要求：
1、 主機通過向從機發送0XAA, 0X12, 0X34, 從機接收正確回傳0X55，接收錯誤回傳0XEE
2、 通過按鍵切換顯示計數：
- 主機顯示正确計數n1。另外收發超時機制也要列入錯誤計數處理，通信間隔為10ms 一次。
- 主機顯示錯誤計數n2。
从机接收数据的想法：存储数据后进行判断，再由串口发送0x55,0xee给主机
和C语言不同，不能用数组，只能采用MP0,IAP0的方法来存储数据(具体方法可以看手册）
下面两行是数据的存储，将ACC存储的值，放入IAR0中，再移动MP0 的地址，使IAR0指向下一个存储区
MOV IAR0,A
INC MP0 ;Put data into address
举个例子，将TXR_RXR的数据存储在MP0所指的地址存储区，利用IAR0进行存储（1~10），
数据的大小根据自己的需求决定（11~15），
最后再将地址，和存储大小初始化就好了
1 ;It is convenient to view the received data in RX_BUF 2 MOV A,TXR_RXR 3 MOV RX_BUF,A ;RCE BUF 4 5 ;TXR_RXR=IAR0，Put data into address 6 MOV IAR0,A 7 INC MP0 ;Put data into address 8 INC COUNT 9 10 ;storing 3 data 11 ;//-- if want to store more data ,plase change 3 --// 12 MOV A,3 13 SUB A,COUNT 14 MOV VALUE,A ;SEND 5 DATAS 15 SZ VALUE 16 ;//-- If you add the following code,plase change 5 --// 17 JMP $+5 18 19 ;addr and count init 20 MOV A,ADDR ;Read data from this address 21 MOV MP0,A 22 MOV A,0 23 MOV COUNT,A ;COUNT INIT
数据的取出判断，也是同理。地址随着循环指向下一个，再将IAR0的数据提取出到ACC
INC MP0
MOV A,IAR0
以下是取出判断的完整例子
;//data init and addr init
MOV A,10101010B ;reset aa,12,34
MOV VALUE1,A
MOV A,00010010B
MOV VALUE2,A
MOV A,00110100B
MOV VALUE3,A
MOV A,ADDR ;Read data from this address
MOV MP0,A
;//judge data
MOV A,IAR0 ;read data for judging
MOV ONE,A
SUBM A,VALUE1
SZ VALUE1
JMP ERROR ;if error then out
;
INC MP0
MOV A,IAR0
MOV TWO,A
SUBM A,VALUE2
SZ VALUE2
JMP ERROR
;
INC MP0
MOV A,IAR0
MOV THREE,A
SUBM A,VALUE3
SZ VALUE3
JMP ERROR
;//ture SET FLAG BIT addr init
SET TURE ;flag set
MOV A,ADDR ;Read data from this address
MOV MP0,A
具体的思路流程图如下：
以下是接收的完整代码
#INCLUDE HT66F3185.INC
;========================================================================================
MY_DATA .SECTION 'DATA' ;==DATA SECTION==
STACK_A DB ? ;STACK BUFFER FOR ACC
STACK_PSW DB ? ;STACK BUFFER FOR PSW
COUNT DB ? ;Number of times the address was moved
TX_DATA DB ? ;SEND DATA
;Judge Storage value
VALUE DB ?
VALUE1 DB ?
VALUE2 DB ?
VALUE3 DB ?
;Debug view value
ONE DB ?
TWO DB ?
THREE DB ?
RX_BUF DB ? ;REC DATA
;flag bit
TURE DB ?
FALSE DB ?
;MR0 -> address
ADDR DB ?
