复用功能	没有重映射	部分重映射	完全重映射
TIM3_CH1	PA6	PB4	PC6
CH2	PA7	PB5	PC7
CH3	PB0	PB0	PC8
CH4	PB1	PB1	PC9

1. /**重映射 tim3 使得PC7 PC8输出Pwm波   
   : T5 V/ h* d2 Y) A4 \, n
2.   ******************************************************************************
   
3.   * @file    Project/Template/main.c
   * o1 D, D+ l2 E1 r3 D4 o
4.   * @author  MCD Application Team
     z5 U; o6 a' D# P0 h
5.   * @version V3.0.0
     D' A# `- ~0 N, p. p7 z8 a' B
6.   * @date    04/06/2009
   5 @, ?& u0 \" H+ ?- \* J
7.   * @brief   Main program body
   " [% j: r8 |% `% I. U
8.   ******************************************************************************
   
9.   * @copy
   % R: z. Z% m! O4 t! {
10.   *
    
11.   * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
    
12.   * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
    
13.   * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
    0 H. ^5 l- j9 ^5 f4 D  ]' X2 r1 }! D
14.   * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
    ; C  f9 f7 |6 n9 S- m( A  y
15.   * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
    
16.   * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
    " J0 _9 Z: E! R/ C. A4 V2 D
17.   *
    ! S8 N2 u7 l. |' n
18.   * <h2><center>© COPYRIGHT 2009 STMicroelectronics</center></h2>
    1 C" u& Z7 Z, B1 k( C( o. }* [! j
19.   */
    . E2 f5 v( i- ]# C$ o  y0 W
20. /* Includes ------------------------------------------------------------------*/
    0 k# V! @1 _# J9 b6 c
21. #include "stm32f10x.h"
    + U6 k8 p4 c8 c
22. #include "stm32f10x_tim.h"
    $ z1 N; [1 o" W5 j7 C! e* l( V- M
23. #include "misc.h"
    
24. void GPIO_AFIODeInit(void);//这个函数不能落下，否则不能成功
    
25. TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;//配置PWM需要使用的结构体声名
    
26. TIM_OCInitTypeDef          TIM_OCInitStructure;
    
27. u16 CCR3_Val =250;
    
28. u16 CCR4_Val =250;
    1 b( r. ]( a0 L, {
29.                
    
30. void GPIO_Config(void);
    
31. void Timer_Config(void);
    
32. /**
    2 X+ u3 U% l5 q1 r5 D( @
33.   * @brief  Delay program.
    ! R1 b) H5 E4 j8 U
34.   * @param  None
    
35.   * @retval : None
    $ f5 k6 ]- R& c% p' t: O
36.   */
    
37. void  Delay (u32 nCount)
    8 G3 }7 y+ C) ~1 s; g7 k
38. {
    
39.   for(; nCount != 0; nCount--);
    . d+ P) ]4 H* e0 L
40. }
    5 P$ ^) K1 E2 d3 s& \
41. /**
    
42.   * @brief  Main program.
    " x% J/ Z- w! N  W( p( B5 p
43.   * @param  None
    
44.   * @retval : None
    ( r3 G6 K3 B2 R: s
45.   */
    
46. int main(void)
    ( {8 g- }6 F) T0 j1 \: H' O
47. {
    2 A) w% c1 l9 F. a3 \5 l9 H5 O  [
48. /* Setup STM32 system (clock, PLL and Flash configuration) */
    
49. SystemInit();
    
50. GPIO_Config();
    
51. Timer_Config();
    & U5 R3 Z& Z) u; J! q" z' Q8 }
52. /* Infinite loop */
    
53. while (1) {
    
54.                }
    * M4 j, }3 ~5 ~6 K
55. }
    , w/ y' z  A7 ~' _) [/ q
56. /**
    ; y: ~( f) z0 m' m
57.   * @brief  GPIO_Config program.
    4 I4 u' A6 ]& ?+ d
58.   * @param  None
    
59.   * @retval : None
    
60.   */
    
61. void GPIO_Config(void)
    
62. {
    . x- C, G/ T6 X
63.   GPIO_InitTypeDef GPIO_InitStructure;
    ( F0 i- z& I+ O: ?7 t4 z7 y
64.    
    4 i8 b! r3 ]5 _( [
65.   RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |            RCC_APB2Periph_GPIOC |RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE | RCC_APB2Periph_AFIO, ENABLE);
    " i2 O" i; s! W4 A' |
66. 
    
