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CCSC rs232.c程序操作MCD2demo ADC CH0測(cè)量電壓通過(guò)rs232到PC

更新時(shí)間: 2019-03-23

閱讀量：2753

十年專(zhuān)注單片機(jī)方案開(kāi)發(fā)的方案公司英銳恩，分享CCSC rs232.c程序操作MCD2demo ADC CH0測(cè)量電壓通過(guò)rs232到PC。英銳恩現(xiàn)提供服務(wù)產(chǎn)品涉及主控芯片：8位單片機(jī)、16位單片機(jī)、32位單片機(jī)及各類(lèi)運(yùn)算放大器等。

*=============================================================================
PIC RS232收到'S'or's',返回"S:StartADC",開(kāi)始測(cè)量CH0電壓，并且將數(shù)據(jù)通過(guò)RS232送出;
         收到'Q'or'q',返回"Q:EndADC",停止量測(cè)CH0電壓.
============================================================================*/
///////////////////////////////////////////////////////////////////////////////
// MPLAB IDE V7.11 + CCS C3.18
// Use 16F877A ADC and Rs232 for MCD2-demo
//
// by LW7807@163.com
// 2005/06/23
///////////////////////////////////////////////////////////////////////////////
#include <16F877A.h>                                    // PIC16F877 header file
#pragma device ADC=10                                   // 10 bits ADC
#pragma use delay(clock=4000000)                        // for 4Mhz crystal
#pragma fuses XT, NOWDT, NOPROTECT, NOLVP               // for debug mode

#pragma use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7, stream=MYPC)
// rs232 setting

#define DO_NOTHING              0
#define DO_START_ADC            1
#define DO_END_ADC              2

/*===========================================================================*/
void main(void)
{
        int16 int_volt;
        int8 str_volt[21];
        float flt_volt;

int8 do_what = DO_NOTHING;
int8 tmp;

        while(1){
                // if rs232 get char
                if(0 != kbhit())
                        {
                        tmp = fgetc(MYPC);
                        switch(tmp)
                                {
                                case 'S':
                                case 's':
                                        printf( "S:StartADC\n" );
                                        do_what = DO_START_ADC;

                                        // init pic16f877a adc
                                        setup_adc_ports(RA0_RA1_RA3_ANALOG);
                                        setup_adc(ADC_CLOCK_INTERNAL);
                                        set_adc_channel(0);
                                        break;

case 'Q':
                                case 'q':
                                        printf( "Q:EndADC\n" );
                                        do_what = DO_END_ADC;

                                        // adc off
                                        setup_adc(ADC_OFF);
                                        break;
                                default :       // rs232 get other char
                                        putc(tmp);
                                        break;
                                }//end switch(tmp)
                        }//end if(kbhit())

                switch(do_what)
                        {
                        case DO_START_ADC:
                                // start adc and send result to PC
                                int_volt = read_adc();
                                flt_volt = 5.0 * int_volt / 0x3ff;

sprintf(str_volt, "ADC_CH0:%1.3fV\n", flt_volt);
                                printf(str_volt);
                                printf( "delay_ms(300)\n" );
                                delay_ms(300);
                                break;
                        case DO_END_ADC:
                                // you want to do
                                break;
                        case DO_NOTHING:
                                // you want to do
                                break;
                        default:
                                break;
                        }//end switch(do_what)

}//end while(1)
}//end main()

附上RS232.c程序lst文件

CCS PCM C Compiler, Version 3.187, 16465

Filename: D:\myPIC\ccsc_rs232.LST

               ROM used: 1091 (13%)
                         Largest free fragment is 2048
               RAM used: 39 (22%) at main() level
                         55 (31%) worst case
               Stack:    2 locations

*
0000: MOVLW 00

0001: MOVWF 0A
0002: GOTO 34B
0003: NOP
.................... /*=============================================================================
.................... PIC RS232收到'S'or's',返回"S:StartADC",開(kāi)始測(cè)量CH0電壓，并且將數(shù)據(jù)通過(guò)RS232送出;
.................... 收到'Q'or'q',返回"Q:EndADC",停止量測(cè)CH0電壓.
.................... ============================================================================*/
.................... ///////////////////////////////////////////////////////////////////////////////
.................... // MPLAB IDE V7.11 + CCS C3.18
.................... // Use 16F877A ADC and Rs232 for MCD2-demo
.................... //
.................... // by LW7807@163.com
.................... // 2005/06/23
....................

