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stlink/example/32l_lcd/stm32l_discovery_lcd.c

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/**
******************************************************************************
* @file stm32l_discovery_lcd.c
* @author Microcontroller Division
* @version V1.0.0
* @date Apri-2011
* @brief This file includes driver for the glass LCD Module mounted on
* STM32l discovery board MB963
******************************************************************************
* @copy
*
* THE PRESENT FIRMWARE 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, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*
* <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32l_discovery_lcd.h"
#include "discover_board.h"
#include "stm32l1xx_lcd.h"
#include "stm32l1xx_gpio.h"
#include "stm32l1xx_rcc.h"
/* #include "main.h" */
/* this variable can be used for accelerate the scrolling exit when push user button */
volatile bool KeyPressed = FALSE;
/* LCD BAR status: We don't write directly in LCD RAM for save the bar setting */
uint8_t t_bar[2]={0x0,0X0};
/* =========================================================================
LCD MAPPING
=========================================================================
A
_ ----------
COL |_| |\ |J /|
F| H | K |B
_ | \ | / |
COL |_| --G-- --M--
| /| \ |
E| Q | N |C
_ | / |P \|
DP |_| -----------
D
An LCD character coding is based on the following matrix:
{ E , D , P , N }
{ M , C , COL , DP}
{ B , A , K , J }
{ G , F , Q , H }
The character 'A' for example is:
-------------------------------
LSB { 1 , 0 , 0 , 0 }
{ 1 , 1 , 0 , 0 }
{ 1 , 1 , 0 , 0 }
MSB { 1 , 1 , 0 , 0 }
-------------------
'A' = F E 0 0 hexa
*/
/* Constant table for cap characters 'A' --> 'Z' */
const uint16_t CapLetterMap[26]=
{
/* A B C D E F G H I */
0xFE00,0x6714,0x1d00,0x4714,0x9d00,0x9c00,0x3f00,0xfa00,0x0014,
/* J K L M N O P Q R */
0x5300,0x9841,0x1900,0x5a48,0x5a09,0x5f00,0xFC00,0x5F01,0xFC01,
/* S T U V W X Y Z */
0xAF00,0x0414,0x5b00,0x18c0,0x5a81,0x00c9,0x0058,0x05c0
};
/* Constant table for number '0' --> '9' */
const uint16_t NumberMap[10]=
{
/* 0 1 2 3 4 5 6 7 8 9 */
0x5F00,0x4200,0xF500,0x6700,0xEa00,0xAF00,0xBF00,0x04600,0xFF00,0xEF00
};
static void LCD_Conv_Char_Seg(uint8_t* c,bool point,bool column,uint8_t* digit);
/**
* @brief Configures the LCD GLASS relative GPIO port IOs and LCD peripheral.
* @param None
* @retval None
*/
void LCD_GLASS_Init(void)
{
LCD_InitTypeDef LCD_InitStruct;
LCD_InitStruct.LCD_Prescaler = LCD_Prescaler_1;
LCD_InitStruct.LCD_Divider = LCD_Divider_31;
LCD_InitStruct.LCD_Duty = LCD_Duty_1_4;
LCD_InitStruct.LCD_Bias = LCD_Bias_1_3;
LCD_InitStruct.LCD_VoltageSource = LCD_VoltageSource_Internal;
/* Initialize the LCD */
LCD_Init(&LCD_InitStruct);
LCD_MuxSegmentCmd(ENABLE);
/* To set contrast to mean value */
LCD_ContrastConfig(LCD_Contrast_Level_4);
LCD_DeadTimeConfig(LCD_DeadTime_0);
LCD_PulseOnDurationConfig(LCD_PulseOnDuration_4);
/* Wait Until the LCD FCR register is synchronized */
