Diff: source/nRF51GattServer.cpp

Revision:

388:db85a09c27ef

Parent:

387:b13ab9a7ddb9

Child:

389:5982ee136c47

--- a/source/nRF51GattServer.cpp	Tue Jul 21 13:23:44 2015 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,457 +0,0 @@
-/* mbed Microcontroller Library
- * Copyright (c) 2006-2013 ARM Limited
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "nRF51GattServer.h"
-#include "mbed.h"
-
-#include "common/common.h"
-#include "btle/custom/custom_helper.h"
-
-#include "nRF51Gap.h"
-
-nRF51GattServer &nRF51GattServer::getInstance(void) {
-    static nRF51GattServer m_instance;
-    return m_instance;
-}
-
-/**************************************************************************/
-/*!
-    @brief  Adds a new service to the GATT table on the peripheral
-
-    @returns    ble_error_t
-
-    @retval     BLE_ERROR_NONE
-                Everything executed properly
-
-    @section EXAMPLE
-
-    @code
-
-    @endcode
-*/
-/**************************************************************************/
-ble_error_t nRF51GattServer::addService(GattService &service)
-{
-    /* ToDo: Make sure we don't overflow the array, etc. */
-    /* ToDo: Make sure this service UUID doesn't already exist (?) */
-    /* ToDo: Basic validation */
-
-    /* Add the service to the nRF51 */
-    ble_uuid_t nordicUUID;
-    nordicUUID = custom_convert_to_nordic_uuid(service.getUUID());
-
-    uint16_t serviceHandle;
-    ASSERT( ERROR_NONE ==
-            sd_ble_gatts_service_add(BLE_GATTS_SRVC_TYPE_PRIMARY,
-                                     &nordicUUID,
-                                     &serviceHandle),
-            BLE_ERROR_PARAM_OUT_OF_RANGE );
-    service.setHandle(serviceHandle);
-
-    /* Add characteristics to the service */
-    for (uint8_t i = 0; i < service.getCharacteristicCount(); i++) {
-        GattCharacteristic *p_char = service.getCharacteristic(i);
-
-        /* Skip any incompletely defined, read-only characteristics. */
-        if ((p_char->getValueAttribute().getValuePtr() == NULL) &&
-            (p_char->getValueAttribute().getInitialLength() == 0) &&
-            (p_char->getProperties() == GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ)) {
-            continue;
-        }
-
-        nordicUUID = custom_convert_to_nordic_uuid(p_char->getValueAttribute().getUUID());
-
-        /* The user-description descriptor is a special case which needs to be
-         * handled at the time of adding the characteristic. The following block
-         * is meant to discover its presence. */
-        const uint8_t *userDescriptionDescriptorValuePtr = NULL;
-        uint16_t userDescriptionDescriptorValueLen = 0;
-        for (uint8_t j = 0; j < p_char->getDescriptorCount(); j++) {
-            GattAttribute *p_desc = p_char->getDescriptor(j);
-            if (p_desc->getUUID() == BLE_UUID_DESCRIPTOR_CHAR_USER_DESC) {
-                userDescriptionDescriptorValuePtr = p_desc->getValuePtr();
-                userDescriptionDescriptorValueLen = p_desc->getLength();
-            }
-        }
-
-        ASSERT ( ERROR_NONE ==
-                 custom_add_in_characteristic(BLE_GATT_HANDLE_INVALID,
-                                              &nordicUUID,
-                                              p_char->getProperties(),
-                                              p_char->getRequiredSecurity(),
-                                              p_char->getValueAttribute().getValuePtr(),
-                                              p_char->getValueAttribute().getInitialLength(),
-                                              p_char->getValueAttribute().getMaxLength(),
