Diff: BlueNRGGattServer.cpp

Revision:

0:a948f5f3904c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/BlueNRGGattServer.cpp	Fri Dec 19 18:56:07 2014 +0000
@@ -0,0 +1,329 @@
+/* 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 "BlueNRGGattServer.h"
+#include "mbed.h"
+#include "BlueNRGGap.h"
+#include "Utils.h"
+
+/**************************************************************************/
+/*!
+    @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 BlueNRGGattServer::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 */
+    
+    tBleStatus ret;
+    uint8_t type;
+    uint16_t short_uuid;
+    uint8_t primary_short_uuid[2];
+    uint8_t primary_base_uuid[16];
+    uint8_t char_base_uuid[16];
+    const uint8_t *base_uuid;
+    const uint8_t *base_char_uuid;
+    
+    type = (service.getUUID()).shortOrLong();
+    DEBUG("AddService(): Type:%d\n\r", type);
+    
+    /* Add the service to the BlueNRG */
+    short_uuid = (service.getUUID()).getShortUUID();
+    STORE_LE_16(primary_short_uuid, short_uuid);
+    
+    if(type==UUID::UUID_TYPE_LONG) {
+        base_uuid = (service.getUUID()).getBaseUUID();   
+        
+        COPY_UUID_128(primary_base_uuid, base_uuid[15],base_uuid[14],base_uuid[13],base_uuid[12],base_uuid[11],base_uuid[10],base_uuid[9],
+        base_uuid[8],base_uuid[7],base_uuid[6],base_uuid[5],base_uuid[4],primary_short_uuid[1],primary_short_uuid[0],base_uuid[1],base_uuid[0]);
+    }
+    
+    if(type==UUID::UUID_TYPE_SHORT) {
+        ret = aci_gatt_add_serv(UUID_TYPE_16, primary_short_uuid, PRIMARY_SERVICE, 7, 
+        &servHandle);
+    }
+    else if(type==UUID::UUID_TYPE_LONG) {
+        ret = aci_gatt_add_serv(UUID_TYPE_128, primary_base_uuid, PRIMARY_SERVICE, 7, 
+        &servHandle);
+    }
+    
+    service.setHandle(servHandle);
+    //serviceHandleVector.push_back(servHandle);
+    DEBUG("added servHandle handle =%u\n\r", servHandle);
+    tHalUint16 bleCharacteristic;
+    
+    //iterate to include all characteristics
+    for (uint8_t i = 0; i < service.getCharacteristicCount(); i++) {
+        GattCharacteristic *p_char = service.getCharacteristic(i);
+        uint16_t char_uuid = (p_char->getValueAttribute().getUUID()).getShortUUID();   
+        
+        uint8_t int_8_uuid[2];
+        STORE_LE_16(int_8_uuid, char_uuid);
+        
+        if(type==UUID::UUID_TYPE_LONG) {
+            base_char_uuid = (p_char->getValueAttribute().getUUID()).getBaseUUID();
+            
+            COPY_UUID_128(char_base_uuid, base_char_uuid[15],base_char_uuid[14],base_char_uuid[13],base_char_uuid[12],base_char_uuid[11],base_char_uuid[10],base_char_uuid[9],
+            base_char_uuid[8],base_char_uuid[7],base_char_uuid[6],base_char_uuid[5],base_char_uuid[4],int_8_uuid[1],int_8_uuid[0],base_char_uuid[1],base_char_uuid[0]);
+        }
+        
+        DEBUG("Char Properties 0x%x\n\r", p_char->getProperties());
+        /*
+        * Gatt_Evt_Mask -> HardCoded (0)
+        * Encryption_Key_Size -> Hardcoded (16)
+        * isVariable (variable length value field) -> Hardcoded (1)
+        */
+        tGattServerEvent Gatt_Evt_Mask = 0x0;
+        
+        if((p_char->getProperties() &
+                    (GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE_WITHOUT_RESPONSE|
+                        GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE))) {
+            DEBUG("Setting up Gatt GATT_SERVER_ATTR_WRITE Mask\n\r");
+            Gatt_Evt_Mask = Gatt_Evt_Mask | GATT_SERVER_ATTR_WRITE;
+        }
+        if((p_char->getProperties() &
+                    (GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ|
+                        GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY| GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_INDICATE))) {
+            DEBUG("Setting up Gatt GATT_INTIMATE_APPL_WHEN_READ_N_WAIT Mask\n\r");
+            Gatt_Evt_Mask = Gatt_Evt_Mask | GATT_INTIMATE_APPL_WHEN_READ_N_WAIT; 
+        }    //This will support also GATT_SERVER_ATTR_READ_WRITE since it will be covered by previous if() check.
