PIC MCU programming problem just learned.

; ? Example? For reference? Can you directly simulate and see more examples? It will help.

; ? *********************************************************************

; ? * ? GPIO0-V？ GPIO 1-I？ GPIO2-LED 1？ GPIO4-LED2？ GPIO5-OUT？ *

; ? * ? GPIO3- 10K *

; ? *********************************************************************

? List? P= 12F675

? Including? “P 12F675。 INC”？ ; ? Contains MPLAB predefined header files.

? _ _ CONFIG(0x3fc 4)； ? 1 1? - 1? 1 100? 1000? Set configuration word information

? ; ? _CPD_OFF？ & amp？ _CP_OFF？ & amp？ _ Borden _ Weng? & amp？ _MCLRE_OFF？

? ; ? Off-code data protection, power-off reset enable, internal reset,

? ; ? _PWRTE_ON？ & amp？ _ WDT _ off? & amp？ _INTRC_OSC_NOCLKOUT

? ; ? Power-on reset delay enabled, watchdog off, internal oscillation without clock output.

; ? *************************************************

; ? *? Register definition and RAM allocation *

; ? *************************************************

? Error level? -302 ; ? Do not display messages in the compiled output.

? cblock？ 0x20？ The definition of universal variables starts from this address.

? W _ TEMP？ Is the interrupt service program used to temporarily save W and state?

? State _ temperature

? Flag? ; ? Status flag register to be used by the program

? PWM _ HIGH:2； ? New PWM high time, two bytes reserved.

? PWM_LOW:2？ ; ? New PWM low time, two bytes reserved.

? PWM _ HIGH _ CURRENT:2； ? High level time latch of current PWM

? PWM _ LOW _ current: 2? ; ? Current PWM low level time latch

? Counter; ? Advertising sampling count

? adsum:2； ? 16 AD accumulation result, used for average operation, two bytes.

? Temperature: 2; ? Temporary variable for mathematical operation, two bytes.

? endc？ ; ? End cblock variable definition

? Count EQU 38H

? The result? EQU 39H

; ************************************************

; I/O pin initialization? *

; And then what? A/D？ Initialize *

; ************************************************

; GP0？ =? Analog voltage input

; GP 1？ =? Unused

; GP2？ =? Unused

; GP3？ =? It can only be used as an input to ground the 10K pull-down resistor, and this pin will be used for ICSP recording.

; GP4？ =? PWM 1？ Output pin

; GP5？ =? PWM2？ Output pin

? ; ? /? ***? ***? ***? ***? ***? /Replace definition

# Definition? PWM _ output? GPIO，2？ ; ? GPIO，4

# Definition? LOAD_PWM flag, 0

# Definition? CALCULATE_AD flag, 1

# Definition? PWM_TICKS？ . 1024 ; ? The number of PWM time slices, if the resolution of PWM is 10 bits,

# Definition? TEST_PWM_HIGH？ .5 12 ; ? 50% duty cycle is used for testing, and the high level time is equal to half of PWM time slice.

# Definition? TEST _ PWM _ LOW PWM _ TICKS-TEST _ PWM _ HIGH？ ; ? The low level time is equal to the low level time of PWM time slice.

# Definition? ISR_DELAY？ . 16 ? ; ? The delay from the overflow of the timer 1 to the value of the interrupt overload timer 1,

; ? This value can be determined by software simulation.

# Definition? Quantity _ Advertisement _ Sample? . 16 ? ; ? Advertising sampling time

# Definition? AD _ TIME _ interval? . 10 ; ? 0xFF？ -? (245) ad time interval, 10 period.

? ; ? /? ***? ***? ***? ***? ***? /Defines a macro that subtracts a variable from a two-byte constant.

