systeminitialize.c

利用freescale公司的MC9S08QE128开发的一套游戏机程序

#include "derivative.h" /* include peripheral declarations */
#include "SystemInitialize.h"


void EnablePullups(void) 
{

  PTAPE = 0xFF;                           // Enable PORT A Internal Pullups       
 
  PTCPE = 0xFF;                           // Enable PORT C Internal Pullups
  PTDPE = 0xFF;                           // Enable PORT D Internal Pullups
  PTEPE = 0xFF;                           // Enable PORT E Internal Pullups
  PTHPE = 0xFF;                           // Enable PORT H Internal Pullups
  PTFPE = 0xFF;                           // Enable PORT F Internal Pullups
  PTGPE = 0xFF;                           // Enable PORT G Internal Pullups
  
  PTJPE = 0xFF;                           // Enable PORT J Internal Pullups
  
} //end EnablePullups

void SelectDriveStrength_High(void) 
{
  PTDDS = 0xFF;                           // PORT D High output drive strength
  PTEDS = 0xFF;                           // PORT E High output drive strength
  PTHDS = 0xFF;                           // PORT H High output drive strength
}

void InitIO_Direction() 
{
  PTHDD = 0xFF;
  PTEDD_PTEDD7 = 1;
  
  PTDDD_PTDDD0 = 1;
  PTDDD_PTDDD1 = 1;
  
  PTFDD_PTFDD2 = 1;
  PTEDD_PTEDD4 = 1;
  PTFDD_PTFDD1 = 1;
  
  //
  PTFDD_PTFDD5 = 0;
  PTFDD_PTFDD6 = 0;
  PTFDD_PTFDD7 = 0;
  PTCDD_PTCDD0 = 0;
  
  PTJDD_PTJDD0 = 1;
  PTDDD_PTDDD4 = 1;
  PTDDD_PTDDD3 = 1;
}

void InitIO() 
{

  EnablePullups();
  //SelectDriveStrength_High();
  InitIO_Direction();  
}

void InitKBI(void) 
{
  
  /*KBI1 Init*/
  KBI1SC_KBIE   = 0;                      // Mask KBI1 interrupts
                                           
                                              
  KBI1ES_KBEDG3 = 0;                      // KBI1P3 internal pull-up, falling edge/low level
  KBI1ES_KBEDG2 = 0;                      // KBI1P2 internal pull-up, falling edge/low level
  KBI1ES_KBEDG1 = 0;                      // KBI1P1 internal pull-up, falling edge/low level

                                           
  KBI1PE_KBIPE3 = 1;                      // Enable KBI1P3 interrupts  
  KBI1PE_KBIPE2 = 1;                      // Enable KBI1P2 interrupts
  KBI1PE_KBIPE1 = 1;                      // Enable KBI1P1 interrupts  
                                           
  KBI1SC_KBIMOD = 0;                      // Detect edges only
                                             
  KBI1SC_KBACK  = 1;                      // Clear possible false interrupts

  
  KBI1SC_KBIE   = 1;                      // Enable KBI1 interrupts  

} //end InitKBI

void InitADC(void) 
{
  
  byte done = 0x00;
  ADCSC1 = 0x1F;                          /* Disable interrupts 
                                             Disable continuous conversions
                                             Disable ADC by setting all ADCH bits */
  ADCSC2 = 0x40;                          /* Select H/W trigger
                                             Disable compare function */
  ADCCFG = 0x03; 	                        /* ADIV=input clock/8
                                             ADLSMP=long sample time
                                             MODE=8-bit conversion
                                             ADICLK=async clock */
  APCTL1 = 0x01;                          // Enable ADP0 as ADC input
} //end InitADC

// Initialize Systems
void InitSystems() 
{  
  SOPT1  = 0x23;                          // Disable COP,RSTO, enable STOP,BKGD,RESET
  SOPT2  = 0x08;                          // SPI1 on PTE2/3/4/5, IIC1 on PTA2/3
  SPMSC1 = 0x00;                          // Disable LVD
  SPMSC2 = 0x00;                          // Disable power-down modes
  SPMSC3 = 0x00;                          // Disable LVWIE, low trip points
  SCGC1  = 0xFF;                          // Enable bus clock to peripherals
  SCGC2  = 0xFF;                          // Enable bus clock to peripherals
} 


// Initialize device
void InitDevice(void) 
{
  // Enable CoinIn 
  PTGD_PTGD1 = 1;
  PTGDD_PTGDD1 = 1;
  
  // ENABLE LATCH
  PTJD_PTJD0 = 0;
  PTDD_PTDD4 = 0;
  PTDD_PTDD3 = 0;  
}

void InitTimer() 
{
  // timer3 for buttom
  TPM3MOD = 0x138;                        // debounce time = 20ms
  TPM3SC  = 0x0f;                         // timer interrupt disabled, clock source=Bus rate clock=4MHz, divider=128  
  
  // timer2 for delay
  TPM2MOD = 0xFFFF;                        // debounce time = ?s
  TPM2SC  = 0x0f;                          // timer interrupt disabled, clock source=Bus rate clock=4MHz, divider=128
  
  // timer1 for display
  TPM1MOD = 0x009F;                        // debounce time = ms
  TPM1SC  = 0x0F;                          // timer interrupt disabled, clock source=Bus rate clock=4MHz, divider=128
  
  
  
}