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Add bluetooth example.

This commit is contained in:
Greg 2019-05-02 14:17:11 -04:00
parent 758ea40679
commit c5a523a8b8
5 changed files with 444 additions and 0 deletions
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2
.gitignore vendored
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@ -2,6 +2,8 @@ clast
ast.txt
*.ast
program
examples/bluetooth/bluetooth
examples/bluetooth/ble/main.go
examples/foundation/foundation
examples/foundation/ns
examples/simple/simple

23
examples/bluetooth/ble/ble_delegate.h Normal file
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#import <CoreBluetooth/CoreBluetooth.h>
@interface ble_delegate : NSObject <CBCentralManagerDelegate, CBPeripheralDelegate>
{
CBCentralManager *manager;
CBPeripheral *peripheral;
BOOL wantScan;
BOOL autoConnect;
void (*scanCallback)(void* p);
dispatch_queue_t q;
CBUUID *looking_for;
}
- (ble_delegate*) init;
- (void) scanFor:(CBUUID*)uuid;
- (void) stopScan;
- (BOOL) isLECapableHardware;
@end

358
examples/bluetooth/ble/ble_delegate.m Normal file
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#import "ble_delegate.h"
@implementation ble_delegate
- (ble_delegate*) init
{
[super init];
NSLog(@"Initializing manager");
q = dispatch_queue_create("st.wow.gitlab.ble",NULL);
[q retain];
manager = [[CBCentralManager alloc] initWithDelegate:self queue:q];
return self;
}
- (void) dealloc
{
[self stopScan];
[peripheral setDelegate:nil];
[peripheral release];
[manager release];
[super dealloc];
}
#pragma mark - Start/Stop Scan methods
/*
Request CBCentralManager to scan for heart rate peripherals using service UUID 0x180D
*/
- (void) scanFor:(CBUUID*)uuid
{
autoConnect = TRUE;
[self _scanFor:uuid];
}
- (void) _scanFor:(CBUUID*)uuid
{
if (uuid != nil) {
if (looking_for != nil) {
[looking_for release];
}
looking_for = uuid;
}
if (looking_for == nil) {
NSLog(@"No scan target specified");
return;
}
if (![self isLECapableHardware]) {
NSLog(@"Not LE capable hardware");
NSLog(@"Setting wantScan to true");
wantScan = true;
return;
} else {
NSLog(@"Is LE capable hardware");
}
NSLog(@"Scanning");
[manager scanForPeripheralsWithServices:[NSArray arrayWithObject:looking_for] options:nil];
}
/*
Request CBCentralManager to stop scanning for heart rate peripherals
*/
- (void) stopScan
{
[manager stopScan];
scanCallback(nil);
}
#pragma mark - CBCentralManager delegate methods
/*
Invoked whenever the central manager's state is updated.
*/
- (void) centralManagerDidUpdateState:(CBCentralManager *)central
{
NSLog(@"State changed");
if ([self isLECapableHardware] && wantScan) {
NSLog(@"Starting scan?");
[self _scanFor:nil];
}
}
- (BOOL) isLECapableHardware
{
NSString * state = nil;
switch ([manager state])
{
case CBManagerStateUnsupported:
NSLog(@"--unsupported");
state = @"The platform/hardware doesn't support Bluetooth Low Energy.";
break;
case CBManagerStateUnauthorized:
NSLog(@"--unauthorized");
state = @"The app is not authorized to use Bluetooth Low Energy.";
break;
case CBManagerStatePoweredOff:
NSLog(@"--powered off");
state = @"Bluetooth is currently powered off.";
break;
case CBManagerStatePoweredOn:
NSLog(@"--powered on");
return TRUE;
case CBManagerStateResetting:
NSLog(@"--resetting");
return FALSE;
case CBManagerStateUnknown:
NSLog(@"--unknown");
state = @"Bluetooth state is unknown.";
}
NSLog(@"Central manager state: %@", state);
return FALSE;
}
/*
Invoked when the central discovers a peripheral while scanning.
*/
- (void) centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)aPeripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI
{
NSLog(@"Found peripheral");
peripheral = aPeripheral;
[peripheral retain];
if (autoConnect) {
[self stopScan];
printf("Connecting\n");
[manager connectPeripheral:aPeripheral options:[NSDictionary dictionaryWithObject:[NSNumber numberWithBool:YES] forKey:CBConnectPeripheralOptionNotifyOnDisconnectionKey]];
} else {
scanCallback(aPeripheral);
}
}
/*
Invoked when the central manager retrieves the list of known peripherals.
Automatically connect to first known peripheral
*/
- (void)centralManager:(CBCentralManager *)central didRetrievePeripherals:(NSArray *)peripherals
{
NSLog(@"Retrieved peripheral: %lu - %@", [peripherals count], peripherals);
[self stopScan];
/* If there are any known devices, automatically connect to it.*/
if([peripherals count] >=1)
{
peripheral = [peripherals objectAtIndex:0];
[peripheral retain];
printf("Connecting\n");
[manager connectPeripheral:peripheral options:[NSDictionary dictionaryWithObject:[NSNumber numberWithBool:YES] forKey:CBConnectPeripheralOptionNotifyOnDisconnectionKey]];
}
}
/*
Invoked whenever a connection is succesfully created with the peripheral.
Discover available services on the peripheral
*/
- (void) centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)aPeripheral
{
NSLog(@"Connected");
[aPeripheral setDelegate:self];
[aPeripheral discoverServices:nil];
}
/*
Invoked whenever an existing connection with the peripheral is torn down.
Reset local variables
*/
- (void)centralManager:(CBCentralManager *)central didDisconnectPeripheral:(CBPeripheral *)aPeripheral error:(NSError *)error
