stm32f10x_wwdg.lst

STM32利用正交编码器实现电机的控制

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# IAR ARM ANSI C/C++ Compiler V4.42A/W32               15/May/2008  12:06:34 #
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#    Source file     =  C:\David JIANG\ST MCU\Docs\STM32\AN_JIANG\TIM        #
#                       Encoder\example\FWLib\src\stm32f10x_wwdg.c           #
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C:\David JIANG\ST MCU\Docs\STM32\AN_JIANG\TIM Encoder\example\FWLib\src\stm32f10x_wwdg.c
      1          /******************** (C) COPYRIGHT 2007 STMicroelectronics ********************
      2          * File Name          : stm32f10x_wwdg.c
      3          * Author             : MCD Application Team
      4          * Date First Issued  : 09/29/2006
      5          * Description        : This file provides all the WWDG firmware functions.
      6          ********************************************************************************
      7          * History:
      8          * 05/21/2007: V0.3
      9          * 04/02/2007: V0.2
     10          * 02/05/2007: V0.1
     11          * 09/29/2006: V0.01
     12          ********************************************************************************
     13          * THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
     14          * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
     15          * AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
     16          * INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
     17          * CONTENT OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
     18          * INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
     19          *******************************************************************************/
     20          
     21          /* Includes ------------------------------------------------------------------*/
     22          #include "stm32f10x_wwdg.h"
     23          #include "stm32f10x_rcc.h"
     24          
     25          /* Private typedef -----------------------------------------------------------*/
     26          /* Private define ------------------------------------------------------------*/
     27          /* ----------- WWDG registers bit address in the alias region ----------- */
     28          #define WWDG_OFFSET       (WWDG_BASE - PERIPH_BASE)
     29          
     30          /* Alias word address of EWI bit */
     31          #define CFR_OFFSET        (WWDG_OFFSET + 0x04)
     32          #define EWI_BitNumber     0x09
     33          #define CFR_EWI_BB        (PERIPH_BB_BASE + (CFR_OFFSET * 32) + (EWI_BitNumber * 4))
     34          
     35          /* Alias word address of EWIF bit */
     36          #define SR_OFFSET         (WWDG_OFFSET + 0x08)
     37          #define EWIF_BitNumber    0x00
     38          #define SR_EWIF_BB        (PERIPH_BB_BASE + (SR_OFFSET * 32) + (EWIF_BitNumber * 4))
     39          
     40          /* --------------------- WWDG registers bit mask ------------------------ */
     41          /* CR register bit mask */
     42          #define CR_WDGA_Set       ((u32)0x00000080)
     43          
     44          /* CFR register bit mask */
     45          #define CFR_WDGTB_Mask    ((u32)0xFFFFFE7F)
     46          #define CFR_W_Mask        ((u32)0xFFFFFF80)
     47          
     48          #define BIT_Mask          ((u8)0x7F)
     49          
     50          /* Private macro -------------------------------------------------------------*/
     51          /* Private variables ---------------------------------------------------------*/
     52          /* Private function prototypes -----------------------------------------------*/
     53          /* Private functions ---------------------------------------------------------*/
     54          
     55          /*******************************************************************************
     56          * Function Name  : WWDG_DeInit
     57          * Description    : Deinitializes the WWDG  peripheral registers to their default
     58          *                  reset values.
     59          * Input          : None
     60          * Output         : None
     61          * Return         : None
     62          *******************************************************************************/
     63          void WWDG_DeInit(void)
     64          {
     65            RCC_APB1PeriphResetCmd(RCC_APB1Periph_WWDG, ENABLE);
     66            RCC_APB1PeriphResetCmd(RCC_APB1Periph_WWDG, DISABLE);
     67          }
     68          
     69          /*******************************************************************************
     70          * Function Name  : WWDG_SetPrescaler
     71          * Description    : Sets the WWDG Prescaler.
     72          * Input          : - WWDG_Prescaler: specifies the WWDG Prescaler.
     73          *                    This parameter can be one of the following values:
     74          *                       - WWDG_Prescaler_1: WWDG counter clock = (PCLK1/4096)/1
     75          *                       - WWDG_Prescaler_2: WWDG counter clock = (PCLK1/4096)/2
     76          *                       - WWDG_Prescaler_4: WWDG counter clock = (PCLK1/4096)/4
     77          *                       - WWDG_Prescaler_8: WWDG counter clock = (PCLK1/4096)/8
     78          * Output         : None
     79          * Return         : None
     80          *******************************************************************************/
     81          void WWDG_SetPrescaler(u32 WWDG_Prescaler)
     82          {
     83            u32 tmpreg = 0;
     84          
     85            /* Check the parameters */
     86            assert(IS_WWDG_PRESCALER(WWDG_Prescaler));
     87          
     88            /* Clear WDGTB[8:7] bits */
     89            tmpreg = WWDG->CFR & CFR_WDGTB_Mask;
     90          
     91            /* Set WDGTB[8:7] bits according to WWDG_Prescaler value */
     92            tmpreg |= WWDG_Prescaler;
     93          
     94            /* Store the new value */
     95            WWDG->CFR = tmpreg;
     96          }
     97