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Eng.Nidal
Joined: 06 Jul 2016
Posts: 4
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| ADC problem in pic c compiler v5.015 |
 Posted: Wed Jul 06, 2016 2:29 pm |
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hi all
I'm always used to program my pic16f877a chip using pic c compiler v4.084 then a decided to install pic c compiler v5.015 which i found it easy to use especially it does not always need external library.
but
I have faced a problem in reading analogue signal. It does not read correctly, that happens if i compiled the code using v5.015 but if compiled the code using v4.084 the problem disappears.
i'm looking forward hopefully to find an answer for this problem because i'm not very expert on using ccs.
thanks a lot |
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temtronic
Joined: 01 Jul 2010
Posts: 9228
Location: Greensville,Ontario
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| Posted: Wed Jul 06, 2016 4:28 pm |
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You should post a small, compilable progam that fails. that way, we can 'cut/paste/compile/test' and quickly report back the results.
Also are you using MPLAB, if so version ??
Others will know if there's a 'bug'...
Jay |
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asmboy
Joined: 20 Nov 2007
Posts: 2128
Location: albany ny
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| Posted: Wed Jul 06, 2016 9:06 pm |
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5.015 is a VERY early v 5 release
buy the latest update. that ought to fix it too. |
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Eng.Nidal
Joined: 06 Jul 2016
Posts: 4
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| Posted: Thu Jul 07, 2016 12:51 am |
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this is the code its very simple as you can see
it works but not giving any right values
#include <main.h>
#define LCD_ENABLE_PIN PIN_B0
#define LCD_RS_PIN PIN_B1
#define LCD_RW_PIN PIN_B2
#define LCD_DATA4 PIN_B3
#define LCD_DATA5 PIN_B4
#define LCD_DATA6 PIN_B5
#define LCD_DATA7 PIN_B6
#include <lcd.c>
void main()
{byte value;
setup_adc_ports(AN0);
setup_adc(ADC_CLOCK_INTERNAL);
lcd_init();
while(TRUE)
{set_adc_channel(0);
value=read_adc();
output_c(value);
lcd_gotoxy(3,1);
printf(lcd_putc,"%u",value);
}
}code] |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19516
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| Posted: Thu Jul 07, 2016 1:42 am |
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| Quote: | | especially it does not always need external library. |
V5, is _exactly the same as V4_, in regards to 'libraries'.
There is no such thing as a 'library' really in CCS.
You _need_ to be loading the include file(s) for the compiler version you are using, and the functions you want.
You very carefully do not show the file that loads these (main.h......).
Duh...
Now several comments:
1) ADC_CLOCK_INTERNAL, is almost certainly wrong _on every compiler version_. This is using the RC internal clock, _which the hardware does not recommend at clock rates above 1MHz_. Read the data sheet.
So, _wrong_....
It'll work, but give noisy ADC results. However since you seem to only be using the ADC as 8bit, this may well be acceptable.
2) You don't show us what ADC resolution you are selecting, but since you read the ADC into an 8bit value, hopefully the top of main.h, has:
| Code: |
#include <16F877a.h> //This needs to be including the V5 version
#device ADC=8 //Otherwise it is not going to give correct results....
//Then you don't show us your clock rate settings or fuses.....
|
3) 5.015!.... This is a very early V5 version. There is a fault in this version that it will disable global interrupts with printf. Since you are not using interrupts, probably won't matter, but this is really before a properly working version of V5. It's 'borderline'. Post V5.012, 90% of major stuff was running....
4) There is a major difference with V5, in that it leaves some fuses set as the chip defaults. V4, will instead set some fuses to 'probably working' values. Since you don't show us your fuses, this may well be why you are having problems.
5) The most likely problem is that you are using V4 include files with the V5 compiler.
So you need to show us the full program, not just 'your code'.
I've taken your posting, corrected the clock settings, and assumed a 10MHz crystal:
| Code: |
#include <16F877a.h> //This needs to be including the V5 version of this file
#device ADC=8 //8bit ADC operation
#fuses NOWDT, NOLVP, NODEBUG, BROWNOUT //Minimum fuses
#use delay(crystal=10MHz) //This is selecting HS
#define LCD_ENABLE_PIN PIN_B0
#define LCD_RS_PIN PIN_B1
#define LCD_RW_PIN PIN_B2
#define LCD_DATA4 PIN_B3
#define LCD_DATA5 PIN_B4
#define LCD_DATA6 PIN_B5
#define LCD_DATA7 PIN_B6
#include <lcd.c>
void main(void)
{
byte value;
delay_ms(500); //allow time for the LCD to start
setup_comparator(NC_NC_NC_NC); //ensure comparator is off
setup_adc_ports(AN0); //AN0 only VSS to VDD as reference
setup_adc(ADC_CLOCK_DIV_32); //correct clock setting for up to 20MHz
lcd_init();
set_adc_channel(0); //since only using one ADC channel select it here
delay_us(10); //There must _always_ be at least Tacq between channel
//select and read.....
while(TRUE)
{
value=read_adc(); //now read value
output_c(value); //output on port C
lcd_gotoxy(3,1);
printf(lcd_putc,"%u ",value); //and display
delay_ms(200); //LCD only supports about 4Hz refresh
}
}
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This merrily works, and gives a nice stable output. Added a couple of trailing spaces on the LCD output, otherwise if the value reduces, you get the old numbers still on the display, since there is no clear screen operation. |
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Eng.Nidal
Joined: 06 Jul 2016
Posts: 4
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| Posted: Thu Jul 07, 2016 9:20 am |
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I'm afraid to tell you that your code did not complete compiling. I don't know what i'm missing also in my program.
