|
|
|
|
- Miscellaneous
- Transmission between two computers that use character strings in different formats (UNICODE and ANSI)
- Features specific to Android and Android widget
sWrite (Function) In french: sEcrit Writes a character string to the output buffer of the specified serial port, parallel port or infrared port. The end of writing can be checked by sInExitQueue. Remarks: - The port must be opened beforehand (sOpen).
- Only serial ports are supported.
// The COM2 port is opened PortNum = sOpen("COM2", 2000, 2000) // Open COM2 IF PortNum <> 0 THEN sMessage is string // Send a message to the output buffer of COM2 sWrite(PortNum, sMessage) // Wait for the end of the write operation LOOP IF sInExitQueue(2) = 0 THEN BREAK END Info("End of write operation") END Syntax
Writing a buffer into the output buffer of a port Hide the details
<Result> = sWrite(<Port number> , <Buffer to write>)
<Result>: Integer - Number of characters written,
- 0 if timeout is over and if the writing was not performed.
<Port number>: Integer Identifier of the port used:- Port number:
- Number of the serial port: 1, 2, 3, ... 32 for COM1, COM2, COM3, ... COM32.
- Number of the parallel port: -1, -2, -3 or -4 for LPT1, LPT2, LPT3 or LPT4.
- Number of the infrared port: 1, 2, 3, ... 32 for IR1, IR2, IR3, ... IR32.
- Port identifier returned by sOpen (if this function was called with a port name).
Only this type of parameter is available.
<Buffer to write>: Buffer Buffer that must be written into the output buffer. Remarks - sOpen has no effect if the port was not opened by sWrite.
- A 32-bit application is locked during the duration of the transfer. To avoid this lock, the timeout between two write operations must be specified in sOpen. When the timeout is over and if the writing was not performed, sWrite returns 0.
- The time required to transfer the string depends on the transmission speed.
- The string or the buffer is automatically transferred.
- WLanguage does not support control signals.
- The time to wait for a character to be read or written is specified with sOpen.
- If this time is set to 1s when reading 1024 bytes, the waiting time will be 1024s.
- If this time is set to "-1s" when reading 1024 bytes, the waiting time will be 1s.
This prevents lock problems when reading from or writing to the print port.
Transmission between two computers that use character strings in different formats (UNICODE and ANSI) Some conversions are required to perform a transmission between two computers that use different formats of character strings (Windows (ANSI) and Windows Mobile (UNICODE) for example): | | | | Format of character strings on the current computer | Write operation (sWrite function) | Read operation (sRead) | String in ANSI format | String in UNICODE format | ANSI (PC running Windows for example) | The character string will be in ANSI format | No conversion is required | Conversion required (UnicodeToAnsi) | UNICODE | The character string will be in UNICODE format | Conversion required (AnsiToUnicode) | No conversion is required |
Business / UI classification: Business Logic
This page is also available for…
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|