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Serial Port Library Functions MVI-ADM ♦ 'C' Programmable
Developer's Guide 'C' Programmable Application Development Module
Page 250 of 342 ProSoft Technology, Inc.
February 20, 2013
MVIsp_GetLineStatus
Syntax
int MVIsp_GetLineStatus(int comport, BYTE *status);
Parameters
comport
port for which line status is requested
status
pointer to BYTE to receive line status
Description
MVIsp_GetLineStatus returns any line status errors received over the serial port.
The status returned indicates if any overrun, parity, or framing errors or break
signals have been detected.
comport is the desired serial port and must be previously opened with
MVIsp_Open.
status points to a BYTE that will receive a set of flags that indicate errors
received over the serial port. If the returned status is 0, no errors have been
detected. If status is non-zero, it can be logically and'ed with the line status error
flags LSERR_OVERRUN, LSERR_PARITY, LSERR_FRAMING,
LSERR_BREAK, and/or QSERR_OVERRUN to determine the exact cause of the
error. The corresponding error flag will be set for each error type detected (Note:
The QSERR_OVERRUN bit indicates that a receive queue overflow has
occurred).
After returning the bit flags in status, line status errors are cleared. Therefore,
MVIsp_GetLineStatus actually returns line status errors detected since the
previous call to this function.
Return Value
MVI_SUCCESS
the line status was read successfully
MVI_ERR_NOACCESS
comport has not been opened
MVI_ERR_BADPARAM
invalid pointer
Example
BYTE sts;
if (MVIsp_GetGetLineStatus(COM2,&sts) == MVI_SUCCESS)
{
if (sts == 0)
printf("No Line Status Errors Received\n");
else if ( (sts & LSERR_BREAK) != 0)
printf("A Break Signal was Received\n");
else
printf("A Line Status Error was Received\n");
}
- MVI-ADM 1
- Your Feedback Please 2
- Content Disclaimer 2
- Warnings 3
- Battery Life Advisory 4
- Contents 5
- 1 Introduction 13
- In This Chapter 15
- 2.1 Package Contents 16
- 2.3.1 Setup Jumper 18
- 2.4 Cable Connections 19
- 2.4.3 RS-422 22
- 3.1 API Libraries 26
- 3.1.1 Calling Convention 26
- 3.1.2 Header File 26
- 3.1.3 Sample Code 26
- 3.2 Development Tools 28
- 3.3 Theory of Operation 29
- 3.3.1 ADM API 29
- 3.4 ADM Functional Blocks 30
- 3.4.1 Database 30
- 3.4.3 Serial Communications 53
- 3.4.4 Main_app.c 53
- 3.4.5 Debugprt.c 54
- 3.4.6 MVIcfg.c 54
- 3.4.7 Commdrv.c 56
- 3.5 ADM API Architecture 59
- 3.6 ADM API Files 60
- 3.7 Backplane API Files 64
- 3.8 Serial API Files 66
- 3.9 Side-Connect API Files 67
- 3.9.2 Data Transfer 67
- 4.2 Setting Up WINIMAGE 87
- SETDNPSC 10 88
- 5 Programming the Module 91
- 5.1 ROM Disk Configuration 92
- 5.1.1 CONFIG.SYS File 92
- 5.1.2 Command Interpreter 94
- 5.1.3 Sample ROM Disk Image 95
- 5.3 MVIUPDAT 99
- CONNECT 100
- 5.4 MVI System BIOS Setup 101
- 5.5 Debugging Strategies 102
- 6 Creating Ladder Logic 103
- 6.1 MVI46 Ladder Logic 104
- 6.1.1 Main Routine 104
- 6.2.2 Read Routine 105
- 6.2 MVI56 Ladder Logic 105
- 6.2.1 Main Routine 105
- 6.3 MVI69 Ladder Logic 106
- 6.3.1 Main Routine 106
- 6.3.2 Read Routine 107
- 6.3.3 Write Routine 108
- 6.4 MVI71 Ladder Logic 109
- 6.4.1 Sample Ladder Logic 109
- 6.5 MVI94 Ladder Logic 115
- 6.5.1 Main Routine 115
- 6.5.2 ADM 116
- ADM API 119
- 7.1 ADM API Functions 120
- ADM_Open 123
- ADM_Close 124
- ADM_ProcessDebug 125
- ADM_DAWriteSendCtl 126
- ADM_DAWriteRecvCtl 127
- ADM_DAWriteSendData 128
- ADM_DAWriteRecvData 129
- ADM_ConPrint 130
- ADM_CheckDBPort 131
- ADM_DBOpen 132
- ADM_DBClose 133
- ADM_DBZero 134
- ADM_DBGetBit 135
- ADM_DBSetBit 136
- ADM_DBClearBit 137
- ADM_DBGetByte 138
- ADM_DBSetByte 139
- ADM_DBGetWord 140
- ADM_DBSetWord 141
- ADM_DBGetLong 142
- ADM_DBSetLong 143
- ADM_DBGetFloat 144
