STATE;
peripheral->characteristic_value_handle = characteristic_handle;
peripheral->characteristic_value_length = length;
peripheral->data = data;
peripheral->state = P_W2_SEND_WRITE_CHARACTERISTIC_VALUE;
gatt_client_run();
return BLE_PERIPHERAL_OK;
}
static void gatt_client_run(){
if (state == W4_ON) return;
@ -1102,6 +1144,16 @@ static void att_packet_handler(uint8_t packet_type, uint16_t handle, uint8_t *pa
trigger_next_characteristic_descriptor_query(peripheral, descriptor.handle);
break;
}
case ATT_WRITE_RESPONSE:
switch(peripheral->state){
case P_W4_WRITE_CHARACTERISTIC_VALUE_RESULT:
peripheral->state = P_CONNECTED;
send_gatt_complete_event(peripheral, GATT_CHARACTERISTIC_VALUE_WRITE_RESPONSE, 0);
break;
default:
break;
}
break;
case ATT_ERROR_RESPONSE:
// printf("ATT_ERROR_RESPONSE error %u, state %u\n", packet[4], peripheral->state);
switch (packet[4]){
@ -1185,7 +1237,7 @@ static void dump_descriptor(le_characteristic_descriptor_t * descriptor){
}
static void dump_characteristic_value(le_characteristic_value_event_t * event){
printf(" *** found characteristic value of lenght %d *** ", event->characteristic_value_blob_length);
printf(" *** found characteristic value of length %d *** ", event->characteristic_value_blob_length);
int i;
for (i = 0; i < event->characteristic_value_blob_length; i++){
printf("%02x ", event->characteristic_value[i]);

14
example/libusb/ble_client.h
View File

@ -99,6 +99,12 @@ typedef enum {
P_W2_SEND_READ_LONG_CHARACTERISTIC_VALUE_QUERY,
P_W4_READ_LONG_CHARACTERISTIC_VALUE_RESULT,
P_W2_SEND_WRITE_CHARACTERISTIC_VALUE_WITHOUT_RESPONSE,
P_W2_SEND_WRITE_CHARACTERISTIC_VALUE,
P_W4_WRITE_CHARACTERISTIC_VALUE_RESULT,
P_W2_SEND_WRITE_LONG_CHARACTERISTIC_VALUE,
P_W4_WRITE_LONG_CHARACTERISTIC_VALUE_RESULT,
P_W2_CANCEL_CONNECT,
P_W4_CONNECT_CANCELLED,
P_W2_DISCONNECT,
@ -110,6 +116,7 @@ typedef enum {
BLE_PERIPHERAL_IN_WRONG_STATE,
BLE_PERIPHERAL_DIFFERENT_CONTEXT_FOR_ADDRESS_ALREADY_EXISTS,
BLE_PERIPHERAL_NOT_CONNECTED,
BLE_VALUE_TOO_LONG,
BLE_PERIPHERAL_BUSY
} le_command_status_t;
@ -137,6 +144,8 @@ typedef struct le_peripheral{
uint16_t characteristic_start_handle;
uint16_t characteristic_value_handle;
uint16_t characteristic_value_offset;
uint16_t characteristic_value_length;
uint8_t * data;
uint8_t filter_with_uuid;
@ -245,11 +254,14 @@ le_command_status_t le_central_discover_characteristic_descriptors(le_peripheral
le_command_status_t le_central_read_value_of_characteristic(le_peripheral_t *context, le_characteristic_t *characteristic);
le_command_status_t le_central_read_value_of_characteristic_using_value_handle(le_peripheral_t *context, uint16_t characteristic_value_handle);
// Reads long caharacteristic value.
le_command_status_t le_central_read_long_value_of_characteristic(le_peripheral_t *context, le_characteristic_t *characteristic);
le_command_status_t le_central_read_long_value_of_characteristic_using_value_handle(le_peripheral_t *context, uint16_t characteristic_value_handle);
le_command_status_t le_central_write_value_of_characteristic(le_peripheral_t *context, uint16_t characteristic_handle, int length, uint8_t * data);
le_command_status_t le_central_write_value_of_characteristic_without_response(le_peripheral_t *context, uint16_t characteristic_handle, uint16_t length, uint8_t * data);
le_command_status_t le_central_write_value_of_characteristic(le_peripheral_t *context, uint16_t characteristic_handle, uint16_t length, uint8_t * data);
le_command_status_t le_central_subscribe_to_characteristic(le_peripheral_t *context, uint16_t characteristic_handle);
le_command_status_t le_central_unsubscribe_from_characteristic(le_peripheral_t *context, uint16_t characteristic_handle);
// { read/write/subscribe/unsubscribe confirm/result}

6
include/btstack/hci_cmds.h
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@ -235,9 +235,13 @@ extern "C" {
#define GATT_CHARACTERISTIC_VALUE_QUERY_RESULT 0xAA
#define GATT_LONG_CHARACTERISTIC_VALUE_QUERY_RESULT 0xAB
#define GATT_LONG_CHARACTERISTIC_VALUE_QUERY_COMPLETE 0xAC
#define GATT_CHARACTERISTIC_VALUE_WRITE_RESPONSE 0xAD
#define GATT_LONG_CHARACTERISTIC_VALUE_WRITE_RESPONSE 0xAE
#define GATT_LONG_CHARACTERISTIC_VALUE_WRITE_COMPLETE 0xAF
// data: event(8), len(8), status (8), hci_handle (16), attribute_handle (16)
#define ATT_HANDLE_VALUE_INDICATION_COMPLETE 0xAF
#define ATT_HANDLE_VALUE_INDICATION_COMPLETE 0xBF
// data: event(8), address_type(8), address (48), [number(32)]
#define SM_JUST_WORKS_REQUEST 0xb0