LCD_WaitForSynchro();
/* Enable LCD peripheral */
LCD_Cmd(ENABLE);
/* Wait Until the LCD is enabled */
while(LCD_GetFlagStatus(LCD_FLAG_ENS) == RESET)
{
}
/*!< Wait Until the LCD Booster is ready */
while(LCD_GetFlagStatus(LCD_FLAG_RDY) == RESET)
{
}
LCD_BlinkConfig(LCD_BlinkMode_Off,LCD_BlinkFrequency_Div32);
LCD_GLASS_Clear();
}
/**
* @brief To initialize the LCD pins
* @caller main
* @param None
* @retval None
*/
void LCD_GLASS_Configure_GPIO(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable GPIOs clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA | RCC_AHBPeriph_GPIOB | RCC_AHBPeriph_GPIOC |
RCC_AHBPeriph_GPIOD | RCC_AHBPeriph_GPIOE | RCC_AHBPeriph_GPIOH, ENABLE);
/* Configure Output for LCD */
/* Port A */
GPIO_StructInit(&GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_8 | GPIO_Pin_9 |GPIO_Pin_10 |GPIO_Pin_15;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_Init( GPIOA, &GPIO_InitStructure);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource1,GPIO_AF_LCD) ;
GPIO_PinAFConfig(GPIOA, GPIO_PinSource2,GPIO_AF_LCD) ;
GPIO_PinAFConfig(GPIOA, GPIO_PinSource3,GPIO_AF_LCD) ;
GPIO_PinAFConfig(GPIOA, GPIO_PinSource8,GPIO_AF_LCD) ;
GPIO_PinAFConfig(GPIOA, GPIO_PinSource9,GPIO_AF_LCD) ;
GPIO_PinAFConfig(GPIOA, GPIO_PinSource10,GPIO_AF_LCD) ;
GPIO_PinAFConfig(GPIOA, GPIO_PinSource15,GPIO_AF_LCD) ;
/* Configure Output for LCD */
/* Port B */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_8 | GPIO_Pin_9 \
| GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_Init( GPIOB, &GPIO_InitStructure);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource3,GPIO_AF_LCD) ;
GPIO_PinAFConfig(GPIOB, GPIO_PinSource4,GPIO_AF_LCD) ;
GPIO_PinAFConfig(GPIOB, GPIO_PinSource5,GPIO_AF_LCD) ;
GPIO_PinAFConfig(GPIOB, GPIO_PinSource8,GPIO_AF_LCD) ;
GPIO_PinAFConfig(GPIOB, GPIO_PinSource9,GPIO_AF_LCD) ;
GPIO_PinAFConfig(GPIOB, GPIO_PinSource10,GPIO_AF_LCD) ;
GPIO_PinAFConfig(GPIOB, GPIO_PinSource11,GPIO_AF_LCD) ;
GPIO_PinAFConfig(GPIOB, GPIO_PinSource12,GPIO_AF_LCD) ;
GPIO_PinAFConfig(GPIOB, GPIO_PinSource13,GPIO_AF_LCD) ;
GPIO_PinAFConfig(GPIOB, GPIO_PinSource14,GPIO_AF_LCD) ;
GPIO_PinAFConfig(GPIOB, GPIO_PinSource15,GPIO_AF_LCD) ;
/* Configure Output for LCD */
/* Port C*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_6 \
| GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 |GPIO_Pin_11 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_Init( GPIOC, &GPIO_InitStructure);
GPIO_PinAFConfig(GPIOC, GPIO_PinSource0,GPIO_AF_LCD) ;
GPIO_PinAFConfig(GPIOC, GPIO_PinSource1,GPIO_AF_LCD) ;
GPIO_PinAFConfig(GPIOC, GPIO_PinSource2,GPIO_AF_LCD) ;
GPIO_PinAFConfig(GPIOC, GPIO_PinSource3,GPIO_AF_LCD) ;
GPIO_PinAFConfig(GPIOC, GPIO_PinSource6,GPIO_AF_LCD) ;
GPIO_PinAFConfig(GPIOC, GPIO_PinSource7,GPIO_AF_LCD) ;
GPIO_PinAFConfig(GPIOC, GPIO_PinSource8,GPIO_AF_LCD) ;
GPIO_PinAFConfig(GPIOC, GPIO_PinSource9,GPIO_AF_LCD) ;
GPIO_PinAFConfig(GPIOC, GPIO_PinSource10,GPIO_AF_LCD) ;
GPIO_PinAFConfig(GPIOC, GPIO_PinSource11,GPIO_AF_LCD) ;
