你好:
程式是RB0則左旋
RA4就右旋沒錯...
可否請先進指導一下用call寫不出來
SHIFT_VAL equ b'0000001'

start:

movlw SHIFT_VAL ;這兩行我覺得會出問題
movwf PORTD ;把這兩行丟到程式最前面讓他　　　　　　　　　　　　　　只執行一次看看


btfsc RA4
CALL led_left
　CALL delay_200ms
　　btfsc RB0
　　CALL led_right
　 CALL delay_200ms

led_left rlf PORTD

led_right rrf PORTD


只會最左邊量亮．．．跟最右邊亮．．．

MAIN_LOOP

CALL SCAN_KEY
call LED_PROCESS
GOTO MAIN_LOOP




SCAN_KEY
start:

movlw SHIFT_VAL
movwf PORTD

test_rb0 btfss RB0
goto test_1
goto led_left

led_left rlf PORTD
call delay_200ms
goto test_rb0
;
test_1 btfss RA4
goto test_rb0
goto led_right

led_right rrf PORTD
call delay_200ms
goto test_1

call LED_PROCESS

請問個位先進小弟想了很久還是寫不出來RB0跟RA4同時按下
8個LED 燈會閃爍可否教導一下．．謝謝

;--------- 200 md delay routine --------
;
delay_200ms:
movlw VAL_200MS
movwf count_200ms
loop_20ms call delay_10ms
decfsz count_200ms,F
goto loop_20ms
return
;
;-------- 10 ms delay routine ----------
;
delay_10ms:
movlw VAL_10MS
movwf count_10ms
loop_ms call delay_500us
decfsz count_10ms,F
goto loop_ms
return
;
;-------- 0.5 ms delay routine -----------
;
delay_500us:
movlw VAL_500US
movwf count_us
dec_loop nop
nop
nop
nop
nop
decfsz count_us,F
goto dec_loop
return

end

Loop
bsf ADCON0,GO
btfsc ADCON0,NOT_DONE
goto $-1
movf ADRESH,W ; move ADC result into W
movwf PORTD ;ADC result output to LEDs
===========================
　 你好：
這是201 ASP ADC 範例
想請問一下轉換後為例要清除進位狀態．謝謝

bcf STATUS,C
rrf ADRESH,W
movwf CCPR1L
movf ADRESH,W
banksel PR2
movwf PR2
banksel 0
goto Loop

謝謝先進的回答我以明白pwm 算法
再此想再請教一個問題
這是 201 ASP 裡的範例
Put CCP1 module in PWM mode, Configure CCP to clear DCB1 and DCB0 ( no Q cycles)

movlw 0x0C 這行會自己判斷 mode對嗎
　　　　　如果改成0x2c會如何呢
movwf CCP1CON
－－－－－－－－－－－－－－－－－－－－－－

看不太明白這意思也？？是自己會判斷還是如何呢??
bit 5-4 DC1B<1:0>: PWM Duty Cycle Least Significant bits
Capture mode:
Unused.
Compare mode:
Unused.
PWM mode:
These bits are the two LSbs of the PWM duty cycle. The eight MSbs are found in CCPR1L

你好:
請問該64uS ．Duty Cycle 怎算出來的呢.有看datasheet...但他是根據什麼算出來還是不明白．．煩請各位先進指導．．．謝謝


;Set up Period and Duty Cycle using an 8MHz oscillator
movlw b’01111111’
movwf PR2 ;Load a 64uS Period Value




movlw b’00011111’
movwf CCPR1L ; Load Duty Cycle Value
(25%) of PWM period

我把原ad復原...跑了一遍....還是一樣
會是Send_4bit這段程式的關係嗎
還是應體設的不對
謝謝......


InitLCD

BANKSEL ANSEL
bcf ANSEL,2; Set RA2 for digital I/O mode
andwf ANSEL,F
;================================
BANKSEL TRISD
bcf TRISA,2
movlw 0xc0 ; Initialize inputs/outputs for LCD
movwf TRISD

MCU:16F877A-I/P
實驗板:APP001 REV.2
我是用範例(LAB_ANS\lcd.asm)裡的程式跑(LAB_ANS\lab2.asm)
lcd螢幕只有出來第一行的 er
第二行的 Richey
想請教各位先進小弟的程式那邊有問題
謝謝!!

我只有動到這部份其餘都跟原範例程式相同

LCD_DATA equ PORTD
LCD_CNTL equ PORTD

#define RS PORTD,4
#define RW PORTD,5
#define E PORTA,2

InitLCD
BANKSEL TRISD
bcf TRISA,2
movlw 0xc0 movwf TRISD
...........以下都沒動到原程式..............................

EEPROM_Write()
WriteI2C(addr_hi); // Write Control to EEPROM
while(SSPCON2bits.ACKSTAT); // test for ACK condition, if received
I2C_Done(); // Clear SSPIF flag

WriteI2C(addr_low); // Write Address to EEPROM
while(SSPCON2bits.ACKSTAT); // test for ACK condition, if received
I2C_Done();

EE_READ()
WriteI2C(addr_hi); // Write Control to EEPROM
while(SSPCON2bits.ACKSTAT); // test for ACK condition, if received
I2C_Done(); // Clear SSPIF flag

WriteI2C(addr_low); // Write Address to EEPROM
while(SSPCON2bits.ACKSTAT); // test for ACK condition, if received
I2C_Done();

C:\Program Files\Microchip\Ans6-2\ex6-2.c:165:Error [1105] symbol 'addr_hi' has not been defined

該如何解決呢

請問一下
PIC16F(w100 ex6)的程式褊譯程式後出現.....
config bit 也有設定ㄚ...
Clean: Deleting intermediary and output files.
Clean: Done.
Executing: "C:\MCC18\mpasm\mpasmwin.exe" /q /p16F877A "ex6.asm" /l"ex6.lst" /e"ex6.err"
Error[105] C:\PROGRAM FILES\MICROCHIP\100 ANSWER\AEX6\EX6.ASM 9 : Cannot open file (Include File "p16F877a.inc" not found)
Error[113] C:\PROGRAM FILES\MICROCHIP\100 ANSWER\AEX6\EX6.ASM 28 : Symbol not previously defined (TRISD)
Error[113] C:\PROGRAM FILES\MICROCHIP\100 ANSWER\AEX6\EX6.ASM 30 : Symbol not previously defined (TRISD)
Error[113] C:\PROGRAM FILES\MICROCHIP\100 ANSWER\AEX6\EX6.ASM 31 : Symbol not previously defined (PORTD)
Error[113] C:\PROGRAM FILES\MICROCHIP\100 ANSWER\AEX6\EX6.ASM 32 : Symbol not previously defined (PORTD)
Message[305] C:\PROGRAM FILES\MICROCHIP\100 ANSWER\AEX6\EX6.ASM 35 : Using default destination of 1 (file).
Error[113] C:\PROGRAM FILES\MICROCHIP\100 ANSWER\AEX6\EX6.ASM 35 : Symbol not previously defined (PORTD)
Halting build on first failure as requested.
BUILD FAILED: Sat Jun 24 01:21:50 2006
是我那裡沒做對ㄚ..
謝謝

就是沒有數字的畫面
空空的
我寫數字1.2.3.4.5進去
獨取出來......Lcd顯示應該有1.2.3.4.5
但是沒有