printf("%wt",varname) doubt

[Bomba]

I'm using the next variable (reg_canales):

struct canales
{
int Cont[2];
short DI;
int Reg;
long Moves;
long Error;
}reg_canales [4];

I want to send the data through RS-232, but I don't know how to send a variable type long.
I tried that:
printf(%2LX%2LX",aux,reg_canales[canal].Moves,reg_canales[canal].Error);

Could anybody of you help me?
Thanks in advance

[rwyoung]

[Bomba]

I don't understand, because i want to send through rs-232 only the value in the memory, I�m not interested in the representation.... The only things that i understood that i don�t understand the statement printf . Could you explain me or recommend something to read that open my main.
Well I'm using ccsv3.181 and to simulate proteus 6.3sp1, to visualises the output rs-232 I�m using the virtual terminal. For example if the number allocated into memory like long type is 0x0000, using the sentence that you provided me, I see in the virtual terminal 90 90 90 90

Thanks

[rwyoung]

From the CCS manual:

PRINTF( )
FPRINTF PRINTFFPRINTF()

Syntax:
printf (string)

or

printf (cstring, values...)

or

printf (fname, cstring, values...)

fprintf (stream, cstring, values...)


Parameters:
String is a constant string or an array of characters null terminated. Values is a list of variables separated by commas, fname is a function name to be used for outputting (default is putc is none is specified). Stream is a stream identifier (a constant byte)

Returns:
undefined

Function:
Outputs a string of characters to either the standard RS-232 pins (first two forms) or to a specified function. Formatting is in accordance with the string argument. When variables are used this string must be a constant. The % character is used within the string to indicate a variable value is to be formatted and output. Longs in the printf may be 16 or 32 bit. A %% will output a single %. Formatting rules for the % follows.

If fprintf() is used then the specified stream is used where printf() defaults to STDOUT (the last USE RS232).

Format:

The format takes the generic form %wt where w is optional and may be 1-9 to specify how many characters are to be outputted, or 01-09 to indicate leading zeros or 1.1 to 9.9 for floating point. t is the type and may be one of the following:

C Character
S String or character
U Unsigned int
x Hex int (lower case output)
X Hex int (upper case output)
D Signed int
e Float in exp format
f Float
Lx Hex long int (lower case)
LX Hex long int (upper case)
lu unsigned decimal long
ld signed decimal long
% Just a %

Example formats:

Specifier
Value=0x12 Value=0xfe

%03u 018 254
%u 18 254
%2u 18 *
%5 18 254
%d 18 -2
%x 12 Fe
%X 12 FE
%4X 0012 00FE

* Result is undefined - Assume garbage.

Availability:
All Devices

Requires
#use rs232 (unless fname is used)

Examples:
byte x,y,z;

printf("HiThere");

printf("RTCCValue=>%2x\n\r",get_rtcc());

printf("%2u %X %4X\n\r",x,y,z);

printf(LCD_PUTC, "n=%u",n);

Example Files:
ex_admm.c, ex_lcdkb.c

Also See:
atoi(), puts(), putc(), getc() (for a stream example)


You string contained "%2LX" which means print a long integer in hex format using capital letters and only allow 2 characters. Depending on the implementation of printf and the compiler this would either be allowed or flagged with a warning. I think CCS allows it even though a long integer is 16 bits in the CCS compiler and would need 4 characters to properly display.

If you don't want to see the ASCII text representing you number but rather want exactly what is in memory then don't use printf. Use putc or fputc. In the case of a long int, you will need to combine the putc with make8

[Bomba]

well I prove all that you say, but the data that I see in the virtual terminal still showing wrong.
Maybe is something asociated qith prooteus 6.3sp1 virtual terminal, or with the pic16f84a.

Please see them:

#include <16F84A.h>
#use delay(clock=18432000)
#fuses NOWDT,HS, PUT, NOPROTECT
#use rs232(baud=9600,parity=N,xmit=PIN_A2,rcv=PIN_A3,bits=8,stream=OUT232)

#use fast_io(B)
#zero_ram

struct canales
{
int Cont[2];
short DI;
int Reg;
long Moves;
long Error;
}reg_canales [4];

void Verificar(int canal)
{
int aux=0;

if (reg_canales[canal].Reg==Vuelta)
{
if (reg_canales[canal].DI) aux=252;
aux|=canal;
putc(aux);
putc(make8(reg_canales[canal].Moves,0));
putc(make8(reg_canales[canal].Moves,1));
reg_canales[canal].Reg=0;
reg_canales[canal].Moves=0;
reg_canales[canal].Error=0;
}
}


where canal = 0 to 3

well I'm thinking now that maybe the problem is in virtual terminal....

thank you for all...

[rwyoung]

I don't have a PIC16F84 to test with so I used one of my PIC16F877A parts and tested this code:

[Bomba]

Dear rwyoung:

Well; I couldn�t believe, the errors was differences between the clock setting in the #use delay CCS, and the clock setting in proteus PIC. I spent 2 days with this....


Thanks you very much for your time....