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16f628a難道不能用內(nèi)置晶振么 |
| 作者：newer_zhk 欄目：單片機(jī) |
燒寫時(shí)出現(xiàn)如下錯(cuò)誤 ICDWarn0033: MPLAB ICD 2 does not SUPPORT PROGRAMMING this DEVICE if both the internal oscillator and internal MCLR are selected. You may continue PROGRAMMING, but you are encouraged to cancel, reconfigure your DEVICE, and try again. When Internal MCLR is used with MPLAB ICD 2 for PROGRAMMING, both Vpp and Vdd are powered together, and then Vpp is pulled high to Vihh to enter PROGRAMMING mode. This means that your code will be running before Vpp goes to Vihh. If that code makes use of port pins that correspond to Clock and Data pins in PROGRAMMING mode, there is a chance their values may not be 0, as necessary to enter PROGRAMMING mode. Therefore, the DEVICE could not be reprogrammed. 程序如下 是不是初始化端口配置有問(wèn)題啊 list p=16F628A ; list directive to define processor #include <p16F628A.inc> ; processor specific variable definitions errorlevel -302 ; suppress message 302 from list file ; __CONFIG _CP_OFF & _DATA_CP_OFF & _LVP_OFF & _BOREN_OFF & _MCLRE_OFF & _WDT_OFF & _PWRTE_ON & _INTOSC_OSC_NOCLKOUT ; '__CONFIG' directive is used to embed configuration word within .asm file. ; The lables following the directive are located in the respective .inc file. ; See data sheet for additional information on configuration word settings. ;***** VARIABLE DEFINITIONS w_temp EQU 0x71 ; variable used for context saving status_temp EQU 0x72 ; variable used for context saving ;定義主程序用寄存器 count EQU 0x74 ; 定義計(jì)數(shù)寄存器地址 tmp1 EQU 0x75 ; 定義臨時(shí)寄存器地址 x EQU 0x76 ; 延時(shí)子程序外循環(huán)計(jì)數(shù)器 y EQU 0x77 ; 延時(shí)子程序內(nèi)循環(huán)計(jì)數(shù)器 tmp2 EQU 0x78 count1 EQU 0x79 SCK EQU 2 ;RB2 SDI EQU 3 ;RB3 SWITCH EQU 4 ;RB4 ;********************************************************************** ORG 0x000 ; processor reset vector nop goto main ; go to beginning of program ORG 0x004 ; interrupt vector location movwf w_temp ; save off current W register contents movf STATUS,w ; move status register into W register movwf status_temp ; save off contents of STATUS register ; isr code can go here or be located as a call subroutine elsewhere movf status_temp,w ; retrieve copy of STATUS register movwf STATUS ; restore pre-isr STATUS register contents swapf w_temp,f swapf w_temp,w ; restore pre-isr W register contents retfie ; return from interrupt ;****************************************************** main ;****************************************************** init CLRF INTCON CLRF PORTA ;Initialize PORTA and PORTB by CLRF PORTB ;setting OUTPUT data latches MOVLW 0x07 ;Turn comparators off and MOVWF CMCON ;enable pins for I/O ;functions BCF STATUS, RP1 BSF STATUS, RP0 ;SELECT Bank1 CLRF PCON BSF PCON,OSCF MOVLW 0x1F ;VALUE used to initialize ;data direction MOVWF TRISA ;Set RA<4:0> as inputs ;TRISA<5> always read as ‘1’. ;TRISA<7:6> depend on oscillator mode CLRF TRISB BCF |
| 2樓： | >>參與討論 |
| 作者： xieyuanbin 于 2005/1/19 19:36:00 發(fā)布：
上面的提示已經(jīng)告訴你很明白了。 |
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| 3樓： | >>參與討論 |
| 作者： lhjlxr 于 2005/1/19 20:58:00 發(fā)布：
回復(fù):16F628A難道不能用內(nèi)置晶振么 直接燒程序,即可提示不用管.cpu工作會(huì)正常的. |
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| 4樓： | >>參與討論 |
| 作者： newer_zhk 于 2005/1/19 21:43:00 發(fā)布：
關(guān)鍵是最后一句啊 是不是真的不能再次編程了啊 |
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