67.    GPIO_AFIODeInit();  //刚开始没有这个语句，所以一直没有重映射成功
    
68.    GPIO_PinRemapConfig(GPIO_FullRemap_TIM3 , ENABLE); //这个就是重映射功能函数
    " ]0 B! ?1 F( e& U/ T; u
69. /*GPIOA Configuration: TIM3 channel 3 and 4 as alternate function push-pull */
    
70.   GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_0 | GPIO_Pin_1;
    
71.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //这里也要注意
    
72.   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    : d1 d" x% {) U
73.   GPIO_Init(GPIOB, &GPIO_InitStructure); //这四句是为了校验究竟PB0，PB1是否还有PWM输出
    " }# {+ ^4 `% `! Y8 F7 N: J; U" F5 J
74.   GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_8 | GPIO_Pin_9;
    
75.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    / d) ^% q( Y3 e7 L3 X  s0 ^
76.   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    
77.   GPIO_Init(GPIOC, &GPIO_InitStructure);
    
78.    
    
79.    
    ) H0 T9 b5 R" W8 C7 h2 E  ^
80. }
    
81. void Timer_Config(void)
    
82. {
    : g0 n% x* y2 W* D) C* z
83. RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
    
84. 
    
85.   TIM_DeInit(TIM3);
    
86.   TIM_TimeBaseStructure.TIM_Period = 999;  //在下一个更新事件装入活动的自动重装载寄存器周期的值
    ' d9 e9 I  @8 e( y, t; _
87.   TIM_TimeBaseStructure.TIM_Prescaler = 0; //  设置了用来作为 TIMx 时钟频率除数的预分频值
      b% g. G. |+ t* B
88.   TIM_TimeBaseStructure.TIM_ClockDivision = 0;   TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
    
89.   TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
    / r2 z# ^7 W0 Q1 Y% J/ R  J
90.   /* PWM1 Mode configuration: Channel3 */
    
91.   TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;  //TIM_OCMode
    
92.   TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
    2 e' ?- R7 f8 t6 X
93.   TIM_OCInitStructure.TIM_Pulse = CCR3_Val;      //设置了待装入捕获比较寄存器的值
    
94.   TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low; //TIM_OCPolarity :TIM 输出比较极性高
    8 b3 A' M( Q* w( g9 n& j
95.   TIM_OC3Init(TIM3, &TIM_OCInitStructure);
    2 }- q& J% V) ]1 V5 ~+ R
96.   TIM_OC3PreloadConfig(TIM3, TIM_OCPreload_Enable);  //使能或者失能 TIM3 在 CCR3 上的预装载寄存器
    
97.   /* PWM1 Mode configuration: Channel4 */
    
98.   TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
    
99.   TIM_OCInitStructure.TIM_Pulse = CCR4_Val;
    
100.   TIM_OC4Init(TIM3, &TIM_OCInitStructure);
     8 y% h# _. ~$ \2 Q, O  `
101.   TIM_OC4PreloadConfig(TIM3, TIM_OCPreload_Enable);
     
102.   /* TIM3 enable counter */
     
103.   TIM_Cmd(TIM3, ENABLE);          //开启时钟，别落下
     + G# a6 U' f7 r5 k) m" I
104. }
     
105. /**
     
106.   * @brief  EXTI_Config Program.
     2 b2 t7 l$ z; P2 F4 U% @
107.   * @param  None
     
108.   * @retval : None
     ; ^, g6 r8 c+ x! ^' Q
109.   */
     
110. 
     2 _5 X9 h+ A8 D' W
111. /**
     
112.   * @brief  Configures the nested vectored interrupt controller.
     . y9 n& X0 {- o4 H7 x9 d
113.   * @param  None
     
114.   * @retval : None
     $ s* z# H+ c8 ?
115.   */
       v9 D4 }& Y& p
116. 
     
117. #ifdef  USE_FULL_ASSERT
     
118. /**
     $ U$ B3 q$ E0 U2 ~6 M- O/ l: H
119.   * @brief  Reports the name of the source file and the source line number
     ' L! e2 a; ?( B
120.   *   where the assert_param error has occurred.
     
121.   * @param file: pointer to the source file name
     
122.   * @param line: assert_param error line source number
     $ A! S: o9 I' X6 @; Z* Z* _
123.   * @retval : None
     7 k2 P' g0 F$ w) Q9 I
124.   */
     
125. void assert_failed(uint8_t* file, uint32_t line)
     
126. {
     2 f. Z, w* R6 L0 ]# {2 C
127.   /* User can add his own implementation to report the file name and line number,
     
128.      ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
     - F: ~5 F, M% h( d2 C  y
129.   /* Infinite loop */
     
130.   while (1)
     3 G: ?6 _  t, R6 W0 O
131.   {
     8 d8 G* J5 G. j# c1 i7 }, o
132.   }
     ! P+ f! ^8 j0 g7 n& K0 R) C
133. }
     
134. #endif
     ; c8 U/ R- e2 j% c: v( ]
135. /**
     
136.   * @}
       W1 E# i2 p5 x. y
137.   */
     / ?# e# H& ]9 X/ G9 ]6 r7 S
138. 
     ' Q$ l7 H7 q9 x( |- Y! ^
139. /******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/

复制代码