2014-07-30 10:36:32 +00:00
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/* mbed Microcontroller Library
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* Copyright (c) 2006-2013 ARM Limited
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "nRF51GattServer.h"
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#include "mbed.h"
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#include "common/common.h"
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#include "btle/custom/custom_helper.h"
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#include "nRF51Gap.h"
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/**************************************************************************/
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/*!
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@brief Adds a new service to the GATT table on the peripheral
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@returns ble_error_t
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@retval BLE_ERROR_NONE
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Everything executed properly
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@section EXAMPLE
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@code
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@endcode
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*/
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/**************************************************************************/
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ble_error_t nRF51GattServer::addService(GattService &service)
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{
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/* ToDo: Make sure we don't overflow the array, etc. */
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/* ToDo: Make sure this service UUID doesn't already exist (?) */
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/* ToDo: Basic validation */
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/* Add the service to the nRF51 */
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ble_uuid_t nordicUUID;
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nordicUUID = custom_convert_to_nordic_uuid(service.getUUID());
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uint16_t serviceHandle;
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ASSERT( ERROR_NONE ==
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sd_ble_gatts_service_add(BLE_GATTS_SRVC_TYPE_PRIMARY,
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&nordicUUID,
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&serviceHandle),
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BLE_ERROR_PARAM_OUT_OF_RANGE );
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service.setHandle(serviceHandle);
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/* Add characteristics to the service */
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for (uint8_t i = 0; i < service.getCharacteristicCount(); i++) {
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GattCharacteristic *p_char = service.getCharacteristic(i);
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2014-09-02 12:35:55 +00:00
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nordicUUID = custom_convert_to_nordic_uuid(p_char->getValueAttribute().getUUID());
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2014-07-30 10:36:32 +00:00
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ASSERT ( ERROR_NONE ==
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2014-09-02 12:34:54 +00:00
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custom_add_in_characteristic(BLE_GATT_HANDLE_INVALID,
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2014-07-30 10:36:32 +00:00
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&nordicUUID,
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p_char->getProperties(),
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2014-09-02 12:35:55 +00:00
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p_char->getValueAttribute().getValuePtr(),
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p_char->getValueAttribute().getInitialLength(),
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p_char->getValueAttribute().getMaxLength(),
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2014-07-30 10:36:32 +00:00
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&nrfCharacteristicHandles[characteristicCount]),
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BLE_ERROR_PARAM_OUT_OF_RANGE );
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/* Update the characteristic handle */
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uint16_t charHandle = characteristicCount;
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p_characteristics[characteristicCount++] = p_char;
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2014-09-02 12:35:55 +00:00
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p_char->getValueAttribute().setHandle(charHandle);
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2014-09-02 12:34:54 +00:00
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/* Add optional descriptors if any */
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/* ToDo: Make sure we don't overflow the array */
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for (uint8_t j = 0; j < p_char->getDescriptorCount(); j++) {
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GattAttribute *p_desc = p_char->getDescriptor(j);
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nordicUUID = custom_convert_to_nordic_uuid(p_desc->getUUID());
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ASSERT ( ERROR_NONE ==
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custom_add_in_descriptor(BLE_GATT_HANDLE_INVALID,
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&nordicUUID,
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p_desc->getValuePtr(),
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p_desc->getInitialLength(),
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p_desc->getMaxLength(),
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&nrfDescriptorHandles[descriptorCount]),
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BLE_ERROR_PARAM_OUT_OF_RANGE );
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uint16_t descHandle = descriptorCount;
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p_descriptors[descriptorCount++] = p_desc;
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p_desc->setHandle(descHandle);
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2014-07-30 10:36:32 +00:00
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}
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2014-09-02 12:34:54 +00:00
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2014-07-30 10:36:32 +00:00
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}
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serviceCount++;
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return BLE_ERROR_NONE;
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}
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/**************************************************************************/
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/*!
