BlueNRGGattServer.cpp

00001 /* mbed Microcontroller Library
00002  * Copyright (c) 2006-2013 ARM Limited
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *     http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 
00017 #include "BlueNRGGattServer.h"
00018 #include "mbed.h"
00019 #include "BlueNRGGap.h"
00020 
00021 #define STORE_LE_16(buf, val)    ( ((buf)[0] =  (tHalUint8) (val)    ) , \
00022                                    ((buf)[1] =  (tHalUint8) (val>>8) ) )
00023 
00024 #define STORE_LE_32(buf, val)    ( ((buf)[0] =  (tHalUint8) (val)     ) , \
00025                                    ((buf)[1] =  (tHalUint8) (val>>8)  ) , \
00026                                    ((buf)[2] =  (tHalUint8) (val>>16) ) , \
00027                                    ((buf)[3] =  (tHalUint8) (val>>24) ) ) 
00028                                    
00029 /**************************************************************************/
00030 /*!
00031     @brief  Adds a new service to the GATT table on the peripheral
00032 
00033     @returns    ble_error_t
00034 
00035     @retval     BLE_ERROR_NONE
00036                 Everything executed properly
00037 
00038     @section EXAMPLE
00039 
00040     @code
00041 
00042     @endcode
00043 */
00044 /**************************************************************************/
00045 ble_error_t BlueNRGGattServer::addService(GattService &service)
00046 {
00047     /* ToDo: Make sure we don't overflow the array, etc. */
00048     /* ToDo: Make sure this service UUID doesn't already exist (?) */
00049     /* ToDo: Basic validation */
00050     
00051     tBleStatus ret;
00052     
00053     
00054     /* Add the service to the BlueNRG */
00055     uint16_t primary_uuid = (service.getUUID()).getShortUUID();
00056     
00057     ret = aci_gatt_add_serv(UUID_TYPE_16, (const uint8_t*)primary_uuid, PRIMARY_SERVICE, 7, 
00058                             &hrmServHandle);
00059     service.setHandle(hrmServHandle);
00060     
00061     GattCharacteristic *p_char = service.getCharacteristic(0);
00062     uint16_t char_uuid = (p_char->getUUID()).getShortUUID();
00063     ret =  aci_gatt_add_char(service.getHandle(), UUID_TYPE_16, (const uint8_t*)char_uuid, 1,
00064                            CHAR_PROP_NOTIFY, ATTR_PERMISSION_NONE, 0,
00065                            16, 0, &hrmCharHandle);
00066     
00067     p_characteristics[characteristicCount++] = p_char;
00068     p_char->setHandle(hrmCharHandle);                       
00069     serviceCount++;
00070                
00071     if ((p_char->getValuePtr() != NULL) && (p_char->getInitialLength() > 0)) {
00072             updateValue(hrmCharHandle, p_char->getValuePtr(), p_char->getInitialLength(), false /* localOnly */);
00073         }
00074                     
00075     return BLE_ERROR_NONE;
00076 }
00077 
00078 /**************************************************************************/
00079 /*!
00080     @brief  Reads the value of a characteristic, based on the service
00081             and characteristic index fields
00082 
00083     @param[in]  charHandle
00084                 The handle of the GattCharacteristic to read from
00085     @param[in]  buffer
00086                 Buffer to hold the the characteristic's value
00087                 (raw byte array in LSB format)
00088     @param[in]  len
00089                 The number of bytes read into the buffer
00090 
00091     @returns    ble_error_t
00092 
00093     @retval     BLE_ERROR_NONE
00094                 Everything executed properly
00095 
00096     @section EXAMPLE
00097 
00098     @code
00099 
00100     @endcode
00101 */
00102 /**************************************************************************/
00103 ble_error_t BlueNRGGattServer::readValue(uint16_t charHandle, uint8_t buffer[], uint16_t *const lengthP)
00104 {
00105     
00106     return BLE_ERROR_NONE;
00107 }
00108 
00109 /**************************************************************************/
00110 /*!
00111     @brief  Updates the value of a characteristic, based on the service
00112             and characteristic index fields
00113 
00114     @param[in]  charHandle
00115                 The handle of the GattCharacteristic to write to
00116     @param[in]  buffer
00117                 Data to use when updating the characteristic's value
00118                 (raw byte array in LSB format)
00119     @param[in]  len
00120                 The number of bytes in buffer
00121 
00122     @returns    ble_error_t
00123 
00124     @retval     BLE_ERROR_NONE
00125                 Everything executed properly
00126 
00127     @section EXAMPLE
00128 
00129     @code
00130 
00131     @endcode
00132 */
00133 /**************************************************************************/
00134 ble_error_t BlueNRGGattServer::updateValue(uint16_t charHandle, uint8_t buffer[], uint16_t len, bool localOnly)
00135 {
00136     tBleStatus ret;    
00137   tHalUint8 buff[6];
00138     
00139   STORE_LE_16(buff,125);
00140   STORE_LE_16(buff+2,145);
00141   STORE_LE_16(buff+4,543);
00142     
00143   ret = aci_gatt_update_char_value(hrmServHandle, charHandle, 0, 6, buff);
00144 
00145     return BLE_ERROR_NONE;
00146 }