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-rw-r--r--USB_Host_Shield/Max_LCD.cpp500
1 files changed, 250 insertions, 250 deletions
diff --git a/USB_Host_Shield/Max_LCD.cpp b/USB_Host_Shield/Max_LCD.cpp
index 75ba009..eda0a52 100644
--- a/USB_Host_Shield/Max_LCD.cpp
+++ b/USB_Host_Shield/Max_LCD.cpp
@@ -26,253 +26,253 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
-
-//this code is heavily borrowed from official Arduino source v.0017
-// link to original http://code.google.com/p/arduino/source/browse/trunk/hardware/libraries/LiquidCrystal/LiquidCrystal.cpp
-#include "Max_LCD.h"
-#include "Max3421e.h"
-
-#include <stdio.h>
-#include <string.h>
-#include <inttypes.h>
-#include "WProgram.h"
-
-// When the display powers up, it is configured as follows:
-//
-// 1. Display clear
-// 2. Function set:
-// DL = 1; 8-bit interface data
-// N = 0; 1-line display
-// F = 0; 5x8 dot character font
-// 3. Display on/off control:
-// D = 0; Display off
-// C = 0; Cursor off
-// B = 0; Blinking off
-// 4. Entry mode set:
-// I/D = 1; Increment by 1
-// S = 0; No shift
-//
-// Note, however, that resetting the Arduino doesn't reset the LCD, so we
-// can't assume that it's in that state when a sketch starts
-
-// pin definition and set/clear
-
-#define RS 0x04 // RS pin
-#define E 0x08 // E pin
-
-#define SET_RS lcdPins |= RS
-#define CLR_RS lcdPins &= ~RS
-#define SET_E lcdPins |= E
-#define CLR_E lcdPins &= ~E
-
-#define SENDlcdPins() MAX3421E::gpioWr( lcdPins )
-
-#define LCD_sendcmd(a) { CLR_RS; \
- sendbyte(a); \
- }
-
-#define LCD_sendchar(a) { SET_RS; \
- sendbyte(a); \
- }
-
-static byte lcdPins; //copy of LCD pins
-
-Max_LCD::Max_LCD()
-{
- lcdPins = 0;
-}
-
-
-void Max_LCD::init()
-{
- _displayfunction = LCD_4BITMODE | LCD_1LINE | LCD_5x8DOTS;
-
- // MAX3421E::gpioWr(0x55);
-
- begin(16, 1);
-}
-
-void Max_LCD::begin(uint8_t cols, uint8_t lines, uint8_t dotsize) {
- if (lines > 1) {
- _displayfunction |= LCD_2LINE;
- }
- _numlines = lines;
- _currline = 0;
-
- // for some 1 line displays you can select a 10 pixel high font
- if ((dotsize != 0) && (lines == 1)) {
- _displayfunction |= LCD_5x10DOTS;
- }
-
- // SEE PAGE 45/46 FOR INITIALIZATION SPECIFICATION!
- // according to datasheet, we need at least 40ms after power rises above 2.7V
- // before sending commands. Arduino can turn on way befer 4.5V so we'll wait 50
- delayMicroseconds(50000);
- lcdPins = 0x30;
- SET_E;
- SENDlcdPins();
- CLR_E;
- SENDlcdPins();
- delayMicroseconds(10000); // wait min 4.1ms
- //second try
- SET_E;
- SENDlcdPins();
- CLR_E;
- SENDlcdPins();
- delayMicroseconds(10000); // wait min 4.1ms
- // third go!
- SET_E;
- SENDlcdPins();
- CLR_E;
- SENDlcdPins();
- delayMicroseconds(10000);
- // finally, set to 4-bit interface
- lcdPins = 0x20;
- //SET_RS;
- SET_E;
- SENDlcdPins();
- //CLR_RS;
- CLR_E;
- SENDlcdPins();
- delayMicroseconds(10000);
- // finally, set # lines, font size, etc.
- command(LCD_FUNCTIONSET | _displayfunction);
-
- // turn the display on with no cursor or blinking default
- _displaycontrol = LCD_DISPLAYON | LCD_CURSOROFF | LCD_BLINKOFF;
- display();
-
- // clear it off
- clear();
-
- // Initialize to default text direction (for romance languages)
- _displaymode = LCD_ENTRYLEFT | LCD_ENTRYSHIFTDECREMENT;
- // set the entry mode
- command(LCD_ENTRYMODESET | _displaymode);
-}
-
-/********** high level commands, for the user! */
-void Max_LCD::clear()
-{
- command(LCD_CLEARDISPLAY); // clear display, set cursor position to zero
- delayMicroseconds(2000); // this command takes a long time!
-}
-
-void Max_LCD::home()
-{
- command(LCD_RETURNHOME); // set cursor position to zero
- delayMicroseconds(2000); // this command takes a long time!
