HP 48gII Graphing, 50g Graphing manual Srepl, Sst↓, Access …µSRECV

Note that BUFLEN also clears the abovementioned f raming, overrun, and overflow errors. Therefore, SRECV cannot detect an inputbuffer over flow after BUFLEN is executed, unless more characters were received after BUFLEN was executed (causing the input buffer to overflow again). SRECV also cannot detect framing and UART overrun errors cleared by BUFLEN. To find where the data error occurred, save the number of characters returned by BUFLEN (which gives the number of “good” characters received), because as soon as the error is cleared, new characters can enter the input buffer.

Access: …µSRECV

Flags: I/O Device (–33), I/O Device for Wire (–78)

Input/Output:

Level 1/Argument 1		Level 2/Item 1	Level 1/Item 2
n	→	'string'	0/1

Example: If 10 good bytes were received followed by a framing error, then an SRECV command told to read 10 bytes would not indicate an error. Only when SRECV tries to read the byte that caused the framing error does it return a 0. Similarly, if the input buffer overflowed, SRECV would not indicate an error until it tried to read the first byte that was lost due to the overflow.

See also: BUFLEN, CLOSEIO, OPENIO, SBRK, STIME, XMIT

SREPL

Type:	Command
Description:	Find and replace: Finds and replaces a string in a given text object. You supply the following
	inputs:
	Level 3/argument 1: the string to search.
	Level 2/argument 2: the string to find.
	Level 1/argument 3: the string to replace it with.
Access:	…&NLSREPL
	„°LCHARS LSREPL		( °is the leftshift of the		Nkey).
Input/Output:
		Level 3/Argument 1	Level 2/Argument 2	Level 1/Argument 3	Level 1/Item 1
		'string'	'string'	'string'	→	'string'
See also:	REPL
SST	Operation
Type:
Description:	Execute Program Step Operation: Returns and executes the next step of a program. If the next
	step is a subroutine, executes the subroutine in a single step.
	SST is not programmable.
Access:	„°LLRUN SST		( °is the leftshift of the		Nkey).
Input/Output:	None
See also:	NEXT, SST↓
SST↓	Operation
Type:
Description:	Execute Subroutine Step Operation: Returns and executes the next step of a program or
	subroutine. If the next step is a subroutine, returns and executes the first step of the subroutine.
	SST↓ is not programmable.
Access:	„°LLRUN SST↓		( °is the leftshift of the		Nkey).
Input/Output:	None

Full Command and Function Reference 3233