/* Disable GPIOs clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA | RCC_AHBPeriph_GPIOB | RCC_AHBPeriph_GPIOC |
RCC_AHBPeriph_GPIOD | RCC_AHBPeriph_GPIOE | RCC_AHBPeriph_GPIOH, DISABLE);
}
/**
* @brief LCD contrast setting min-->max-->min by pressing user button
* @param None
* @retval None
*/
static void Delay(uint32_t nTime)
{
while((nTime--) != 0);
}
void LCD_contrast()
{
uint32_t contrast ;
/* To get the actual contrast value in register */
contrast = LCD->FCR & LCD_Contrast_Level_7;
while ((GPIOC->IDR & USERBUTTON_GPIO_PIN) == 0x0)
{
contrast += LCD_Contrast_Level_1;
if (contrast > LCD_Contrast_Level_7)
contrast=LCD_Contrast_Level_0;
LCD_ContrastConfig(contrast);
Delay(100);
}
}
/**
* @brief Setting bar on LCD, writes bar value in LCD frame buffer
* @param None
* @retval None
*/
void LCD_bar()
{
LCD->RAM[LCD_RAMRegister_4] &= 0xffff5fff;
LCD->RAM[LCD_RAMRegister_6] &= 0xffff5fff;
/* bar1 bar3 */
LCD->RAM[LCD_RAMRegister_4] |= (uint32_t)(t_bar[0]<<12);
/*bar0 bar2 */
LCD->RAM[LCD_RAMRegister_6] |= (uint32_t)(t_bar[1]<<12);
}
/**
* @brief Converts an ascii char to the a LCD digit.
* @param c: a char to display.
* @param point: a point to add in front of char
* This parameter can be: POINT_OFF or POINT_ON
* @param column : flag indicating if a column has to be add in front
* of displayed character.
* This parameter can be: COLUMN_OFF or COLUMN_ON.
* @param digit array with segment
* @retval None
*/
static void LCD_Conv_Char_Seg(uint8_t* c,bool point,bool column, uint8_t* digit)
{
uint16_t ch = 0 ;
uint8_t i,j;
switch (*c)
{
case ' ' :
ch = 0x00;
break;
case '*':
ch = star;
break;
case 'µ' :
ch = C_UMAP;
break;
case 'm' :
ch = C_mMap;
break;
case 'n' :
ch = C_nMap;
break;
case '-' :
ch = C_minus;
break;
case '/' :
ch = C_slatch;
break;
case '°' :
ch = C_percent_1;
break;
case '%' :
ch = C_percent_2;
break;
case 255 :
ch = C_full;
break ;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
ch = NumberMap[*c-0x30];
break;
default:
/* The character c is one letter in upper case*/
if ( (*c < 0x5b) && (*c > 0x40) )
{
ch = CapLetterMap[*c-'A'];
}
/* The character c is one letter in lower case*/
if ( (*c <0x7b) && ( *c> 0x60) )
{
ch = CapLetterMap[*c-'a'];
}
break;
}
/* Set the digital point can be displayed if the point is on */
if (point)
{
ch |= 0x0002;
}
/* Set the "COL" segment in the character that can be displayed if the column is on */
if (column)
{
ch |= 0x0020;
}
for (i = 12,j=0 ;j<4; i-=4,j++)
{
digit[j] = (ch >> i) & 0x0f; //To isolate the less signifiant dibit
}
}
/**
* @brief This function writes a char in the LCD frame buffer.
* @param ch: the character to display.
* @param point: a point to add in front of char
* This parameter can be: POINT_OFF or POINT_ON
* @param column: flag indicating if a column has to be add in front
* of displayed character.
* This parameter can be: COLUMN_OFF or COLUMN_ON.
* @param position: position in the LCD of the caracter to write [0:7]
* @retval None
* @par Required preconditions: The LCD should be cleared before to start the
* write operation.
