ADC 400F Especificações descarregar pdf (Página 12)

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List 1 (Continued)

LINE LOC OBJ SOURCE

61 402b ’00d3 JMP START

62

63 ;

64 ;Subroutine :– DATAIN

65 ;

66 402d 9122 DATAIN MOV ADATA,B ;Read ADC mode/channel

67 402f d10b MOV B,R11 ;Put ADC mode/channel

68 ;in R11

69 4031 53f0 AND #0F0H,B ;Retain channel number

70 4033 cc RR B ;* * * * * * * * *

71 4034 cc RR B ;* Map channel numbers *

72 4035 cc RR B ;* to registers R64–R91 *

73 4036 cc RR B ;* R10 contains storage *

74 4037 5c02 MPY #002,B ;* address *

75 4039 5840 ADD #40H,B ;* Even numbers – MS Byte*

76 403b d10a MOV B,R10 ;* Odd numbers – LS Byte *

77 ;* * * * * * * * *

78 403d f9 RTS

79 ;

80 ;Subroutine :– ADC

81 ;

82 403e 2203 ADC MOV #003H,A

83 4040 a4802e SBIT1 CSBIT ;Set ADC Chip Select high.

84 4043 b2 LOOP1 DEC A ;Chip Select stays high

85 4044 ’06fd JNE LOOP1 ;while A is not 0.

86 4046 c5 CLR B

87 4047 512e MOV B,DDATA ;CS goes low

88 4049 2207 MOV #7,A

89 404b 2131 MOV A,SPICTL ;Enable SPI transmission

90 404d ’76020b19 JBIT1 MSLSB,LS1ST

91 4051 120b MOV R11,A

92 4053 2139 MOV A,SPIDAT

93 ; MOV R11,SPIDAT ;Send mode/channel data

94 ;to TLC2543

95 4055 ’a74031fc FLAG1 JBIT0 SPIF,FLAG1;If SPIF=0, repeat check.

96 4059 a21437 MOV SPIBUF,R20 ;Put received MS Byte

97 ;in R20

98 405c 71390b MOV R11,SPIDAT ;Send mode/channel data

99 ;to TLC2543

100 405f ’a74031fc FLAG2 JBIT0 SPIF,FLAG2;If SPIF=0, repeat check.

101 4063 a21537 MOV SPIBUF,R21 ;Put received LS Byte

102 ; in R21

103 4066 ’77020b32 JBIT0 MSLSB,RETURN ;If MSLSB=0, go

104 ;to RETURN

105 406a 120b LS1ST MOV R11,A

106 406c 2139 MOV A,SPIDAT

107 406e ’a74031fc FLAG3 JBIT0 SPIF,FLAG3;If SPIF=0, repeat check.

108 4072 a21537 MOV SPIBUF,R21 ;Put received LS Byte

109 ;in R21

110 4075 120b MOV R11,A

111 4077 2139 MOV A,SPIDAT

112 4079 ’a74031fc FLAG4 JBIT0 SPIF,FLAG4;If SPIF=0, repeat check.

113 407d a21437 MOV SPIBUF,R20 ;Put received MS Byte

114 ;in R20

115 4080 2208 MOV #08,A ;* * * * * * * *

116 4082 d516 CLR R22 ;* *

117 4084 dd14 LOOP2 RRC R20 ;* Reformat MS Byte *

118 4086 df16 RLC R22 ;* *

119 4088 b2 DEC A ;* Put result in R20 *

120 4089 ’06f9 JNZ LOOP2 ;* *

121 408b 421614 MOV R22, R20 ;* * * * * * * *

122 408e 2208 MOV #08,A ;* * * * * * * *

123 4090 d517 CLR R23 ;* *

124 4092 dd15 LOOP3 RRC R21 ;* Reformats LS Byte *

125 4094 df17 RLC R23 ;* *

126 4096 b2 DEC A ;* Put result in R21 *

127 4097 ’06f9 JNZ LOOP3 ;* *

128 4099 421715 MOV R23,R21 ;* * * * * * * *

ADC 400F Especificações Página 12

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