-                                              userDescriptionDescriptorValuePtr,
-                                              userDescriptionDescriptorValueLen,
-                                              p_char->isReadAuthorizationEnabled(),
-                                              p_char->isWriteAuthorizationEnabled(),
-                                              &nrfCharacteristicHandles[characteristicCount]),
-                 BLE_ERROR_PARAM_OUT_OF_RANGE );
-
-        /* Update the characteristic handle */
-        p_characteristics[characteristicCount] = p_char;
-        p_char->getValueAttribute().setHandle(nrfCharacteristicHandles[characteristicCount].value_handle);
-        characteristicCount++;
-
-        /* Add optional descriptors if any */
-        /* ToDo: Make sure we don't overflow the array */
-        for (uint8_t j = 0; j < p_char->getDescriptorCount(); j++) {
-            GattAttribute *p_desc = p_char->getDescriptor(j);
-            /* skip the user-description-descriptor here; this has already been handled when adding the characteristic (above). */
-            if (p_desc->getUUID() == BLE_UUID_DESCRIPTOR_CHAR_USER_DESC) {
-                continue;
-            }
-
-            nordicUUID = custom_convert_to_nordic_uuid(p_desc->getUUID());
-
-            ASSERT(ERROR_NONE ==
-                   custom_add_in_descriptor(BLE_GATT_HANDLE_INVALID,
-                                            &nordicUUID,
-                                            p_desc->getValuePtr(),
-                                            p_desc->getInitialLength(),
-                                            p_desc->getMaxLength(),
-                                            &nrfDescriptorHandles[descriptorCount]),
-                BLE_ERROR_PARAM_OUT_OF_RANGE);
-
-            p_descriptors[descriptorCount++] = p_desc;
-            p_desc->setHandle(nrfDescriptorHandles[descriptorCount]);
-        }
-    }
-
-    serviceCount++;
-
-    return BLE_ERROR_NONE;
-}
-
-/**************************************************************************/
-/*!
-    @brief  Reads the value of a characteristic, based on the service
-            and characteristic index fields
-
-    @param[in]  attributeHandle
-                The handle of the GattCharacteristic to read from
-    @param[in]  buffer
-                Buffer to hold the the characteristic's value
-                (raw byte array in LSB format)
-    @param[in/out] len
-                input:  Length in bytes to be read.
-                output: Total length of attribute value upon successful return.
-
-    @returns    ble_error_t
-
-    @retval     BLE_ERROR_NONE
-                Everything executed properly
-*/
-/**************************************************************************/
-ble_error_t nRF51GattServer::read(GattAttribute::Handle_t attributeHandle, uint8_t buffer[], uint16_t *lengthP)
-{
-    return read(BLE_CONN_HANDLE_INVALID, attributeHandle, buffer, lengthP);
-}
-
-ble_error_t nRF51GattServer::read(Gap::Handle_t connectionHandle, GattAttribute::Handle_t attributeHandle, uint8_t buffer[], uint16_t *lengthP)
-{
-    ble_gatts_value_t value = {
-        .len     = *lengthP,
-        .offset  = 0,
-        .p_value = buffer,
-    };
-
-    ASSERT( ERROR_NONE ==
-            sd_ble_gatts_value_get(connectionHandle, attributeHandle, &value),
-            BLE_ERROR_PARAM_OUT_OF_RANGE);
-    *lengthP = value.len;
-
-    return BLE_ERROR_NONE;
-}
-
-/**************************************************************************/
-/*!
