code-comp | Re: [c6x] How to prepare a data for use with probe in CCS

The .dat file should have some header info. The header would indicate to the probe, the format of the data stored in the dat file. It can be any one of: Hexadecimal, Integer, Long and Float.

--Bhooshan

From CCS user manual:

The header information for data files uses the following syntax:

MagicNumber Format StartingAddress PageNum Length
MagicNumber Fixed at 1651.
Format A number from 1 to 4, indicating the format of the samples in the file. This number represents a data format: hexadecimal, integer, long, or float.
StartingAddress The starting address of the block that was saved.
PageNum The page number the block was taken from.
Length The number of samples in the block.

All header values are assumed to be TI-style hexadecimal values.
The following is an example of a Code Composer Studio data file:

1651 1 800 1 10
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000

Note that CCS expects 5 digit numbers of information to read in 4-digit values. While the data is known to be hexadecimal, CCS expects the first digit to be a zero. CCS does this so that hex numbers beginning with letters (ie. F800) are not misread as labels. For example: when reading data in hexadecimal format from a data file, the first digit may be truncated. Look at this input data:

0022
0022
0033
8AC
FC94
13
895
AB9 ...

When reading this data, CCS will actually read it as:

0022
0033
08AC
0C94
0003
0095
00B9 ...

But if you test Code Composer Studio with five-digit data input, (by adding zeroes at the beginning where necessary), the output will be consistent with the input:

00022
00033
018AC
0FC94
00013
00895
00AB9

Note: Header values specify only the default address and length. When you use the File®Data
®Load command to load a file into memory, the Code Composer Studio debugger gives you a chance to override these values. When using the Code Composer Studio data file format with file I/O capabilities, any information you enter in the File I/O dialog box (Address and Length) automatically overrides the Code Composer Studio data file header information. You do not need to set the header information for each file as long as the header includes the following value: 1651 1 0 0 0.

On 8/23/05, Li Bing <l...@stee.stengg.com> wrote:

HI, DSP friends

This is first time I am using probe in my code. A problem confused me.

I want to prepare a data file for my application, and use this file with a
probe point to input data to a buffer. My code will be like following. I
prepared a data set including 8 integer, but by running the code I found
only the secod 2 data and last 2 data is inputted into buffer, the code is
running with 2 loops instead of 4. Anybod can give me some hint?
int in_buffer[2];
static void dataIO( );
void main(void)
{
while (1)
{
dataIO( ); /*probe point set here */
/* my other code below */
}
}

static void dataIO( )
{
return;

}
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Reply by Li Bing ●August 23, 20052005-08-23

HI, DSP friends This is first time I am using probe in my code. A problem confused me. I want to prepare a data file for my application, and use this file with a probe point to input data to a buffer. My code will be like following. I prepared a data set including 8 integer, but by running the code I found only the secod 2 data and last 2 data is inputted into buffer, the code is running with 2 loops instead of 4. Anybod can give me some hint? int in_buffer[2]; static void dataIO( ); void main(void) { while (1) { dataIO( ); /*probe point set here */ /* my other code below */ } } static void dataIO( ) { return; }

Reply by Li Bing ●August 24, 20052005-08-24

HI, Bhooshan Thanks for your reply, I have went through CCS manual, but still can not get the result. My code is as following, and I also attached the .dat. for you to try. You can see that the data is 1,2,3,4,5,6,7,8,9,, I expect that each time by probe point 3 data will be inputted into in_buffer. But the result is following, very strange. Could you please give me further help? Thank you again. This is No.1 data input in_buffer[0]=2 in_buffer[1]=3 in_buffer[2]=4 This is No.2 data input in_buffer[0]=8 in_buffer[1]=9 in_buffer[2]=0 This is No.3 data input in_buffer[0]=0 in_buffer[1]=0 in_buffer[2]=0 This is No.4 data input in_buffer[0]=0 in_buffer[1]=0 in_buffer[2]=0 #include <stdio.h> #include <stdlib.h> #include <math.h> /*Global declaration */ int in_buffer[3]; int out_buffer[3]; #define TRUE 1 /*Function */ static void dataIO(void); /*----- Main program ----- */ void main() { int *input = &in_buffer[0]; /* input pointer */ int *output = &out_buffer[0]; /* output pointer */ int p=0; int i; while(TRUE) { p++; dataIO(); /* probe point is set here connected with .dat */ printf("This is No.%d data input\n",p); for (i=0;i<3;i++) { printf("in_buffer[%d]=%d\n",i,in_buffer[i]); } } } /* dataIO - function for data I/O */ static void dataIO () { return; } -----Original Message----- From: Bhooshan Iyer [SMTP:bhooshaniyer@bhoo...] Sent: Tuesday, August 23, 2005 11:35 PM To: libing@libi... Cc: C64x; ccs Subject: [code-comp] Re: [c6x] How to prepare a data for use with probe in CCS The .dat file should have some header info. The header would indicate to the probe, the format of the data stored in the dat file. It can be any one of: Hexadecimal, Integer, Long and Float. --Bhooshan From CCS user manual: The header information for data files uses the following syntax: MagicNumber Format StartingAddress PageNum Length MagicNumber Fixed at 1651. Format A number from 1 to 4, indicating the format of the samples in the file. This number represents a data format: hexadecimal, integer, long, or float. StartingAddress The starting address of the block that was saved. PageNum The page number the block was taken from. Length The number of samples in the block. All header values are assumed to be TI-style hexadecimal values. The following is an example of a Code Composer Studio data file: 1651 1 800 1 10 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 Note that CCS expects 5 digit numbers of information to read in 4-digit values. While the data is known to be hexadecimal, CCS expects the first digit to be a zero. CCS does this so that hex numbers beginning with letters (ie. F800) are not misread as labels. For example: when reading data in hexadecimal format from a data file, the first digit may be truncated. Look at this input data: 0022 0022 0033 8AC FC94 13 895 AB9 ... When reading this data, CCS will actually read it as: 0022 0033 08AC 0C94 0003 0095 00B9 ... But if you test Code Composer Studio with five-digit data input, (by adding zeroes at the beginning where necessary), the output will be consistent with the input: 00022 00033 018AC 0FC94 00013 00895 00AB9 Note: Header values specify only the default address and length. When you use the File(r)Data (r)Load command to load a file into memory, the Code Composer Studio debugger gives you a chance to override these values. When using the Code Composer Studio data file format with file I/O capabilities, any information you enter in the File I/O dialog box (Address and Length) automatically overrides the Code Composer Studio data file header information. You do not need to set the header information for each file as long as the header includes the following value: 1651 1 0 0 0. On 8/23/05, Li Bing <libing@libi...> wrote: > > HI, DSP friends > > This is first time I am using probe in my code. A problem confused me. > > I want to prepare a data file for my application, and use this file with a > probe point to input data to a buffer. My code will be like following. I > prepared a data set including 8 integer, but by running the code I found > only the secod 2 data and last 2 data is inputted into buffer, the code is > running with 2 loops instead of 4. Anybod can give me some hint? > > int in_buffer[2]; > static void dataIO( ); > void main(void) > { > while (1) > { > dataIO( ); /*probe point set here */ > /* my other code below */ > > } > } > > static void dataIO( ) > { > return; > > }

Re: [c6x] How to prepare a data for use with probe in CCS

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