I'm still a beginner CCS programmer so some times i find some things are suspicious to me such as (fuses).
i really appreciate your help, i hope these are what you asked for from my program.
| Code: |
#include <16F877A.h>
#device ADC=16
#FUSES NOWDT //No Watch Dog Timer
#FUSES NOBROWNOUT //No brownout reset
#FUSES NOLVP //No low voltage prgming, B3(PIC16) or B5(PIC18) used for I/O
#use delay(crystal=20000000)
|
| Code: |
ROM used: 481 words (6%)
Largest free fragment is 2048
RAM used: 7 (2%) at main() level
20 (5%) worst case
Stack used: 5 locations
Stack size: 8
*
0000: MOVLW 01
0001: MOVWF 0A
0002: GOTO 1A7
0003: NOP
.................... #include <main.h>
.................... #include <16F877A.h>
.................... //////////// Standard Header file for the PIC16F877A device ////////////////
.................... ///////////////////////////////////////////////////////////////////////////
.................... //// (C) Copyright 1996, 2013 Custom Computer Services ////
.................... //// This source code may only be used by licensed users of the CCS C ////
.................... //// compiler. This source code may only be distributed to other ////
.................... //// licensed users of the CCS C compiler. No other use, reproduction ////
.................... //// or distribution is permitted without written permission. ////
.................... //// Derivative programs created using this software in object code ////
.................... //// form are not restricted in any way. ////
.................... ///////////////////////////////////////////////////////////////////////////
.................... #device PIC16F877A
*
012F: MOVF 25,W
0130: CLRF 78
0131: SUBWF 24,W
0132: BTFSC 03.0
0133: GOTO 137
0134: MOVF 24,W
0135: MOVWF 77
0136: GOTO 143
0137: CLRF 77
0138: MOVLW 08
0139: MOVWF 26
013A: RLF 24,F
013B: RLF 77,F
013C: MOVF 25,W
013D: SUBWF 77,W
013E: BTFSC 03.0
013F: MOVWF 77
0140: RLF 78,F
0141: DECFSZ 26,F
0142: GOTO 13A
0143: RETURN
*
0170: MOVF 78,W
0171: MOVF 22,W
0172: MOVWF 24
0173: MOVLW 64
0174: MOVWF 25
0175: CALL 12F
0176: MOVF 77,W
0177: MOVWF 22
0178: MOVF 78,W
0179: MOVLW 30
017A: BTFSS 03.2
017B: GOTO 183
017C: BTFSS 23.1
017D: GOTO 18A
017E: BTFSC 23.3
017F: GOTO 18A
0180: BTFSC 23.4
0181: MOVLW 20
0182: GOTO 186
0183: BCF 23.3
0184: BCF 23.4
0185: BSF 23.0
0186: ADDWF 78,F
0187: MOVF 78,W
0188: MOVWF 24
0189: CALL 144
018A: MOVF 22,W
018B: MOVWF 24
018C: MOVLW 0A
018D: MOVWF 25
018E: CALL 12F
018F: MOVF 77,W
0190: MOVWF 22
0191: MOVF 78,W
0192: MOVLW 30
0193: BTFSS 03.2
0194: GOTO 19B
0195: BTFSC 23.3
0196: GOTO 19F
0197: BTFSS 23.0
0198: GOTO 19F
0199: BTFSC 23.4
019A: MOVLW 20
019B: ADDWF 78,F
019C: MOVF 78,W
019D: MOVWF 24
019E: CALL 144
019F: MOVLW 30
01A0: ADDWF 22,F
01A1: MOVF 22,W
01A2: MOVWF 24
01A3: CALL 144
01A4: BCF 0A.3
01A5: BCF 0A.4
01A6: GOTO 1DF (RETURN)
....................
.................... #list
....................
.................... #device ADC=16
....................
.................... #FUSES NOWDT //No Watch Dog Timer
.................... #FUSES NOBROWNOUT //No brownout reset
.................... #FUSES NOLVP //No low voltage prgming, B3(PIC16) or B5(PIC18) used for I/O
....................
.................... #use delay(crystal=20000000)
*
0004: MOVLW 27
0005: MOVWF 04
0006: BCF 03.7
0007: MOVF 00,W
0008: BTFSC 03.2
0009: GOTO 017
000A: MOVLW 06
000B: MOVWF 78
000C: CLRF 77
000D: DECFSZ 77,F
000E: GOTO 00D
000F: DECFSZ 78,F
0010: GOTO 00C
0011: MOVLW 7B
0012: MOVWF 77
0013: DECFSZ 77,F
0014: GOTO 013
0015: DECFSZ 00,F
0016: GOTO 00A
0017: RETURN
....................
....................
....................
.................... #define LCD_ENABLE_PIN PIN_B0
.................... #define LCD_RS_PIN PIN_B1
.................... #define LCD_RW_PIN PIN_B2
.................... #define LCD_DATA4 PIN_B3
.................... #define LCD_DATA5 PIN_B4
.................... #define LCD_DATA6 PIN_B5
.................... #define LCD_DATA7 PIN_B6
....................