? ; ? const_input？ -? Input? =? output

sub_const_ 16？ Macro? Const_input, input,? output

? Movlw low? Constant _ input; ? W? =? Low? Double-byte constant l

? Movwf temperature

? Is movlw tall? const_input？ ; ? W? =? Tall? Double byte constant? H

? Movwf temperature+1

? Movf input, w; ? W? =? invest

? Subbass temperature, w; ? W? =? Temporary workers? -? W?

? Movwf output; ? Output? =? W

? Movf input+1, w? ; ? W? =? Enter+1

? Btfss status, c? ; ? c？ =? 1? -& gt；

? Incf input+1, w? ; ? W? =? Enter+1? +? 1

? Subwoofer temperature+1, w? ; ? W? =? temp+ 1？ -? W?

? Movwf output+1? ; ? Output+1? =? W

? endm

? ; ? /? ***? ***? ***? ***? ***? /Macro that defines double-byte constant plus variable

? ; ? const_input？ +? Input? =? output

add_const_ 16？ Macro? Const_input, input,? output

? Movlw low? Constant _ input; ? W? =? Low? Double-byte constant l

? Movwf temperature

? Is movlw tall? const_input？ ; ? W? =? Tall? Double byte constant? H

? Movwf temperature+1

? Movf input, w; ? W? =? invest

? Addwf temperature, w; ? W? =? Temporary workers? +? W?

? Movwf output; ? Output? =? W

? Movf input+1, w? ; ? W? =? Enter+1

? Btfsc status, c? ; ? c？ =? 0? -& gt；

? Incf input+1, w? ; ? W? =? Enter+1? +? 1

? addwf temp+ 1，w？ ; ? W? =? temp+ 1？ +? W?

? Movwf output+1? ; ? Output+1? =? W

? endm

? ; ? /? ***? ***? ***? ***? ***? /program start

? ; ? /? ***? ***? ***? ***? ***? /

? org？ 0000H？ ; ? Chip reset entry address 0x00

? Go to MAIN000? main program

? ; ? /? ***? ***? ***? ***? ***? /interrupt service subroutine

? ; ? /? ***? ***? ***? ***? ***? /

? ; ? INTCON，T0IF - TMR0？ Overflow intcon, intf-GP2/int external interrupt

? ; ? INTCON，GPIF - GP5-GP0？ Pin level has changed.

? ; ? PIR 1，EEIF - EEPROM？ Write operation completed? PIR 1, ADIF-modulus? Conversion complete

? ; ? Pir 1, CMIF- comparator input has been changed. PIR 1，TMR 1IF-TMR 1？ spill over

? org？ 0004h？ ; ? Interrupt entry address 0x0004

INTCON00？ movwf W _ TEMP？ W_TEMP？ =? W? protect

? Swapf status, w? ; ? Status _ Temperature? =? condition

? Movwf state _ temperature

? bcf？ Status, RP0；; ? Choose a bank? 0

INTCON02？ movlw b ' 00000 100 '； ? Put the fourth place of w high, and everything else is zero.

? xorwf GPIO，F； ? And GPIO xor, that is, invert the level of the PWM output pin.

; ? Judging the interrupt type

INTCON03？ bcf？ PIR 1，TMR 1IF； ? Qing? T 1？ Interrupt sign? Timer 1？ pause

? Is movlw tall? 3CAFH？ Timer 1？ =? 50? mS？ C350H

? movwf TMR 1H？ ; ? FFFFH？ -? C350H？ =? 3CAFH

? Movlw low? 3CAFH

? movwf TMR 1L

? bsf？ Calculation _AD? ; ? Settings? A/D？ Conversion mark

? bsf？ LOAD_PWM？ ; ? Settings? PWM？ symbol

INTCON08？ Swapf status _ temperature, w? ; ? Recovery status register

? Movwf state

? swapf W_TEMP，F？ ; ? Restore w register

? Swapf temperature, w

? retfie？ Return from interrupt

? ; ? /? ***? ***? ***? ***? ***? /main program

? ; ? /? ***? ***? ***? ***? ***? /

MAIN000 clrf GPIO？ ; ? Initialize the GPIO port register to zero.

