Find in Module Config File - Revision history

Root: Bugfix

2017-12-15T13:49:32Z

Bugfix

← Older revision		Revision as of 15:49, 15 December 2017
Line 72:		Line 72:
	Defines CFGFILE_STARTADDR and CFGFILE_ENDADDR limit the search range. The function returns 0 if the string was not found. The following example searches section [UART1] in the entire module configuration file:		Defines CFGFILE_STARTADDR and CFGFILE_ENDADDR limit the search range. The function returns 0 if the string was not found. The following example searches section [UART1] in the entire module configuration file:

	<syntaxhighlight ~~lexer~~="c">		<syntaxhighlight lang="c">
	sectionstart = DM2_cfgFindString ("[UART1]", CFGFILE_STARTADDR, CFGFILE_ENDADDR);		sectionstart = DM2_cfgFindString ("[UART1]", CFGFILE_STARTADDR, CFGFILE_ENDADDR);
	</syntaxhighlight>		</syntaxhighlight>
Line 78:		Line 78:
	To search an entry within a section, first define the range by searching the desired section and the next section delimiter, then search the item inside this range		To search an entry within a section, first define the range by searching the desired section and the next section delimiter, then search the item inside this range

	<syntaxhighlight ~~lexer~~="c">		<syntaxhighlight lang="c">
	sectionstart = DM2_cfgFindString ("[UART1]", CFGFILE_STARTADDR, CFGFILE_ENDADDR);		sectionstart = DM2_cfgFindString ("[UART1]", CFGFILE_STARTADDR, CFGFILE_ENDADDR);
	if (sectionstart > 0)		if (sectionstart > 0)

Root at 12:28, 15 December 2017

2017-12-15T12:28:52Z

← Older revision		Revision as of 14:28, 15 December 2017
Line 1:		Line 1:
	=== Find an Item in the Module Configuration File ===		=== Find an Item in the Module Configuration File ===

	<syntaxhighlight lang="~~php~~">		<syntaxhighlight lang="c">
	#define CFGFILE_STARTADDR 0x10000 /* board specific, change may be required */		#define CFGFILE_STARTADDR 0x10000 /* board specific, change may be required */
	#define CFGFILE_ENDADDR 0x20000 /* board specific, change may be required */		#define CFGFILE_ENDADDR 0x20000 /* board specific, change may be required */

Root at 12:28, 15 December 2017

2017-12-15T12:28:39Z

← Older revision		Revision as of 14:28, 15 December 2017
Line 1:		Line 1:
	=== Find an Item in the Module Configuration File ===		=== Find an Item in the Module Configuration File ===

	<syntaxhighlight lang="c">		<syntaxhighlight lang="php">
	#define CFGFILE_STARTADDR 0x10000 /* board specific, change may be required */		#define CFGFILE_STARTADDR 0x10000 /* board specific, change may be required */
	#define CFGFILE_ENDADDR 0x20000 /* board specific, change may be required */		#define CFGFILE_ENDADDR 0x20000 /* board specific, change may be required */

Root: tesrt

2017-12-15T11:51:26Z

tesrt

← Older revision		Revision as of 13:51, 15 December 2017
Line 1:		Line 1:
	=== Find an Item in the Module Configuration File ===		=== Find an Item in the Module Configuration File ===

	<syntaxhighlight>		<syntaxhighlight lang="c">
	#define CFGFILE_STARTADDR 0x10000 /* board specific, change may be required */		#define CFGFILE_STARTADDR 0x10000 /* board specific, change may be required */
	#define CFGFILE_ENDADDR 0x20000 /* board specific, change may be required */		#define CFGFILE_ENDADDR 0x20000 /* board specific, change may be required */

Root: test

2017-12-15T11:50:05Z

test

← Older revision		Revision as of 13:50, 15 December 2017
Line 1:		Line 1:
	=== Find an Item in the Module Configuration File ===		=== Find an Item in the Module Configuration File ===

	<syntaxhighlight ~~lexer="c"~~>		<syntaxhighlight>
	#define CFGFILE_STARTADDR 0x10000 /* board specific, change may be required */		#define CFGFILE_STARTADDR 0x10000 /* board specific, change may be required */
	#define CFGFILE_ENDADDR 0x20000 /* board specific, change may be required */		#define CFGFILE_ENDADDR 0x20000 /* board specific, change may be required */

Root: test

2017-12-15T11:29:46Z

test

← Older revision		Revision as of 13:29, 15 December 2017
Line 1:		Line 1:
	=== Find an Item in the Module Configuration File ===		=== Find an Item in the Module Configuration File ===

