ran dos2unix

1 files changed, 308 insertions, 308 deletions

diff --git a/lcd.c b/lcd.c
index 508f1a0..076cd8e 100644
--- a/lcd.c
+++ b/lcd.c
@@ -1,308 +1,308 @@
-#include "i2c.h"

-#include "lcd.h"

-#include <glib.h>

-#include <string.h>

-#include <stdlib.h>

-

-#define LCD_ENABLE	0x03	/* the 4x40 LCDs have two enable lines - 0x03 enables both at the same time */

-#define LCD_DATA_RAM	128		/* display RAM, in the LCD ICs */

-#define LCD_CG_RAM	64		/* custom character RAM, in the LCD ICs */

-

-#define LCD_chars_total 160

-#define LCD_cols    	40

-#define LCD_rows    	4		/* 4x40 LCD */

-

-char LCD_Data[LCD_rows][LCD_cols];	/* shadow copy of LCD display in local RAM, to minimize slow I2C writes */

-

-/*** EndHeader */

-

-

-static void break_up_string (char *in_string, int N, char **str1, char **str2, char **str3)

-{

-

-#define SUBSTRING_CNT 3

-

-	int input_length;

-	int j, k, copypos;

-	int n;

-

-	char *copy_input;

-	char *p;

-

-	j=k=copypos=0;

-	input_length=strlen(in_string);

-	copy_input = g_strdup(in_string);

-

-	for (j=0; j<SUBSTRING_CNT; j++) {

-

-		gchar *interm_str = g_strnfill (N, 0);

-

-		for (k=0; k<N; k++) {

-			copypos++; // next symbol

-			if (copypos>input_length) {

-				break;

-			}

-			if ((*(copy_input+k)==' ')&&(copypos<input_length)) { // space found

-				//find next space

-				p=strchr(copy_input+k+1,' ');

-				if (p!=NULL) {

-					// next space is beyond N char limit for one line

-					if((p-copy_input)/sizeof(char)>=N) {

-						break;

-					}

-				} else {

-					// No more spaces. Does the last chunk of text fit?

-					if (strlen(copy_input+k+1)>N-k) {

-						break;

-					}

-				}

-			}

-			// valid character, copy to output string

-			*(interm_str+k)=*(copy_input+k);

-

-		}

-		// remove processed part from the input

-		if (copypos<=input_length) {

-			strcpy(copy_input, in_string+copypos);

-		}

-		n = strlen(interm_str);

-		for ((k=n-1); (k=0); k--) { //trim   space

-			if (*(interm_str+k)==' ') {

-				*(interm_str+k)=0;

-			} else {

-				break;

-			}

-		}

-		switch (j) {

-		case 0:

-			*str1 = g_strdup(interm_str);

-			break;

-		case 1:

-			*str2 = g_strdup(interm_str);

-			break;

-		case 2:

-			*str3 = g_strdup(interm_str);

-			break;

-		}

-		g_free(interm_str);

-

-	}

-

-	g_free(copy_input);

-}

-

-

-

-

-void LCD_clear()

-{

-	int i;

-	int j;

-

-	I2C_Write(PCF8574A+LCD_Port, 0x00 | LCD_ENABLE);

-	I2C_Write(PCF8574A+LCD_Port, 0x00);

-	I2C_Write(PCF8574A+LCD_Port, 0x10 | LCD_ENABLE);

-	I2C_Write(PCF8574A+LCD_Port, 0x10);

-

-	/* wait 1.64ms */

-	g_usleep(1640);

-

-	for (i=0; i<4; ++i)

-		for (j=0; j<40; ++j) {

-			LCD_Data[i][j]=0;

-		}

-

-	return;

-}

-

-

-static void LCD_RAM_write(int RAM_start,int row, int col, char *LCD_string)

-{

-	/* rows: 0-3, cols: 0-39 */

-

-#define data_level 0x04

-

-	int i;

-	int cur_row, cur_col;

-	int String_length;

-	char char_out, enable_one_lcd;

-	int ram_location;

-	char last_op_a_write;

-

-	if (!LCD_string) {

-		return;

-	}

-

-	String_length=strlen(LCD_string);

-	enable_one_lcd=0x02;

-

-	last_op_a_write=0;

-	cur_row=row;

-	cur_col=col;

-

-	if (cur_row<2) {

-		enable_one_lcd=0x02;

-	} else {

-		enable_one_lcd=0x01;

