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about mark's lcd program

 
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muahaha98
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about mark's lcd program
PostPosted: Wed Oct 12, 2005 9:33 am     Reply with quote
I see the marks program and I add the first line -typedef char BYTE- but computer still has a lot of errors which are as

C:\savas\a.c:18:Warning [2058] call of function without prototype
C:\savas\a.c:19:Warning [2058] call of function without prototype
C:\savas\a.c:20:Error [1105] symbol 'PIN_A1' has not been defined
C:\savas\a.c:20:Warning [2058] call of function without prototype
C:\savas\a.c:21:Warning [2058] call of function without prototype
C:\savas\a.c:22:Error [1105] symbol 'PIN_A1' has not been defined
C:\savas\a.c:22:Warning [2058] call of function without prototype

Code:


typedef char BYTE;

#define use_PICDEM2_lcd TRUE


#if defined use_PICDEM2_lcd
   #define  lcd_en  PIN_A1   
   #define  lcd_rw  PIN_A2   
   #define  lcd_rs  PIN_A3   
   #define  lcd_type 2           // 0=5x7, 1=5x10, 2=2 lines
   #define  lcd_line_two 0x40    // LCD RAM address for the second line
   #define  d_cycle 1
#endif

void lcd_send_nibble( BYTE n ) {
   n=n&0x0f; //Strip off the top 4 bits.. This only sends bit 3:0
   output_d(n);
   delay_cycles(d_cycle);
   output_high(lcd_en);
   delay_us(20);
   output_low(lcd_en);
}
   
BYTE lcd_read_byte() {
   BYTE low,high;
   output_high(lcd_rw);
   delay_cycles(d_cycle);
   output_high(lcd_en);
   delay_cycles(d_cycle);
   high = input_d(); //using d0:d3 for 4 bit data bus
   output_low(lcd_en);
   delay_cycles(d_cycle);
   output_high(lcd_en);
   delay_us(1);
   low = input_d(); //using d0:d3 for 4 bit data bus
   output_low(lcd_en);
   return((high<<4) | low);
}
   
void lcd_send_byte( BYTE A0, BYTE n ) {    //A0:  0=instruction, 1=Data
   output_low(lcd_rs);
   while ( bit_test(lcd_read_byte(),7) ) ; // wait until busy flag is low
   if (A0==0){ output_low(lcd_rs);} //0=Instruction  and 1=Data
   if (A0==1){output_high(lcd_rs);} //0=Instruction  and 1=Data
   delay_cycles(d_cycle);
   output_low(lcd_rw);
   delay_cycles(d_cycle);
   output_low(lcd_en);
   lcd_send_nibble(n >> 4);
   lcd_send_nibble(n & 0xf);
}
   
void lcd_init() {
   BYTE const LCD_INIT_STRING[4] = {0x20 | (lcd_type << 2), 0xc, 1, 6};
   // These bytes need to be sent to the LCD for initialization.
   BYTE i;
   //fprintf(debug,"Init!!\n\r");
   output_low(lcd_rs);
   output_low(lcd_rw);
   output_low(lcd_en);
   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 Data;
   if(y!=1)
      Data=lcd_line_two;
   else
      Data=0;
   Data+=x-1;
   lcd_send_byte(0,0x80|Data);
}
   
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
   output_high(lcd_rs);   
   value = lcd_read_byte();
   output_low(lcd_rs);   
   return(value);
}


treitmey



Joined: 23 Jan 2004
Posts: 1094
Location: Appleton,WI USA

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PostPosted: Wed Oct 12, 2005 9:54 am     Reply with quote
This compiles.
you need to have your functions physically before main().
OR use prototypes

Code:
#INCLUDE <18F452.H>
#CASE
#USE DELAY(CLOCK=16000000) //********************************* ! ! ! ! ! !
#FUSES HS,NOWDT,NOPROTECT,NOLVP
#DEFINE VER_MAJOR 0
#DEFINE VER_MINOR 01
#USE RS232(BAUD=19200,XMIT=PIN_E0,INVERT,STREAM=DEBUG)
#ZERO_RAM



