upsd3300_pca-pwm.lst

增强型8位单片机upsd33xx系列芯片PWM结合ADC例程

C51 COMPILER V7.50   UPSD3300_PCA_PWM                                                      07/11/2005 15:30:33 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE UPSD3300_PCA_PWM
OBJECT MODULE PLACED IN upsd3300_pca-pwm.OBJ
COMPILER INVOKED BY: C:\keil\C51\BIN\C51.EXE upsd3300_pca-pwm.c OPTIMIZE(9,SIZE) BROWSE DEBUG OBJECTEXTEND

line level    source

   1          /*------------------------------------------------------------------------------
   2          upsd3300_pca-pwm.c
   3          
   4          Version:
   5          August 2004 Version 2.0 - Updated include file names, modified comments.
   6          
   7          Dependencies: None.
   8          
   9          Description:
  10          The uPSD3300 PCA-PWM device driver is intended to provide a set of standard
  11          functions for using the PCA-PWM features.  The various modes of the PCA-PWM are:
  12          Mode0 - Stop
  13          Mode1 - 8-bit fixed frequency PWM
  14          Mode2 - 8-bit variable frequency PWM
  15          Mode3 - 16-bit fixed frequency PWM
  16          
  17          
  18          Copyright (c) 2004 STMicroelectronics Inc.
  19          
  20          This example demo code is provided as is and has no warranty,
  21          implied or otherwise.  You are free to use/modify any of the provided
  22          code at your own risk in your applications with the expressed limitation
  23          of liability (see below) so long as your product using the code contains
  24          at least one uPSD product (device).
  25          
  26          LIMITATION OF LIABILITY:   NEITHER STMicroelectronics NOR ITS VENDORS OR 
  27          AGENTS SHALL BE LIABLE FOR ANY LOSS OF PROFITS, LOSS OF USE, LOSS OF DATA,
  28          INTERRUPTION OF BUSINESS, NOR FOR INDIRECT, SPECIAL, INCIDENTAL OR
  29          CONSEQUENTIAL DAMAGES OF ANY KIND WHETHER UNDER THIS AGREEMENT OR
  30          OTHERWISE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
  31          ------------------------------------------------------------------------------*/
  32          
  33          #include "upsd3300.h"
  34          #include "upsd3300_pca-pwm.h"
  35          
  36          
  37          /*------------------------------------------------------------------------------
  38          PWM_Mode1_Init(channel, duty_cycle)
  39          
  40          This function initializes the PCA to function in PWM Mode 1 with the specified
  41          duty cycle.
  42          
  43          channel - unsigned char
  44                  - Channel to initialize (only 0 is supported at this time).
  45          duty_cycle  - unsigned char
  46                      - sets the duty cycle for the pulse
  47          ------------------------------------------------------------------------------*/
  48          void PWM_Mode1_Init(unsigned char channel, unsigned char duty_cycle)
  49          {
  50   1          switch(channel)
  51   1          {
  52   2          case 0:
  53   2              P4SFS0 |= 0x01;
  54   2              P4SFS1 &= 0xFE;
  55   2              PCACL0 = PCACH0 = 0x00;
C51 COMPILER V7.50   UPSD3300_PCA_PWM                                                      07/11/2005 15:30:33 PAGE 2   

  56   2              CCON2 = 0x10;
  57   2              PCACON0 = 0x00;
  58   2              TCMMODE0 = 0x41;        //CAPCOML0=CAPCOMH0=duty_cycle;
  59   2              CAPCOMH0 = duty_cycle;
  60   2              PCACON0 |= 0x40;
  61   2              break;
  62   2      
  63   2          case 1:
  64   2              break;
  65   2          }
  66   1      }
  67          
  68          
  69          /*------------------------------------------------------------------------------
  70          PwmInit_Mode1(PwmDuty_Mode1)
  71          
  72          This function initializes the PCA to function in PWM Mode 1 with the specified
  73          duty cycle.
  74          
  75          PwmDuty_Mode1   - unsigned char
  76                          - sets the duty cycle for the pulse.
  77          ------------------------------------------------------------------------------*/
  78          /*
  79          void PwmInit_Mode1(unsigned char PwmDuty_Mode1)
  80          {
  81              {
  82              //0.1 Configure pins as PCA function
  83              P4SFS0=0xff;
  84              P4SFS1=0;
  85              //0.2 initialize PCA0 counter
  86              PCACL0=PCACH0=0;
  87          
  88              //1.1 set PCA0CLK frequency
  89              CCON0=0x10;
  90              //1.2 select PCA0CLK as PCA0 clock source
  91              //2. Configure PCA0 Counter operating mode
  92              PCACON0=0x00;
  93              //3. Set TCM0 operationg mode
  94              TCMMODE0=0x41;
  95              //4. Set duty for TCM0
  96              CAPCOML0=CAPCOMH0=PwmDuty_Mode1;
  97              //5. Start PCA0 counter
  98              PCACON0|=0x40;
  99              }
 100          }
 101          */
 102          
 103          /*------------------------------------------------------------------------------
 104          PwmSetDuty_Mode1(PwmDuty_Mode1)
 105          
 106          This function initializes the PCA to function in PWM Mode 1 with the specified
 107          duty cycle.
 108          
 109          PwmDuty_Mode1   - unsigned char
 110                          - sets the duty cycle for the pulse.
 111          ------------------------------------------------------------------------------*/
 112          /*
 113          void PwmSetDuty_Mode1(unsigned char PwmDuty_Mode1)
 114          {
 115              CAPCOMH0=PwmDuty_Mode1;
 116          }
 117          
C51 COMPILER V7.50   UPSD3300_PCA_PWM                                                      07/11/2005 15:30:33 PAGE 3   

 118          */


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     28    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  0 WARNING(S),  0 ERROR(S)