*/
void LCD_GLASS_WriteChar(uint8_t* ch, bool point, bool column, uint8_t position)
{
uint8_t digit[4]; /* Digit frame buffer */
/* To convert displayed character in segment in array digit */
LCD_Conv_Char_Seg(ch,point,column,digit);
/* TO wait LCD Ready */
while( LCD_GetFlagStatus (LCD_FLAG_UDR) != RESET) ;
switch (position)
{
/* Position 1 on LCD (Digit1)*/
case 1:
LCD->RAM[LCD_RAMRegister_0] &= 0xcffffffc;
LCD->RAM[LCD_RAMRegister_2] &= 0xcffffffc;
LCD->RAM[LCD_RAMRegister_4] &= 0xcffffffc;
LCD->RAM[LCD_RAMRegister_6] &= 0xcffffffc;
LCD->RAM[LCD_RAMRegister_0] |= ((digit[0]& 0x0c) << 26 ) | (digit[0]& 0x03) ; // 1G 1B 1M 1E
LCD->RAM[LCD_RAMRegister_2] |= ((digit[1]& 0x0c) << 26 ) | (digit[1]& 0x03) ; // 1F 1A 1C 1D
LCD->RAM[LCD_RAMRegister_4] |= ((digit[2]& 0x0c) << 26 ) | (digit[2]& 0x03) ; // 1Q 1K 1Col 1P
LCD->RAM[LCD_RAMRegister_6] |= ((digit[3]& 0x0c) << 26 ) | (digit[3]& 0x03) ; // 1H 1J 1DP 1N
break;
/* Position 2 on LCD (Digit2)*/
case 2:
LCD->RAM[LCD_RAMRegister_0] &= 0xf3ffff03;
LCD->RAM[LCD_RAMRegister_2] &= 0xf3ffff03;
LCD->RAM[LCD_RAMRegister_4] &= 0xf3ffff03;
LCD->RAM[LCD_RAMRegister_6] &= 0xf3ffff03;
LCD->RAM[LCD_RAMRegister_0] |= ((digit[0]& 0x0c) << 24 )|((digit[0]& 0x02) << 6 )|((digit[0]& 0x01) << 2 ) ; // 2G 2B 2M 2E
LCD->RAM[LCD_RAMRegister_2] |= ((digit[1]& 0x0c) << 24 )|((digit[1]& 0x02) << 6 )|((digit[1]& 0x01) << 2 ) ; // 2F 2A 2C 2D
LCD->RAM[LCD_RAMRegister_4] |= ((digit[2]& 0x0c) << 24 )|((digit[2]& 0x02) << 6 )|((digit[2]& 0x01) << 2 ) ; // 2Q 2K 2Col 2P
LCD->RAM[LCD_RAMRegister_6] |= ((digit[3]& 0x0c) << 24 )|((digit[3]& 0x02) << 6 )|((digit[3]& 0x01) << 2 ) ; // 2H 2J 2DP 2N
break;
/* Position 3 on LCD (Digit3)*/
case 3:
LCD->RAM[LCD_RAMRegister_0] &= 0xfcfffcff;
LCD->RAM[LCD_RAMRegister_2] &= 0xfcfffcff;
LCD->RAM[LCD_RAMRegister_4] &= 0xfcfffcff;
LCD->RAM[LCD_RAMRegister_6] &= 0xfcfffcff;
LCD->RAM[LCD_RAMRegister_0] |= ((digit[0]& 0x0c) << 22 ) | ((digit[0]& 0x03) << 8 ) ; // 3G 3B 3M 3E
LCD->RAM[LCD_RAMRegister_2] |= ((digit[1]& 0x0c) << 22 ) | ((digit[1]& 0x03) << 8 ) ; // 3F 3A 3C 3D
LCD->RAM[LCD_RAMRegister_4] |= ((digit[2]& 0x0c) << 22 ) | ((digit[2]& 0x03) << 8 ) ; // 3Q 3K 3Col 3P
