參數(shù)資料
型號(hào): TAS3001EVM
廠商: Texas Instruments, Inc.
英文描述: TAS3001EVM(TAS3001評(píng)估板)
中文描述: TAS3001EVM(TAS3001評(píng)估板)
文件頁(yè)數(shù): 26/72頁(yè)
文件大?。?/td> 162K
代理商: TAS3001EVM
5-6
;
RET
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
;******************** stop Condition
I2C_Stop BIS.B #SDA,&SDAEN
;set SDA = low
BIS.B #SCL,&SCLEN
;set SCL = low
CALL
#NOP9
;Delay 18 cycles before issuing stop
CALL
#NOP9
BIC.B #SCL,&SCLEN
;set SCL = high
DS_busy3 BIT.b #SCL,&SCLIN
;test if DS part busy (C=0)
JNCDS_busy3
;yes, loop again
CALL
#NOP9
BIC.B #SDA,&SDAEN
;set SDA = high
;tempend
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
RET
;******************** delays routines
NOP9
NOP
; 9 cycles delay
NOP8
RET
; 8 cycles delay
;****************************************************************************
; Key switch interrupt service routine
;****************************************************************************
SW_ISR
;start of interrupt service routine for key switches
DINT
;disable interrupts
CALL
#DELAY2
;delay for switch debounce
;test for SW1+6 pressed=shift (EQ) mode
;SW1 pressed
;NO, jump to next SW
;delay before testing 2nd SW
;SW6 pressed also
;YES - jump to toggle LED
;LED on (=shift mode)
;YES - jump to mute
;turn LED on
;delay before testing SW again
clear SW1 flag
;volume = maximum
;Yes - SW1_test
;increase pointer to higher setting
Vol_Pntr,Tbl_Pntr ;set table pointer = Vol up data
#Loop
;call I2C send routine
SW1_TEST BIT.b #SW1,P1IN
;SW1 still pressed
JZ
SW1_FUNC2
;YES (active low), increase volume
BIS.b #LED,&LED_OUT
;turn LED off
JMP
SW_DONE
;jump to end of SW routine
TOG_LED
XOR.b #LED,&LED_OUT
;toggle LED when SW1&6 pressed
;= shift mode on/off
JMP
SW_DONE
;jump to end of SW routine
SW1_MUTE
XOR
#1,MUTE
;toggle mute setting (0 = mute off)
JZ
MUTE_OFF
;jump if mute=0 - turn mute off
CALL
#MUTE_ON
;call mute function (changed to function
;so it could be used elsewhere in program)
SW1_FUNC
BIT.b #SW1,&SW1_3IF
JZ
SW2_EQ
CALL
#DELAY2
BIT.b #SW6,&SW4_6IF
JNZ
TOG_LED
BIT.b #LED,&LED_OUT
JZ
SW1_MUTE
SW1_FUNC2 BIC.b #LED,&LED_OUT
CALL
BIC.b #SW1,&SW1_3IF
CMP
JEQ
ADD
MOV
CALL
#DELAY
#360,Vol_Pntr
SW1_TEST
#10,Vol_Pntr
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