site_archiver@lists.apple.com Delivered-To: bluetooth-dev@lists.apple.com Hi, Please review the code and provide your inputs. I want to do something like this, pseudo code: #include <CoreFoundation/CoreFoundation.h> // #include <IOBluetoothRFCOMMWorkaround.m> #include <IOBluetooth/objc/IOBluetoothDevice.h> #include <IOBluetooth/objc/IOBluetoothRFCOMMChannel.h> // Bluetooth #include <IOBluetooth/IOBluetoothUserLib.h> #include <IOBluetoothUI/IOBluetoothUIUserLib.h> #include <CoreServices/CoreServices.h> #import <Cocoa/Cocoa.h> IOBluetoothRFCOMMChannelRef mRFCOMMChannelRef; char userName[100]; bool StartBlueTooth() { id pool = [[NSAutoreleasePool alloc] init]; bool returnValue = false; IOBluetoothSDPServiceRecordRef serviceRecord; //CFArrayRef serviceArray; //IOBluetoothSDPUUIDRef chatUUID; strcpy(userName, "TestBluetooth RFCOMM"); IOBluetoothServiceBrowserControllerRef serviceBrowser; IOReturn result; if ( (result == kIOReturnSuccess) && (serviceRecord != NULL) ) { UInt8 rfcommChannelID; NSLog(@"Service record info1: %@", serviceRecord); bool sendData(void* buffer, UInt32 length) { if ( mRFCOMMChannelRef != nil ) { printf("Inside sendData\n"); UInt32 numBytesRemaining; IOReturn result; BluetoothRFCOMMMTU rfcommChannelMTU; result = kIOReturnSuccess; numBytesRemaining = length; return false; } kill1: TerminateBluetooth(); return 0; } http://www.patni.com World-Wide Partnerships. World-Class Solutions. _____________________________________________________________________ _______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists.a... This email sent to site_archiver@lists.apple.com We're building a small application to read & write with Barcode Scanner which are Bluetooth enabled, and I'm writing a Carbon application in C++ using CW 9.3 to get and display data from the device. I've successfully established a connection but not sure that i am sending & receiving data back from device . We use LinkSys bluetooth adapter to communication with barcode device. One More query i want to ask that, in USB connection we get device file object (something like "cu.usb...") under ../dev sys directory when we connect the device with Macintosh 10.3.5, through with we do low level file i/o and successfully send & receive data from device. So I was wandering that Cann't we get device file object in case of bluetooth connectivity, if yes then in which directory it makes the device file object. Please suggest. // ************************************************************************ ************************************/ // Serial headers #include <stdio.h> #include <string.h> #include <termios.h> // Hold the original termios attributes so we can reset them void rfcommEventListener (IOBluetoothRFCOMMChannelRef rfcommChannel, void *refCon, IOBluetoothRFCOMMChannelEvent *event) { switch (event->eventType) { case kIOBluetoothRFCOMMNewDataEvent: // In thise case: // event->u.newData.dataPtr is a pointer to the block of data received. // event->u.newData.dataSize is the size of the block of data. printf("Listener1 = %s\n", event->u.newData.dataPtr); printf(" Listener called"); break; case kIOBluetoothRFCOMMFlowControlChangedEvent: // In thise case: // event->u.flowStatus is the status of flow control (see IOBluetoothRFCOMMFlowControlStatus for current restrictions) break; case kIOBluetoothRFCOMMChannelTerminatedEvent: // In this case: // event->u.terminatedChannel is the channel that was terminated. It can be converted in an IOBluetoothRFCOMMChannel // object with [IOBluetoothRFCOMMChannel withRFCOMMChannelRef:]. (see below). break; } } static void rfcommDataListener(IOBluetoothRFCOMMChannelRef rfcommChannel,void* data, UInt16 length, void* refCon) { printf(" DataListener get called"); void *pBuffer = malloc(length); memcpy(pBuffer, data, length); printf("Data received from device is %s", pBuffer); } void TerminateBluetooth() { if ( mRFCOMMChannelRef != NULL ) { // This will close the RFCOMM channel and start an inactivity timer that will close the baseband connection if no other // channels (L2CAP or RFCOMM) are open after a set period of time. IOBluetoothRFCOMMChannelCloseChannel( mRFCOMMChannelRef ); // This close connection call signals to the system that we are done with the baseband connection. If no other // channels are open, it will immediately close the baseband connection. IOBluetoothDeviceCloseConnection( IOBluetoothRFCOMMChannelGetDevice( mRFCOMMChannelRef ) ); // Since we are done with the RFCOMM channel ref, we need to release it. IOBluetoothObjectRelease( mRFCOMMChannelRef ); mRFCOMMChannelRef = NULL; } } // First, we create a service browser controller which will allow us to put up a panel to allow the user // to select a device and service. //serviceBrowser = IOBluetoothServiceBrowserControllerCreate( kIOBluetoothServiceBrowserControllerOptionsNone ); // This call will return kIOReturnSuccess if the user has successfully selected a device and service that matches the // specified serviceArray. result = IOBluetoothServiceBrowserControllerDiscover(serviceBrowser, &serviceRecord); // To connect we need a device to connect and an RFCOMM channel ID to open on the device: result = IOBluetoothSDPServiceRecordGetRFCOMMChannelID(serviceRecord, &rfcommChannelID); if ( result == kIOReturnSuccess ) { IOBluetoothDeviceRef device; CFStringRef l_serviceName; char l_buffer[200]; // The service record contains all the useful information about the service the user selected // we log its name and RFCOMM Channel ID // IOBluetoothSDPServiceRecordGetServiceName( serviceRecord ), rfcommChannelID ); // Get the device from the service record device = IOBluetoothSDPServiceRecordGetDevice( serviceRecord ); // We must first open the baseband connection to the device before we can open the RFCOMM channel. The RFCOMM Channel // open API should probably do this automatically, but for now we have to do it manually. if ( device != NULL ) { NSLog(@"Service record info2: %@", serviceRecord); result = IOBluetoothDeviceOpenConnection(device, NULL, NULL); if (result == kIOReturnSuccess) { // Open channel and registers our callback for RFCOMM Events: result = IOBluetoothRFCOMMChannelRegisterIncomingDataListener(mRFCOMMChannelRef, rfcommDataListener, userName); result = IOBluetoothDeviceOpenRFCOMMChannel(device, rfcommChannelID, &mRFCOMMChannelRef) ; if ( result == kIOReturnSuccess ) returnValue = true; } else NSLog(@"Unable to open device 0x%x, err=0x%x, device info: %@", device, result, device); } } } [pool release]; return returnValue; } // Get the RFCOMM Channel's MTU. Each write can only contain up to the MTU size // number of bytes. rfcommChannelMTU = IOBluetoothRFCOMMChannelGetMTU( mRFCOMMChannelRef ); while ( ( result == kIOReturnSuccess ) && ( numBytesRemaining > 0 ) ) { // finds how many bytes I can send: UInt32 numBytesToSend = ( ( numBytesRemaining > rfcommChannelMTU ) ? rfcommChannelMTU : numBytesRemaining ); // This function won't return until the buffer has been passed to the Bluetooth hardware // to be sent to the remote device. // Alternatively, the asynchronous version of this function could be used which would queue // up the buffer and return immediately. result = IOBluetoothRFCOMMChannelWriteSync( mRFCOMMChannelRef, buffer, numBytesToSend ); printf("After Write sendData\n"); // Updates the position in the buffer: numBytesRemaining -= numBytesToSend; ((char *) buffer) += numBytesToSend; } // We are successful only if all the data was sent: if ( ( numBytesRemaining == 0 ) && ( result == kIOReturnSuccess ) ) { return true; } } int main(int argc, char *argv[]) { #pragma unused(argc, argv) printf("Starting the application\n"); bool ret = StartBlueTooth(); if(!ret ) { DLOG("Failed to start"); goto kill1; } //THIS IS THE TEST COMMAND WE WANT TO SEND TO BARCODE SCANNER WHICH IS BLUETOOTH ENABLED); char l_pTrigger[200]; int l_iLength; sprintf(l_pTrigger, "\x16T\x0D"); l_iLength = 3; //CFRunLoopRun(); // How should i put app in loop to read complete data if i send two commands. sendData((void *) l_pTrigger, l_iLength); This e-mail message may contain proprietary, confidential or legally privileged information for the sole use of the person or entity to whom this message was originally addressed. 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