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/******************** (C) COPYRIGHT 2007 PROPOX ********************************
* File Name : lcd_lib_91x.c
* Author : PROPOX Team
* Date First Issued : 09/24/2007 : Version 1.0
* Description : This file provides all the 2x16 LCD functions.
********************************************************************************
* History:
********************************************************************************
* THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
* AS A RESULT, PROPOX SHALL NOT BE HELD LIABLE FOR ANY DIRECT, INDIRECT OR
* CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
* CONTENT OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*******************************************************************************/
/* Includes ------------------------------------------------------------------*/
#include "91x_lib.h"
#include "91x_gpio.h"
#include "91x_map.h"
#include "91x_scu.h"
#include "lcd_lib_91x.h"
/*******************************************************************************
* Function Name : delay
* Description : Delay (opoznienie)
*
* Input : time - number of cycles
* Output : None
* Return : None
*******************************************************************************/
void delay(int time)
{
while(time--)
asm volatile ("nop");
}
/*******************************************************************************
* Function Name : LCDinit
* Description : Inicialize LCD (Inicjalizacja LCD)
* (4 bit data, 2 lines, characters 5x7, blinking cursor on)
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void LCDinit(void)
{
GPIO_Write(GPIO8, 0x00);
delay(375000); //15ms
//--------- Write 0x03 -----------
D7_reset;
D6_reset;
D5_set;
D4_set;
E_set;
delay(25000); //1ms
E_reset;
delay(125000); //5ms
//--------- Write 0x03 -----------
D7_reset;
D6_reset;
D5_set;
D4_set;
E_set;
delay(25000); //1ms
E_reset;
delay(25000); //1ms
//--------- Write 0x03 -----------
D7_reset;
D6_reset;
D5_set;
D4_set;
E_set;
delay(25000); //1ms
E_reset;
delay(25000); //1ms
//--------- Enable Four Bit Mode ----------
D7_reset;
D6_reset;
D5_set;
D4_reset;
E_set;
delay(25000); //1ms
E_reset;
delay(25000); //1ms
//---------- Set Interface Length ----------
//Write 0x2 - 4 bits
D7_reset;
D6_reset;
D5_set;
D4_reset;
E_set;
delay(25000); //1ms
E_reset;
delay(25000); //1ms
//Write 0x8 - 2 lines, 5x7
D7_set;
D6_reset;
D5_reset;
D4_reset;
E_set;
delay(25000); //1ms
E_reset;
delay(25000); //1ms
//---------- Turn off the Display ----------
//Write 0x0
D7_reset;
D6_reset;
D5_reset;
D4_reset;
E_set;
delay(25000); //1ms
E_reset;
delay(25000); //1ms
//Write 0x8
D7_set;
D6_reset;
D5_reset;
D4_reset;
E_set;
delay(25000); //1ms
E_reset;
delay(25000); //1ms
//------------ Clear the Display -----------
//Write 0x0
D7_reset;
D6_reset;
D5_reset;
D4_reset;
E_set;
delay(25000); //1ms
E_reset;
delay(25000); //1ms
//Write 0x1
D7_reset;
D6_reset;
D5_reset;
D4_set;
E_set;
delay(25000); //1ms
E_reset;
delay(25000); //1ms
//-------- Set Cursor Move Direction --------
//Write 0x0
D7_reset;
D6_reset;
D5_reset;
D4_reset;
E_set;
delay(25000); //1ms
E_reset;
delay(25000); //1ms
//Write 0x6 - Increment the Cursor
D7_reset;
D6_set;
D5_set;
D4_reset;
E_set;
delay(25000); //1ms
E_reset;
delay(25000); //1ms
//---------- Enable Display/Cursor ----------
//Write 0x0
D7_reset;
D6_reset;
D5_reset;
D4_reset;
E_set;
delay(25000); //1ms
E_reset;
delay(25000); //1ms
//Write 0xF - Display on, cursor on, blink on
D7_set;
D6_set;
D5_set;
D4_set;
E_set;
delay(25000); //1ms
E_reset;
delay(25000); //1ms
}
/*******************************************************************************
* Function Name : LCDsendChar
* Description : Send Char to LCD (Wyslanie znaku na LCD)
*
* Input : ch - is a ascii code of character or char from char_code.h
* Output : None
* Return : None
*******************************************************************************/
void LCDsendChar(u8 ch)
{
//4 MSB bits
//4 starsze bity
GPIO_Write(GPIO8, (ch>>4) & 0x0f);
RS_set;
E_set;
delay(25000);
E_reset;
delay(25000);
//4 LSB bits
//4 mlodsze bity
GPIO_Write(GPIO8, ch & 0x0f);
RS_set;
E_set;
delay(25000);
E_reset;
delay(25000);
}
/*******************************************************************************
* Function Name : LCDsendCommand
* Description : Send Command to LCD (Wyslanie rozkazu do LCD)
*
* Input : cmd - is a ascii code of command
* Output : None
* Return : None
*******************************************************************************/
void LCDsendCommand(u8 cmd)
{
//4 MSB bits
//4 starsze bity
GPIO_Write(GPIO8, (cmd>>4) & 0x0f);
RS_reset;
E_set;
delay(25000);
E_reset;
delay(25000);
//4 LSB bits
//4 mlodsze bity
GPIO_Write(GPIO8, cmd & 0x0f);
RS_reset;
E_set;
delay(25000);
E_reset;
delay(25000);
}
/*******************************************************************************
* Function Name : LCDclr
* Description : Clear LCD (Czyszczenie LCD)
*
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void LCDclr(void)
{
LCDsendCommand(0x01);
}
