CCS C Software and Maintenance Offers
FAQFAQ   FAQForum Help   FAQOfficial CCS Support   SearchSearch  RegisterRegister 

ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

CCS does not monitor this forum on a regular basis.

Please do not post bug reports on this forum. Send them to support@ccsinfo.com
BYTE and BOOLEAN variables

 
Post new topic   Reply to topic    CCS Forum Index -> General CCS C Discussion
View previous topic :: View next topic  
Author Message
Guest
BYTE and BOOLEAN variables
PostPosted: Mon Sep 29, 2008 12:32 pm     Reply with quote
I'm just playing with the driver lcd.c that comes with PCWH and am struggling with a compiler error that refers to line 64 in lcd.c:

*** Error 91 "C:\PROGRA~1\PICC\drivers\lcd.c" Line 66(6,7): Expression must be a constant or simple variable
*** Error 48 "C:\PROGRA~1\PICC\drivers\lcd.c" Line 66(12,27): Expecting a (
*** Error 43 "C:\PROGRA~1\PICC\drivers\lcd.c" Line 66(28,29): Expecting a declaration
*** Error 43 "C:\PROGRA~1\PICC\drivers\lcd.c" Line 66(29,30): Expecting a declaration
*** Error 43 "C:\PROGRA~1\PICC\drivers\lcd.c" Line 66(31,32): Expecting a declaration
*** Error 43 "C:\PROGRA~1\PICC\drivers\lcd.c" Line 66(33,34): Expecting a declaration
*** Error 43 "C:\PROGRA~1\PICC\drivers\lcd.c" Line 66(34,35): Expecting a declaration
*** Error 43 "C:\PROGRA~1\PICC\drivers\lcd.c" Line 66(35,36): Expecting a declaration
*** Error 43 "C:\PROGRA~1\PICC\drivers\lcd.c" Line 66(37,40): Expecting a declaration
*** Error 43 "C:\PROGRA~1\PICC\drivers\lcd.c" Line 66(40,41): Expecting a declaration
*** Error 43 "C:\PROGRA~1\PICC\drivers\lcd.c" Line 66(42,43): Expecting a declaration
*** Error 43 "C:\PROGRA~1\PICC\drivers\lcd.c" Line 66(43,44): Expecting a declaration
*** Error 43 "C:\PROGRA~1\PICC\drivers\lcd.c" Line 66(45,46): Expecting a declaration
*** Error 43 "C:\PROGRA~1\PICC\drivers\lcd.c" Line 66(46,47): Expecting a declaration
*** Error 43 "C:\PROGRA~1\PICC\drivers\lcd.c" Line 66(47,48): Expecting a declaration
*** Error 12 "C:\PROGRA~1\PICC\drivers\lcd.c" Line 82(29,30): Undefined identifier set_tris_d
*** Error 12 "C:\PROGRA~1\PICC\drivers\lcd.c" Line 94(30,31): Undefined identifier set_tris_d
*** Error 12 "C:\PROGRA~1\PICC\drivers\lcd.c" Line 124(28,29): Undefined identifier set_tris_d
*** Error 12 "C:\PROGRA~1\PICC\drivers\lcd.c" Line 135(24,39): Undefined identifier LCD_INIT_STRING
19 Errors, 0 Warnings.
Halting build on first failure as requested.
BUILD FAILED: Mon Sep 29 19:12:59 2008



The first problem line (64) is:

BYTE const LCD_INIT_STRING[4] = {0x20 | lcd_type << 2, 0xc, 1, 6};

What is BYTE supposed to be, a 'CCS' variable? I'm quite new to this so apologies if I'm being a retard.

Thanks

Andy
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

View user's profile Send private message

PostPosted: Mon Sep 29, 2008 12:50 pm     Reply with quote
Post a very short test program that demonstrates the problem.
It should have the #include for the PIC's .H file, #fuses statement,
#use delay() statement, and the #include for the lcd.c file. It should
have a main().
FvM



Joined: 27 Aug 2008
Posts: 2337
Location: Germany

View user's profile Send private message

PostPosted: Mon Sep 29, 2008 12:56 pm     Reply with quote
The respective exampled as EX_LCDKB.C compiles without error. You can also see that BYTE is type alias for int8, defined in any 18Fxxx.h device file. These kind of error showers are often caused by a single simple syntax error.
peaps



Joined: 15 Sep 2008
Posts: 11
Location: Hemel Hempstead, Hertfordshire, UK

View user's profile Send private message Visit poster's website

PostPosted: Mon Sep 29, 2008 1:03 pm     Reply with quote
Thanks for the quick replies..