-    @brief  Updates the value of a characteristic, based on the service
-            and characteristic index fields
-
-    @param[in]  charHandle
-                The handle of the GattCharacteristic to write to
-    @param[in]  buffer
-                Data to use when updating the characteristic's value
-                (raw byte array in LSB format)
-    @param[in]  len
-                The number of bytes in buffer
-
-    @returns    ble_error_t
-
-    @retval     BLE_ERROR_NONE
-                Everything executed properly
-*/
-/**************************************************************************/
-ble_error_t nRF51GattServer::write(GattAttribute::Handle_t attributeHandle, const uint8_t buffer[], uint16_t len, bool localOnly)
-{
-    return write(BLE_CONN_HANDLE_INVALID, attributeHandle, buffer, len, localOnly);
-}
-
-ble_error_t nRF51GattServer::write(Gap::Handle_t connectionHandle, GattAttribute::Handle_t attributeHandle, const uint8_t buffer[], uint16_t len, bool localOnly)
-{
-    uint16_t gapConnectionHandle = nRF51Gap::getInstance().getConnectionHandle();
-    ble_error_t returnValue = BLE_ERROR_NONE;
-
-    ble_gatts_value_t value = {
-        .len     = len,
-        .offset  = 0,
-        .p_value = const_cast<uint8_t *>(buffer),
-    };
-
-    if (localOnly) {
-        /* Only update locally regardless of notify/indicate */
-        ASSERT_INT( ERROR_NONE,
-                    sd_ble_gatts_value_set(connectionHandle, attributeHandle, &value),
-                    BLE_ERROR_PARAM_OUT_OF_RANGE );
-        return BLE_ERROR_NONE;
-    }
-
-    int characteristicIndex = resolveValueHandleToCharIndex(attributeHandle);
-    if ((characteristicIndex != -1) &&
-        (p_characteristics[characteristicIndex]->getProperties() & (GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_INDICATE | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY)) &&
-        (gapConnectionHandle != connectionHandle)) {
-        /* HVX update for the characteristic value */
-        ble_gatts_hvx_params_t hvx_params;
-
-        hvx_params.handle = attributeHandle;
-        hvx_params.type   =
-            (p_characteristics[characteristicIndex]->getProperties() & GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY) ? BLE_GATT_HVX_NOTIFICATION : BLE_GATT_HVX_INDICATION;
-        hvx_params.offset = 0;
-        hvx_params.p_data = const_cast<uint8_t *>(buffer);
-        hvx_params.p_len  = &len;
-
-        error_t error = (error_t) sd_ble_gatts_hvx(gapConnectionHandle, &hvx_params);
-
-        /* ERROR_INVALID_STATE, ERROR_BUSY, ERROR_GATTS_SYS_ATTR_MISSING and ERROR_NO_TX_BUFFERS the ATT table has been updated. */
-        if ((error != ERROR_NONE) && (error != ERROR_INVALID_STATE) && (error != ERROR_BLE_NO_TX_BUFFERS) && (error != ERROR_BUSY) && (error != ERROR_BLEGATTS_SYS_ATTR_MISSING)) {
-            ASSERT_INT( ERROR_NONE,
-                        sd_ble_gatts_value_set(connectionHandle, attributeHandle, &value),
-                        BLE_ERROR_PARAM_OUT_OF_RANGE );
-        }
-
-        /*  Notifications consume application buffers. The return value can
-            be used for resending notifications.
-        */
-        if (error != ERROR_NONE) {
-            returnValue = BLE_STACK_BUSY;
-        }
-    } else {
-        ASSERT_INT( ERROR_NONE,
-                    sd_ble_gatts_value_set(connectionHandle, attributeHandle, &value),
-                    BLE_ERROR_PARAM_OUT_OF_RANGE );
-    }
-
-    return returnValue;
-}
-
-ble_error_t nRF51GattServer::areUpdatesEnabled(const GattCharacteristic &characteristic, bool *enabledP)
-{
-    /* Forward the call with the default connection handle. */
-    return areUpdatesEnabled(nRF51Gap::getInstance().getConnectionHandle(), characteristic, enabledP);
-}
-
-ble_error_t nRF51GattServer::areUpdatesEnabled(Gap::Handle_t connectionHandle, const GattCharacteristic &characteristic, bool *enabledP)
-{
-    int characteristicIndex = resolveValueHandleToCharIndex(characteristic.getValueHandle());
-    if (characteristicIndex == -1) {
-        return BLE_ERROR_INVALID_PARAM;
-    }
-
-    /* Read the cccd value from the GATT server. */
-    GattAttribute::Handle_t cccdHandle = nrfCharacteristicHandles[characteristicIndex].cccd_handle;
-    uint16_t cccdValue;
-    uint16_t length = sizeof(cccdValue);
-    ble_error_t rc = read(connectionHandle, cccdHandle, reinterpret_cast<uint8_t *>(&cccdValue), &length);
-    if (rc != BLE_ERROR_NONE) {
-        return rc;
-    }
-    if (length != sizeof(cccdValue)) {
-        return BLE_ERROR_INVALID_STATE;
-    }
-
-    /* Check for NOTFICATION or INDICATION in CCCD. */
-    if ((cccdValue & BLE_GATT_HVX_NOTIFICATION) || (cccdValue & BLE_GATT_HVX_INDICATION)) {
-        *enabledP = true;
-    }
-
-    return BLE_ERROR_NONE;
-}
-
-/**************************************************************************/
-/*!
