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有使用LPC1768 ADC时,会遇到ADC转换值突然变,然后又变回来。
一开始用使用了5路ADC,为了缩小排查范围,改成了仅用一路,中断法和查询法都试过,均如此。
用示波器也检查过ADC的输入,并无跳动现象。查了几天了,烦恼中........
序号 Ad0 AD1 AD2 AD3 AD4
0 309 0 0 0 0
1 327 0 0 0 0
2 3299 0 0 0 0
3 310 0 0 0 0
4 318 0 0 0 0
5 314 0 0 0 0
6 310 0 0 0 0
7 310 0 0 0 0
8 309 0 0 0 0
9 310 0 0 0 0
10 312 0 0 0 0
11 317 0 0 0 0
12 312 0 0 0 0
13 309 0 0 0 0
14 315 0 0 0 0
15 312 0 0 0 0
16 310 0 0 0 0
17 310 0 0 0 0
18 315 0 0 0 0
19 312 0 0 0 0
20 309 0 0 0 0
21 308 0 0 0 0
22 312 0 0 0 0
23 310 0 0 0 0
24 310 0 0 0 0
25 308 0 0 0 0
26 310 0 0 0 0
27 310 0 0 0 0
28 317 0 0 0 0
29 310 0 0 0 0
30 309 0 0 0 0
31 312 0 0 0 0
32 311 0 0 0 0
33 309 0 0 0 0
34 309 0 0 0 0
35 313 0 0 0 0
36 310 0 0 0 0
37 309 0 0 0 0
38 311 0 0 0 0
39 312 0 0 0 0
40 310 0 0 0 0
41 319 0 0 0 0
42 3299 0 0 0 0
43 310 0 0 0 0
44 311 0 0 0 0
45 308 0 0 0 0
46 311 0 0 0 0
47 310 0 0 0 0
48 310 0 0 0 0
49 308 0 0 0 0
50 309 0 0 0 0
51 310 0 0 0 0
52 319 0 0 0 0
53 313 0 0 0 0
54 318 0 0 0 0
55 3292 0 0 0 0
56 310 0 0 0 0
57 309 0 0 0 0
58 310 0 0 0 0
59 317 0 0 0 0
60 313 0 0 0 0
61 310 0 0 0 0
62 310 0 0 0 0
63 309 0 0 0 0
64 310 0 0 0 0
65 312 0 0 0 0
66 308 0 0 0 0
67 306 0 0 0 0
68 312 0 0 0 0
69 315 0 0 0 0
70 310 0 0 0 0
71 310 0 0 0 0
72 309 0 0 0 0
73 311 0 0 0 0
74 310 0 0 0 0
75 309 0 0 0 0
76 313 0 0 0 0
77 312 0 0 0 0
78 310 0 0 0 0
79 310 0 0 0 0
80 307 0 0 0 0
81 312 0 0 0 0
82 2475 0 0 0 0
83 308 0 0 0 0
84 310 0 0 0 0
85 309 0 0 0 0
86 311 0 0 0 0
87 311 0 0 0 0
88 309 0 0 0 0
89 309 0 0 0 0
90 308 0 0 0 0
91 310 0 0 0 0
92 309 0 0 0 0
93 312 0 0 0 0
94 308 0 0 0 0
95 310 0 0 0 0
96 310 0 0 0 0
97 315 0 0 0 0
98 314 0 0 0 0
99 310 0 0 0 0
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