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@brief Reads the value of a characteristic, based on the service
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and characteristic index fields
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@param[in] charHandle
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The handle of the GattCharacteristic to read from
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@param[in] buffer
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Buffer to hold the the characteristic's value
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(raw byte array in LSB format)
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@param[in] len
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The number of bytes read into the buffer
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@returns ble_error_t
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@retval BLE_ERROR_NONE
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Everything executed properly
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@section EXAMPLE
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@code
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@endcode
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*/
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/**************************************************************************/
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ble_error_t nRF51GattServer::readValue(uint16_t charHandle, uint8_t buffer[], uint16_t *const lengthP)
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{
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ASSERT( ERROR_NONE ==
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sd_ble_gatts_value_get(nrfCharacteristicHandles[charHandle].value_handle, 0, lengthP, buffer),
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BLE_ERROR_PARAM_OUT_OF_RANGE);
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return BLE_ERROR_NONE;
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}
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/**************************************************************************/
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/*!
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@brief Updates the value of a characteristic, based on the service
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and characteristic index fields
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@param[in] charHandle
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The handle of the GattCharacteristic to write to
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@param[in] buffer
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Data to use when updating the characteristic's value
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(raw byte array in LSB format)
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@param[in] len
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The number of bytes in buffer
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@returns ble_error_t
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@retval BLE_ERROR_NONE
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Everything executed properly
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@section EXAMPLE
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@code
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@endcode
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*/
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/**************************************************************************/
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ble_error_t nRF51GattServer::updateValue(uint16_t charHandle, uint8_t buffer[], uint16_t len, bool localOnly)
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{
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uint16_t gapConnectionHandle = nRF51Gap::getInstance().getConnectionHandle();
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if (localOnly) {
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/* Only update locally regardless of notify/indicate */
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ASSERT_INT( ERROR_NONE,
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sd_ble_gatts_value_set(nrfCharacteristicHandles[charHandle].value_handle, 0, &len, buffer),
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BLE_ERROR_PARAM_OUT_OF_RANGE );
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return BLE_ERROR_NONE;
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}
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if ((p_characteristics[charHandle]->getProperties() &
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(GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_INDICATE |
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GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY)) &&
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(gapConnectionHandle != BLE_CONN_HANDLE_INVALID)) {
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/* HVX update for the characteristic value */
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ble_gatts_hvx_params_t hvx_params;
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hvx_params.handle = nrfCharacteristicHandles[charHandle].value_handle;
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hvx_params.type =
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(p_characteristics[charHandle]->getProperties() &
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GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY) ?
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BLE_GATT_HVX_NOTIFICATION : BLE_GATT_HVX_INDICATION;
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hvx_params.offset = 0;
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hvx_params.p_data = buffer;
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hvx_params.p_len = &len;
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error_t error = (error_t) sd_ble_gatts_hvx(gapConnectionHandle, &hvx_params);
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/* ERROR_INVALID_STATE, ERROR_BUSY, ERROR_GATTS_SYS_ATTR_MISSING and
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*ERROR_NO_TX_BUFFERS the ATT table has been updated. */
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if ((error != ERROR_NONE) && (error != ERROR_INVALID_STATE) &&
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(error != ERROR_BLE_NO_TX_BUFFERS) && (error != ERROR_BUSY) &&
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(error != ERROR_BLEGATTS_SYS_ATTR_MISSING)) {
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ASSERT_INT( ERROR_NONE,
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sd_ble_gatts_value_set(nrfCharacteristicHandles[charHandle].value_handle, 0, &len, buffer),
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BLE_ERROR_PARAM_OUT_OF_RANGE );
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}
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} else {
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ASSERT_INT( ERROR_NONE,
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sd_ble_gatts_value_set(nrfCharacteristicHandles[charHandle].value_handle, 0, &len, buffer),
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BLE_ERROR_PARAM_OUT_OF_RANGE );
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}
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return BLE_ERROR_NONE;
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}
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ble_error_t nRF51GattServer::setDeviceName(const uint8_t *deviceName)
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{
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ble_gap_conn_sec_mode_t sec_mode;
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BLE_GAP_CONN_SEC_MODE_SET_OPEN(&sec_mode); // no security is needed
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if (sd_ble_gap_device_name_set(&sec_mode, deviceName, strlen((const char *)deviceName)) == NRF_SUCCESS) {
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return BLE_ERROR_NONE;
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} else {
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return BLE_ERROR_PARAM_OUT_OF_RANGE;
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}
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}
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ble_error_t nRF51GattServer::getDeviceName(uint8_t *deviceName, unsigned *lengthP)
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{
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if (sd_ble_gap_device_name_get(deviceName, (uint16_t *)lengthP) == NRF_SUCCESS) {
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return BLE_ERROR_NONE;
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} else {
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return BLE_ERROR_PARAM_OUT_OF_RANGE;
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}
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}
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ble_error_t nRF51GattServer::setAppearance(uint16_t appearance)
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{
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if (sd_ble_gap_appearance_set(appearance) == NRF_SUCCESS) {
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return BLE_ERROR_NONE;
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} else {
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return BLE_ERROR_PARAM_OUT_OF_RANGE;
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}
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}
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ble_error_t nRF51GattServer::getAppearance(uint16_t *appearanceP)
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{
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if (sd_ble_gap_appearance_get(appearanceP)) {
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return BLE_ERROR_NONE;
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} else {
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return BLE_ERROR_PARAM_OUT_OF_RANGE;
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}
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}
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/**************************************************************************/
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/*!
