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hadeelqasaimeh
Joined: 05 Jan 2006
Posts: 105
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| strange problem with out data parallel on port |
 Posted: Thu Mar 29, 2007 5:27 pm |
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hi all
i have strange problem with port D.its never out the value and still dead!!!
here is my code:
| Code: |
#include <16f877a.h>
#include "lcd_kbd1.c"
#include <string.h>
#fuses XT,NOWDT,NOLVP
#use delay(clock=4000000)
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7)
#byte tris_d =0x00
static char RX[45] ,NUM[10],CMD[10];
static char S1[5],S2[5],S3[5],S4[5],S5[5],S6[5],S7[5],S8[5],S9[5],C[5];
static int1 flag,k;
static int8 i,n,f,t;
static int8 rank1,rank2,rank3,rank4;
static int8 M1,M2,M3,M4;
#int_rda
void serial_isr() {
RX[i++]=getch();
flag=1;
k=0;
}
void main() {
flag=0;
k=0;
M1=0X01;
M2=0X02;
M3=0X03;
M4=0X04;
strcpy(S1,"*");
strcpy(S2,"$");
strcpy(S3,"&");
strcpy(S4,"#");
strcpy(S5,"1");
strcpy(S6,"2");
strcpy(S7,"3");
strcpy(S8,"4");
strcpy(S9,"OK");
strcpy(C,"0x1a");
LCD_Init ( );
enable_interrupts(GLOBAL);
enable_interrupts(INT_RDA);
LCD_PutCmd ( CLEAR_DISP );
while(1)
{
if((flag==0) && (k==0)) {
output_d(0x00);
LCD_PutCmd ( CLEAR_DISP );
LCD_SetPosition ( LINE_16_1);
printf(LCD_PutChar,"NUM:");
LCD_SetPosition ( LINE_16_2);
printf(LCD_PutChar,"%s",NUM);
delay_ms(1000);
LCD_PutCmd ( CLEAR_DISP );
LCD_SetPosition ( LINE_16_1);
printf(LCD_PutChar,"CMD:");
LCD_SetPosition ( LINE_16_2);
printf(LCD_PutChar,"%s",CMD);
delay_ms(2000);
}
if(flag==1) {
////////////////////////GET NUM//////////////////////////
respons:
n=0;
rank1=strcspn(RX, S1);
rank2=strcspn(RX, S2);
for(i=(rank1+1);i<(rank2);i++) {
NUM[n]=RX[i];
n++;
}//for
/////////////////////GET CMD/////////////////////////////////
f=0;
rank3=strcspn(RX, S3);
rank4=strcspn(RX, S4);
for(i=(rank3+1);i<(rank4);i++) {
CMD[f]=RX[i];
f++;
}//for
if(!strcmp(NUM, S6)) {
goto next;
}
else
if(!strcmp(NUM, S5)) {
goto end;
}
next:
if(!strcmp(CMD, S6)) {
output_d(M1);
delay_ms(3000);
flag=0;
k=1;
while(flag==0)
{
}//wait response
goto respons;
//wait response
}
else
if(!strcmp(CMD, S7)) {
output_d(M2);
delay_ms(3000);
flag=0;
k=1;
while(flag==0)
{
}//wait response
goto respons;
//wait response
}
else
if(!strcmp(CMD, S8)) {
output_d(M3);
delay_ms(3000);
k=1;
flag=0;
while(flag==0)
{
}//wait response
goto respons;
//wait response
}
else
if(!strcmp(CMD, S9)) {
output_d(M4);
delay_ms(3000);
k=1;
flag=0;
while(flag==0)
{
}//wait response
goto respons;
//wait response
}
end:
n=0;
rank1=0;
rank2=strlen(RX);
for(i=(rank1+1);i<(rank2);i++) {
RX[n]=0;
n++;
}//clear
output_d(0x00);
delay_ms(3000);
k=0;
flag=0;
i=0;
}//if
}//while
}//MAIN
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every thin work fine,receive string ,analyze, display,except out data on port d!!!i try to chang to port b,or a,and same problem face me.
then i try to make a subroutine like this:
| Code: |
void set_port( int );
void set_port(int M)
{
set_tris_d(0x00);
output_d(M);
delay_ms(3000);
}
|
instead of out data directly,,,but nothing change,,help plz
not:my ccs version is 3.249
thank you all |
|
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Thu Mar 29, 2007 5:47 pm |
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Try the test program shown below. It should toggle Port D between
0x00 and 0xFF. This will tell you if your compiler and your hardware
is working OK.
| Code: |
#include <16F877A.H>
#fuses XT, NOWDT, NOLVP
#use delay(clock=4000000)
//==========================
void main()
{
while(1)
{
output_d(0xFF);
delay_ms(500);
output_d(0x00);
delay_ms(500);
}
} |
Also, you have this line in your program. You're not using it, but I
wonder if you have tried to use it ? It's completely wrong.
| Quote: | | #byte tris_d =0x00 |
The #byte directive is used to tell the compiler the address of
the register. It's not used to set the value. The address of the TRISD
register is 0x88. You can find it in the 16F877A data sheet.
The line should look like this:
| Code: | | #byte tris_d = 0x88 |
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hadeelqasaimeh
Joined: 05 Jan 2006
Posts: 105
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| Posted: Fri Mar 30, 2007 11:58 am |
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hi pcm
i try it and it work perfectly both on simulation and on hardware>
i try to use output_high(pin_d0) and output_low(pin_d0) but still not work |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Fri Mar 30, 2007 1:44 pm |
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| Quote: | | I try to use output_high(pin_d0) and output_low(pin_d0) but still not work |
Make a short test program (similar to the one I did above) that tests
those two lines of code. If it doesn't work, then post it and I'll test it. |
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hadeelqasaimeh
Joined: 05 Jan 2006
Posts: 105
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| Posted: Sat Mar 31, 2007 3:31 pm |
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thank you  |
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