The code I am using (attempting to get lcd.c to work) is:

Code:
#include <16f819.h>
#use delay(clock=1000000)
#include <lcd.c>
#fuses INTRC_IO, NOWDT, NOPUT, NOMCLR, NOBROWNOUT, NOCPD
#bit LED = 5.1


void main(void) {

//   set_tris_a(0b00000000);
   setup_oscillator(OSC_1MHZ);
   setup_ccp1(CCP_OFF);
   setup_adc(ADC_OFF);
   setup_adc_ports(NO_ANALOGS);

   LED = 1;
   delay_ms(1000);
   LED = 0;


   lcd_init();

   while(1==1) {
      delay_ms(500);
      LED = 1;
      lcd_putc("\f12345678");
      delay_ms(500);


      lcd_putc("\f********\n--------");
      delay_ms(250);
   }

}


And lcd.c is pretty vanilla:

Code:

struct lcd_pin_map {                 // This structure is overlayed
           BOOLEAN enable;           // on to an I/O port to gain
           BOOLEAN rs;               // access to the LCD pins.
           BOOLEAN rw;               // The bits are allocated from
           BOOLEAN unused;           // low order up.  ENABLE will
           int     data : 4;         // be pin B0.
        } lcd;


#if defined use_portb_lcd
   #locate lcd = getenv("sfr:PORTB")    // This puts the entire structure over the port
   #define set_tris_lcd(x) set_tris_b(x)
#else
   #locate lcd = getenv("sfr:PORTD")    // This puts the entire structure over the port
   #define set_tris_lcd(x) set_tris_d(x)
#endif


#define lcd_type 2           // 0=5x7, 1=5x10, 2=2 lines
#define lcd_line_two 0x40    // LCD RAM address for the second line



BYTE const LCD_INIT_STRING[4] = {0x20 | lcd_type << 2, 0xc, 1, 6};

                             // These bytes need to be sent to the LCD
                             // to start it up.


                             // The following are used for setting
                             // the I/O port direction register.

struct lcd_pin_map const LCD_WRITE = {0,0,0,0,0}; // For write mode all pins are out
struct lcd_pin_map const LCD_READ = {0,0,0,0,15}; // For read mode data pins are in



BYTE lcd_read_byte() {
      BYTE low,high;
      set_tris_lcd(LCD_READ);
      lcd.rw = 1;
      delay_cycles(1);
      lcd.enable = 1;
      delay_cycles(1);
      high = lcd.data;
      lcd.enable = 0;
      delay_cycles(1);
      lcd.enable = 1;
      delay_us(1);
      low = lcd.data;
      lcd.enable = 0;
      set_tris_lcd(LCD_WRITE);
      return( (high<<4) | low);
}


void lcd_send_nibble( BYTE n ) {
      lcd.data = n;
      delay_cycles(1);
      lcd.enable = 1;
      delay_us(2);
      lcd.enable = 0;
}


void lcd_send_byte( BYTE address, BYTE n ) {

      lcd.rs = 0;
      while ( bit_test(lcd_read_byte(),7) ) ;
      lcd.rs = address;
      delay_cycles(1);
      lcd.rw = 0;
      delay_cycles(1);
      lcd.enable = 0;
      lcd_send_nibble(n >> 4);
      lcd_send_nibble(n & 0xf);
}


void lcd_init() {
    BYTE i;
    set_tris_lcd(LCD_WRITE);
    lcd.rs = 0;
    lcd.rw = 0;
    lcd.enable = 0;
    delay_ms(15);
    for(i=1;i<=3;++i) {
       lcd_send_nibble(3);
       delay_ms(5);
    }
    lcd_send_nibble(2);
    for(i=0;i<=3;++i)
       lcd_send_byte(0,LCD_INIT_STRING[i]);
}


void lcd_gotoxy( BYTE x, BYTE y) {
   BYTE address;

   if(y!=1)
     address=lcd_line_two;
   else
     address=0;
   address+=x-1;
   lcd_send_byte(0,0x80|address);
}

void lcd_putc( char c) {
   switch (c) {
     case '\f'   : lcd_send_byte(0,1);
                   delay_ms(2);
                                           break;
     case '\n'   : lcd_gotoxy(1,2);        break;
     case '\b'   : lcd_send_byte(0,0x10);  break;
     default     : lcd_send_byte(1,c);     break;
   }
}

char lcd_getc( BYTE x, BYTE y) {
   char value;

    lcd_gotoxy(x,y);
    while ( bit_test(lcd_read_byte(),7) ); // wait until busy flag is low
    lcd.rs=1;
    value = lcd_read_byte();
    lcd.rs=0;
    return(value);
}
peaps



Joined: 15 Sep 2008
Posts: 11
Location: Hemel Hempstead, Hertfordshire, UK

View user's profile Send private message Visit poster's website

PostPosted: Mon Sep 29, 2008 1:15 pm     Reply with quote
Hmm. I have just added the line:

Code:
#define use_portb_lcd TRUE


And now it compiles. Is it falling over on the line that says:

Code:
#locate lcd = getenv("sfr:PORTD")


because PORTD doesn't exist on a 16F819?

If so, why did it tell me the error was on line 64?
Display posts from previous:   
Post new topic   Reply to topic    CCS Forum Index -> General CCS C Discussion All times are GMT - 6 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group