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ganyfun
Joined: 25 Mar 2010
Posts: 4
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| Problem with keypad 4*4 |
 Posted: Thu Mar 25, 2010 3:01 am |
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I'm having problems in compiling the key pad functions keypad.c 4 * 4. I use this function written by PCM programmer. I compiled the following error, please help me find the wrong reasons:
| Quote: |
The target "C: \ projectA \ project glcd \ GLCD.o" is already up to date.
Executing: "C: \ Program Files \ PICC \ CCSC.exe" + FM "main.c" + EXPORT + DF + LN + T + A + M + Z + Y = 9 + EA
*** Error 23 "C: \ PROGRA ~ 1 \ PICC \ devices \ 16F876A.h" Line 2 (8.9): Can not change device type this far into the code
*** Error 48 "C: \ PROGRA ~ 1 \ PICC \ devices \ 16F876A.h" Line 152 (1.23): Expecting a (
*** Error 48 "C: \ PROGRA ~ 1 \ PICC \ devices \ 16F876A.h" Line 152 (6.11): Expecting a (
--- Info 300 "C: \ PROGRA ~ 1 \ PICC \ devices \ 16F876A.h" Line 156 (6.11): More info: First Declaration of CCP_2
*** Error 31 "C: \ PROGRA ~ 1 \ PICC \ devices \ 16F876A.h" Line 156 (6.11): Identifier is already used in this scope
D: \ projectA \ project glcd \ main.o ===> 4 Errors, 0 Warnings.
Halting build on first failure as requested.
BUILD FAILED: |
Below is the program:
| Code: |
//here is function keypad.c
#define row0 PIN_B4
#define row1 PIN_B5
#define row2 PIN_B6
#define row3 PIN_B7
#define col0 PIN_B0
#define col1 PIN_B1
#define col2 PIN_B2
#define col3 PIN_B3
// Keypad layout:
char const KEYS[4][4] =
{{'1','2','3','A'},
{'4','5','6','B'},
{'7','8','9','C'},
{'*','0','#','D'}};
#define KBD_DEBOUNCE_FACTOR 33 // Set this number to apx n/333 where
// n is the number of times you expect
// to call kbd_getc each second
void kbd_init()
{
//set_tris_b(0xF0);
//output_b(0xF0);
port_b_pullups(true);
}
short int ALL_ROWS (void)
{
if(input (row0) & input (row1) & input (row2) & input (row3))
return (0);
else
return (1);
}
char kbd_getc()
{
static byte kbd_call_count;
static short int kbd_down;
static char last_key;
static byte col;
byte kchar;
byte row;
kchar='\0';
if(++kbd_call_count>KBD_DEBOUNCE_FACTOR)
{
switch (col)
{
case 0:
output_low(col0);
output_high(col1);
output_high(col2);
output_high(col3);
break;
case 1:
output_high(col0);
output_low(col1);
output_high(col2);
output_high(col3);
break;
case 2:
output_high(col0);
output_high(col1);
output_low(col2);
output_high(col3);
break;
case 3:
output_high(col0);
output_high(col1);
output_high(col2);
output_low(col3);
break;
}
if(kbd_down)
{
if(!ALL_ROWS())
{
kbd_down=false;
kchar=last_key;
last_key='\0';
}
}
else
{
if(ALL_ROWS())
{
if(!input (row0))
row=0;
else if(!input (row1))
row=1;
else if(!input (row2))
row=2;
else if(!input (row3))
row=3;
last_key =KEYS[row][col];
kbd_down = true;
}
else
{
++col;
if(col==4)
col=0;
}
}
kbd_call_count=0;
}
return(kchar);
}
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| Code: | //here is main program
#include <16F876A.h>
#include <GLCD.C>
#include <keypad.c>
#fuses HS,NOWDT,NOPROTECT,NOLVP
#use delay(clock=12000000)
void main()
{
char k;
char text1[3][25]={"hello world ","try to do","I must be susscess"};
glcd_init(ON);
kbd_init();
while(TRUE)
{
k=kbd_getc();
if(k!=0)
{
if(k=='*')
glcd_text57(0, 0, text1[0], 1, ON);
else
glcd_text57(0, 8, text1[1], 1, ON);
}
}
}
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CCSC 4.057, and I use to write programs Mplab 8.43 communication with keypad 4 * 4. The compiler error is in driver 16F876A.h.
Thank you very much. |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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ganyfun
Joined: 25 Mar 2010
Posts: 4
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| Posted: Thu Mar 25, 2010 6:54 pm |
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thank you very much!
I understand some things from your help. You can write your mail to some things does not know I can mail to ask you ? Thank you PCM Programmer |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Thu Mar 25, 2010 10:44 pm |
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It's better if you ask questions in this forum. Then everyone can
give an answer. |
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ganyfun
Joined: 25 Mar 2010
Posts: 4
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| Posted: Sun Mar 28, 2010 3:27 am |
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| I compile successfully but when I download bitstream into microprocessor to display a line of text on screen of GLCD is not . It does not display as I want, do not show anything. PCM programmer can help me understand the cause is not. I want to test the code on the keypad for use in my module. Hope you help, thanks a lot! |
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