///////////////////////////////////////////////////////////////////////////////
.................... #include <16F877A.h>                                    // PIC16F877 header file
.................... //////// Standard Header file for the PIC16F877A device ////////////////
.................... #device PIC16F877A
.................... #list
....................
.................... #pragma device ADC=10                                   // 10 bits ADC
.................... #pragma use delay(clock=4000000)                        // for 4Mhz crystal

0334: MOVLW 3F
0335: MOVWF 04
0336: MOVF   00,W
0337: BTFSC 03.2
0338: GOTO   348
0339: MOVLW 01
033A: MOVWF 78
033B: CLRF   77
033C: DECFSZ 77,F
033D: GOTO   33C
033E: DECFSZ 78,F
033F: GOTO   33B

0340: MOVLW 4A
0341: MOVWF 77
0342: DECFSZ 77,F
0343: GOTO   342
0344: NOP
0345: NOP
0346: DECFSZ 00,F
0347: GOTO   339
0348: BCF    0A.3
0349: BCF    0A.4
034A: GOTO   43B (RETURN)
.................... #pragma fuses XT, NOWDT, NOPROTECT, NOLVP               // for debug mode
....................

.................... #pragma use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7, stream=MYPC)
....................                                                         // rs232 setting
....................
.................... #define DO_NOTHING              0
.................... #define DO_START_ADC            1
.................... #define DO_END_ADC              2
....................
....................
.................... /*===========================================================================*/
.................... void main(void)
.................... {

034B: CLRF   04
034C: MOVLW 1F
034D: ANDWF 03,F
034E: MOVLW 06
034F: BSF    03.5
0350: MOVWF 1F
0351: MOVLW 07
0352: BCF    03.5
0353: MOVWF 1F
0354: MOVLW 19
0355: BSF    03.5
0356: MOVWF 19
0357: MOVLW 26
0358: MOVWF 18
0359: MOVLW 90

035A: BCF    03.5
035B: MOVWF 18
....................         int16 int_volt;
....................         int8 str_volt[21];
....................         float flt_volt;
....................         int8 do_what = DO_NOTHING;
*
035D: CLRF   3C
....................         int8 tmp;
....................
....................         while(1){
....................                 // if rs232 get char
....................                 if(0 != kbhit())
....................                         {
035E: MOVLW 00
035F: BTFSC 0C.5
0360: MOVLW 01
0361: XORLW 00
0362: BTFSC 03.2
0363: GOTO   3B1

....................                         tmp = fgetc(MYPC);
0364: BTFSS 0C.5
0365: GOTO   364
0366: MOVF   1A,W
0367: MOVWF 3D
....................                         switch(tmp)
....................                                 {
0368: MOVF   3D,W
0369: MOVWF 77
036A: MOVLW 53
036B: SUBWF 77,W
036C: BTFSC 03.2
036D: GOTO   37B
036E: MOVLW 73
036F: SUBWF 77,W
0370: BTFSC 03.2
0371: GOTO   37B
0372: MOVLW 51
0373: SUBWF 77,W
0374: BTFSC 03.2
0375: GOTO   399
0376: MOVLW 71

0377: SUBWF 77,W
0378: BTFSC 03.2
0379: GOTO   399
037A: GOTO   3AC
....................                                 case 'S':
....................                                 case 's':
....................                                         printf( "S:StartADC\n" );
037B: CLRF   3E
037C: MOVF   3E,W
037D: CALL   004

037E: INCF   3E,F
037F: MOVWF 77
0380: MOVF   77,W
0381: BTFSS 0C.4
0382: GOTO   381
0383: MOVWF 19
0384: MOVLW 0B
0385: SUBWF 3E,W
0386: BTFSS 03.2
0387: GOTO   37C
....................                                         do_what = DO_START_ADC;
0388: MOVLW 01
0389: MOVWF 3C
....................
....................                                         // init pic16f877a adc
....................                                         setup_adc_ports(RA0_RA1_RA3_ANALOG);
038A: MOVLW 84
038B: BSF    03.5
038C: MOVWF 1F

....................                                         setup_adc(ADC_CLOCK_INTERNAL);
038D: BCF    03.5
038E: MOVF   1F,W
038F: ANDLW 38
0390: IORLW C1
0391: MOVWF 1F
....................                                         set_adc_channel(0);
0392: MOVLW 00
0393: MOVWF 78
0394: MOVF   1F,W
0395: ANDLW C7
0396: IORWF 78,W
0397: MOVWF 1F

