void LCDCursorRight(uint8_t n) //Moves cursor by n poisitions left
{
for (uint8_t i=0;i<n;i++)
{
LCDSendCommand(0x14);
}
}
void LCDShiftRight(uint8_t n) //Scroll n of characters Left
{
for (uint8_t i=0;i<n;i++)
{
LCDSendCommand(0x18);
}
}
void LCDSetXY(BYTE add1, BYTE X,BYTE Y)
{
BYTE temp[3];
temp[0]= cmdLCD_DEFAULT_PAGE;
temp[1]= cmdLCD_SET_Y | Y;
temp[2]= cmdLCD_SET_X | X;
LCDSendCommand(add1,temp,3);
}
void LCDdefinechar(uint8_t *pc,uint8_t char_code){
uint8_t a, pcc;
uint16_t i;
a=(char_code<<3)|0x40;
for (i=0; i<8; i++)
{
pcc=lcdpgm_read_byte(&pc[i]);
LCDSendCommand(a++);
LCDSendData(pcc);
}
}
void LCDGotoXY(unsigned char x, unsigned char y) //Cursor to X Y position
{
unsigned char DDRAMAddr;
switch(y)
{
case 0: DDRAMAddr = LCD_LINE0_DDRAMADDR+x; break;
case 1: DDRAMAddr = LCD_LINE1_DDRAMADDR+x; break;
case 2: DDRAMAddr = LCD_LINE2_DDRAMADDR+x; break;
case 3: DDRAMAddr = LCD_LINE3_DDRAMADDR+x; break;
default: DDRAMAddr = LCD_LINE0_DDRAMADDR+x;
}
LCDSendCommand(1<<LCD_DDRAM | DDRAMAddr);
}
void LCDInit(void)
{
E_Low();
LCDDirIn();
_delay_ms(40);
LCDDirOut();
LCDDataLines(0x30>>4);
LCD_RS_DIR|=(1<<LCD_RS_BIT);
LCD_RW_DIR|=(1<<LCD_RW_BIT);
RS_Low();
RW_Low();
LCD_E_DIR|=(1<<LCD_E_BIT);
_delay_us(20);
E_High();
_delay_us(20);
E_Low();
_delay_ms(20);
E_High();
_delay_us(20);
E_Low();
_delay_us(100);
E_High();
_delay_us(20);
E_Low();
_delay_us(100);
LCDDataLines(0x20>>4);
_delay_us(20);
E_High();
_delay_us(20);
E_Low();
_delay_us(100);
LCDSendCommand(0x28);
LCDSendCommand(0x08);
LCDSendCommand(0x01);
LCDSendCommand(0x06);
LCDSendCommand(0x0C);
}
void pcfLCDInit(BYTE addr)
{
#ifndef _WINDOWS
WORD i;
BYTE sync_mode=0;
BYTE slew=0;
// Set lcd reset pin as output
// Set lcd reset pin low
LCD_RESET_TRIS = 0;
LCD_RESET = 0;
DelayMs(500); // tW(RESL)
LCD_RESET = 1;
DelayMs(500); // tW(RESH)
LCD_RESET = 0;
DelayMs(1); // tW(RESL)
LCD_RESET = 1;
DelayMs(3); // tR(OP)
//***************************************************
//* Lcd init commands *
//***************************************************
for(i=0;i<20;i++)
I2C_Recv[i]=0;
addr=PCF8535_BUS_ADDRESS; //address of the device (slave) under communication
CloseI2C(); //close i2c if was operating earlier
//---INITIALISE THE I2C MODULE FOR MASTER MODE WITH 100KHz ---
sync_mode = MASTER;
slew = SLEW_OFF;
OpenI2C(sync_mode,slew);
SSPADD=0x0A; //400kHz Baud clock(9) @8MHz
//check for bus idle condition in multi master communication
IdleI2C();
//---START I2C---
//StartI2C();
LCDSendCommand(addr,(BYTE*)INIT_SEQUENCE,sizeof(INIT_SEQUENCE));
#else
UNUSED(addr); // заглушка
#endif
}
void LCDVisible(void) //Shows LCD
{
LCDSendCommand(0x0C);
}
void LCDBlank(void) //blanks LCD
{
LCDSendCommand(0x08);
}
void LCDClr(void) //Clears LCD
{
LCDSendCommand(LCD_CLR);
}
void LCDCursorOnBlink(void) //displays LCD blinking cursor
{
LCDSendCommand(0x0F);
}
void LCDCursorOn(void) //displays LCD cursor
{
LCDSendCommand(0x0E);
}
void LCDHome(void) //LCD cursor home
{
LCDSendCommand(LCD_HOME);
}
void SmartUp(void)
{
int Temp;
