Main.c

#include <XMC1100.h>    //SFR declarations of the selected device

#include "gpio_XMC1100_tssop38.h"

#include "types.h"

#define DISPLAY_EN      P0_9_set();    //Display Enable

#define DISPLAY_DATA_MOD  P0_12_set();  //Display Datamode

#define DISPLAY_SET_DATA0  P1_2_set();    //Display Data0 set

#define DISPLAY_SET_DATA1  P1_3_set();    //Display Data1 set

#define DISPLAY_SET_DATA2  P1_4_set();    //Display Data2 set

#define DISPLAY_SET_DATA3  P0_0_set();    //Display Data3 set

#define DISPLAY_SET_DATA4  P0_1_set();    //Display Data4 set

#define DISPLAY_SET_DATA5  P0_2_set();    //Display Data5 set

#define DISPLAY_SET_DATA6  P0_3_set();    //Display Data6 set

#define DISPLAY_SET_DATA7  P0_4_set();    //Display Data7 set

#define DISPLAY_DIS      P0_9_reset();  //Display Disable

//#define DISPLAY_WRITE    P0_8_reset();  //Display Write

#define DISPLAY_INS_MOD    P0_12_reset();  //Display Instructionmode

#define DISPLAY_RSET_DATA0  P1_2_reset();  //Display Data0 reset

#define DISPLAY_RSET_DATA1  P1_3_reset();  //Display Data1 reset

#define DISPLAY_RSET_DATA2  P1_4_reset();  //Display Data2 reset

#define DISPLAY_RSET_DATA3  P0_0_reset();  //Display Data3 reset

#define DISPLAY_RSET_DATA4  P0_1_reset();  //Display Data4 reset

#define DISPLAY_RSET_DATA5  P0_2_reset();  //Display Data5 reset

#define DISPLAY_RSET_DATA6  P0_3_reset();  //Display Data6 reset

#define DISPLAY_RSET_DATA7  P0_4_reset();  //Display Data7 reset

////////////////////////////////////////////////////////////////////////////////

// LCD Ausführungszeiten (MS=Millisekunden, US=Mikrosekunden)

#define LCD_BOOTUP_MS           15*100 // * 100 = * 1000 us

#define LCD_ENABLE_US           2 //2*10us

#define LCD_WRITEDATA_US        5 //5*10us

#define LCD_COMMAND_US          5 //5*10us

#define LCD_SOFT_RESET_MS1      5*100

#define LCD_SOFT_RESET_MS2      1*100

#define LCD_SOFT_RESET_MS3      1*100

#define LCD_SET_4BITMODE_MS     5*100

#define LCD_CLEAR_DISPLAY_MS    2*100

#define LCD_CURSOR_HOME_MS      2*100

////////////////////////////////////////////////////////////////////////////////

// LCD Befehle und Argumente.

// Zur Verwendung in lcd_command

// Clear Display -------------- 0b00000001

#define LCD_CLEAR_DISPLAY       0x01

// Cursor Home ---------------- 0b0000001x

#define LCD_CURSOR_HOME         0x02

// Set Entry Mode ------------- 0b000001xx

#define LCD_SET_ENTRY           0x04

#define LCD_ENTRY_DECREASE      0x00

#define LCD_ENTRY_INCREASE      0x02

#define LCD_ENTRY_NOSHIFT       0x00

#define LCD_ENTRY_SHIFT         0x01

// Set Display ---------------- 0b00001xxx

#define LCD_SET_DISPLAY         0x08

#define LCD_DISPLAY_OFF         0x00

#define LCD_DISPLAY_ON          0x04

#define LCD_CURSOR_OFF          0x00

#define LCD_CURSOR_ON           0x02

#define LCD_BLINKING_OFF        0x00

#define LCD_BLINKING_ON         0x01

// Set Shift ------------------ 0b0001xxxx

#define LCD_SET_SHIFT           0x10

#define LCD_CURSOR_MOVE         0x00

#define LCD_DISPLAY_SHIFT       0x08

#define LCD_SHIFT_LEFT          0x00

#define LCD_SHIFT_RIGHT         0x04

// Set Function --------------- 0b001xxxxx

#define LCD_SET_FUNCTION        0x20

#define LCD_FUNCTION_4BIT       0x00

#define LCD_FUNCTION_8BIT       0x10

#define LCD_FUNCTION_1LINE      0x00

#define LCD_FUNCTION_2LINE      0x08

#define LCD_FUNCTION_5X7        0x00

#define LCD_FUNCTION_5X10       0x04

#define LCD_SOFT_RESET          0x30

bool WaitForSysTickInterrupt=1;        //Indicates if SysTickInterrupt occurs (is set to 0 if interrupt occurs)