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@brief Callback handler for events getting pushed up from the SD
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*/
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/**************************************************************************/
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void nRF51GattServer::hwCallback(ble_evt_t *p_ble_evt)
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{
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uint16_t handle_value;
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GattServerEvents::gattEvent_t event;
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switch (p_ble_evt->header.evt_id) {
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case BLE_GATTS_EVT_WRITE:
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/* There are 2 use case here: Values being updated & CCCD (indicate/notify) enabled */
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/* 1.) Handle CCCD changes */
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handle_value = p_ble_evt->evt.gatts_evt.params.write.handle;
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for (uint8_t i = 0; i<characteristicCount; i++) {
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if ((p_characteristics[i]->getProperties() & (GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_INDICATE | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY)) &&
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(nrfCharacteristicHandles[i].cccd_handle == handle_value)) {
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uint16_t cccd_value =
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(p_ble_evt->evt.gatts_evt.params.write.data[1] << 8) |
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p_ble_evt->evt.gatts_evt.params.write.data[0]; /* Little Endian but M0 may be mis-aligned */
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if (((p_characteristics[i]->getProperties() & GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_INDICATE) && (cccd_value & BLE_GATT_HVX_INDICATION)) ||
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((p_characteristics[i]->getProperties() & GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY) && (cccd_value & BLE_GATT_HVX_NOTIFICATION))) {
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event = GattServerEvents::GATT_EVENT_UPDATES_ENABLED;
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} else {
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event = GattServerEvents::GATT_EVENT_UPDATES_DISABLED;
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}
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handleEvent(event, i);
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return;
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}
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}
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/* 2.) Changes to the characteristic value will be handled with other events below */
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event = GattServerEvents::GATT_EVENT_DATA_WRITTEN;
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break;
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2014-09-02 12:34:54 +00:00
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case BLE_EVT_TX_COMPLETE:
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for (uint8_t i = 0; i<p_ble_evt->evt.common_evt.params.tx_complete.count; i++){
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handleEvent(GattServerEvents::GATT_EVENT_DATA_SENT);
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}
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2014-07-30 10:36:32 +00:00
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return;
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case BLE_GATTS_EVT_HVC:
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/* Indication confirmation received */
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event = GattServerEvents::GATT_EVENT_CONFIRMATION_RECEIVED;
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handle_value = p_ble_evt->evt.gatts_evt.params.hvc.handle;
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break;
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case BLE_GATTS_EVT_SYS_ATTR_MISSING:
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sd_ble_gatts_sys_attr_set(p_ble_evt->evt.gatts_evt.conn_handle, NULL, 0);
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return;
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default:
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return;
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}
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/* Find index (charHandle) in the pool */
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for (uint8_t i = 0; i<characteristicCount; i++) {
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if (nrfCharacteristicHandles[i].value_handle == handle_value) {
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handleEvent(event, i);
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break;
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}
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}
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}
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