{
if( peripheral )
{
[peripheral setDelegate:nil];
[peripheral release];
peripheral = nil;
}
}
/*
Invoked whenever the central manager fails to create a connection with the peripheral.
*/
- (void)centralManager:(CBCentralManager *)central didFailToConnectPeripheral:(CBPeripheral *)aPeripheral error:(NSError *)error
{
NSLog(@"Fail to connect to peripheral: %@ with error = %@", aPeripheral, [error localizedDescription]);
if( peripheral )
{
[peripheral setDelegate:nil];
[peripheral release];
peripheral = nil;
}
}
#pragma mark - CBPeripheral delegate methods
/*
Invoked upon completion of a -[discoverServices:] request.
Discover available characteristics on interested services
*/
- (void) peripheral:(CBPeripheral *)aPeripheral didDiscoverServices:(NSError *)error
{
NSLog(@"Discovered services");
for (CBService *aService in aPeripheral.services)
{
NSLog(@"Service found with UUID: %@", aService.UUID);
/* Heart Rate Service */
if ([aService.UUID isEqual:[CBUUID UUIDWithString:@"180D"]])
{
NSLog(@"--heart rate service");
[aPeripheral discoverCharacteristics:nil forService:aService];
}
/* Device Information Service */
if ([aService.UUID isEqual:[CBUUID UUIDWithString:@"180A"]])
{
NSLog(@"--device information service");
[aPeripheral discoverCharacteristics:nil forService:aService];
}
/* GAP (Generic Access Profile) for Device Name */
if ( [aService.UUID isEqual:[CBUUID UUIDWithString:@"1800"]] )
{
NSLog(@"--generic access profile");
[aPeripheral discoverCharacteristics:nil forService:aService];
}
}
}
/*
Invoked upon completion of a -[discoverCharacteristics:forService:] request.
Perform appropriate operations on interested characteristics
*/
- (void) peripheral:(CBPeripheral *)aPeripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error
{
NSLog(@"Discovered characteristics");
if ([service.UUID isEqual:[CBUUID UUIDWithString:@"180D"]])
{
for (CBCharacteristic *aChar in service.characteristics)
{
/* Set notification on heart rate measurement */
if ([aChar.UUID isEqual:[CBUUID UUIDWithString:@"2A37"]])
{
[peripheral setNotifyValue:YES forCharacteristic:aChar];
NSLog(@"Found a Heart Rate Measurement Characteristic");
}
/* Read body sensor location */
if ([aChar.UUID isEqual:[CBUUID UUIDWithString:@"2A38"]])
{
[aPeripheral readValueForCharacteristic:aChar];
NSLog(@"Found a Body Sensor Location Characteristic");
}
/* Write heart rate control point */
if ([aChar.UUID isEqual:[CBUUID UUIDWithString:@"2A39"]])
{
uint8_t val = 1;
NSData* valData = [NSData dataWithBytes:(void*)&val length:sizeof(val)];
[aPeripheral writeValue:valData forCharacteristic:aChar type:CBCharacteristicWriteWithResponse];
}
}
}
if ( [service.UUID isEqual:[CBUUID UUIDWithString:@"1800"]] )
{
for (CBCharacteristic *aChar in service.characteristics)
{
/* Read device name */
if ([aChar.UUID isEqual:[CBUUID UUIDWithString:@"2A00"]])
{
[aPeripheral readValueForCharacteristic:aChar];
NSLog(@"Found a Device Name Characteristic");
}
}
}
if ([service.UUID isEqual:[CBUUID UUIDWithString:@"180A"]])
{
for (CBCharacteristic *aChar in service.characteristics)
{
/* Read manufacturer name */
if ([aChar.UUID isEqual:[CBUUID UUIDWithString:@"2A29"]])
{
[aPeripheral readValueForCharacteristic:aChar];
NSLog(@"Found a Device Manufacturer Name Characteristic");
}
}
}
}
/*
Invoked upon completion of a -[readValueForCharacteristic:] request or on the reception of a notification/indication.
*/
- (void) peripheral:(CBPeripheral *)aPeripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
{
NSLog(@"didUpdateValueForCharacteristic");
/* Updated value for heart rate measurement received */
if ([characteristic.UUID isEqual:[CBUUID UUIDWithString:@"2A37"]])
{
if( (characteristic.value) || !error )
{
/* Update UI with heart rate data */
//[self updateWithHRMData:characteristic.value];
}
}
/* Value for body sensor location received */
else if ([characteristic.UUID isEqual:[CBUUID UUIDWithString:@"2A38"]])
{
NSData * updatedValue = characteristic.value;
uint8_t* dataPointer = (uint8_t*)[updatedValue bytes];
if(dataPointer)
{
uint8_t location = dataPointer[0];
NSString* locationString;
switch (location)
{
case 0:
locationString = @"Other";
break;
case 1:
locationString = @"Chest";
break;
case 2:
locationString = @"Wrist";
break;
case 3:
locationString = @"Finger";
break;
case 4:
locationString = @"Hand";
break;
case 5:
locationString = @"Ear Lobe";
break;
case 6:
locationString = @"Foot";
break;
default:
locationString = @"Reserved";
break;
}
NSLog(@"Body Sensor Location = %@ (%d)", locationString, location);
}
}
/* Value for device Name received */
else if ([characteristic.UUID isEqual:[CBUUID UUIDWithString:@"2A00"]])
{
NSString * deviceName = [[[NSString alloc] initWithData:characteristic.value encoding:NSUTF8StringEncoding] autorelease];
NSLog(@"Device Name = %@", deviceName);
}
/* Value for manufacturer name received */
else if ([characteristic.UUID isEqual:[CBUUID UUIDWithString:@"2A29"]])
{
NSString * manufacturer = [[[NSString alloc] initWithData:characteristic.value encoding:NSUTF8StringEncoding] autorelease];
NSLog(@"Manufacturer Name = %@", manufacturer);
}
}
@end

