/*
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* Copyright Cypress Semiconductor Corporation, 2014-2015 All rights reserved.
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*
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* This software, associated documentation and materials ("Software") is
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* owned by Cypress Semiconductor Corporation ("Cypress") and is
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* protected by and subject to worldwide patent protection (UnitedStates and foreign), United States copyright laws and international
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* treaty provisions. Therefore, unless otherwise specified in a separate license agreement between you and Cypress, this Software
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* must be treated like any other copyrighted material. Reproduction,
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* modification, translation, compilation, or representation of this
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* Software in any other form (e.g., paper, magnetic, optical, silicon)
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* is prohibited without Cypress's express written permission.
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*
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* Disclaimer: THIS SOFTWARE IS PROVIDED AS-IS, WITH NO WARRANTY OF ANY
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* KIND, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
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* NONINFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE. Cypress reserves the right to make changes
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* to the Software without notice. Cypress does not assume any liability
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* arising out of the application or use of Software or any product or
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* circuit described in the Software. Cypress does not authorize its
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* products for use as critical components in any products where a
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* malfunction or failure may reasonably be expected to result in
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* significant injury or death ("High Risk Product"). By including
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* Cypress's product in a High Risk Product, the manufacturer of such
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* system or application assumes all risk of such use and in doing so
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* indemnifies Cypress against all liability.
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*
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* Use of this Software may be limited by and subject to the applicable
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* Cypress software license agreement.
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*
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*
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*/
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#import "BPModel.h"
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#import "CBMoralManager.h"
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#import "Constants.h"
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/*!
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* @class BPModel
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*
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* @discussion Class to handle the blood pressure service related operations
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*
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*/
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@interface BPModel ()<cbCharacteristicManagerDelegate>
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{
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void(^cbCharacteristicHandler)(BOOL success, NSError *error);
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void(^cbcharacteristicDiscoverHandler)(BOOL success, NSError *error);
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CBCharacteristic *bpCharacteristic;
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}
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@end
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@implementation BPModel
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/*!
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* @method startDiscoverChar:
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*
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* @discussion Discovers the specified characteristics of a service..
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*/
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-(void)startDiscoverChar:(void (^) (BOOL success, NSError *error))handler
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{
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cbcharacteristicDiscoverHandler = handler;
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[[CBMoralManager sharedManager] setCbCharacteristicDelegate:self];
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[[[CBMoralManager sharedManager] myPeripheral] discoverCharacteristics:nil forService:[[CBMoralManager sharedManager] myService]];
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}
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/*!
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* @method updateCharacteristicWithHandler:
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*
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* @discussion Sets notifications or indications for the value of a specified characteristic.
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*/
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-(void)updateCharacteristicWithHandler:(void (^) (BOOL success, NSError *error))handler
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{
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cbCharacteristicHandler = handler;
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if (bpCharacteristic)
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{
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[Utilities logDataWithService:[ResourceHandler getServiceNameForUUID:BP_SERVICE_UUID] characteristic:[ResourceHandler getCharacteristicNameForUUID:BP_MEASUREMENT_CHARACTERISTIC_UUID] descriptor:nil operation:START_NOTIFY];
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[[[CBMoralManager sharedManager] myPeripheral] setNotifyValue:YES forCharacteristic:bpCharacteristic];
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}
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}
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/*!
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* @method stopUpdate
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*
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* @discussion Stop notifications or indications for the value of a specified characteristic.
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*/
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-(void)stopUpdate
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{
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cbCharacteristicHandler = nil;
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if (bpCharacteristic)
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{
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if (bpCharacteristic.isNotifying)
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{
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[[[CBMoralManager sharedManager] myPeripheral] setNotifyValue:NO forCharacteristic:bpCharacteristic];
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[Utilities logDataWithService:[ResourceHandler getServiceNameForUUID:BP_SERVICE_UUID] characteristic:[ResourceHandler getCharacteristicNameForUUID:BP_MEASUREMENT_CHARACTERISTIC_UUID] descriptor:nil operation:STOP_NOTIFY];
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}
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}
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}
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#pragma mark - characteristicManager delegate
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/*!
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* @method peripheral: didDiscoverCharacteristicsForService: error:
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*
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* @discussion Method invoked when characteristics are discovered for a service
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*
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*/
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-(void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error
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{
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if ([service.UUID isEqual:BP_SERVICE_UUID])
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{
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for (CBCharacteristic *aChar in service.characteristics)
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{
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// Checking for required characteristic
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if ([aChar.UUID isEqual:BP_MEASUREMENT_CHARACTERISTIC_UUID])
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{
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bpCharacteristic = aChar;
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cbcharacteristicDiscoverHandler(YES,nil);
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}
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}
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}
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}
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/*!
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* @method peripheral: didUpdateValueForCharacteristic: error:
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*
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* @discussion Method invoked when the characteristic value changes
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*
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*/
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-(void) peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
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{
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if ([characteristic.UUID isEqual:BP_MEASUREMENT_CHARACTERISTIC_UUID])
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{
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if (error == nil)
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{
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[self getBloodPressureDataFromChar:characteristic];
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cbCharacteristicHandler(YES,nil);
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}
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else
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{
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cbCharacteristicHandler(NO,error);
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}
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}
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}
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/*!
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* @method getBloodPressureDataFromChar:
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*
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* @discussion Instance method to get the blood pressure value
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*
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*/
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-(void) getBloodPressureDataFromChar:(CBCharacteristic *)characteristic
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{
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NSData *data = [characteristic value];
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const uint8_t *reportData = (uint8_t *)[data bytes];
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// Checking the flag
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if (!(reportData[0] & 0x00))
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{
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// BP details in units of mmHg
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_bloodPressureUnitString = BLOOD_PRESSURE_UNIT_mmHg;
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}
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else
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{
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//BP details in units of kPa
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_bloodPressureUnitString = BLOOD_PRESSURE_UNIT_kPa;
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}
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_systolicPressureValue = CFSwapInt16LittleToHost(*(uint16_t *) &reportData[1]);
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_diastolicPressureValue = CFSwapInt16LittleToHost(*(uint16_t *) &reportData[3]);
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if (cbCharacteristicHandler != nil) {
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cbCharacteristicHandler(YES,nil);
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}
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[Utilities logDataWithService:[ResourceHandler getServiceNameForUUID:characteristic.service.UUID] characteristic:[ResourceHandler getCharacteristicNameForUUID:characteristic.UUID] descriptor:nil operation:[NSString stringWithFormat:@"%@%@ %@",NOTIFY_RESPONSE,DATA_SEPERATOR,[Utilities convertDataToLoggerFormat:data]]];
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}
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@end
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