.................... #include <lcd.c>
.................... ///////////////////////////////////////////////////////////////////////////////
.................... //// LCD.C ////
.................... //// Driver for common LCD modules ////
.................... //// ////
.................... //// lcd_init() Must be called before any other function. ////
.................... //// ////
.................... //// lcd_putc(c) Will display c on the next position of the LCD. ////
.................... //// \a Set cursor position to upper left ////
.................... //// \f Clear display, set cursor to upper left ////
.................... //// \n Go to start of second line ////
.................... //// \b Move back one position ////
.................... //// If LCD_EXTENDED_NEWLINE is defined, the \n character ////
.................... //// will erase all remanining characters on the current ////
.................... //// line, and move the cursor to the beginning of the next ////
.................... //// line. ////
.................... //// If LCD_EXTENDED_NEWLINE is defined, the \r character ////
.................... //// will move the cursor to the start of the current ////
.................... //// line. ////
.................... //// ////
.................... //// lcd_gotoxy(x,y) Set write position on LCD (upper left is 1,1) ////
.................... //// ////
.................... //// lcd_getc(x,y) Returns character at position x,y on LCD ////
.................... //// ////
.................... //// lcd_cursor_on(int1 on) Turn the cursor on (on=TRUE) or off ////
.................... //// (on=FALSE). ////
.................... //// ////
.................... //// lcd_set_cgram_char(w, *p) Write a custom character to the CGRAM. ////
.................... //// ////
.................... //// ////
.................... //// CONFIGURATION ////
.................... //// The LCD can be configured in one of two ways: a.) port access or ////
.................... //// b.) pin access. Port access requires the entire 7 bit interface ////
.................... //// connected to one GPIO port, and the data bits (D4:D7 of the LCD) ////
.................... //// connected to sequential pins on the GPIO. Pin access ////
.................... //// has no requirements, all 7 bits of the control interface can ////
.................... //// can be connected to any GPIO using several ports. ////
.................... //// ////
.................... //// To use port access, #define LCD_DATA_PORT to the SFR location of ////
.................... //// of the GPIO port that holds the interface, -AND- edit LCD_PIN_MAP ////
.................... //// of this file to configure the pin order. If you are using a ////
.................... //// baseline PIC (PCB), then LCD_OUTPUT_MAP and LCD_INPUT_MAP also must ////
.................... //// be defined. ////
.................... //// ////
.................... //// Example of port access: ////
.................... //// #define LCD_DATA_PORT getenv("SFR:PORTD") ////
.................... //// ////
.................... //// To use pin access, the following pins must be defined: ////
.................... //// LCD_ENABLE_PIN ////
.................... //// LCD_RS_PIN ////
.................... //// LCD_RW_PIN ////
.................... //// LCD_DATA4 ////
.................... //// LCD_DATA5 ////
.................... //// LCD_DATA6 ////
.................... //// LCD_DATA7 ////
.................... //// ////
.................... //// Example of pin access: ////
.................... //// #define LCD_ENABLE_PIN PIN_E0 ////
.................... //// #define LCD_RS_PIN PIN_E1 ////
.................... //// #define LCD_RW_PIN PIN_E2 ////
.................... //// #define LCD_DATA4 PIN_D4 ////
.................... //// #define LCD_DATA5 PIN_D5 ////
.................... //// #define LCD_DATA6 PIN_D6 ////
.................... //// #define LCD_DATA7 PIN_D7 ////
.................... //// ////
.................... ///////////////////////////////////////////////////////////////////////////////
.................... //// (C) Copyright 1996,2010 Custom Computer Services ////
.................... //// This source code may only be used by licensed users of the CCS C ////
.................... //// compiler. This source code may only be distributed to other ////
.................... //// licensed users of the CCS C compiler. No other use, reproduction ////
.................... //// or distribution is permitted without written permission. ////
.................... //// Derivative programs created using this software in object code ////
.................... //// form are not restricted in any way. ////
.................... ///////////////////////////////////////////////////////////////////////////
....................
.................... #ifndef __LCD_C__
.................... #define __LCD_C__
....................
.................... // define the pinout.
.................... // only required if port access is being used.
.................... typedef struct
.................... { // This structure is overlayed
.................... int1 enable; // on to an I/O port to gain
.................... int1 rs; // access to the LCD pins.
.................... int1 rw; // The bits are allocated from
.................... int1 unused; // low order up. ENABLE will
.................... unsigned int data : 4; // be LSB pin of that port.
.................... #if defined(__PCD__) // The port used will be LCD_DATA_PORT.
.................... unsigned int reserved: 8;
.................... #endif
.................... } LCD_PIN_MAP;
....................
.................... // this is to improve compatability with previous LCD drivers that accepted
.................... // a define labeled 'use_portb_lcd' that configured the LCD onto port B.
.................... #if ((defined(use_portb_lcd)) && (use_portb_lcd==TRUE))
.................... #define LCD_DATA_PORT getenv("SFR:PORTB")
.................... #endif
....................
.................... #if defined(__PCB__)
.................... // these definitions only need to be modified for baseline PICs.
.................... // all other PICs use LCD_PIN_MAP or individual LCD_xxx pin definitions.