	<syntaxhighlight ~~lang~~="c">		<syntaxhighlight lexer="c">
	#define CFGFILE_STARTADDR 0x10000 /* board specific, change may be required */		#define CFGFILE_STARTADDR 0x10000 /* board specific, change may be required */
	#define CFGFILE_ENDADDR 0x20000 /* board specific, change may be required */		#define CFGFILE_ENDADDR 0x20000 /* board specific, change may be required */
Line 72:		Line 72:
	Defines CFGFILE_STARTADDR and CFGFILE_ENDADDR limit the search range. The function returns 0 if the string was not found. The following example searches section [UART1] in the entire module configuration file:		Defines CFGFILE_STARTADDR and CFGFILE_ENDADDR limit the search range. The function returns 0 if the string was not found. The following example searches section [UART1] in the entire module configuration file:

	<syntaxhighlight ~~lang~~="c">		<syntaxhighlight lexer="c">
	sectionstart = DM2_cfgFindString ("[UART1]", CFGFILE_STARTADDR, CFGFILE_ENDADDR);		sectionstart = DM2_cfgFindString ("[UART1]", CFGFILE_STARTADDR, CFGFILE_ENDADDR);
	</syntaxhighlight>		</syntaxhighlight>
Line 78:		Line 78:
	To search an entry within a section, first define the range by searching the desired section and the next section delimiter, then search the item inside this range		To search an entry within a section, first define the range by searching the desired section and the next section delimiter, then search the item inside this range

	<syntaxhighlight ~~lang~~="c">		<syntaxhighlight lexer="c">
	sectionstart = DM2_cfgFindString ("[UART1]", CFGFILE_STARTADDR, CFGFILE_ENDADDR);		sectionstart = DM2_cfgFindString ("[UART1]", CFGFILE_STARTADDR, CFGFILE_ENDADDR);
	if (sectionstart > 0)		if (sectionstart > 0)

Root: Test

2017-12-15T10:20:05Z

Test

← Older revision		Revision as of 12:20, 15 December 2017
Line 86:		Line 86:
	}		}
	</syntaxhighlight>		</syntaxhighlight>



	[[category:DSP]]		[[category:DSP]]
	[[category:D.Module]]		[[category:D.Module]]

WikiImporter: Pushed from DSignT Issue Database.

2011-03-02T12:49:15Z

Pushed from DSignT Issue Database.

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=== Find an Item in the Module Configuration File ===

<syntaxhighlight lang="c">
#define CFGFILE_STARTADDR 0x10000 /* board specific, change may be required */
#define CFGFILE_ENDADDR 0x20000 /* board specific, change may be required */

/***********************************************************************
@brief find a string in the config file

@param str - string to find
@param start - start address of Config File in Flash
@param end - end address of config File in Flash
@return Flash Address, 0 if string not found

***********************************************************************/
uint32_t DM2_cfgFindString (char *str, uint32_t start, uint32_t end)
{
/*******************************************************************
locals
*******************************************************************/
uint32_t addr = start;
char c;
char *p_str;
uint32_t tempaddr;

/*******************************************************************
read Flash from start to end address until string is found
or end of file
*******************************************************************/
while (1)
{
// if address = end of Config File address range, return (0)
if (addr == end) return (0);

// read Flash
c = DM2_flashRead((void *)addr);

// 0xFF: end of file reached, return (0): section not found
if (c == 0xFF) return (0);

// if comment, skip rest of line
if (c == ';')
{
do
{
if (++addr == end) return (0);
c = DM2_flashRead((void *)addr);
if (c == 0xFF) return (0);
} while (c != 0x0D);
}

// if first character matches, check remaining characters
// if all characters match return address
if (c == *str)
{
p_str = str;
tempaddr = addr;
do
{
p_str++;
tempaddr++;
if (*p_str == 0) return (addr);
if (tempaddr == end) return (0);
c = DM2_flashRead((void *)tempaddr);
} while (c == *p_str);
}
addr++;
}
}
</syntaxhighlight>

Defines CFGFILE_STARTADDR and CFGFILE_ENDADDR limit the search range. The function returns 0 if the string was not found. The following example searches section [UART1] in the entire module configuration file:

<syntaxhighlight lang="c">
sectionstart = DM2_cfgFindString ("[UART1]", CFGFILE_STARTADDR, CFGFILE_ENDADDR);
</syntaxhighlight>

To search an entry within a section, first define the range by searching the desired section and the next section delimiter, then search the item inside this range

<syntaxhighlight lang="c">
sectionstart = DM2_cfgFindString ("[UART1]", CFGFILE_STARTADDR, CFGFILE_ENDADDR);
if (sectionstart > 0)
{
sectionend = DM2_cfgFindString ("[", sectionstart+1, CFGFILE_ENDADDR);
itemaddr = DM2_cfgFindString ("baud rate", sectionstart, sectionend);
}
</syntaxhighlight>

[[category:DSP]]
[[category:D.Module]]