Apple Newton Utilities Guida Utente Scaricare il pdf (Pagina 837)

Endpoint Interface

Using the Endpoint Interface 23-9

All option data you set gets packed together into one block of data. Each option

within this block must be long-word aligned for the communication tools. So,

when using the

'template data form, you need to use the 'struct type (at the

beginning of the

typelist array) to guarantee that the option is long-word

aligned and padded. To set the serial input/output parameters, for instance, the

option frame might look like this:

serialIOParms := {

type: 'option,

label: kCMOSerialIOParms,

opCode: opSetNegotiate,

kNoParity, // parity

k1StopBits, // stopBits

k8DataBits, // dataBits

k9600bps, // bps

To get the connection information, the option frame you construct might look like this:

connectInfoParms := {

type: 'option,

label: kCMOSerialIOParms,

opCode: opGetCurrent,

0, // parity placeholder

0, // stopBits placeholder

0, // dataBits placeholder

0, // bps placeholder

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Apple Newton Utilities Guida Utente Pagina 837