.................... /* EN, RS, RW, UNUSED, DATA */
.................... const LCD_PIN_MAP LCD_OUTPUT_MAP = {0, 0, 0, 0, 0};
.................... const LCD_PIN_MAP LCD_INPUT_MAP = {0, 0, 0, 0, 0xF};
.................... #endif
....................
.................... ////////////////////// END CONFIGURATION ///////////////////////////////////
....................
.................... #ifndef LCD_ENABLE_PIN
.................... #define lcd_output_enable(x) lcdlat.enable=x
.................... #define lcd_enable_tris() lcdtris.enable=0
.................... #else
.................... #define lcd_output_enable(x) output_bit(LCD_ENABLE_PIN, x)
.................... #define lcd_enable_tris() output_drive(LCD_ENABLE_PIN)
.................... #endif
....................
.................... #ifndef LCD_RS_PIN
.................... #define lcd_output_rs(x) lcdlat.rs=x
.................... #define lcd_rs_tris() lcdtris.rs=0
.................... #else
.................... #define lcd_output_rs(x) output_bit(LCD_RS_PIN, x)
.................... #define lcd_rs_tris() output_drive(LCD_RS_PIN)
.................... #endif
....................
.................... #ifndef LCD_RW_PIN
.................... #define lcd_output_rw(x) lcdlat.rw=x
.................... #define lcd_rw_tris() lcdtris.rw=0
.................... #else
.................... #define lcd_output_rw(x) output_bit(LCD_RW_PIN, x)
.................... #define lcd_rw_tris() output_drive(LCD_RW_PIN)
.................... #endif
....................
.................... // original version of this library incorrectly labeled LCD_DATA0 as LCD_DATA4,
.................... // LCD_DATA1 as LCD_DATA5, and so on. this block of code makes the driver
.................... // compatible with any code written for the original library
.................... #if (defined(LCD_DATA0) && defined(LCD_DATA1) && defined(LCD_DATA2) && defined(LCD_DATA3) && !defined(LCD_DATA4) && !defined(LCD_DATA5) && !defined(LCD_DATA6) && !defined(LCD_DATA7))
.................... #define LCD_DATA4 LCD_DATA0
.................... #define LCD_DATA5 LCD_DATA1
.................... #define LCD_DATA6 LCD_DATA2
.................... #define LCD_DATA7 LCD_DATA3
.................... #endif
....................
.................... #ifndef LCD_DATA4
.................... #ifndef LCD_DATA_PORT
.................... #if defined(__PCB__)
.................... #define LCD_DATA_PORT 0x06 //portb
.................... #define set_tris_lcd(x) set_tris_b(x)
.................... #else
.................... #if defined(PIN_D0)
.................... #define LCD_DATA_PORT getenv("SFR:PORTD") //portd
.................... #else
.................... #define LCD_DATA_PORT getenv("SFR:PORTB") //portb
.................... #endif
.................... #endif
.................... #endif
....................
.................... #if defined(__PCB__)
.................... LCD_PIN_MAP lcd, lcdlat;
.................... #byte lcd = LCD_DATA_PORT
.................... #byte lcdlat = LCD_DATA_PORT
.................... #elif defined(__PCM__)
.................... LCD_PIN_MAP lcd, lcdlat, lcdtris;
.................... #byte lcd = LCD_DATA_PORT
.................... #byte lcdlat = LCD_DATA_PORT
.................... #byte lcdtris = LCD_DATA_PORT+0x80
.................... #elif defined(__PCH__)
.................... LCD_PIN_MAP lcd, lcdlat, lcdtris;
.................... #byte lcd = LCD_DATA_PORT
.................... #byte lcdlat = LCD_DATA_PORT+9
.................... #byte lcdtris = LCD_DATA_PORT+0x12
.................... #elif defined(__PCD__)
.................... LCD_PIN_MAP lcd, lcdlat, lcdtris;
.................... #word lcd = LCD_DATA_PORT
.................... #word lcdlat = LCD_DATA_PORT+2
.................... #word lcdtris = LCD_DATA_PORT-0x02
.................... #endif
.................... #endif //LCD_DATA4 not defined
....................
.................... #ifndef LCD_TYPE
.................... #define LCD_TYPE 2 // 0=5x7, 1=5x10, 2=2 lines
.................... #endif
....................
.................... #ifndef LCD_LINE_TWO
.................... #define LCD_LINE_TWO 0x40 // LCD RAM address for the second line
.................... #endif
....................
.................... #ifndef LCD_LINE_LENGTH
.................... #define LCD_LINE_LENGTH 20
.................... #endif
....................
.................... unsigned int8 lcd_read_nibble(void);
....................
.................... unsigned int8 lcd_read_byte(void)
.................... {
.................... unsigned int8 low,high;
....................
.................... #if defined(__PCB__)
.................... set_tris_lcd(LCD_INPUT_MAP);
.................... #else
.................... #if (defined(LCD_DATA4) && defined(LCD_DATA5) && defined(LCD_DATA6) && defined(LCD_DATA7))
.................... output_float(LCD_DATA4);
*
0081: BSF 06.3
.................... output_float(LCD_DATA5);
0082: BSF 06.4
.................... output_float(LCD_DATA6);
0083: BSF 06.5
.................... output_float(LCD_DATA7);
0084: BSF 06.6
.................... #else
.................... lcdtris.data = 0xF;
.................... #endif
.................... #endif
....................
