Page 202 - PDA Robotics Using Your Personal Digital Assistant to Control Your Robot

PDA 09 5/27/03 8:50 AM Page 178
}
// PDA Robotics
// Disable the wireless button since we MUST first be connetd to the command cen-
ter
// before initializing the IrDA connection if we want to use the wireless link
//
m_wireless_button.EnableWindow(FALSE);

}
Below is the code listing for InitiateIrDAConnection().

bool CPDABotDlg::InitiateIrDAConnection()
{
//
// Initiate an IrDA client
//

#define DEVICE_LIST_LEN 5
#define IAS_QUERY_ATTRIB_MAX_LEN 32

//
// DevListBuff discovery buffer stores the information that PDARobots body will send to
// us in the initial stages of the IrDA handshake
//

BYTE DevListBuff[sizeof(DEVICELIST) - sizeof(IRDA_DEVICE_INFO) +
(sizeof(IRDA_DEVICE_INFO) * DEVICE_LIST_LEN)];
int DevListLen = sizeof(DevListBuff);
//
// This list stores all the devices that responded to our IrDA query. There may
// be an IrDA compliant printer, like my HP1000, and the PDABot body. We
// should look for 'Generic IrDA' and connect with only this device. I will
// leave this modification up to you. See the chapter on the PalmOS software
// for instructions on how to do this. For now I pick the first device in the list.
//
PDEVICELIST pDevList = (PDEVICELIST) &DevListBuff;

//
// buffer for IAS query
//

BYTE IASQueryBuff[sizeof(IAS_QUERY) - 3 + IAS_QUERY_ATTRIB_MAX_LEN];
int IASQueryLen = sizeof(IASQueryBuff);
PIAS_QUERY pIASQuery = (PIAS_QUERY) &IASQueryBuff;

//
// for searching through peers IAS response

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