- ADM_DBSetFloat 145
- ADM_DBGetDFloat 146
- ADM_DBSetDFloat 147
- ADM_DBGetBuff 148
- ADM_DBSetBuff 149
- ADM_DBGetRegs 150
- ADM_DBSetRegs 151
- ADM_DBGetString 152
- ADM_DBSetString 153
- ADM_DBSwapWord 154
- ADM_DBSwapDWord 155
- ADM_GetDBCptr 156
- ADM_GetDBIptr 157
- ADM_GetDBInt 158
- ADM_DBChanged 159
- ADM_DBBitChanged 160
- ADM_DBOR_Byte 161
- ADM_DBNOR_Byte 162
- ADM_DBAND_Byte 163
- ADM_DBNAND_Byte 164
- ADM_DBXOR_Byte 165
- ADM_DBXNOR_Byte 166
- 7.5 ADM API Clock Functions 167
- ADM_StartTimer 167
- ADM_CheckTimer 168
- ADM_BtOpen 169
- ADM_BtClose 170
- ADM_BtNext 171
- ADM_ReadBtCfg 172
- ADM_BtFunc 173
- ADM_SetStatus 174
- ADM_SetBtStatus 175
- 7.7 ADM LED Functions 176
- ADM_SetLed 176
- 7.8 ADM API Flash Functions 177
- ADM_FileGetString 177
- ADM_FileGetInt 178
- ADM_FileGetChar 179
- ADM_GetVal 180
- ADM_GetChar 181
- ADM_GetStr 182
- ADM_SkipToNext 183
- ADM_Getc 184
- ADM_GetVersionInfo 185
- ADM_SetConsolePort 186
- ADM_SetConsoleSpeed 187
- ADM_ScOpen 188
- ADM_ScClose 189
- ADM_ReadScFile 190
- ADM_ReadScCfg 191
- ADM_ScScan 192
- 7.11 ADM API RAM Functions 193
- ADM_EEPROM_ReadConfiguration 193
- ADM_RAM_Find_Section 194
- ADM_RAM_GetString 195
- ADM_RAM_GetInt 196
- ADM_RAM_GetLong 197
- ADM_RAM_GetFloat 198
- ADM_RAM_GetDouble 199
- ADM_RAM_GetChar 200
- 8 Backplane API Functions 201
- MVIbp_Open 203
- MVIbp_Close 204
- MVIbp_GetIOConfig 206
- MVIbp_SetIOConfig 208
- MVIbp_WaitForInputScan 210
- MVIbp_WaitForOutputScan 212
- MVIbp_ReadOutputImage 214
- MVIbp_WriteInputImage 215
- MVIbp_ReceiveMessage 216
- MVIbp_SendMessage 218
- MVIbp_GetVersionInfo 220
- MVIbp_GetModuleInfo 221
- MVIbp_ErrorString 222
- MVIbp_SetUserLED 223
- MVIbp_SetModuleStatus 224
- MVIbp_GetConsoleMode 225
- MVIbp_GetSetupMode 226
- MVIbp_GetProcessorStatus 227
- MVIbp_Sleep 228
- MVIbp_SetConsoleMode 229
- MVIbp_ReadModuleFile (MVI46) 230
- MVIsp_Open 235
- MVIsp_OpenAlt 237
- MVIsp_Close 239
- MVIsp_Config 240
- MVIsp_SetHandshaking 242
- MVIsp_SetRTS 243
- MVIsp_GetRTS 244
- MVIsp_SetDTR 245
- MVIsp_GetDTR 246
- MVIsp_GetCTS 247
- MVIsp_GetDSR 248
- MVIsp_GetDCD 249
- MVIsp_GetLineStatus 250
- MVIsp_Putch 251
- MVIsp_Getch 252
- MVIsp_Puts 253
- MVIsp_PutData 255
- MVIsp_Gets 257
- MVIsp_GetData 259
- MVIsp_GetCountUnsent 261
- MVIsp_GetCountUnread 262
- MVIsp_PurgeDataUnsent 263
- MVIsp_PurgeDataUnread 264
- MVIsp_GetVersionInfo 265
- 10.2 CIP API Architecture 269
- MVIcip_Open 270
- MVIcip_Close 271
- MVIcip_RegisterAssemblyObj 272
- MVIcip_UnregisterAssemblyObj 274
- 10.5 CIPConnect 275
- Data Transfer 275
- MVIcip_WriteConnected 275
- MVIcip_ReadConnected 276
- MVIHANDLE connHandle; 277
- BYTE buffer[128]; 277
- 10.6 CIP Callback Functions 278
- MVIcip_RegisterFatalFaultRtn 289
- MVIcip_RegisterResetReqRtn 290
- MVIcip_GetIdObject 292
- MVIcip_GetVersionInfo 293
- MVIcip_SetUserLED 294
- MVIcip_SetModuleStatus 295
- MVIcip_ErrorString 296
- MVIcip_GetSetupMode 297
- MVIcip_GetConsoleMode 298
- MVIcip_Sleep 299
- 11.1 Initialization 302
- 11.1.1 PLC Data Table Access 302
- 11.1.2 Synchronization 302
- 11.2 PLC Message Handling 303
- 11.2.1 Block Transfer 303
- 11.2.3 Miscellaneous 303
- MVIsc_Open 304
- MVIsc_Close 305
- MVIsc_GetPLCFileInfo 306
- MVIsc_WritePLC 308
- MVIsc_ReadPLC 310
- MVIsc_RMWPLC 312
- MVIsc_WaitForEos 314
- MVIsc_PLCMsgRead 315
- MVIsc_PLCMsgWrite 316
- MVIsc_PLCMsgWait 317
- MVIsc_PLCBTRead 318
- MVIsc_PLCBTWrite 319
- MVIsc_GetPLCStatus 320
- MVIsc_GetPLCClock 322
- MVIsc_SyncPLCClock 323
- MVIsc_ClearFault 324
- MVIsc_SetPLCMode 325
- MVIsc_GetVersionInfo 326
- MVIsc_ErrorStr 327
- MVIsc_GetLastPcccError 328
- MVIsc_BCD2BIN 329
- MVIsc_BIN2BCD 330
- 13.2 Warranty Information 334
- Glossary of Terms 335
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