.................... lcd_output_rw(1);
0085: BCF 03.5
0086: BSF 06.2
0087: BSF 03.5
0088: BCF 06.2
.................... delay_cycles(1);
0089: NOP
.................... lcd_output_enable(1);
008A: BCF 03.5
008B: BSF 06.0
008C: BSF 03.5
008D: BCF 06.0
.................... delay_cycles(1);
008E: NOP
.................... high = lcd_read_nibble();
008F: BCF 03.5
0090: CALL 048
0091: MOVF 78,W
0092: MOVWF 2C
....................
.................... lcd_output_enable(0);
0093: BCF 06.0
0094: BSF 03.5
0095: BCF 06.0
.................... delay_cycles(1);
0096: NOP
.................... lcd_output_enable(1);
0097: BCF 03.5
0098: BSF 06.0
0099: BSF 03.5
009A: BCF 06.0
.................... delay_us(1);
009B: GOTO 09C
009C: GOTO 09D
009D: NOP
.................... low = lcd_read_nibble();
009E: BCF 03.5
009F: CALL 048
00A0: MOVF 78,W
00A1: MOVWF 2B
....................
.................... lcd_output_enable(0);
00A2: BCF 06.0
00A3: BSF 03.5
00A4: BCF 06.0
....................
.................... #if defined(__PCB__)
.................... set_tris_lcd(LCD_OUTPUT_MAP);
.................... #else
.................... #if (defined(LCD_DATA4) && defined(LCD_DATA5) && defined(LCD_DATA6) && defined(LCD_DATA7))
.................... output_drive(LCD_DATA4);
00A5: BCF 06.3
.................... output_drive(LCD_DATA5);
00A6: BCF 06.4
.................... output_drive(LCD_DATA6);
00A7: BCF 06.5
.................... output_drive(LCD_DATA7);
00A8: BCF 06.6
.................... #else
.................... lcdtris.data = 0x0;
.................... #endif
.................... #endif
....................
.................... return( (high<<4) | low);
00A9: BCF 03.5
00AA: SWAPF 2C,W
00AB: MOVWF 77
00AC: MOVLW F0
00AD: ANDWF 77,F
00AE: MOVF 77,W
00AF: IORWF 2B,W
00B0: MOVWF 78
.................... }
....................
.................... unsigned int8 lcd_read_nibble(void)
.................... {
.................... #if (defined(LCD_DATA4) && defined(LCD_DATA5) && defined(LCD_DATA6) && defined(LCD_DATA7))
*
0048: CLRF 2D
.................... unsigned int8 n = 0x00;
....................
.................... /* Read the data port */
.................... n |= input(LCD_DATA4);
0049: BSF 03.5
004A: BSF 06.3
004B: MOVLW 00
004C: BCF 03.5
004D: BTFSC 06.3
004E: MOVLW 01
004F: IORWF 2D,F
.................... n |= input(LCD_DATA5) << 1;
0050: BSF 03.5
0051: BSF 06.4
0052: MOVLW 00
0053: BCF 03.5
0054: BTFSC 06.4
0055: MOVLW 01
0056: MOVWF 77
0057: BCF 03.0
0058: RLF 77,F
0059: MOVF 77,W
005A: IORWF 2D,F
.................... n |= input(LCD_DATA6) << 2;
005B: BSF 03.5
005C: BSF 06.5
005D: MOVLW 00
005E: BCF 03.5
005F: BTFSC 06.5
0060: MOVLW 01
0061: MOVWF 77
0062: RLF 77,F
0063: RLF 77,F
0064: MOVLW FC
0065: ANDWF 77,F
0066: MOVF 77,W
0067: IORWF 2D,F
.................... n |= input(LCD_DATA7) << 3;
0068: BSF 03.5
0069: BSF 06.6
006A: MOVLW 00
006B: BCF 03.5
006C: BTFSC 06.6
006D: MOVLW 01
006E: MOVWF 77
006F: RLF 77,F
0070: RLF 77,F
0071: RLF 77,F
0072: MOVLW F8
0073: ANDWF 77,F
0074: MOVF 77,W
0075: IORWF 2D,F
....................
.................... return(n);
0076: MOVF 2D,W
0077: MOVWF 78
.................... #else
0078: RETURN
.................... return(lcd.data);
.................... #endif
.................... }
....................
.................... void lcd_send_nibble(unsigned int8 n)
.................... {
.................... #if (defined(LCD_DATA4) && defined(LCD_DATA5) && defined(LCD_DATA6) && defined(LCD_DATA7))
.................... /* Write to the data port */
.................... output_bit(LCD_DATA4, bit_test(n, 0));
*
0018: BTFSC 2C.0
0019: GOTO 01C
001A: BCF 06.3
001B: GOTO 01D
001C: BSF 06.3
001D: BSF 03.5
001E: BCF 06.3
.................... output_bit(LCD_DATA5, bit_test(n, 1));
001F: BCF 03.5
0020: BTFSC 2C.1
0021: GOTO 024
0022: BCF 06.4
0023: GOTO 025
0024: BSF 06.4
0025: BSF 03.5
0026: BCF 06.4
.................... output_bit(LCD_DATA6, bit_test(n, 2));
0027: BCF 03.5
0028: BTFSC 2C.2
0029: GOTO 02C
002A: BCF 06.5
002B: GOTO 02D
002C: BSF 06.5
002D: BSF 03.5
002E: BCF 06.5
.................... output_bit(LCD_DATA7, bit_test(n, 3));
002F: BCF 03.5
0030: BTFSC 2C.3
0031: GOTO 034
0032: BCF 06.6
0033: GOTO 035
0034: BSF 06.6
0035: BSF 03.5
0036: BCF 06.6
.................... #else
.................... lcdlat.data = n;
.................... #endif
....................