-	}

-

-	/* write out the string */

-	for (i=0; i<String_length; ++i) {

-		if (cur_row<2) {

-			enable_one_lcd=0x02;

-		} else {

-			enable_one_lcd=0x01;

-		}

-

-		if (LCD_string[i]!=LCD_Data[cur_row][cur_col]) {

-			if (!last_op_a_write) {

-				/* move to new position */

-				ram_location = (cur_row & 1) * 64 + cur_col + RAM_start;

-				char_out=ram_location & 0xf0;

-				I2C_Write(PCF8574A+LCD_Port, char_out | enable_one_lcd);

-				I2C_Write(PCF8574A+LCD_Port, char_out);

-				char_out=ram_location << 4;

-				I2C_Write(PCF8574A+LCD_Port, char_out | enable_one_lcd);

-				I2C_Write(PCF8574A+LCD_Port, char_out);

-			}

-			LCD_Data[cur_row][cur_col]=LCD_string[i];

-			char_out=LCD_string[i] & 0xf0;

-			I2C_Write(PCF8574A+LCD_Port, char_out | enable_one_lcd | data_level);

-			I2C_Write(PCF8574A+LCD_Port, char_out | data_level);

-			char_out=LCD_string[i] << 4;

-			I2C_Write(PCF8574A+LCD_Port, char_out | enable_one_lcd | data_level);

-			I2C_Write(PCF8574A+LCD_Port, char_out | data_level);

-			last_op_a_write=1;

-		} else {

-			last_op_a_write=0;

-		}

-

-		++cur_col;

-		if (cur_col==40) {

-			cur_col=0;

-			++cur_row;

-		}

-	}

-	return;

-}

-

-

-void LCD_write(int row, int col, char *LCD_string)

-{

-	LCD_RAM_write(LCD_DATA_RAM, row, col, LCD_string);

-	return;

-}

-

-

-static void LCD_make_custom_chars()

-{

-	/* define custom LCD characters 2 and 3 (up arrow and down arrow).*/

-	/* The up arrow is stored in one LCD controller (for rows 0 and 1) */

-	/* The down arrow is stored in the other LCD controller (for rows 2 and 3) */

-	LCD_RAM_write(LCD_CG_RAM,0,16,"\x4");

-	LCD_RAM_write(LCD_CG_RAM,0,17,"\xe");

-	LCD_RAM_write(LCD_CG_RAM,0,18,"\x15");

-	LCD_RAM_write(LCD_CG_RAM,0,19,"\x4");

-	LCD_RAM_write(LCD_CG_RAM,0,20,"\x4");

-	LCD_RAM_write(LCD_CG_RAM,0,21,"\x4");

-	LCD_RAM_write(LCD_CG_RAM,0,22,"\x4");

-	LCD_RAM_write(LCD_CG_RAM,0,23,"\x4");

-	LCD_RAM_write(LCD_CG_RAM,2,24,"\x4");

-	LCD_RAM_write(LCD_CG_RAM,2,25,"\x4");

-	LCD_RAM_write(LCD_CG_RAM,2,26,"\x4");

-	LCD_RAM_write(LCD_CG_RAM,2,27,"\x4");

-	LCD_RAM_write(LCD_CG_RAM,2,28,"\x4");

-	LCD_RAM_write(LCD_CG_RAM,2,29,"\x15");

-	LCD_RAM_write(LCD_CG_RAM,2,30,"\xe");

-	LCD_RAM_write(LCD_CG_RAM,2,31,"\x4");

-// prove that it works - debug only

-//	LCD_RAM_write(LCD_DATA_RAM,0,39,"\x2");

-//	LCD_RAM_write(LCD_DATA_RAM,3,39,"\x3");

-

-	return;

-}

-

-

-void LCD_initialize(void)

-{

-	/* Wait 15ms */

-	g_usleep(15000);

-

-	I2C_Write(PCF8574A+LCD_Port, 0x30 | LCD_ENABLE);

-	I2C_Write(PCF8574A+LCD_Port, 0x30);

-

-	/* wait 4.1ms */

-	g_usleep(4100);

-

-	I2C_Write(PCF8574A+LCD_Port, 0x30 | LCD_ENABLE);

-	I2C_Write(PCF8574A+LCD_Port, 0x30);

-

-	/* wait 100us */

-	g_usleep(100);

-

-	I2C_Write(PCF8574A+LCD_Port, 0x30 | LCD_ENABLE);