-}
-
-void Max_LCD::setCursor(uint8_t col, uint8_t row)
-{
- int row_offsets[] = { 0x00, 0x40, 0x14, 0x54 };
- if ( row > _numlines ) {
- row = _numlines-1; // we count rows starting w/0
- }
-
- command(LCD_SETDDRAMADDR | (col + row_offsets[row]));
-}
-
-// Turn the display on/off (quickly)
-void Max_LCD::noDisplay() {
- _displaycontrol &= ~LCD_DISPLAYON;
- command(LCD_DISPLAYCONTROL | _displaycontrol);
-}
-void Max_LCD::display() {
- _displaycontrol |= LCD_DISPLAYON;
- command(LCD_DISPLAYCONTROL | _displaycontrol);
-}
-
-// Turns the underline cursor on/off
-void Max_LCD::noCursor() {
- _displaycontrol &= ~LCD_CURSORON;
- command(LCD_DISPLAYCONTROL | _displaycontrol);
-}
-void Max_LCD::cursor() {
- _displaycontrol |= LCD_CURSORON;
- command(LCD_DISPLAYCONTROL | _displaycontrol);
-}
-
-
-// Turn on and off the blinking cursor
-void Max_LCD::noBlink() {
- _displaycontrol &= ~LCD_BLINKON;
- command(LCD_DISPLAYCONTROL | _displaycontrol);
-}
-void Max_LCD::blink() {
- _displaycontrol |= LCD_BLINKON;
- command(LCD_DISPLAYCONTROL | _displaycontrol);
-}
-
-// These commands scroll the display without changing the RAM
-void Max_LCD::scrollDisplayLeft(void) {
- command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVELEFT);
-}
-void Max_LCD::scrollDisplayRight(void) {
- command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVERIGHT);
-}
-
-// This is for text that flows Left to Right
-void Max_LCD::leftToRight(void) {
- _displaymode |= LCD_ENTRYLEFT;
- command(LCD_ENTRYMODESET | _displaymode);
-}
-
-// This is for text that flows Right to Left
-void Max_LCD::rightToLeft(void) {
- _displaymode &= ~LCD_ENTRYLEFT;
- command(LCD_ENTRYMODESET | _displaymode);
-}
-
-// This will 'right justify' text from the cursor
-void Max_LCD::autoscroll(void) {
- _displaymode |= LCD_ENTRYSHIFTINCREMENT;
- command(LCD_ENTRYMODESET | _displaymode);
-}
-
-// This will 'left justify' text from the cursor
-void Max_LCD::noAutoscroll(void) {
- _displaymode &= ~LCD_ENTRYSHIFTINCREMENT;
- command(LCD_ENTRYMODESET | _displaymode);
-}
-
-// Allows us to fill the first 8 CGRAM locations
-// with custom characters
-void Max_LCD::createChar(uint8_t location, uint8_t charmap[]) {
- location &= 0x7; // we only have 8 locations 0-7
- command(LCD_SETCGRAMADDR | (location << 3));
- for (int i=0; i<8; i++) {
- write(charmap[i]);
- }
-}
-
-/*********** mid level commands, for sending data/cmds */
-
-inline void Max_LCD::command(uint8_t value) {
- LCD_sendcmd(value);
- delayMicroseconds(100);
-}
-
-inline void Max_LCD::write(uint8_t value) {
- LCD_sendchar(value);
-}
-
-void Max_LCD::sendbyte( uint8_t val )
-{
- lcdPins &= 0x0f; //prepare place for the upper nibble
- lcdPins |= ( val & 0xf0 ); //copy upper nibble to LCD variable
- SET_E; //send
- SENDlcdPins();
- delayMicroseconds(2);
- CLR_E;
- delayMicroseconds(2);
- SENDlcdPins();
- lcdPins &= 0x0f; //prepare place for the lower nibble
- lcdPins |= ( val << 4 ) & 0xf0; //copy lower nibble to LCD variable
- SET_E; //send
- SENDlcdPins();
- CLR_E;
- SENDlcdPins();
- delayMicroseconds(100);
-}
+
+//this code is heavily borrowed from official Arduino source v.0017
+// link to original http://code.google.com/p/arduino/source/browse/trunk/hardware/libraries/LiquidCrystal/LiquidCrystal.cpp
+#include "Max_LCD.h"
+#include "Max3421e.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <inttypes.h>
+#include "Arduino.h"
+
+// When the display powers up, it is configured as follows:
+//
+// 1. Display clear
+// 2. Function set:
+// DL = 1; 8-bit interface data
+// N = 0; 1-line display
+// F = 0; 5x8 dot character font
+// 3. Display on/off control:
+// D = 0; Display off
+// C = 0; Cursor off
+// B = 0; Blinking off
+// 4. Entry mode set:
+// I/D = 1; Increment by 1
+// S = 0; No shift
+//
+// Note, however, that resetting the Arduino doesn't reset the LCD, so we
+// can't assume that it's in that state when a sketch starts
+
+// pin definition and set/clear
+
+#define RS 0x04 // RS pin
+#define E 0x08 // E pin
+
+#define SET_RS lcdPins |= RS
+#define CLR_RS lcdPins &= ~RS
+#define SET_E lcdPins |= E
+#define CLR_E lcdPins &= ~E
+
+#define SENDlcdPins() MAX3421E::gpioWr( lcdPins )
+
+#define LCD_sendcmd(a) { CLR_RS; \
+ sendbyte(a); \
+ }
+
+#define LCD_sendchar(a) { SET_RS; \
+ sendbyte(a); \
+ }
+
+static byte lcdPins; //copy of LCD pins
+
+Max_LCD::Max_LCD()
+{
+ lcdPins = 0;
+}
+
+
+void Max_LCD::init()
+{
+ _displayfunction = LCD_4BITMODE | LCD_1LINE | LCD_5x8DOTS;
+
+ // MAX3421E::gpioWr(0x55);
+
+ begin(16, 1);
+}
+
+void Max_LCD::begin(uint8_t cols, uint8_t lines, uint8_t dotsize) {
+ if (lines > 1) {
+ _displayfunction |= LCD_2LINE;
+ }
+ _numlines = lines;
+ _currline = 0;
+
+ // for some 1 line displays you can select a 10 pixel high font
+ if ((dotsize != 0) && (lines == 1)) {
+ _displayfunction |= LCD_5x10DOTS;
+ }
+
+ // SEE PAGE 45/46 FOR INITIALIZATION SPECIFICATION!