-    @brief  Callback handler for events getting pushed up from the SD
-*/
-/**************************************************************************/
-void nRF51GattServer::hwCallback(ble_evt_t *p_ble_evt)
-{
-    GattAttribute::Handle_t        handle_value;
-    GattServerEvents::gattEvent_t  eventType;
-    const ble_gatts_evt_t         *gattsEventP = &p_ble_evt->evt.gatts_evt;
-
-    switch (p_ble_evt->header.evt_id) {
-        case BLE_GATTS_EVT_WRITE: {
-                /* There are 2 use case here: Values being updated & CCCD (indicate/notify) enabled */
-
-                /* 1.) Handle CCCD changes */
-                handle_value = gattsEventP->params.write.handle;
-                int characteristicIndex = resolveCCCDHandleToCharIndex(handle_value);
-                if ((characteristicIndex != -1) &&
-                    (p_characteristics[characteristicIndex]->getProperties() &
-                        (GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_INDICATE | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY))) {
-
-                    uint16_t cccd_value = (gattsEventP->params.write.data[1] << 8) | gattsEventP->params.write.data[0]; /* Little Endian but M0 may be mis-aligned */
-
-                    if (((p_characteristics[characteristicIndex]->getProperties() & GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_INDICATE) && (cccd_value & BLE_GATT_HVX_INDICATION)) ||
-                        ((p_characteristics[characteristicIndex]->getProperties() & GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY) && (cccd_value & BLE_GATT_HVX_NOTIFICATION))) {
-                        eventType = GattServerEvents::GATT_EVENT_UPDATES_ENABLED;
-                    } else {
-                        eventType = GattServerEvents::GATT_EVENT_UPDATES_DISABLED;
-                    }
-
-                    handleEvent(eventType, p_characteristics[characteristicIndex]->getValueHandle());
-                    return;
-                }
-
-                /* 2.) Changes to the characteristic value will be handled with other events below */
-                eventType = GattServerEvents::GATT_EVENT_DATA_WRITTEN;
-            }
-            break;
-
-        case BLE_GATTS_EVT_HVC:
-            /* Indication confirmation received */
-            eventType    = GattServerEvents::GATT_EVENT_CONFIRMATION_RECEIVED;
-            handle_value = gattsEventP->params.hvc.handle;
-            break;
-
-        case BLE_EVT_TX_COMPLETE: {
-            handleDataSentEvent(p_ble_evt->evt.common_evt.params.tx_complete.count);
-            return;
-        }
-
-        case BLE_GATTS_EVT_SYS_ATTR_MISSING:
-            sd_ble_gatts_sys_attr_set(gattsEventP->conn_handle, NULL, 0, 0);
-            return;
-
-        case BLE_GATTS_EVT_RW_AUTHORIZE_REQUEST:
-            switch (gattsEventP->params.authorize_request.type) {
-                case BLE_GATTS_AUTHORIZE_TYPE_READ:
-                    eventType    = GattServerEvents::GATT_EVENT_READ_AUTHORIZATION_REQ;
-                    handle_value = gattsEventP->params.authorize_request.request.read.handle;
-                    break;
-                case BLE_GATTS_AUTHORIZE_TYPE_WRITE:
-                    eventType    = GattServerEvents::GATT_EVENT_WRITE_AUTHORIZATION_REQ;
-                    handle_value = gattsEventP->params.authorize_request.request.write.handle;
-                    break;
-                default:
-                    return;
-            }
-            break;
-
-        default:
-            return;
-    }
-
-    int characteristicIndex = resolveValueHandleToCharIndex(handle_value);
-    if (characteristicIndex == -1) {
-        return;
-    }
-
-    /* Find index (charHandle) in the pool */
-    switch (eventType) {
