初始化代码
: u1 u( J9 p9 E7 h: i; v( ^- void Encoder_Init_TIM3(void); D, e- P0 U3 {. b d
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' L+ h7 X9 _& Z - TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; . }$ E* T0 R4 a8 J$ y/ _: S
- TIM_ICInitTypeDef TIM_ICInitStructure; $ h0 Z/ m7 l7 {# o' N1 Z b
- GPIO_InitTypeDef GPIO_InitStructure;
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2 k& ~& U% Z% H1 g% z - RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);//?????2???2 N$ D- I: C, ?
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);//??PA PB????
8 i3 f |' `0 Z0 \ - RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);; _. }6 }5 A; |9 r' {) W5 n3 [
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- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6; //???? PA15% p' L% u# F, R8 ^# {. B$ b# ]
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //????
0 ?" W! h, U0 l8 `/ _ - GPIO_Init(GPIOA, &GPIO_InitStructure); //?????????GPIOA
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- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7; //???? PB3
; ?5 U: E$ H8 ?6 G; D0 _, g - GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //????
$ N: w& u' ]' j* F) } - GPIO_Init(GPIOA, &GPIO_InitStructure); //?????????GPIOB
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- TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
8 C$ r4 ^- m* \* ] - TIM_TimeBaseStructure.TIM_Prescaler = 0x0; // ???? . M3 g; z0 ~& a n
- TIM_TimeBaseStructure.TIM_Period = 65535; //??????????% r- Y9 \2 @! G" w
- TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;//??????:???
3 B1 _8 d! ?& y8 }% f3 v5 V6 K' @' { - TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;//??????
# M* x) D) E& N7 o+ Z$ c6 D - TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); //??????2, h/ V( B t# X' m! n, {
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# U" G" J' I. d9 Q' | - TIM_EncoderInterfaceConfig(TIM3, TIM_EncoderMode_TI12, TIM_ICPolarity_Rising, TIM_ICPolarity_Rising);//???????3
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- TIM_ICStructInit(&TIM_ICInitStructure); //?TIM_ICInitStruct ?????????????
3 K0 u w/ u4 H: k- o0 i/ G - TIM_ICInitStructure.TIM_ICFilter = 10; //???????- V3 D: x. }, m( {; @
- TIM_ICInit(TIM3, &TIM_ICInitStructure);//?? TIM_ICInitStruct ???????? TIMx
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# [0 A: g+ u3 Q5 q: {* Q4 n - TIM_ClearFlag(TIM3, TIM_FLAG_Update);//??TIM??????" t! W$ R# T0 m! y( C
- TIM_ITConfig(TIM3, TIM_IT_Update, ENABLE);//???????
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- TIM_SetCounter(TIM3,0);' M1 r" ]9 C% @. b# |8 N
- TIM_Cmd(TIM3, ENABLE); //?????2
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2 R, T r3 s- } b" } - void Encoder_Init_TIM4(void)7 w+ \& F- D$ R$ D
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- g! n1 A! P0 Y$ ?5 u" ^ - TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; ( E/ w; x4 E% }0 H# g3 H
- TIM_ICInitTypeDef TIM_ICInitStructure; - b( \; A: O& a3 n/ T3 i t5 r
- GPIO_InitTypeDef GPIO_InitStructure;$ n7 W8 }; d; H
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1 J X. W+ ?2 [& X* a% C+ [- k - RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);//?????2???
/ L5 i7 c& T9 U1 L& M3 Y- T, L - RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);//??PA PB????9 ]( D1 T1 p4 Z4 T
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
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/ o9 N+ g( _1 p3 A - GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6; //???? PA156 }- [& A3 B( C1 z* `
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //????
9 R0 T5 X8 c* q$ n2 ^& b5 O - GPIO_Init(GPIOB, &GPIO_InitStructure); //?????????GPIOA
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- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7; //???? PB3
: P4 s5 D. _0 _( n - GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //????5 x5 }: x. S+ z9 E0 k
- GPIO_Init(GPIOB, &GPIO_InitStructure); //?????????GPIOB
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0 r- \9 D+ ?$ w - TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
- Y6 @# T) ?8 M6 v4 C! O - TIM_TimeBaseStructure.TIM_Prescaler = 0x0; // ????
% u/ q5 G, z' s - TIM_TimeBaseStructure.TIM_Period = 65535; //??????????
6 F6 i" X3 w3 m - TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;//??????:???- t( M6 l# M/ a% p1 b4 c) V& U( c
- TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;//?????? $ a9 T9 U1 X% X2 x9 i; E3 R* `2 c
- TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure); //??????2
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/ ~% g u! A- e8 B# C - TIM_EncoderInterfaceConfig(TIM4, TIM_EncoderMode_TI12, TIM_ICPolarity_Rising, TIM_ICPolarity_Rising);//???????3
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9 \ b8 r. B0 x - TIM_ICStructInit(&TIM_ICInitStructure); //?TIM_ICInitStruct ?????????????1 @0 Q& N6 }# M" v/ u+ t. i
- TIM_ICInitStructure.TIM_ICFilter = 2; //???????
$ R& u! _* o5 y - TIM_ICInit(TIM4, &TIM_ICInitStructure);//?? TIM_ICInitStruct ???????? TIMx5 t0 U$ c8 l6 I7 X
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; E3 I3 K- M; O1 N* X$ V3 Q - TIM_ClearFlag(TIM4, TIM_FLAG_Update);//??TIM??????
( h7 W- z, m+ l4 A, Y# e - TIM_ITConfig(TIM4, TIM_IT_Update, ENABLE);//???????
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; E, G/ q# B$ u0 ~' C" N3 g( X - TIM_SetCounter(TIM4,0);
- ~& }- @1 x+ p- B' n" x( d - TIM_Cmd(TIM4, ENABLE); //?????2
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0 }$ C) N* {$ L3 V- X- F读取函数5 V5 Y$ ~0 U P( l. j& U; S; S
- int Read_EncoderB(void)
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- int encoder_num;5 s2 t1 {3 k* I- m6 f0 N$ d% \
- encoder_num = (int)((int16_t)(TIM3->CNT)); 9 {- |( I2 B: S" b
- //TIM_SetCounter(TIM3, 0);
5 N# |' i2 J. Q; g3 Q1 P% @ - return encoder_num;+ S& u5 T9 M |7 ?# U
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$ i" S6 y, d8 C - int Read_EncoderA(void): ?6 A6 X6 T8 S) W) r8 T- K
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- int encoder_num;1 P, g/ X. Z9 W: {( D7 T
- encoder_num = (int)((int16_t)(TIM4->CNT));
4 v, I3 f/ K; h0 |& D) g: } - //TIM_SetCounter(TIM3, 0);
' o) b: U5 P; f/ P) D, O) G - return encoder_num;8 I: j4 F. C+ u& e; ?" V4 }( K U
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置零函数
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- TIM_SetCounter(TIM3, 0);
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