.................... delay_cycles(1);
0037: NOP
.................... lcd_output_enable(1);
0038: BCF 03.5
0039: BSF 06.0
003A: BSF 03.5
003B: BCF 06.0
.................... delay_us(2);
003C: MOVLW 02
003D: MOVWF 77
003E: DECFSZ 77,F
003F: GOTO 03E
0040: GOTO 041
0041: NOP
.................... lcd_output_enable(0);
0042: BCF 03.5
0043: BCF 06.0
0044: BSF 03.5
0045: BCF 06.0
0046: BCF 03.5
0047: RETURN
.................... }
....................
.................... void lcd_send_byte(unsigned int8 address, unsigned int8 n)
.................... {
.................... #if defined(__PCB__)
.................... set_tris_lcd(LCD_OUTPUT_MAP);
.................... #else
.................... lcd_enable_tris();
*
0079: BSF 03.5
007A: BCF 06.0
.................... lcd_rs_tris();
007B: BCF 06.1
.................... lcd_rw_tris();
007C: BCF 06.2
.................... #endif
....................
.................... lcd_output_rs(0);
007D: BCF 03.5
007E: BCF 06.1
007F: BSF 03.5
0080: BCF 06.1
.................... while ( bit_test(lcd_read_byte(),7) ) ;
*
00B1: MOVF 78,W
00B2: MOVWF 2B
00B3: BTFSS 2B.7
00B4: GOTO 0B7
00B5: BSF 03.5
00B6: GOTO 081
.................... lcd_output_rs(address);
00B7: MOVF 29,F
00B8: BTFSS 03.2
00B9: GOTO 0BC
00BA: BCF 06.1
00BB: GOTO 0BD
00BC: BSF 06.1
00BD: BSF 03.5
00BE: BCF 06.1
.................... delay_cycles(1);
00BF: NOP
.................... lcd_output_rw(0);
00C0: BCF 03.5
00C1: BCF 06.2
00C2: BSF 03.5
00C3: BCF 06.2
.................... delay_cycles(1);
00C4: NOP
.................... lcd_output_enable(0);
00C5: BCF 03.5
00C6: BCF 06.0
00C7: BSF 03.5
00C8: BCF 06.0
.................... lcd_send_nibble(n >> 4);
00C9: BCF 03.5
00CA: SWAPF 2A,W
00CB: MOVWF 2B
00CC: MOVLW 0F
00CD: ANDWF 2B,F
00CE: MOVF 2B,W
00CF: MOVWF 2C
00D0: CALL 018
.................... lcd_send_nibble(n & 0xf);
00D1: MOVF 2A,W
00D2: ANDLW 0F
00D3: MOVWF 2B
00D4: MOVWF 2C
00D5: CALL 018
00D6: RETURN
.................... }
....................
.................... #if defined(LCD_EXTENDED_NEWLINE)
.................... unsigned int8 g_LcdX, g_LcdY;
.................... #endif
....................
.................... void lcd_init(void)
.................... {
.................... unsigned int8 i;
.................... unsigned int8 LCD_INIT_STRING[4] = {0x20 | (LCD_TYPE << 2), 0xc, 1, 6};
00D7: MOVLW 28
00D8: MOVWF 23
00D9: MOVLW 0C
00DA: MOVWF 24
00DB: MOVLW 01
00DC: MOVWF 25
00DD: MOVLW 06
00DE: MOVWF 26
.................... // These bytes need to be sent to the LCD
.................... // to start it up.
....................
....................
.................... lcd_output_enable(0);
00DF: BCF 06.0
00E0: BSF 03.5
00E1: BCF 06.0
.................... lcd_output_rs(0);
00E2: BCF 03.5
00E3: BCF 06.1
00E4: BSF 03.5
00E5: BCF 06.1
.................... lcd_output_rw(0);
00E6: BCF 03.5
00E7: BCF 06.2
00E8: BSF 03.5
00E9: BCF 06.2
....................
.................... #if defined(__PCB__)
.................... set_tris_lcd(LCD_OUTPUT_MAP);
.................... #else
.................... #if (defined(LCD_DATA4) && defined(LCD_DATA5) && defined(LCD_DATA6) && defined(LCD_DATA7))
.................... output_drive(LCD_DATA4);
00EA: BCF 06.3
.................... output_drive(LCD_DATA5);
00EB: BCF 06.4
.................... output_drive(LCD_DATA6);
00EC: BCF 06.5
.................... output_drive(LCD_DATA7);
00ED: BCF 06.6
.................... #else
.................... lcdtris.data = 0x0;
.................... #endif
.................... lcd_enable_tris();
00EE: BCF 06.0
.................... lcd_rs_tris();
00EF: BCF 06.1
.................... lcd_rw_tris();
00F0: BCF 06.2
.................... #endif
....................