for(Temp=0; Temp<1; Temp++) LCDSendCommand(CUR_UP);
}
void LCDCursorOFF(void) //turns OFF cursor
{
LCDSendCommand(0x0C);
}
void SmartDown(void)
{
int Temp;
for(Temp=0; Temp<40; Temp++) LCDSendCommand(CUR_DOWN);
}
int main()
{
Port_Init();
LCD_Init();
LCDSendCommand(DISP_OFF);
while (1)
{
//Value of Bl prevents holding the buttons
//Bl = 0: One of the Buttons is pressed, release to press again
//LCD_State value is the state of LCD: 1 - LCD is ON; 0 - LCD is OFF
//Up Button (Button 1) : Turn ON Display
if (!(PINA & 0b00000001) & Bl & !(LCD_State)) //check state of button 1 and value of Bl and LCD_State
{
LCDSendCommand(DISP_ON); //Turn ON Display
LCDSendCommand(CLR_DISP); //Clear Display
LCDSendTxt(" Welcome "); //Print welcome screen
Bl = 0; //Button is pressed
LCD_State = 1; //Display is ON (LCD_State = 1)
}
//Left Button (Button 2) : Set Text1
if (!(PINA & 0b00000010) & Bl & LCD_State) //check state of button 2 and value of Bl and LCD_State
{
LCDSendCommand(CLR_DISP); //Clear Display
LCDSendCommand(DD_RAM_ADDR); //set to Line 1
for (i=0; i<16; i++) Text[i] = 0; //Clear Text
strcpy(Text, Text1); //set Text
for (i=0; i<16; i++)
if (Text[i] == 0) Text[i] = ' ';//fill the Text with space
//LCDSendTxt(Text); //Print the text
for (i=0; i<16; i++) LCDSendChar(Text[i]);
Bl = 0; //Button is pressed
Line = 1; //text must be print on up line
}
//Middle Button (Button 3) : Slide the text
if (!(PINA & 0b00000100) & Bl & LCD_State)
{
while (!(PINA & 0b00000100) & (Line != 0))
//check state of button 3 and value of Line (Line = 0 - no text selected)
{
//sliding the text
for(i=60000; i; i--);
Ch = Text[0];
for (i=0; i<15; i++) Text[i] = Text[i+1];
Text[15] = Ch;
//print the text in the correct line
if (Line == 1)
LCDSendCommand(DD_RAM_ADDR);
else
LCDSendCommand(DD_RAM_ADDR2);
//LCDSendTxt(Text);
for (i=0; i<16; i++) LCDSendChar(Text[i]);
}
}
//Right Button (Button 4) Set Text2
if (!(PINA & 0b00001000) & Bl & LCD_State) //check state of button 4 and value of Bl and LCD_State
{
LCDSendCommand(CLR_DISP); //Clear Display
LCDSendCommand(DD_RAM_ADDR2); //set to Line 2
for (i=0; i<16; i++) Text[i] = 0; //Clear Text
strcpy(Text, Text2); //set Text
for (i=0; i<16; i++)
if (Text[i] == 0) Text[i] = ' ';//fill the Text with space
//LCDSendTxt(Text); //Print the text
for (i=0; i<16; i++) LCDSendChar(Text[i]);
Bl = 0; //Button is pressed
Line = 2; //text must be print on down line
}
//Down Button (Button 5) Turn OFF Display
if (!(PINA & 0b00010000) & Bl & LCD_State) //check state of button 5 and value of Bl and LCD_State
{
LCDSendCommand(CLR_DISP); //Clear Display
LCDSendTxt(" Turn OFF "); //Print Turn OFF message
for (i=30; i; i--)
for (j=30000; j; j--); //simple delay
Bl = 0; //Button is pressed
LCDSendCommand(DISP_OFF); //Display is OFF ==> LCD_State = 0, Line = 0
LCD_State = 0;
Line = 0;
}
//check state of all buttons
if (
((PINA & 0b00000001)
|(PINA & 0b00000010)
|(PINA & 0b00000100)
|(PINA & 0b00001000)
|(PINA & 0b00010000)) == 31)
Bl = 1; //if all buttons are released Bl gets value 1
}
return 0;
}