-	I2C_Write(PCF8574A+LCD_Port, 0x30);

-

-	/* wait 4.1ms */

-	g_usleep(4100);

-

-	I2C_Write(PCF8574A+LCD_Port, 0x20 | LCD_ENABLE);

-	I2C_Write(PCF8574A+LCD_Port, 0x20);

-

-	/*wait 40us */

-	g_usleep(40);

-

-	I2C_Write(PCF8574A+LCD_Port, 0x20 | LCD_ENABLE);

-	I2C_Write(PCF8574A+LCD_Port, 0x20);

-	I2C_Write(PCF8574A+LCD_Port, 0x80 | LCD_ENABLE);

-	I2C_Write(PCF8574A+LCD_Port, 0x80);

-

-	/* wait 40us */

-	g_usleep(40);

-

-	LCD_clear();

-

-	I2C_Write(PCF8574A+LCD_Port, 0x00 | LCD_ENABLE);

-	I2C_Write(PCF8574A+LCD_Port, 0x00);

-	I2C_Write(PCF8574A+LCD_Port, 0x60 | LCD_ENABLE);

-	I2C_Write(PCF8574A+LCD_Port, 0x60);

-

-	/* wait 40us */

-	g_usleep(40);

-

-	I2C_Write(PCF8574A+LCD_Port, 0x00 | LCD_ENABLE);

-	I2C_Write(PCF8574A+LCD_Port, 0x00);

-	I2C_Write(PCF8574A+LCD_Port, 0xc0 | LCD_ENABLE);

-	I2C_Write(PCF8574A+LCD_Port, 0xc0);

-

-	LCD_make_custom_chars();

-

-	return;

-}

-

-

-void LCD_display_error_message(char *response)

-{

-	char *row0 = NULL;

-	char *row1 = NULL;

-	char *row2 = NULL;

-

-//	Error_Screen=1;  //FIXME

-

-	break_up_string (response, LCD_cols, &row0, &row1, &row2);

-

-	LCD_clear();

-	LCD_write(0,0,row0);

-	LCD_write(1,0,row1);

-	LCD_write(2,0,row2);

-	LCD_write(3,0,Press_Change_Message);

-

-	g_free (row0);

-	g_free (row1);

-	g_free (row2);

-

-	return;