#define use_PICDEM2_lcd TRUE


#if defined use_PICDEM2_lcd
   #define  lcd_en  PIN_A1
   #define  lcd_rw  PIN_A2
   #define  lcd_rs  PIN_A3
   #define  lcd_type 2           // 0=5x7, 1=5x10, 2=2 lines
   #define  lcd_line_two 0x40    // LCD RAM address for the second line
   #define  d_cycle 1
#endif
void lcd_send_nibble( BYTE n ) {
   n=n&0x0f; //Strip off the top 4 bits.. This only sends bit 3:0
   output_d(n);
   delay_cycles(d_cycle);
   output_high(lcd_en);
   delay_us(20);
   output_low(lcd_en);
}

BYTE lcd_read_byte() {
   BYTE low,high;
   output_high(lcd_rw);
   delay_cycles(d_cycle);
   output_high(lcd_en);
   delay_cycles(d_cycle);
   high = input_d(); //using d0:d3 for 4 bit data bus
   output_low(lcd_en);
   delay_cycles(d_cycle);
   output_high(lcd_en);
   delay_us(1);
   low = input_d(); //using d0:d3 for 4 bit data bus
   output_low(lcd_en);
   return((high<<4) | low);
}

void lcd_send_byte( BYTE A0, BYTE n ) {    //A0:  0=instruction, 1=Data
   output_low(lcd_rs);
   while ( bit_test(lcd_read_byte(),7) ) ; // wait until busy flag is low
   if (A0==0){ output_low(lcd_rs);} //0=Instruction  and 1=Data
   if (A0==1){output_high(lcd_rs);} //0=Instruction  and 1=Data
   delay_cycles(d_cycle);
   output_low(lcd_rw);
   delay_cycles(d_cycle);
   output_low(lcd_en);
   lcd_send_nibble(n >> 4);
   lcd_send_nibble(n & 0xf);
}

void lcd_init() {
   BYTE const LCD_INIT_STRING[4] = {0x20 | (lcd_type << 2), 0xc, 1, 6};
   // These bytes need to be sent to the LCD for initialization.
   BYTE i;
   //fprintf(debug,"Init!!\n\r");
   output_low(lcd_rs);
   output_low(lcd_rw);
   output_low(lcd_en);
   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 Data;
   if(y!=1)
      Data=lcd_line_two;
   else
      Data=0;
   Data+=x-1;
   lcd_send_byte(0,0x80|Data);
}

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
   output_high(lcd_rs);
   value = lcd_read_byte();
   output_low(lcd_rs);
   return(value);
}
void main(void)
{
  setup_adc_ports(NO_ANALOGS);
  set_tris_a(0);set_tris_b(0);set_tris_c(0);set_tris_d(0);set_tris_e(0);

  fprintf(DEBUG,"STARTING CRI Test.\n\r");
  fprintf(DEBUG,"FIRMWARE VERSION %u.%02u\n\r",VER_MAJOR,VER_MINOR);
  lcd_init();
  printf(lcd_putc,"FIRMWARE VERSION %u.%02u\n\r",VER_MAJOR,VER_MINOR);

  while (TRUE)
  {
  }
}
muahaha98
Guest
to treitmey
PostPosted: Wed Oct 12, 2005 10:11 am     Reply with quote
I added these codes which you said

but computer still systax error

Executing: "c:\mcc18\bin\mcc18.exe" -p=18F452 "a.c" -fo="a.o" /i"C:\mcc18\h" -Ou- -Ot- -Ob- -Op- -Or- -Od- -Opa-
C:\savas\a.c:1:Error: syntax error
Halting build on first failure as requested.
[/code]
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Wed Oct 12, 2005 10:17 am     Reply with quote
You need to buy the CCS compiler to use code that has CCS functions.

You can't use code that calls built-in CCS functions with the C18 compiler.
muahaha98
Guest
which compiler?
PostPosted: Wed Oct 12, 2005 10:26 am     Reply with quote
which compiler shoolud is used?

please tell programm ne?
Mark



Joined: 07 Sep 2003
Posts: 2838
Location: Atlanta, GA

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PostPosted: Wed Oct 12, 2005 11:01 am     Reply with quote
C18 has their own LCD functions.
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