+        
+        if(type==UUID::UUID_TYPE_SHORT) {
+            ret =  aci_gatt_add_char(service.getHandle(), UUID_TYPE_16, int_8_uuid, p_char->getValueAttribute().getMaxLength() /*2*/ /*Value Length*/,
+            p_char->getProperties(), ATTR_PERMISSION_NONE, Gatt_Evt_Mask /*Gatt_Evt_Mask*/,
+            16 /*Encryption_Key_Size*/, 1 /*isVariable*/, &bleCharacteristic);
+        }
+        else if(type==UUID::UUID_TYPE_LONG) {
+            ret =  aci_gatt_add_char(service.getHandle(), UUID_TYPE_128, char_base_uuid, p_char->getValueAttribute().getMaxLength() /*2*/ /*Value Length*/,
+            p_char->getProperties(), ATTR_PERMISSION_NONE, Gatt_Evt_Mask /*Gatt_Evt_Mask*/,
+            16 /*Encryption_Key_Size*/, 1 /*isVariable*/, &bleCharacteristic);
+        }
+        /* Update the characteristic handle */
+        uint16_t charHandle = characteristicCount;   
+        
+        bleCharHanldeMap.insert(std::pair<tHalUint16, tHalUint16>(bleCharacteristic, servHandle)); 
+        
+        p_characteristics[characteristicCount++] = p_char;
+        p_char->getValueAttribute().setHandle(bleCharacteristic);    //Set the characteristic count as the corresponding char handle
+        DEBUG("added bleCharacteristic handle =%u\n\r", bleCharacteristic);
+        
+        if ((p_char->getValueAttribute().getValuePtr() != NULL) && (p_char->getValueAttribute().getInitialLength() > 0)) {
+            updateValue(p_char->getValueAttribute().getHandle(), p_char->getValueAttribute().getValuePtr(), p_char->getValueAttribute().getInitialLength(), false /* localOnly */);
+        }
+        
+        // add descriptors now
+        uint16_t descHandle = 0;
+        for(uint8_t descIndex=0; descIndex<p_char->getDescriptorCount(); descIndex++) {
+            GattAttribute *descriptor = p_char->getDescriptor(descIndex);
+            uint16_t shortUUID = descriptor->getUUID().getShortUUID();
+            const tHalUint8 uuidArray[] = {(shortUUID>>8)&0xFF, (shortUUID&0xFF)};
+            ret = aci_gatt_add_char_desc(service.getHandle(), p_char->getValueAttribute().getHandle(), 
+            CHAR_DESC_TYPE_16_BIT, uuidArray, descriptor->getMaxLength(), descriptor->getInitialLength(), 
+            descriptor->getValuePtr(), CHAR_DESC_SECURITY_PERMISSION, CHAR_DESC_ACCESS_PERMISSION, GATT_SERVER_ATTR_READ_WRITE,
+            MIN_ENCRY_KEY_SIZE, CHAR_ATTRIBUTE_LEN_IS_FIXED, &descHandle);
+            if(ret==(tBleStatus)0) {
+                DEBUG("Descriptor added successfully, descriptor handle=%d\n\r", descHandle);
+                descriptor->setHandle(descHandle);
+            }
+        }
+    }    
+    
+    serviceCount++;
+    
+    //FIXME: There is no GattService pointer array in GattServer. 
+    //        There should be one? (Only the user is aware of GattServices!) Report to forum.
+    
+    return BLE_ERROR_NONE;
+}
+
+/**************************************************************************/
+/*!