....................                                         break;
0398: GOTO   3B1
....................                                 case 'Q':
....................                                 case 'q':
....................                                         printf( "Q:EndADC\n" );
0399: CLRF   3E
039A: MOVF   3E,W
039B: CALL   014
039C: INCF   3E,F
039D: MOVWF 77
039E: MOVF   77,W
039F: BTFSS 0C.4
03A0: GOTO   39F
03A1: MOVWF 19
03A2: MOVLW 09
03A3: SUBWF 3E,W
03A4: BTFSS 03.2
03A5: GOTO   39A
....................                                         do_what = DO_END_ADC;

03A6: MOVLW 02
03A7: MOVWF 3C
....................
....................                                         // adc off
....................                                         setup_adc(ADC_OFF);
03A8: MOVF   1F,W
03A9: ANDLW 38
03AA: MOVWF 1F
....................                                         break;
03AB: GOTO   3B1
....................                                 default :       // rs232 get other char
....................                                         putc(tmp);
03AC: MOVF   3D,W
03AD: BTFSS 0C.4
03AE: GOTO   3AD
03AF: MOVWF 19
....................                                         break;
03B0: GOTO   3B1
....................                                 }//end switch(tmp)
....................                         }//end if(kbhit())
....................
....................                 switch(do_what)

....................                         {
03B1: MOVF   3C,W
03B2: MOVWF 77
03B3: MOVLW 01
03B4: SUBWF 77,W
03B5: BTFSC 03.2
03B6: GOTO   3BF
03B7: MOVLW 02
03B8: SUBWF 77,W
03B9: BTFSC 03.2
03BA: GOTO   43E
03BB: MOVF   77,F
03BC: BTFSC 03.2
03BD: GOTO   43F
03BE: GOTO   440
....................                         case DO_START_ADC:
....................                                 // start adc and send result to PC
....................                                 int_volt = read_adc(); flt_volt = 5.0 * int_volt / 0x3ff;

03C8: MOVF   22,W
03C9: MOVWF 3F
03CA: MOVF   21,W
03CB: MOVWF 3E
03CC: GOTO   049
03CD: CLRF   41
03CE: CLRF   40
03CF: MOVLW 20
03D0: MOVWF 3F
03D1: MOVLW 81
03D2: MOVWF 3E
03D3: MOVF   7A,W
03D4: MOVWF 45
03D5: MOVF   79,W
03D6: MOVWF 44

03D7: MOVF   78,W
03D8: MOVWF 43
03D9: MOVF   77,W
03DA: MOVWF 42
03DB: GOTO   069
03DC: MOVF   77,W
03DD: MOVWF 3E
03DE: MOVF   78,W
03DF: MOVWF 3F
03E0: MOVF   79,W
03E1: MOVWF 40
03E2: MOVF   7A,W
03E3: MOVWF 41
03E4: MOVWF 45
03E5: MOVF   79,W
03E6: MOVWF 44
03E7: MOVF   78,W
03E8: MOVWF 43
03E9: MOVF   77,W
03EA: MOVWF 42
03EB: CLRF   49
03EC: MOVLW C0
03ED: MOVWF 48
03EE: MOVLW 7F
03EF: MOVWF 47

03F0: MOVLW 88
03F1: MOVWF 46
03F2: GOTO   0E2
03F3: MOVF   7A,W
03F4: MOVWF 3B
03F5: MOVF   79,W
03F6: MOVWF 3A
03F7: MOVF   78,W
03F8: MOVWF 39
03F9: MOVF   77,W
03FA: MOVWF 38
....................                                 sprintf(str_volt, "ADC_CH0:%1.3fV\n", flt_volt);
*
035C: CLRF   20
*
03FB: MOVLW 23
03FC: MOVWF 20
03FD: CLRF   3E

03FE: MOVF 3E,W
03FF: CALL 022 delay_ms(300);

0436: MOVLW 02
0437: MOVWF 3E
0438: MOVLW 96
0439: MOVWF 3F
043A: GOTO   334
043B: DECFSZ 3E,F
043C: GOTO   438
....................                                 break;

043D: GOTO   441
....................                         case DO_END_ADC:
....................                                 // you want to do
....................                                 break;
043E: GOTO   441
....................                         case DO_NOTHING:
....................                                 // you want to do
....................                                 break;
043F: GOTO   441
....................                         default:
....................                                 break;
0440: GOTO   441
....................                         }//end switch(do_what)
....................
....................                 }//end while(1)
0441: GOTO   35E
.................... }//end main()
....................
0442: SLEEP