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GoFiler Legato Script Reference
Legato v 1.4j Application v 5.22b
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Chapter Twelve — Internet Functions (continued)
Overview
The SerialGetLinkStatus function tests the condition of the serial link, returns a status code as well as certain channel states.
Syntax/Parameters
Syntax
int = SerialGetLinkStatus ( handle hSerial );
Parameters
hSerial
A handle to a Serial Port Object.
Return Value
Returns an int as a status code or a formatted error code on failure. Link off line is considered an error.
Remarks
If the configuration does have the DCD detect enabled, this function will always return SP_LINK_UNKNOWN (assuming the provided handle is valid). When DCD detect is enabled, the function will return certain sense status such as Ring or CTS.
| Definition | Bitwise | Description | ||||
| Masks | ||||||
| SP_ERROR_STATE_MASK | 0xF0000000 | An Error Condition Exists | ||||
| SP_CONDITION_MASK | 0x000F0000 | Condition Mask | ||||
| SP_CHANNEL_MASK | 0x000000FF | Channel Codes (from Windows SK) | ||||
| Windows SDK Codes | ||||||
| SP_CTS_FLAG | 0x00000010 | Clear to Send (CTS, MS_CTS_ON) | ||||
| SP_DSR_FLAG | 0x00000020 | Data Set Ready (DSR, MS_DSR_ON) | ||||
| SP_RING_FLAG | 0x00000040 | Ring Signal (MS_RING_ON) | ||||
| SP_DCD_ON | 0x00000080 | Data Carrier (DCD, MS_RLSD_ON) | ||||
| General Errors | ||||||
| SP_CANCEL | 0x80010000 | User Cancel/Abort | ||||
| SP_LINK_OFFLINE | 0x80030000 | Link Offline (no DCD/RSLD) | ||||
| SP_TX_ERROR | 0x80040000 | Transmit Error | ||||
| Conditions | ||||||
| SP_LINK_UNKNOWN | 0x00050000 | Link Status Was Not Tested | ||||
| SP_LINK_ONLINE | 0x00060000 | Link Online (has DCD/RSLD) | ||||
Related Functions
Platform Support
Go13, Go16, GoFiler Complete, GoFiler Corporate, GoFiler, GoFiler Lite, GoXBRL
Legato IDE, Legato Basic
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