LCD->RAM[LCD_RAMRegister_6] |= ((digit[3]& 0x0c) << 22 ) | ((digit[3]& 0x03) << 8 ) ; // 3H 3J 3DP 3N
break;
/* Position 4 on LCD (Digit4)*/
case 4:
LCD->RAM[LCD_RAMRegister_0] &= 0xffcff3ff;
LCD->RAM[LCD_RAMRegister_2] &= 0xffcff3ff;
LCD->RAM[LCD_RAMRegister_4] &= 0xffcff3ff;
LCD->RAM[LCD_RAMRegister_6] &= 0xffcff3ff;
LCD->RAM[LCD_RAMRegister_0] |= ((digit[0]& 0x0c) << 18 ) | ((digit[0]& 0x03) << 10 ) ; // 4G 4B 4M 4E
LCD->RAM[LCD_RAMRegister_2] |= ((digit[1]& 0x0c) << 18 ) | ((digit[1]& 0x03) << 10 ) ; // 4F 4A 4C 4D
LCD->RAM[LCD_RAMRegister_4] |= ((digit[2]& 0x0c) << 18 ) | ((digit[2]& 0x03) << 10 ) ; // 4Q 4K 4Col 4P
LCD->RAM[LCD_RAMRegister_6] |= ((digit[3]& 0x0c) << 18 ) | ((digit[3]& 0x03) << 10 ) ; // 4H 4J 4DP 4N
break;
/* Position 5 on LCD (Digit5)*/
case 5:
LCD->RAM[LCD_RAMRegister_0] &= 0xfff3cfff;
LCD->RAM[LCD_RAMRegister_2] &= 0xfff3cfff;
LCD->RAM[LCD_RAMRegister_4] &= 0xfff3efff;
LCD->RAM[LCD_RAMRegister_6] &= 0xfff3efff;
LCD->RAM[LCD_RAMRegister_0] |= ((digit[0]& 0x0c) << 16 ) | ((digit[0]& 0x03) << 12 ) ; // 5G 5B 5M 5E
LCD->RAM[LCD_RAMRegister_2] |= ((digit[1]& 0x0c) << 16 ) | ((digit[1]& 0x03) << 12 ) ; // 5F 5A 5C 5D
LCD->RAM[LCD_RAMRegister_4] |= ((digit[2]& 0x0c) << 16 ) | ((digit[2]& 0x01) << 12 ) ; // 5Q 5K 5P
LCD->RAM[LCD_RAMRegister_6] |= ((digit[3]& 0x0c) << 16 ) | ((digit[3]& 0x01) << 12 ) ; // 5H 5J 5N
break;
/* Position 6 on LCD (Digit6)*/
case 6:
LCD->RAM[LCD_RAMRegister_0] &= 0xfffc3fff;
LCD->RAM[LCD_RAMRegister_2] &= 0xfffc3fff;
LCD->RAM[LCD_RAMRegister_4] &= 0xfffc3fff;
LCD->RAM[LCD_RAMRegister_6] &= 0xfffc3fff;
LCD->RAM[LCD_RAMRegister_0] |= ((digit[0]& 0x04) << 15 ) | ((digit[0]& 0x08) << 13 ) | ((digit[0]& 0x03) << 14 ) ; // 6B 6G 6M 6E
LCD->RAM[LCD_RAMRegister_2] |= ((digit[1]& 0x04) << 15 ) | ((digit[1]& 0x08) << 13 ) | ((digit[1]& 0x03) << 14 ) ; // 6A 6F 6C 6D
LCD->RAM[LCD_RAMRegister_4] |= ((digit[2]& 0x04) << 15 ) | ((digit[2]& 0x08) << 13 ) | ((digit[2]& 0x01) << 14 ) ; // 6K 6Q 6P
LCD->RAM[LCD_RAMRegister_6] |= ((digit[3]& 0x04) << 15 ) | ((digit[3]& 0x08) << 13 ) | ((digit[3]& 0x01) << 14 ) ; // 6J 6H 6N
break;
default:
break;
}
/* Refresh LCD bar */
LCD_bar();
/* Update the LCD display */
LCD_UpdateDisplayRequest();
}
/**
* @brief This function writes a char in the LCD RAM.