17
examples/bluetooth/main.go Normal file
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package main
import (
"fmt"
"time"
"gitlab.wow.st/gmp/nswrap/examples/bluetooth/ble"
)
func main() {
cd := ble.NewBle_delegate().Init()
fmt.Println("LE capable:",cd.IsLECapableHardware())
time.Sleep(time.Second * 1)
fmt.Println("LE capable:",cd.IsLECapableHardware())
uuid := ble.CBUUIDWithString(ble.NSStringWithUTF8String(ble.CharFromString("180d")))
cd.ScanFor(uuid)
time.Sleep(time.Second * 15)
}

44
examples/bluetooth/nswrap.toml Normal file
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@ -0,0 +1,44 @@
Package = "ble"
InputFiles = [
"/System/Library/Frameworks/Foundation.framework/Headers/Foundation.h",
"/System/Library/Frameworks/CoreBluetooth.framework/Headers/CoreBluetooth.h",
"ble/ble_delegate.h",
]
Classes = [
"ble_delegate",
"CBCentralManager",
"CBPeripheralManager",
"CBPeripheral",
"CBCentral",
"CBService",
"CBCharacteristic",
"CBDescriptor",
"CBError",
"CBUUID",
"CBAdvertisementData",
"CBATTRequest",
"NSArray",
"NSMutableArray",
"NSDictionary",
"NSEnumerator",
"NSSet",
"NSDate",
"NSTimeZone",
"NSString",
]
Functions = [
"NSMakeRange",
]
Enums = [
"CB.*",
]
Frameworks = [
"Foundation",
"CoreBluetooth",
]
Imports = [
"ble_delegate.h",
]
Pragma = [ 'clang diagnostic ignored "-Wformat-security"' ]
VaArgs = 32