STM8 LCD

Sixiu Electronic Studio "Xiangyun Little Prince" development version

Define Pins

/**************************Port/pin definition area****************************/

#define LCDRS PF_ODR_ODR0 //LCD1602 data/command selection port

#define LCDRW PF_ODR_ODR3 //LCD1602 read and write control port

#define LCDEN PF_ODR_ODR4 //LCD1602 enable signal port

#define LCDDATA PB_ODR //LCD1602 data port D0 to D7

initialization

/****************************************************************/

//LCD1602 initialization function LCD1602_init(), no parameters or return values

/****************************************************************/

void LCD1602_init(void)

{

  LCD1602_Write(0x38,0); //Configure 16*2 display, 5*7 dot matrix, 8-bit data interface

  LCD1602_Write(0x0C,0); //Set to display, do not display cursor

  LCD1602_Write(0x06,0); //Address automatically increases by 1 after writing characters

  LCD1602_Write(0x01,0); //display cleared to 0, data pointer cleared to 0

}

Write LCD module command or data function

void LCD1602_Write(u8 cmdordata,u8 writetype)

{

  if(writetype==0)//Judge the write type

    LCDRS=0; //Write command information

  else

    LCDRS=1; //Write data information

  LCDDATA=cmdordata; //Write information to the data line port

  delay(5); //delay to wait for stabilization

  LCDEN=1; //module enable

  delay(5); //delay waiting for writing

  LCDEN=0; //Module is disabled

}

Display character function

void LCD1602_DIS(void)

{

  u8 i; //define control loop variable i

  LCD1602_Write(0x80,0); //Select the first line

  for(i=0;i<16;i++)

  {

      LCD1602_Write(table1[i],1); //Write the contents of table1[]

      delay(5);

  }

  LCD1602_Write(0xC0,0); //Select the second line

  for(i=0;i<16;i++)

  {

      LCD1602_Write(table2[i],1); //Write the contents of table2[]

      delay(5);

  }

}

Move screen

void LCD1602_MOV(void)

{

  u8 i;

  LCD1602_Write(0x01,0); //Clear screen

  LCD1602_Write(0x90,0); //Select the end of the first line (invisible)

  for(i=0;i<16;i++)

  {

      LCD1602_Write(table1[i],1); //Write the contents of table1[]

      delay(2);

  }

  LCD1602_Write(0xD0,0); //Select the end of the second line (invisible)

  for(i=0;i<16;i++)

  {

      LCD1602_Write(table2[i],1); //Write the contents of table2[]

      delay(2);

  }

  for(i=0;i<16;i++)

  {

      LCD1602_Write(0x18,0); //Loop 16 times and move the screen left one by one

      delay(100);

  }

}

Set address to write character

/****************************************************************/

//Set the address to write the character function LCD1602_DIS_CHAR(), with parameters x, y, z and no return value

//x represents the row of the 1602 LCD, y represents the column address, and z represents the character to be written

/****************************************************************/

void LCD1602_DIS_CHAR(u8 x,u8 y,u8 z)

{

  u8 address;

  if(x==1) //If you want to display it in the first line

    address=0x80+y; //The first row address + column address

  else

    address=0xC0+y; //The first address of the second row + the column address

  LCD1602_Write(address,0); //Set display address

  LCD1602_Write(z,1); //Write character data

}

/****************************************************************/

//Combined graphics display function LCD1602_DIS_FACE(), invisible parameters and return values

/****************************************************************/

void LCD1602_DIS_FACE(void)

{

  LCD1602_DIS_CHAR(1,1,'*');

  LCD1602_DIS_CHAR(2,2,'.');

  LCD1602_DIS_CHAR(1,3,'*');

  LCD1602_DIS_CHAR(1,4,'|');

  LCD1602_DIS_CHAR(2,4,'|');

  LCD1602_DIS_CHAR(1,5,'*');

  LCD1602_DIS_CHAR(2,6,'_');

  LCD1602_DIS_CHAR(1,7,'*');

  LCD1602_DIS_CHAR(1,8,'|');

  LCD1602_DIS_CHAR(2,8,'|');

  LCD1602_DIS_CHAR(1,9,'*');

  LCD1602_DIS_CHAR(2,10,'x');

  LCD1602_DIS_CHAR(1,11,'*');

  LCD1602_DIS_CHAR(1,12,'|');

  LCD1602_DIS_CHAR(2,12,'|');

  LCD1602_DIS_CHAR(1,13,'*');

  LCD1602_DIS_CHAR(2,14,'v');

  LCD1602_DIS_CHAR(1,15,'*'); 

}