* @param ptr: Pointer to string to display on the LCD Glass.
* @retval None
*/
void LCD_GLASS_DisplayString(uint8_t* ptr)
{
uint8_t i = 0x01;
/* Send the string character by character on lCD */
while ((*ptr != 0) & (i < 8))
{
/* Display one character on LCD */
LCD_GLASS_WriteChar(ptr, FALSE, FALSE, i);
/* Point on the next character */
ptr++;
/* Increment the character counter */
i++;
}
}
/**
* @brief This function writes a char in the LCD RAM.
* @param ptr: Pointer to string to display on the LCD Glass.
* @retval None
* @par Required preconditions: Char is ASCCI value "Ored" with decimal point or Column flag
*/
void LCD_GLASS_DisplayStrDeci(uint16_t* ptr)
{
uint8_t i = 0x01;
uint8_t char_tmp;
// LCD_GLASS_Clear();
/* Send the string character by character on lCD */
while ((*ptr != 0) & (i < 8))
{
char_tmp = (*ptr) & 0x00ff;
switch ((*ptr) & 0xf000)
{
case DOT:
/* Display one character on LCD with decimal point */
LCD_GLASS_WriteChar(&char_tmp, POINT_ON, COLUMN_OFF, i);
break;
case DOUBLE_DOT:
/* Display one character on LCD with decimal point */
LCD_GLASS_WriteChar(&char_tmp, POINT_OFF, COLUMN_ON, i);
break;
default:
LCD_GLASS_WriteChar(&char_tmp, POINT_OFF, COLUMN_OFF, i);
break;
}/* Point on the next character */
ptr++;
/* Increment the character counter */
i++;
}
}
/**
* @brief This function Clear the whole LCD RAM.
* @param None
* @retval None
*/
void LCD_GLASS_Clear(void)
{
uint8_t counter = 0;
/* TO wait LCD Ready */
while( LCD_GetFlagStatus (LCD_FLAG_UDR) != RESET) ;
for (counter = LCD_RAMRegister_0; counter <= LCD_RAMRegister_15; counter++)
{
LCD->RAM[counter] = 0;
}
/* Update the LCD display */
LCD_UpdateDisplayRequest();
}
/**
* @brief Display a string in scrolling mode
* @param ptr: Pointer to string to display on the LCD Glass.
* @param nScroll: Specifies how many time the message will be scrolled
* @param ScrollSpeed : Speciifes the speed of the scroll, low value gives
* higher speed
* @retval None
* @par Required preconditions: The LCD should be cleared before to start the
* write operation.
*/
void LCD_GLASS_ScrollSentence(uint8_t* ptr, uint16_t nScroll, uint16_t ScrollSpeed)
{
uint8_t Repetition;
uint8_t Char_Nb;
uint8_t* ptr1;
uint8_t str[7]="";
uint8_t Str_size;
if (ptr == 0) return;
/* To calculate end of string */
for (ptr1=ptr,Str_size = 0 ; *ptr1 != 0; Str_size++,ptr1++) ;
ptr1 = ptr;
LCD_GLASS_DisplayString(ptr);
Delay(ScrollSpeed);
/* To shift the string for scrolling display*/
for (Repetition=0; Repetition<nScroll; Repetition++)
{
for (Char_Nb=0; Char_Nb<Str_size; Char_Nb++)
{
*(str) =* (ptr1+((Char_Nb+1)%Str_size));
*(str+1) =* (ptr1+((Char_Nb+2)%Str_size));
*(str+2) =* (ptr1+((Char_Nb+3)%Str_size));
*(str+3) =* (ptr1+((Char_Nb+4)%Str_size));
*(str+4) =* (ptr1+((Char_Nb+5)%Str_size));
*(str+5) =* (ptr1+((Char_Nb+6)%Str_size));
LCD_GLASS_Clear();
LCD_GLASS_DisplayString(str);
/* user button pressed stop the scrolling sentence */
if (KeyPressed)
return;
Delay(ScrollSpeed);
}
}
}
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
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