;========================================================================================
MY_CODE .SECTION 'CODE' ;==PROGRAM SECTION==
ORG 00H ;HT-66FX0 RESET VECTOR
JMP INIT
ORG 10H ;
JMP ISR_STM
ORG 2CH
JMP USART_ISM
;=======================================================================================
;Function name : INIT
;Description :
; @PIN_INIT USART PIN_INIT
; @CLOSE WDTC Disable WDT Function
; @UAST_INIT 9600 8 BIT MODE
; @ISR_INIT SET TIME interrupt
;========================================================================================
INIT:
;PIN_INIT
MOV A,00010100B
MOV PDS0,A
;CLOSE WDTC
MOV A,10101000B ;Disable WDT Function
MOV WDTC,A
;UAST_INIT
MOV A,10000000B
MOV UCR1,A
MOV A,11101100B
MOV UCR2,A
MOV A,00000000B
MOV UCR3,A
MOV A,51D
MOV BRG,A
MOV A,00001000B
MOV INTC2,A
SET EMI
SET URE
;ISR_INIT
SET MF1E ;ENABLE STM INTERRUPT
SET CTMAE ;ENABLE STMCCRA COMPARE INTERRUPT
CLR CTMC0 ;fINT=fSYS/4=2MHz
MOV A,11000001B ;STM IS IN THE TIMER/COUNTER MODE,
MOV CTMC1,A ;AND TP2CNT IS CLEARED BY TP2CCRA COMPARE MATCH
CLR CTMAF
CLR MF1F
SET EMI ;ENABLE THE MASTER(GLOBAL) INTERRUPT
;=======================================================================================
;Function name : MAIN
;Description : Variable initialization
;Parameter :
; @VALUE1 0XAA
; @VALUE2 0X12
; @VALUE3 0X34
; @ADDR Storage data address
; @COUNT Number of times the address was moved
;========================================================================================
MAIN:
CLR TXR_RXR
MOV A,10101010B ;VALUE1=0XAA
MOV VALUE1,A
MOV A,00010010B ;VALUE2=0X12
MOV VALUE2,A
MOV A,00110100B ;VALUE3=0X34
MOV VALUE3,A
MOV A,9CH ;Read data from this address
MOV ADDR,A
MOV MP0,A
CLR IAR0
MOV A,0
MOV COUNT,A
;=======================================================================================
;Function name : LOOP
;Description : Judge flag bit in ISR_STM to send data
;========================================================================================
LOOP:
SZ TURE
JMP TURE_SEND
SZ FALSE
JMP FALSE_SEND
LOOP_RETURN:
JMP LOOP
;IF TURE SEND 0X55
TURE_SEND:
MOV A,55H
MOV TX_DATA,A
CALL SEND
CLR TURE
JMP LOOP_RETURN
;IF FALSE SEND 0Xee
FALSE_SEND:
MOV A,11101110B
MOV TX_DATA,A
CALL SEND
CLR FALSE
JMP LOOP_RETURN
;=======================================================================================
;Function name : SEND
;Description : SEND DATA
;========================================================================================
SEND PROC
MOV A,TX_DATA
MOV TXR_RXR,A
REC:
SNZ TIDLE
JMP REC
RET
SEND ENDP
;=======================================================================================
;Function name : USART_ISM
;Description : 1.receive 5 datas and Open ISR_STM interrupt
; 2.ISR_STM interrupt TIME is 0.01s
;========================================================================================
USART_ISM:
MOV STACK_A,A ;PUSH ACC
MOV A,STATUS
MOV STACK_PSW,A ;PUSH STATUS
;isr count begin and count init
MOV A,20H ;SET ISR TIME
MOV CTMAL,A
MOV A,4EH
MOV CTMAH,A ;time = 0.01s
SET CTON ;START GTPU COUNTING
;It is convenient to view the received data in RX_BUF
MOV A,TXR_RXR
MOV RX_BUF,A ;RCE BUF
;TXR_RXR=IAR0，Put data into address
MOV IAR0,A
INC MP0 ;Put data into address
INC COUNT
;storing 3 data
;//-- if want to store more data ,plase change 3 --//
MOV A,3
SUB A,COUNT
MOV VALUE,A ;SEND 5 DATAS
SZ VALUE
;//-- If you add the following code,plase change 5 --//
JMP $+5
;addr and count init
MOV A,ADDR ;Read data from this address
MOV MP0,A
MOV A,0
MOV COUNT,A ;COUNT INIT
MOV A,STACK_PSW
MOV STATUS,A ;POP PSW
MOV A,STACK_A
RETI
;=======================================================================================
;Function name : ISR_STM
;Description : Judge whether the received data is correct
; Set the correct and error flag bits for judgment in loop
;========================================================================================
ISR_STM:
;stop isr count
CLR CTON ;STOP STM COUNTING
CLR CTMAF
MOV STACK_A,A ;PUSH A
MOV A,STATUS
MOV STACK_PSW,A ;PUSH STATUS
;data init and addr init
MOV A,10101010B ;reset aa,12,34
MOV VALUE1,A
MOV A,00010010B
MOV VALUE2,A
MOV A,00110100B
MOV VALUE3,A
MOV A,ADDR ;Read data from this address
MOV MP0,A
;judge data
MOV A,IAR0 ;read data for judging
MOV ONE,A
SUBM A,VALUE1
SZ VALUE1
JMP ERROR ;if error then out
;
INC MP0
MOV A,IAR0
MOV TWO,A
SUBM A,VALUE2
SZ VALUE2
JMP ERROR
;
INC MP0
MOV A,IAR0
MOV THREE,A
SUBM A,VALUE3
SZ VALUE3
JMP ERROR
;ture SET FLAG BIT addr init
SET TURE ;flag set
MOV A,ADDR ;Read data from this address
MOV MP0,A
RETURN:
MOV A,STACK_PSW
MOV STATUS,A ;POP STATUS
MOV A,STACK_A ;POP A
RETI
;error SET FLAG BIT and addr init
ERROR:
SET FALSE ;set error flag
MOV A,ADDR ;Read data from this address
MOV MP0,A
JMP RETURN
END