+    @brief  Reads the value of a characteristic, based on the service
+            and characteristic index fields
+
+    @param[in]  charHandle
+                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]  len
+                The number of bytes read into the buffer
+
+    @returns    ble_error_t
+
+    @retval     BLE_ERROR_NONE
+                Everything executed properly
+
+    @section EXAMPLE
+
+    @code
+
+    @endcode
+*/
+/**************************************************************************/
+ble_error_t BlueNRGGattServer::readValue(uint16_t charHandle, uint8_t buffer[], uint16_t *const lengthP)
+{
+    DEBUG("ReadValue() Not Supported\n\r");
+    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
+
+    @section EXAMPLE
+
+    @code
+
+    @endcode
+*/
+/**************************************************************************/
+ble_error_t BlueNRGGattServer::updateValue(uint16_t charHandle, uint8_t buffer[], uint16_t len, bool localOnly)
+{
+    tBleStatus ret;    
+    tHalUint8 buff[2];
+
+    DEBUG("updating bleCharacteristic charHandle =%u, corresponding serviceHanle= %u\n\r", charHandle, bleCharHanldeMap.find(charHandle)->second);  
+   
+    ret = aci_gatt_update_char_value(bleCharHanldeMap.find(charHandle)->second, charHandle, 0, len, buffer);
+
+    if (ret != BLE_STATUS_SUCCESS){
+        DEBUG("Error while updating characteristic.\n\r") ;
+        return BLE_ERROR_PARAM_OUT_OF_RANGE ; //Not correct Error Value 
+        //FIXME: Define Error values equivalent to BlueNRG Error Codes.
+    }
+
+    //Generate Data Sent Event Here? (GattServerEvents::GATT_EVENT_DATA_SENT)  //FIXME: Is this correct?
+    //Check if characteristic property is NOTIFY|INDICATE, if yes generate event
+    GattCharacteristic *p_char = BlueNRGGattServer::getInstance().getCharacteristicFromHandle(charHandle);
+    if(p_char->getProperties() &  (GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY
+                | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_INDICATE)) {
+        BlueNRGGattServer::getInstance().handleEvent(GattServerEvents::GATT_EVENT_DATA_SENT, charHandle);
+    }
+
+    return BLE_ERROR_NONE;
+}
+
+/**************************************************************************/
+/*!
+    @brief  Reads a value according to the handle provided
+
+    @param[in]  charHandle
+                The handle of the GattCharacteristic to read from
+
+    @returns    ble_error_t
+
+    @retval     BLE_ERROR_NONE
+                Everything executed properly
+
+    @section EXAMPLE
+
+    @code
+
+    @endcode
+*/
+/**************************************************************************/
+ble_error_t BlueNRGGattServer::Read_Request_CB(tHalUint16 handle)
+{
+    //signed short refvalue;
+    uint16_t gapConnectionHandle = BlueNRGGap::getInstance().getConnectionHandle();
+    
+    //EXIT:
+    if(gapConnectionHandle != 0)
+    aci_gatt_allow_read(gapConnectionHandle);
+}
+
+/**************************************************************************/
+/*!
+    @brief  Returns the GattCharacteristic according to the handle provided
+
+    @param[in]  charHandle
+                The handle of the GattCharacteristic
+
+    @returns    ble_error_t
+
+    @retval     BLE_ERROR_NONE
+                Everything executed properly
+
+    @section EXAMPLE
+
+    @code
+
+    @endcode
+*/
+/**************************************************************************/
+GattCharacteristic* BlueNRGGattServer::getCharacteristicFromHandle(tHalUint16 attrHandle)
+{
+    GattCharacteristic *p_char = NULL;
+    int i;
+    uint16_t handle;
+
+    //DEBUG("BlueNRGGattServer::getCharacteristicFromHandle()>>Attribute Handle received 0x%x\n\r",attrHandle);
+    for(i=0; i<characteristicCount; i++)
+    {
+        handle = p_characteristics[i]->getValueAttribute().getHandle();
+        
+        if(i==characteristicCount-1)//Last Characteristic check
+        {
+            if(attrHandle>=bleCharacteristicHandles[handle])
+            {
+                p_char = p_characteristics[i];
+                DEBUG("Found Characteristic Properties 0x%x\n\r",p_char->getProperties());
+                break;
+            }            
+        }
+        else {
+            //Testing if attribute handle is between two Characteristic Handles
+            if(attrHandle>=bleCharacteristicHandles[handle] && attrHandle<bleCharacteristicHandles[handle+1])
+            {
+                p_char = p_characteristics[i];
+                //DEBUG("Found Characteristic Properties 0x%x\n\r",p_char->getProperties());
+                break;
+            } else continue;
+        }
+    }
+
+    return p_char;
+}
+
+