-}

-

-

-

+#include "i2c.h"
+#include "lcd.h"
+#include <glib.h>
+#include <string.h>
+#include <stdlib.h>
+
+#define LCD_ENABLE	0x03	/* the 4x40 LCDs have two enable lines - 0x03 enables both at the same time */
+#define LCD_DATA_RAM	128		/* display RAM, in the LCD ICs */
+#define LCD_CG_RAM	64		/* custom character RAM, in the LCD ICs */
+
+#define LCD_chars_total 160
+#define LCD_cols    	40
+#define LCD_rows    	4		/* 4x40 LCD */
+
+char LCD_Data[LCD_rows][LCD_cols];	/* shadow copy of LCD display in local RAM, to minimize slow I2C writes */
+
+/*** EndHeader */
+
+
+static void break_up_string (char *in_string, int N, char **str1, char **str2, char **str3)
+{
+
+#define SUBSTRING_CNT 3
+
+	int input_length;
+	int j, k, copypos;
+	int n;
+
+	char *copy_input;
+	char *p;
+
+	j=k=copypos=0;
+	input_length=strlen(in_string);
+	copy_input = g_strdup(in_string);
+
+	for (j=0; j<SUBSTRING_CNT; j++) {
+
+		gchar *interm_str = g_strnfill (N, 0);
+
+		for (k=0; k<N; k++) {
+			copypos++; // next symbol
+			if (copypos>input_length) {
+				break;
+			}
+			if ((*(copy_input+k)==' ')&&(copypos<input_length)) { // space found
+				//find next space
+				p=strchr(copy_input+k+1,' ');
+				if (p!=NULL) {
+					// next space is beyond N char limit for one line
+					if((p-copy_input)/sizeof(char)>=N) {
+						break;
+					}
+				} else {
+					// No more spaces. Does the last chunk of text fit?
+					if (strlen(copy_input+k+1)>N-k) {
+						break;
+					}
+				}
+			}
+			// valid character, copy to output string
+			*(interm_str+k)=*(copy_input+k);
+
+		}
+		// remove processed part from the input
+		if (copypos<=input_length) {
+			strcpy(copy_input, in_string+copypos);
+		}
+		n = strlen(interm_str);
+		for ((k=n-1); (k=0); k--) { //trim   space
+			if (*(interm_str+k)==' ') {
+				*(interm_str+k)=0;
+			} else {
+				break;
+			}
+		}
+		switch (j) {
+		case 0:
+			*str1 = g_strdup(interm_str);
+			break;
+		case 1:
+			*str2 = g_strdup(interm_str);
+			break;
+		case 2:
+			*str3 = g_strdup(interm_str);
+			break;
+		}
+		g_free(interm_str);
+
+	}
+
+	g_free(copy_input);
+}
+
+
+
+
+void LCD_clear()
+{
+	int i;
+	int j;
+
+	I2C_Write(PCF8574A+LCD_Port, 0x00 | LCD_ENABLE);
+	I2C_Write(PCF8574A+LCD_Port, 0x00);
+	I2C_Write(PCF8574A+LCD_Port, 0x10 | LCD_ENABLE);
+	I2C_Write(PCF8574A+LCD_Port, 0x10);
+
+	/* wait 1.64ms */
+	g_usleep(1640);
+
+	for (i=0; i<4; ++i)
+		for (j=0; j<40; ++j) {
+			LCD_Data[i][j]=0;
+		}
+
+	return;
+}
+
+
+static void LCD_RAM_write(int RAM_start,int row, int col, char *LCD_string)
+{
+	/* rows: 0-3, cols: 0-39 */
+
+#define data_level 0x04
+
+	int i;
+	int cur_row, cur_col;
+	int String_length;
+	char char_out, enable_one_lcd;
+	int ram_location;
+	char last_op_a_write;
+
+	if (!LCD_string) {
+		return;
+	}
+
+	String_length=strlen(LCD_string);
+	enable_one_lcd=0x02;
+
+	last_op_a_write=0;
+	cur_row=row;
+	cur_col=col;
+
+	if (cur_row<2) {
+		enable_one_lcd=0x02;
+	} else {
+		enable_one_lcd=0x01;
+	}
+
+	/* write out the string */
+	for (i=0; i<String_length; ++i) {
+		if (cur_row<2) {
+			enable_one_lcd=0x02;
+		} else {
+			enable_one_lcd=0x01;
+		}
+
+		if (LCD_string[i]!=LCD_Data[cur_row][cur_col]) {
+			if (!last_op_a_write) {
+				/* move to new position */
+				ram_location = (cur_row & 1) * 64 + cur_col + RAM_start;
+				char_out=ram_location & 0xf0;
+				I2C_Write(PCF8574A+LCD_Port, char_out | enable_one_lcd);
+				I2C_Write(PCF8574A+LCD_Port, char_out);
+				char_out=ram_location << 4;