-        case GattServerEvents::GATT_EVENT_DATA_WRITTEN: {
-            GattWriteCallbackParams cbParams = {
-                .handle  = handle_value,
-                .writeOp = static_cast<GattWriteCallbackParams::WriteOp_t>(gattsEventP->params.write.op),
-                .offset  = gattsEventP->params.write.offset,
-                .len     = gattsEventP->params.write.len,
-                .data    = gattsEventP->params.write.data
-            };
-            handleDataWrittenEvent(&cbParams);
-            break;
-        }
-        case GattServerEvents::GATT_EVENT_WRITE_AUTHORIZATION_REQ: {
-            GattWriteAuthCallbackParams cbParams = {
-                .handle  = handle_value,
-                .offset  = gattsEventP->params.authorize_request.request.write.offset,
-                .len     = gattsEventP->params.authorize_request.request.write.len,
-                .data    = gattsEventP->params.authorize_request.request.write.data,
-            };
-            ble_gatts_rw_authorize_reply_params_t reply = {
-                .type = BLE_GATTS_AUTHORIZE_TYPE_WRITE,
-                .params = {
-                    .write = {
-                        .gatt_status = p_characteristics[characteristicIndex]->authorizeWrite(&cbParams)
-                    }
-                }
-            };
-            sd_ble_gatts_rw_authorize_reply(gattsEventP->conn_handle, &reply);
-
-            /*
-             * If write-authorization is enabled for a characteristic,
-             * AUTHORIZATION_REQ event (if replied with true) is *not*
-             * followed by another DATA_WRITTEN event; so we still need
-             * to invoke handleDataWritten(), much the same as we would
-             * have done if write-authorization had not been enabled.
-             */
-            if (reply.params.write.gatt_status == BLE_GATT_STATUS_SUCCESS) {
-                GattWriteCallbackParams cbParams = {
-                    .handle  = handle_value,
-                    .writeOp = static_cast<GattWriteCallbackParams::WriteOp_t>(gattsEventP->params.authorize_request.request.write.op),
-                    .offset  = gattsEventP->params.authorize_request.request.write.offset,
-                    .len     = gattsEventP->params.authorize_request.request.write.len,
-                    .data    = gattsEventP->params.authorize_request.request.write.data,
-                };
-                handleDataWrittenEvent(&cbParams);
-            }
-            break;
-        }
-        case GattServerEvents::GATT_EVENT_READ_AUTHORIZATION_REQ: {
-            GattReadAuthCallbackParams cbParams = {
-                .handle = handle_value,
-                .offset = gattsEventP->params.authorize_request.request.read.offset,
-                .len    = 0,
-                .data   = NULL
-            };
-
-            ble_gatts_rw_authorize_reply_params_t reply = {
-                .type = BLE_GATTS_AUTHORIZE_TYPE_READ,
-                .params = {
-                    .read = {
-                        .gatt_status = p_characteristics[characteristicIndex]->authorizeRead(&cbParams)
-                    }
-                }
-            };
-
-            if (cbParams.authorizationReply == BLE_GATT_STATUS_SUCCESS) {
-                if (cbParams.data != NULL) {
-                    reply.params.read.update = 1;
-                    reply.params.read.offset = cbParams.offset;
-                    reply.params.read.len    = cbParams.len;
-                    reply.params.read.p_data = cbParams.data;
-                }
-            }
-
-            sd_ble_gatts_rw_authorize_reply(gattsEventP->conn_handle, &reply);
-            break;
-        }
-
-        default:
-            handleEvent(eventType, handle_value);
-            break;
-    }
-}
\ No newline at end of file