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#include "msp430x43x.h" // Standard Equations
;******************************************************************************
; 名称：温度二极管测试程序
;
; 说明: 此程序适用于内部有ADC12模块的430芯片，利用ADC12通道10的温度二极管测量
; 温度。
; 采用单通道单次转换方式（6次），六次的测量值去掉其中的二个极端值，其余
; 平均后作为测量结果，并转换成相应的温度数值(摄氏度）。
;
#define SUM R7 ;result
#define MAX R8 ;highest result
#define MIN R9 ;lowest result
;******************************************************************************
;------------------------------------------------------------------------------
main ORG 08000h ; Program Start
;------------------------------------------------------------------------------
RESET mov #0600h,SP ; Initialize stackpointer
StopWDT mov #WDTPW+WDTHOLD,&WDTCTL ; Stop watchdog
;
SetupADC12 mov #ADC12ON+REFON+REF2_5V+SHT0_6,&ADC12CTL0
; Turn on ADC12, 2.5Vref, set SHT0
; for longer sampling required by
; temp diode.
;mov #ADC12ON+REFON+SHT0_6,&ADC12CTL0
; Turn on ADC12, 1.5Vref, set SHT0
; for longer sampling required by
; temp diode.
mov #SHP,&ADC12CTL1 ; Use sampling timer
mov.b #INCH_10+SREF_1,&ADC12MCTL0 ; Select channel A10, Vref+
bis #BIT0,&ADC12IE ; Enable ADC12IFG.0 for ADC12MEM0
;
mov #03600h,R15 ; Delay needed for ref start-up
L$1 dec R15 ; See datasheet for details
jnz L$1 ;
;
bis #ENC,&ADC12CTL0 ; Enable conversions
eint ; Enable interrupts
;
Mainloop clr SUM ; initialize buffers
clr MAX ; ADCmin→MAX
mov #0FFFFh,MIN ; ADCmax→MIN
mov #6,R15 ;
AD bis #ADC12SC,&ADC12CTL0 ; Start conversions
bis #CPUOFF,SR ; Wait for conversion completion
add R6,SUM ;
cmp R6,MAX ; Result＞MAX
jhs L$2 ; no
mov R6,MAX ; yes,actualize MAX
L$2 cmp R6,MIN ; Result＜MIN
jlo L$3 ; no
mov R6,MIN ; yes,actualize MIN
L$3 dec R15 ; Counter - 1
jnz AD ;
sub R8,SUM ; subtract highest result
sub R9,SUM ; subtract lowest result
rra SUM ; result/4
rra SUM ;
mov R7,R6 ;
DispTemp mov #0h,R15 ; Clear table pointer
mov #0h,R5 ; Load R5 with min. temp
jmp First_cmp ; Compare without incrementing
CMPloop incd R15 ; Point to next value in table
dadd #1,R5 ; Decimally increment R5
First_cmp cmp Temp_Tab1(R15),R6 ; Compare A/D resultV
;cmp Temp_Tab2(R15),R6 ; Compare A/D result
jge CMPloop ; Jump to increment and compare
jmp Mainloop ; SET BERAKPOINT HERE.
; Done comparing. Temp in R5
;
;------------------------------------------------------------------------------
; Temperature Table
; These values assume nominal values for the temp diode and
; temperature coefficient. They also assume the 2.5V internal
; reference is used for the conversion.
;------------------------------------------------------------------------------
Temp_Tab1 DW 064Fh ; 0C
DW 0655h
DW 065Bh
DW 0660h
DW 0666h
DW 066Ch ; 5C
DW 0672h
DW 0678h
DW 067Dh
DW 0683h
DW 0689h ;10C
DW 068Fh
DW 0695h
DW 069Bh
DW 06A0h
DW 06A6h ;15C
DW 06ACh
DW 06B2h
DW 06B8h
DW 06BDh
DW 06C3h ;20C
DW 06C9h
DW 06CFh
DW 06D5h
DW 06DBh
DW 06E0h ;25C
DW 06E6h
DW 06ECh
DW 06F2h
DW 06F8h
DW 06FDh ;30C
DW 0703h
DW 0709h
DW 070Fh
DW 0715h
DW 071Bh ;35C
DW 0720h
DW 0726h
DW 072Ch
DW 0732h
DW 0738h ;40C
DW 073Dh
DW 0743h
DW 0749h
DW 074Fh
DW 0755h ;45C
DW 075Bh
DW 0760h
DW 0766h
DW 076Ch
DW 0772h ;50C
DW 0778h
DW 077Dh
DW 0783h
DW 0789h
DW 078Fh ;55C
DW 0795h
DW 079Ah
DW 07A0h
DW 07A6h
DW 07ACh ;60C
DW 07B2h
DW 07B8h
DW 07BDh
DW 07C3h
DW 07C9h ;65C
DW 07CFh
DW 07D5h
DW 07DAh
DW 07E0h
DW 07E6h ;70C
DW 0FFFh ;Too high
;------------------------------------------------------------------------------
; Temperature Table(2)
; These values assume nominal values for the temp diode and
; temperature coefficient. They also assume the 1.5V internal
; reference is used for the conversion.
;------------------------------------------------------------------------------
Temp_Tab2 DW 0A84h ; 0C
DW 0A8Eh
DW 0A97h
DW 0AA1h
DW 0AABh
DW 0AB4h ; 5C
DW 0ABEh
DW 0AC8h
DW 0AD1h
DW 0ADBh
DW 0AE5h ;10C
DW 0AEFh
DW 0AF8h
DW 0B02h
DW 0B0Ch
DW 0B15h ;15C
DW 0B1Fh
DW 0B29h
DW 0B32h
DW 0B3Ch
DW 0B46h ;20C
DW 0B50h
DW 0B59h
DW 0B63h
DW 0B6Dh
DW 0B76h ;25C
DW 0B80h
DW 0B8Ah
DW 0B93h
DW 0B9Dh
DW 0BA7h ;30C
DW 0BB0h
DW 0BBAh
DW 0BC4h
DW 0BCEh
DW 0BD7h ;35C
DW 0BE1h
DW 0BEBh
DW 0BF4h
DW 0BFEh
DW 0C08h ;40C
DW 0C11h
DW 0C1Bh
DW 0C25h
DW 0C2Eh
DW 0C38h ;45C
DW 0C42h
DW 0C4Ch
DW 0C55h
DW 0C5Fh
DW 0C69h ;50C
DW 0C72h
DW 0C7Ch
DW 0C86h
DW 0C8Fh
DW 0C99h ;55C
DW 0CA3h
DW 0CACh
DW 0CB6h
DW 0CC0h
DW 0CCAh ;60C
DW 0CD3h
DW 0CDDh
DW 0CE7h
DW 0CF0h
DW 0CFAh ;65C
DW 0D04h
DW 0D0Dh
DW 0D17h
DW 0D21h
DW 0D2Bh ;70C
DW 0FFFh ;Too high
;------------------------------------------------------------------------------
ADC12ISR ; Interrupt Service Routine for ADC12
;------------------------------------------------------------------------------
mov &ADC12MEM0,R6 ; Move result, IFG is reset
bic #CPUOFF,0(SP) ; Return active
reti ;
;
;------------------------------------------------------------------------------
; Interrupt Vectors
;------------------------------------------------------------------------------
ORG 0FFFEh ; MSP430 RESET Vector
DW RESET ;
ORG 0FFEEh ; ADC12 Interrupt Vector
DW ADC12ISR ;
END
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