+				I2C_Write(PCF8574A+LCD_Port, char_out | enable_one_lcd);
+				I2C_Write(PCF8574A+LCD_Port, char_out);
+			}
+			LCD_Data[cur_row][cur_col]=LCD_string[i];
+			char_out=LCD_string[i] & 0xf0;
+			I2C_Write(PCF8574A+LCD_Port, char_out | enable_one_lcd | data_level);
+			I2C_Write(PCF8574A+LCD_Port, char_out | data_level);
+			char_out=LCD_string[i] << 4;
+			I2C_Write(PCF8574A+LCD_Port, char_out | enable_one_lcd | data_level);
+			I2C_Write(PCF8574A+LCD_Port, char_out | data_level);
+			last_op_a_write=1;
+		} else {
+			last_op_a_write=0;
+		}
+
+		++cur_col;
+		if (cur_col==40) {
+			cur_col=0;
+			++cur_row;
+		}
+	}
+	return;
+}
+
+
+void LCD_write(int row, int col, char *LCD_string)
+{
+	LCD_RAM_write(LCD_DATA_RAM, row, col, LCD_string);
+	return;
+}
+
+
+static void LCD_make_custom_chars()
+{
+	/* define custom LCD characters 2 and 3 (up arrow and down arrow).*/
+	/* The up arrow is stored in one LCD controller (for rows 0 and 1) */
+	/* The down arrow is stored in the other LCD controller (for rows 2 and 3) */
+	LCD_RAM_write(LCD_CG_RAM,0,16,"\x4");
+	LCD_RAM_write(LCD_CG_RAM,0,17,"\xe");
+	LCD_RAM_write(LCD_CG_RAM,0,18,"\x15");
+	LCD_RAM_write(LCD_CG_RAM,0,19,"\x4");
+	LCD_RAM_write(LCD_CG_RAM,0,20,"\x4");
+	LCD_RAM_write(LCD_CG_RAM,0,21,"\x4");
+	LCD_RAM_write(LCD_CG_RAM,0,22,"\x4");
+	LCD_RAM_write(LCD_CG_RAM,0,23,"\x4");
+	LCD_RAM_write(LCD_CG_RAM,2,24,"\x4");
+	LCD_RAM_write(LCD_CG_RAM,2,25,"\x4");
+	LCD_RAM_write(LCD_CG_RAM,2,26,"\x4");
+	LCD_RAM_write(LCD_CG_RAM,2,27,"\x4");
+	LCD_RAM_write(LCD_CG_RAM,2,28,"\x4");
+	LCD_RAM_write(LCD_CG_RAM,2,29,"\x15");
+	LCD_RAM_write(LCD_CG_RAM,2,30,"\xe");
+	LCD_RAM_write(LCD_CG_RAM,2,31,"\x4");
+// prove that it works - debug only
+//	LCD_RAM_write(LCD_DATA_RAM,0,39,"\x2");
+//	LCD_RAM_write(LCD_DATA_RAM,3,39,"\x3");
+
+	return;
+}
+
+
+void LCD_initialize(void)
+{
+	/* Wait 15ms */
+	g_usleep(15000);
+
+	I2C_Write(PCF8574A+LCD_Port, 0x30 | LCD_ENABLE);
+	I2C_Write(PCF8574A+LCD_Port, 0x30);
+
+	/* wait 4.1ms */
+	g_usleep(4100);
+
+	I2C_Write(PCF8574A+LCD_Port, 0x30 | LCD_ENABLE);
+	I2C_Write(PCF8574A+LCD_Port, 0x30);
+
+	/* wait 100us */
+	g_usleep(100);
+
+	I2C_Write(PCF8574A+LCD_Port, 0x30 | LCD_ENABLE);
+	I2C_Write(PCF8574A+LCD_Port, 0x30);
+
+	/* wait 4.1ms */
+	g_usleep(4100);
+
+	I2C_Write(PCF8574A+LCD_Port, 0x20 | LCD_ENABLE);
+	I2C_Write(PCF8574A+LCD_Port, 0x20);
+
+	/*wait 40us */
+	g_usleep(40);
+
+	I2C_Write(PCF8574A+LCD_Port, 0x20 | LCD_ENABLE);
+	I2C_Write(PCF8574A+LCD_Port, 0x20);
+	I2C_Write(PCF8574A+LCD_Port, 0x80 | LCD_ENABLE);
+	I2C_Write(PCF8574A+LCD_Port, 0x80);
+
+	/* wait 40us */
+	g_usleep(40);
+
+	LCD_clear();
+
+	I2C_Write(PCF8574A+LCD_Port, 0x00 | LCD_ENABLE);
+	I2C_Write(PCF8574A+LCD_Port, 0x00);
+	I2C_Write(PCF8574A+LCD_Port, 0x60 | LCD_ENABLE);
+	I2C_Write(PCF8574A+LCD_Port, 0x60);
+
+	/* wait 40us */
+	g_usleep(40);
+
+	I2C_Write(PCF8574A+LCD_Port, 0x00 | LCD_ENABLE);
+	I2C_Write(PCF8574A+LCD_Port, 0x00);
+	I2C_Write(PCF8574A+LCD_Port, 0xc0 | LCD_ENABLE);
+	I2C_Write(PCF8574A+LCD_Port, 0xc0);
+
+	LCD_make_custom_chars();
+
+	return;
+}
+
+
+void LCD_display_error_message(char *response)
+{
+	char *row0 = NULL;
+	char *row1 = NULL;
+	char *row2 = NULL;
+
+//	Error_Screen=1;  //FIXME
+
+	break_up_string (response, LCD_cols, &row0, &row1, &row2);
+
+	LCD_clear();
+	LCD_write(0,0,row0);
+	LCD_write(1,0,row1);
+	LCD_write(2,0,row2);
+	LCD_write(3,0,Press_Change_Message);
+
+	g_free (row0);
+	g_free (row1);
+	g_free (row2);
+
+	return;
+}
+
+
+