.................... delay_ms(15);
00F1: MOVLW 0F
00F2: BCF 03.5
00F3: MOVWF 27
00F4: CALL 004
.................... for(i=1;i<=3;++i)
00F5: MOVLW 01
00F6: MOVWF 22
00F7: MOVF 22,W
00F8: SUBLW 03
00F9: BTFSS 03.0
00FA: GOTO 103
.................... {
.................... lcd_send_nibble(3);
00FB: MOVLW 03
00FC: MOVWF 2C
00FD: CALL 018
.................... delay_ms(5);
00FE: MOVLW 05
00FF: MOVWF 27
0100: CALL 004
0101: INCF 22,F
0102: GOTO 0F7
.................... }
....................
.................... lcd_send_nibble(2);
0103: MOVLW 02
0104: MOVWF 2C
0105: CALL 018
.................... delay_ms(5);
0106: MOVLW 05
0107: MOVWF 27
0108: CALL 004
.................... for(i=0;i<=3;++i)
0109: CLRF 22
010A: MOVF 22,W
010B: SUBLW 03
010C: BTFSS 03.0
010D: GOTO 11A
.................... lcd_send_byte(0,LCD_INIT_STRING[i]);
010E: MOVLW 23
010F: ADDWF 22,W
0110: MOVWF 04
0111: BCF 03.7
0112: MOVF 00,W
0113: MOVWF 27
0114: CLRF 29
0115: MOVF 27,W
0116: MOVWF 2A
0117: CALL 079
....................
.................... #if defined(LCD_EXTENDED_NEWLINE)
0118: INCF 22,F
0119: GOTO 10A
011A: BCF 0A.3
011B: BCF 0A.4
011C: GOTO 1C1 (RETURN)
.................... g_LcdX = 0;
.................... g_LcdY = 0;
.................... #endif
.................... }
....................
.................... void lcd_gotoxy(unsigned int8 x, unsigned int8 y)
.................... {
.................... unsigned int8 address;
....................
.................... if(y!=1)
011D: DECFSZ 26,W
011E: GOTO 120
011F: GOTO 123
.................... address=LCD_LINE_TWO;
0120: MOVLW 40
0121: MOVWF 27
0122: GOTO 124
.................... else
.................... address=0;
0123: CLRF 27
....................
.................... address+=x-1;
0124: MOVLW 01
0125: SUBWF 25,W
0126: ADDWF 27,F
.................... lcd_send_byte(0,0x80|address);
0127: MOVF 27,W
0128: IORLW 80
0129: MOVWF 28
012A: CLRF 29
012B: MOVF 28,W
012C: MOVWF 2A
012D: CALL 079
....................
.................... #if defined(LCD_EXTENDED_NEWLINE)
012E: RETURN
.................... g_LcdX = x - 1;
.................... g_LcdY = y - 1;
.................... #endif
.................... }
....................
.................... void lcd_putc(char c)
.................... {
.................... switch (c)
*
0144: MOVF 24,W
0145: XORLW 07
0146: BTFSC 03.2
0147: GOTO 152
0148: XORLW 0B
0149: BTFSC 03.2
014A: GOTO 157
014B: XORLW 06
014C: BTFSC 03.2
014D: GOTO 15F
014E: XORLW 02
014F: BTFSC 03.2
0150: GOTO 165
0151: GOTO 16A
.................... {
.................... case '\a' : lcd_gotoxy(1,1); break;
0152: MOVLW 01
0153: MOVWF 25
0154: MOVWF 26
0155: CALL 11D
0156: GOTO 16F
....................
.................... case '\f' : lcd_send_byte(0,1);
0157: CLRF 29
0158: MOVLW 01
0159: MOVWF 2A
015A: CALL 079
.................... delay_ms(2);
015B: MOVLW 02
015C: MOVWF 27
015D: CALL 004
.................... #if defined(LCD_EXTENDED_NEWLINE)
.................... g_LcdX = 0;
.................... g_LcdY = 0;
.................... #endif
.................... break;
015E: GOTO 16F
....................
.................... #if defined(LCD_EXTENDED_NEWLINE)
.................... case '\r' : lcd_gotoxy(1, g_LcdY+1); break;
.................... case '\n' :
.................... while (g_LcdX++ < LCD_LINE_LENGTH)
.................... {
.................... lcd_send_byte(1, ' ');
.................... }
.................... lcd_gotoxy(1, g_LcdY+2);
.................... break;
.................... #else
.................... case '\n' : lcd_gotoxy(1,2); break;
015F: MOVLW 01
0160: MOVWF 25
0161: MOVLW 02
0162: MOVWF 26
0163: CALL 11D
0164: GOTO 16F
.................... #endif
....................
.................... case '\b' : lcd_send_byte(0,0x10); break;
0165: CLRF 29
0166: MOVLW 10
0167: MOVWF 2A
0168: CALL 079
0169: GOTO 16F
....................
.................... #if defined(LCD_EXTENDED_NEWLINE)
.................... default :
.................... if (g_LcdX < LCD_LINE_LENGTH)
.................... {
.................... lcd_send_byte(1, c);
.................... g_LcdX++;
.................... }
.................... break;
.................... #else
.................... default : lcd_send_byte(1,c); break;
016A: MOVLW 01
016B: MOVWF 29
016C: MOVF 24,W
016D: MOVWF 2A
016E: CALL 079
.................... #endif
.................... }
016F: RETURN
.................... }
....................