//SyssTickInterrupt

void SysTick_Handler(void)

{

  WaitForSysTickInterrupt=0;

}

void wait_10us(uint32_t wait10us)

{

  uint32_t count=0;

  //SYSTICK-SETUP => Interrupt every 10us

  SystemCoreClockUpdate();

  SysTick_Config(SystemCoreClock / 100000);

  WaitForSysTickInterrupt=1;

  //Wait "wait10us" interrupts

  while(count < wait10us) {

    if(!WaitForSysTickInterrupt) {

      WaitForSysTickInterrupt=1;

      count++;

    }

  }

  //disable SysTickCounter

  SysTick->CTRL = 0;

}

//Setzte die gewünschten Datenbits

void lcd_datapin(uint16_t data)

{

uint16_t mask= 0x01;

int i=0;

  //Alle Bits Reset

  DISPLAY_RSET_DATA0;DISPLAY_RSET_DATA1;DISPLAY_RSET_DATA2;DISPLAY_RSET_DATA3;

  DISPLAY_RSET_DATA4;DISPLAY_RSET_DATA5;DISPLAY_RSET_DATA6;DISPLAY_RSET_DATA7;

  if(data>0)

  {

    //Setzt die Datenbits des Displays die in data stehen

    for(i=0;i<=7;i++)

    {

        if(data&mask) //ist  BitX gesetzt?

        {

          switch(i)//Setzte BitX am DIsplay

          {

          case 0: DISPLAY_SET_DATA0; break;

          case 1:  DISPLAY_SET_DATA1; break;

          case 2:  DISPLAY_SET_DATA2; break;

          case 3:  DISPLAY_SET_DATA3; break;

          case 4:  DISPLAY_SET_DATA4; break;

          case 5:  DISPLAY_SET_DATA5; break;

          case 6:  DISPLAY_SET_DATA6; break;

          case 7:  DISPLAY_SET_DATA7; break;

          }

        }

      data=data>>1; //nächste Bit

      if(data==0) //wenn kein bit mehr vorhanden break

        break;

    }

  }

}

int main(void)

{

  //--------------------------------------------------------------------------------------------------

  //----CLOCK-SETUP-----------------------------------------------------------------------------------

  SCU_GENERAL->PASSWD = 0x000000C0UL;

  SCU_CLK->CLKCR = 0x3FF00401UL;      // 8 MHz MCLK, 8 MHz PCLK

  while((SCU_CLK->CLKCR)&0x40000000UL);  // wait for VDDC to stabilize

  SCU_GENERAL->PASSWD = 0x000000C3UL;

  //--------------------------------------------------------------------------------------------------

P0_9_set_mode(OUTPUT_PP_GP);  //Display Enable

P0_12_set_mode(OUTPUT_PP_GP);  //Display Datamode

P1_2_set_mode(OUTPUT_PP_GP);  //Display Data0 set

P1_3_set_mode(OUTPUT_PP_GP);  //Display Data1 set

P1_4_set_mode(OUTPUT_PP_GP);  //Display Data2 set

P0_0_set_mode(OUTPUT_PP_GP);  //Display Data3 set

P0_1_set_mode(OUTPUT_PP_GP);  //Display Data4 set

P0_2_set_mode(OUTPUT_PP_GP);  //Display Data5 set

P0_3_set_mode(OUTPUT_PP_GP);  //Display Data6 set

P0_4_set_mode(OUTPUT_PP_GP);  //Display Data7 set

//ALLE PINS AUF 0

  DISPLAY_INS_MOD;

  DISPLAY_DIS;

  lcd_datapin(0x00);

//###################################      START INIT

  wait_10us(LCD_BOOTUP_MS);

  //3 mal softreset

  lcd_datapin(LCD_SOFT_RESET);

  wait_10us(450);

  DISPLAY_EN;

  wait_10us(1);

  DISPLAY_DIS;

  wait_10us(11);

  DISPLAY_EN;

  wait_10us(1);

  DISPLAY_DIS;

  wait_10us(3);

  DISPLAY_EN;

  wait_10us(1);

  DISPLAY_DIS;

  DISPLAY_EN;

  lcd_datapin(0x0E); //LCD on , display on, curser on,

  wait_10us(5);

  lcd_datapin(0x01); //clera

  wait_10us(160);

  lcd_datapin(0x06); //entery mod, decement on, schift off

  wait_10us(5);

while(1)

{

}

  return 0;

}