? bsf？ Status,? RP0； ? Choose a bank? 1

? Call 0x3FF? ; ? Read the factory calibration word of internal oscillation, and the return value is in the W register.

? movwf OSCCAL？ Internal oscillator calibration

? movlw b ' 1 10000 1 1 '； ? Setting assembly

? movwf TRISIO？

? movlw 0 1h； ? Enable timer 1 interrupt? 0 1h

? movwf PIE 1

? movlw b ' 000 1000 1 '； ? AD adopts FOSC/8? Clock, GP2 is an analog port,

? Muff Ansel? ; ? The other ports are digital IO.

? movlw b ' 0000 1000 '； ? Timer 0 is set to use the internal instruction cycle without prescaling.

? Movwf option _ register

? bcf？ Status,? RP0； ? Select Bank0.

? movlw b ' 100000 1 '； ? A/D is right-aligned, based on Vdd, and GP0 is the AD input port.

? movwf ADCON0

? movlw b ' 00000 1 1 1 '； ? Turn off the internal comparator so that the inputs of the comparator are all digital ports.

? movwf CMCON

? movlw 0C0h？ ; ? Enable peripheral interrupts and global interrupts.

? movwf INTCON

? movlw b ' 000000 1 '； ? Timer 1 is 1: 1 prescaler, internal clock source,

? movwf T 1CON？ ; ? Oscillation frequency /4, without gate control

? movlw . 16； ? AD？ Number of times? =? 10

? Movwf counter

MAIN0 10 btfss CALCULATE_AD？ ; ? =? 1? -& gt； ? systemic circulation

? Go to MAIN0 10.

? bcf？ Calculation _AD? ; ? Qing? A/D？ Conversion mark

? bsf？ Status, RP0；; ? Select bank 1.

? movf ADRESL，W？ ; ? W? =? AD？ L

? addwf adsum，F； ? adsum？ =? AD？ L

? Btfsc status, c? ; ? c？ =? 0? -& gt；

? incf adsum+ 1，F？ ; ? adsum+ 1？ =? adsum+ 1？ +? 1

? bcf？ Status, RP0；; ? Select Bank0.

? movf ADRESH，W？ ; ? W? =? AD？ H

? addwf adsum+ 1，F？ ; ? adsum+ 1？ =? AD？ H

? bsf？ ADCON0，GO _ DONE？ Start? AD？ Next conversion

? decfsz？ Counter, f? ; ? Conversion? Counter? -? 1? =? 0? -& gt；

? goto main 0 10； ? spread

? movfw adsum

? Movwf results; ? The result? =? w

? Dial LED000

? movfw adsum+ 1

? Movwf results; ? The result? =? w

? Dial LED000

? movlw . 16； ? AD？ Number of times? =? 10

? Movwf counter

? clrf adsum？ ; ? Qing? A/D？ Cumulative sum? /? General? register

? clrf adsum+ 1

? Go to MAIN0 10.

? ; ? /? ***? ***? ***? ***? ***? /serial output

LED000 movlw 8？ ; ? Serial output? 8? Bit? W? =? eight

Movwf count? ; ? Count? =? w

LED00 1 bcf？ Tricio, 4? ; ? clear

Btfsc result, 0? ; ? result.7=0？ -& gt；

bsf？ Tricio, 4? ; ? 00 10? 0000

bsf？ Tricio, 5 years old? ; ? Generate a clock pulse? GP4？ =? 1

bcf？ Tricio, 5 years old? ; ? GP4？ =? 0

RRF？ Results, 1? ; ? Move to the left to get the next result bit.

decfsz？ Count, 1? ; ? -? 1

goto led 00 1； ? & lt& gt？ 0 cycle low

Return? ; ? =? 0

? ; ? /? ***? ***? ***? ***? ***? /

? End; ? Program terminator