Prosoft-technology MVI69-ADM Manual de usuario descargar pdf (Pagina 58)

Understanding the MVI-ADM API MVI-ADM ♦ 'C' Programmable

Developer's Guide 'C' Programmable Application Development Module

Page 58 of 342 ProSoft Technology, Inc.

February 20, 2013

Software

The following is a code sample designed to illustrate the steps required to

transmit in RS-485. Depending on the application, it may be necessary to handle

other processes during this transmit sequence and to not block. This is simplified

to demonstrate the steps required.

int length = 10; // send 10 characters

int CharsLeft;

BYTE buffer[10];

// Set RTS on

MVIsp_SetRTS(COM2, ON);

// Optional delay here (depends on application)

// Transmit message

MVIsp_PutData(COM2, buffer, &length, TIMEOUT_ASAP);

// Check to see that message is done

MVIsp_GetCountUnsent(COM2, &CharsLeft);

// Keep checking until all characters sent

while(CharsLeft)

{

MVIsp_GetCountUnsent(COM2, &CharsLeft);

}

// Optional delay here (depends on application)

// Set RTS off

MVIsp_SetRTS(COM2, OFF);

3.4.8 Using Compact Flash Disks

In order to use Compact Flash disks, you must enable Compact Flash in BIOS

Setup. Once enabled, the Compact Flash Disk should appear as a DOS C: drive.

Use standard 'C' file access functions to read and write to the Compact Flash

disk.

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Prosoft-technology MVI69-ADM Manual de usuario Pagina 58