.................... char lcd_getc(unsigned int8 x, unsigned int8 y)
.................... {
.................... char value;
....................
.................... lcd_gotoxy(x,y);
.................... while ( bit_test(lcd_read_byte(),7) ); // wait until busy flag is low
.................... lcd_output_rs(1);
.................... value = lcd_read_byte();
.................... lcd_output_rs(0);
....................
.................... return(value);
.................... }
....................
.................... // write a custom character to the ram
.................... // which is 0-7 and specifies which character array we are modifying.
.................... // ptr points to an array of 8 bytes, where each byte is the next row of
.................... // pixels. only bits 0-4 are used. the last row is the cursor row, and
.................... // usually you will want to leave this byte 0x00.
.................... void lcd_set_cgram_char(unsigned int8 which, unsigned int8 *ptr)
.................... {
.................... unsigned int i;
....................
.................... which <<= 3;
.................... which &= 0x38;
....................
.................... lcd_send_byte(0, 0x40 | which); //set cgram address
....................
.................... for(i=0; i<8; i++)
.................... {
.................... lcd_send_byte(1, *ptr++);
.................... }
....................
.................... #if defined(LCD_EXTENDED_NEWLINE)
.................... lcd_gotoxy(g_LcdX+1, g_LcdY+1); //set ddram address
.................... #endif
.................... }
....................
.................... void lcd_cursor_on(int1 on)
.................... {
.................... if (on)
.................... {
.................... lcd_send_byte(0,0x0F); //turn LCD cursor ON
.................... }
.................... else
.................... {
.................... lcd_send_byte(0,0x0C); //turn LCD cursor OFF
.................... }
.................... }
....................
.................... #endif
....................
....................
.................... void main()
*
01A7: MOVF 03,W
01A8: ANDLW 1F
01A9: MOVWF 03
01AA: MOVLW FF
01AB: MOVWF 20
01AC: BSF 03.5
01AD: BSF 1F.0
01AE: BSF 1F.1
01AF: BSF 1F.2
01B0: BCF 1F.3
01B1: MOVLW 07
01B2: MOVWF 1C
01B3: BCF 03.7
.................... {byte value;
....................
.................... setup_adc_ports(AN0);
01B4: BCF 1F.0
01B5: BSF 1F.1
01B6: BSF 1F.2
01B7: BSF 1F.3
.................... setup_adc(ADC_CLOCK_internal);
01B8: BCF 1F.6
01B9: BCF 03.5
01BA: BSF 1F.6
01BB: BSF 1F.7
01BC: BSF 03.5
01BD: BCF 1F.7
01BE: BCF 03.5
01BF: BSF 1F.0
....................
.................... lcd_init();
01C0: GOTO 0D7
....................
.................... while(TRUE)
.................... {set_adc_channel(0);
01C1: MOVLW 00
01C2: MOVWF 78
01C3: MOVF 1F,W
01C4: ANDLW C7
01C5: IORWF 78,W
01C6: MOVWF 1F
.................... value=read_adc();
01C7: BSF 1F.2
01C8: BTFSC 1F.2
01C9: GOTO 1C8
01CA: BSF 03.5
01CB: MOVF 1E,W
01CC: BCF 03.5
01CD: MOVWF 21
.................... output_c(value);
01CE: MOVLW 00
01CF: MOVWF 20
01D0: BSF 03.5
01D1: CLRF 07
01D2: BCF 03.5
01D3: MOVF 21,W
01D4: MOVWF 07
.................... lcd_gotoxy(3,1);
01D5: MOVLW 03
01D6: MOVWF 25
01D7: MOVLW 01
01D8: MOVWF 26
01D9: CALL 11D
.................... printf(lcd_putc,"%u",value);
01DA: MOVF 21,W
01DB: MOVWF 22
01DC: MOVLW 1B
01DD: MOVWF 23
01DE: GOTO 170
01DF: GOTO 1C1
....................
....................
.................... }
....................
.................... }
01E0: SLEEP
Configuration Fuses:
Word 1: 3F32 HS NOWDT PUT NOBROWNOUT NOLVP NOCPD NOWRT NODEBUG NOPROTECT |
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temtronic
Joined: 01 Jul 2010
Posts: 9228
Location: Greensville,Ontario
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| Posted: Thu Jul 07, 2016 10:28 am |
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this...
setup_adc(ADC_CLOCK_internal);
is still wrong !
As pointed out before..it needs to be changed..
to this...
setup_adc(ADC_CLOCK_DIV_32); //correct clock setting for up to 20MHz
Jay |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19516
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| Posted: Thu Jul 07, 2016 11:28 am |
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Also on the original code, he is reading the ADC into a single int8. He is now compiling with ADC=16.....
The code I posted compiles and runs with 5.015. It only needs the clock line changed to crystal=20MHz, to run with a 20MHz crystal. |
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Eng.Nidal
Joined: 06 Jul 2016
Posts: 4
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| Posted: Thu Jul 07, 2016 3:42 pm |
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thanks a lot for helpful information
it's finally worked
and it reads perfect |
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