又来了，这里再给大家介绍一个好玩的东西。3 A* w/ O* y, ?. F& `+ j
这个也是参考github网友的代码，小小改进出来的：
" i) E' f9 I, H( e2 B# }$ j0 n; zhttp://github.com/RadioOperator/STM32_I2C_Scanner6 J. V* W$ c2 [/ M; Z6 R
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用BluePill最小板，烧入附件的代码，马上就有了一个I2C从设备地址扫描器。2 K6 C9 f% z3 N2 {9 l
# z0 m. d$ k; z. b9 l此外，这一套源码，还可以发展出许多其他应用：# |7 ~$ ]9 p4 ]* P1 g
1. STM32，VCP（CDC）to I2C 的样板。
% z2 e' G9 s# X d! }, `/ v2. 硬件I2C应用。
4 g( i2 V" i( N# Y3. 实现I2C与VCP上位机之间通信。
( @5 [' y0 B9 E. i% s# S% }4. 研究学习使用LL库。( ^* @+ k/ P% L
如果改用其他，请注意，原代码设定MCU的工作频率为48MHz，我们通常用72MHz。2 h( J* A2 d. H
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使用情况，PC的终端输出：( J I8 N5 G! B( u- i
- STM32 I2C Scanner V0.01 :
- ]- _ D7 U! [ - ! B! v0 S; j4 V
- PB6 -> I2C1_SCL
. Z, D" n8 n' N - PB7 -> I2C1_SDA
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- type 's' to scan( |' k9 s7 h8 m' |
3 o7 @# V6 L& Z- SCAN...2 [3 p7 v4 Q; a+ W T( M7 Q8 g
- 100KHz 200KHz 300KHz 400KHz1 k1 P4 ^! J$ A7 V
- 0x01 --- --- --- --- " |6 h1 n8 D; A& P! ?; u" j
- 0x02 --- --- --- --- ' u0 J- _% P+ R4 T+ ]8 }9 n4 q
- 0x03 --- --- --- ---
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- ..................................1 A3 A" R* v/ u! f/ t0 E9 ]# k& \, e
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- b+ K" \% p6 E( `( P# I, I- 0x64 --- --- --- ---
$ v8 t( ?% \: n3 d, w* q - 0x65 --- --- --- ---
/ k& I% g, n o2 d# y5 a: _6 g0 U - 0x66 --- --- --- --- ' s5 p) Q7 V/ n) l
- 0x67 --- --- --- --- 4 Z* z& Y& j5 J+ m
- 0x68 V V V V 9 o0 v3 A' _9 ^# i9 V
- 0x69 --- --- --- --- 1 z3 N! v% B$ Y! [1 R3 G/ I
- 0x6A --- --- --- --- . ?- s# H( X& t3 o
- 0x6B --- --- --- ---
& H0 y( q; z2 R+ `8 n7 E( a/ @7 {3 g! S - 0x6C --- --- --- --- : N! I9 U" |" _: \' A4 c/ m2 q7 g- G
- 0x6D --- --- --- --- : F0 j' x4 p7 ] b& T
- 0x6E --- --- --- --- ! H" L: A! u0 V3 j
- 0x6F --- --- --- ---
, N: H$ c) r% \4 @2 Q6 d( E - 0x70 --- --- --- --- 8 m7 W4 S$ [; B; F* ^& J& F
- 0x71 --- --- --- --- : S7 @# j% X6 y, `' c9 ^) B
- 0x72 --- --- --- ---
, c1 K0 e3 `4 G: _! ~ - 0x73 --- --- --- --- 5 ]! i; c: g& O
- 0x74 --- --- --- ---
2 }1 |3 X2 M7 m! h& y. C) x - 0x75 --- --- --- --- 1 M, M: e6 O' x) G
- 0x76 V V V V ( y& }! U1 z0 t( U$ j- N) A
- 0x77 --- --- --- --- * v; a* U4 A" u* W+ |
- 0x78 --- --- --- --- / K2 o9 Y! f) `9 w/ |
- 0x79 --- --- --- ---
) z' x; C6 ]& A5 I* k+ q. Y - 0x7A --- --- --- ---
6 N4 F0 U! C* S" _! s& i - 0x7B --- --- --- --- 8 I! m# l2 w( s% X
- 0x7C --- --- --- ---
: D5 _: {3 W7 E( h3 V; M$ c2 s1 c - 0x7D --- --- --- ---
8 _1 }& m# E, `9 ?: A4 h0 d - 0x7E --- --- --- ---
+ T# m @; K/ b' v5 A - 0x7F --- --- --- --- j, C) i k) m! I7 }2 |
% G3 L9 j" ^# u% B! {- STM32 I2C Scanner V0.01 :
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2 D% J- N6 j) o2 E, q9 A% F- PB6 -> I2C1_SCL1 p" Y5 ?! s- d6 ?& r( O' k* J9 Z
- PB7 -> I2C1_SDA5 U. _* B* W1 T& G3 w8 d. v
" S4 }9 z# L2 w" }: ?- type 's' to scan3 ^/ r' U5 o5 z
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以前也试过I2C设备扫描，串口打印。没你这个方便，直接USB虚拟串口，一个板解决。