pwm.c

STM32的PWM详细例程

/*

                         \\\|///
                       \\  - -  //
                        (  @ @  )
+---------------------oOOo-(_)-oOOo-------------------------+
|                 智林STM32开发板试验程序                   |
|                 Timer2 PWM 输出方式试验                   |
|                 刘笑然 by Xiaoran Liu                     |
|                        2008.4.16                          |
|                                                           |
|           智林测控技术研究所 ZERO research group          |
|                      www.the0.net                         |
|                             Oooo                          |
+-----------------------oooO--(   )-------------------------+
                       (   )   ) /
                        \ (   (_/
                         \_)     

*/
/*----------------------------------------------------------*\
 |  引入相关芯片的头文件                                    |
\*----------------------------------------------------------*/
#include <stm32f10x_lib.h>                        // STM32F10x Library Definitions
#include "STM32_Init.h"                           // STM32 Initialization
/*----------------------------------------------------------*\
 | HARDWARE DEFINE                                          |
\*----------------------------------------------------------*/
#define LED             ( 1 << 5 )                // PB5: LED D2
/*----------------------------------------------------------*\
 |  Delay                                                   |
 |  延时 Inserts a delay time.                              |
 |  nCount: 延时时间                                        |
 |  nCount: specifies the delay time length.                |
\*----------------------------------------------------------*/
void Delay(vu32 nCount) {
  for(; nCount != 0; nCount--);
  }
/*----------------------------------------------------------*\
 | MIAN ENTRY                                               |
\*----------------------------------------------------------*/
int main (void) {
  stm32_Init ();                                  // STM32 setup
  for(;;) {
    GPIOB->ODR &= ~LED;                           // switch on LED
	Delay(2000000);
    GPIOB->ODR |=  LED;                           // switch off LED
	Delay(2000000);
    }
  }
/*----------------------------------------------------------*\
 | END OF FILE                                              |
\*----------------------------------------------------------*/