/*******************************************************************************
* Function Name : LCDhome
* Description : LCD cursor home (Przesuniecie kursora na pozycje poczatkowa)
*
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void LCDhome(void)
{
LCDsendCommand(0x02);
}
/*******************************************************************************
* Function Name : LCDstring
* Description : Outputs string to LCD (Wyswietl ciag znakow na LCD)
*
* Input : data - pointer to start of table, nBytes - nuber of bytes to send
* Output : None
* Return : None
*******************************************************************************/
void LCDstring(u8* data, u8 nBytes)
{
u8 count;
//check to make sure we have a good pointer
//sprawdzenie zgodnosci wskaznika
if (!data) return;
//print data
//wyswietl znaki
for(count=0; count<nBytes; count++)
{
LCDsendChar(data[count]);
}
}
/*******************************************************************************
* Function Name : LCDGotoXY
* Description : Cursor to X Y position (Kursor na pozycje XY)
*
* Input : row - x position, column - y position
* Output : None
* Return : None
*******************************************************************************/
void LCDGotoXY(u8 row, u8 column)
{
#define LCD_DDRAM 7
#define LCD_LINE0_DDRAMADDR 0x00
#define LCD_LINE1_DDRAMADDR 0x40
#define LCD_LINE2_DDRAMADDR 0x14
#define LCD_LINE3_DDRAMADDR 0x54
u8 DDRAMAddr;
//remap lines into proper order
//wyznaczenie adresu polozenia
switch(column)
{
case 0: DDRAMAddr = LCD_LINE0_DDRAMADDR + row; break;
case 1: DDRAMAddr = LCD_LINE1_DDRAMADDR + row; break;
case 2: DDRAMAddr = LCD_LINE2_DDRAMADDR + row; break;
case 3: DDRAMAddr = LCD_LINE3_DDRAMADDR + row; break;
default: DDRAMAddr = LCD_LINE0_DDRAMADDR + row;
}
//set data address
//wyslanie adresu
LCDsendCommand(1<<LCD_DDRAM | DDRAMAddr);
}
/*******************************************************************************
* Function Name : LCDshiftLeft
* Description : Scrol n of characters Right (Przsuniecie znakow o n w prawo)
*
* Input : right - number of characters
* Output : None
* Return : None
*******************************************************************************/
void LCDshiftLeft(u8 right)
{
u8 count;
for (count=0;count<right;count++)
{
LCDsendCommand(0x1E);
}
}
/*******************************************************************************
* Function Name : LCDshiftRight
* Description : Scrol n of characters Left (Przsuniecie znakow o n w lewo)
*
* Input : left - number of characters
* Output : None
* Return : None
*******************************************************************************/
void LCDshiftRight(u8 left)
{
u8 count;
for (count=0;count<left;count++)
{
LCDsendCommand(0x18);
}
}
/*******************************************************************************
* Function Name : LCDcursorOn
* Description : Displays LCD cursor (Kursor aktywny)
*
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void LCDcursorOn(void)
{
LCDsendCommand(0x0E);
}
/*******************************************************************************
* Function Name : LCDcursorOnBlink
* Description : Displays LCD blinking cursor (Migajacy kursor aktywny)
*
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void LCDcursorOnBlink(void)
{
LCDsendCommand(0x0F);
}
/*******************************************************************************
* Function Name : LCDcursorOFF
* Description : Turns OFF cursor (Kursor wylaczony)
*
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void LCDcursorOFF(void)
{
LCDsendCommand(0x0C);
}
/*******************************************************************************
* Function Name : LCDblank
* Description : Blanks LCD (LCD nieaktywny)
*
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void LCDblank(void)
{
LCDsendCommand(0x08);
}
/*******************************************************************************
* Function Name : LCDvisible
* Description : Shows LCD (LCD aktywny)
*
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void LCDvisible(void)
{
LCDsendCommand(0x0C);
}
/*******************************************************************************
* Function Name : LCDcursorLeft
* Description : Moves cursor by n poisitions left (Kursor n pozycji w lewo)
*
* Input : left - number of positions
* Output : None
* Return : None
*******************************************************************************/
void LCDcursorLeft(u8 left)
{
u8 count;
for (count=0;count<left;count++)
{
LCDsendCommand(0x10);
}
}
/*******************************************************************************
* Function Name : LCDcursorRight
* Description : Moves cursor by n poisitions right (Kursor n pozycji w prawo)
*
* Input : right - number of positions
* Output : None
* Return : None
*******************************************************************************/
void LCDcursorRight(u8 right)
{
u8 count;
for (count=0;count<right;count++)
{
LCDsendCommand(0x14);
}
}
/******************* (C) COPYRIGHT 2007 PROPOX *****END OF FILE****/
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