+ // according to datasheet, we need at least 40ms after power rises above 2.7V
+ // before sending commands. Arduino can turn on way befer 4.5V so we'll wait 50
+ delayMicroseconds(50000);
+ lcdPins = 0x30;
+ SET_E;
+ SENDlcdPins();
+ CLR_E;
+ SENDlcdPins();
+ delayMicroseconds(10000); // wait min 4.1ms
+ //second try
+ SET_E;
+ SENDlcdPins();
+ CLR_E;
+ SENDlcdPins();
+ delayMicroseconds(10000); // wait min 4.1ms
+ // third go!
+ SET_E;
+ SENDlcdPins();
+ CLR_E;
+ SENDlcdPins();
+ delayMicroseconds(10000);
+ // finally, set to 4-bit interface
+ lcdPins = 0x20;
+ //SET_RS;
+ SET_E;
+ SENDlcdPins();
+ //CLR_RS;
+ CLR_E;
+ SENDlcdPins();
+ delayMicroseconds(10000);
+ // finally, set # lines, font size, etc.
+ command(LCD_FUNCTIONSET | _displayfunction);
+
+ // turn the display on with no cursor or blinking default
+ _displaycontrol = LCD_DISPLAYON | LCD_CURSOROFF | LCD_BLINKOFF;
+ display();
+
+ // clear it off
+ clear();
+
+ // Initialize to default text direction (for romance languages)
+ _displaymode = LCD_ENTRYLEFT | LCD_ENTRYSHIFTDECREMENT;
+ // set the entry mode
+ command(LCD_ENTRYMODESET | _displaymode);
+}
+
+/********** high level commands, for the user! */
+void Max_LCD::clear()
+{
+ command(LCD_CLEARDISPLAY); // clear display, set cursor position to zero
+ delayMicroseconds(2000); // this command takes a long time!
+}
+
+void Max_LCD::home()
+{
+ command(LCD_RETURNHOME); // set cursor position to zero
+ delayMicroseconds(2000); // this command takes a long time!
+}
+
+void Max_LCD::setCursor(uint8_t col, uint8_t row)
+{
+ int row_offsets[] = { 0x00, 0x40, 0x14, 0x54 };
+ if ( row > _numlines ) {
+ row = _numlines-1; // we count rows starting w/0
+ }
+
+ command(LCD_SETDDRAMADDR | (col + row_offsets[row]));
+}
+
+// Turn the display on/off (quickly)
+void Max_LCD::noDisplay() {
+ _displaycontrol &= ~LCD_DISPLAYON;
+ command(LCD_DISPLAYCONTROL | _displaycontrol);
+}
+void Max_LCD::display() {
+ _displaycontrol |= LCD_DISPLAYON;
+ command(LCD_DISPLAYCONTROL | _displaycontrol);
+}
+
+// Turns the underline cursor on/off
+void Max_LCD::noCursor() {
+ _displaycontrol &= ~LCD_CURSORON;
+ command(LCD_DISPLAYCONTROL | _displaycontrol);
+}
+void Max_LCD::cursor() {
+ _displaycontrol |= LCD_CURSORON;
+ command(LCD_DISPLAYCONTROL | _displaycontrol);
+}
+
+
+// Turn on and off the blinking cursor
+void Max_LCD::noBlink() {
+ _displaycontrol &= ~LCD_BLINKON;
+ command(LCD_DISPLAYCONTROL | _displaycontrol);
+}
+void Max_LCD::blink() {
+ _displaycontrol |= LCD_BLINKON;
+ command(LCD_DISPLAYCONTROL | _displaycontrol);
+}
+
+// These commands scroll the display without changing the RAM
+void Max_LCD::scrollDisplayLeft(void) {
+ command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVELEFT);
+}
+void Max_LCD::scrollDisplayRight(void) {
+ command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVERIGHT);
+}
+
+// This is for text that flows Left to Right
+void Max_LCD::leftToRight(void) {
+ _displaymode |= LCD_ENTRYLEFT;
+ command(LCD_ENTRYMODESET | _displaymode);
+}
+
+// This is for text that flows Right to Left
+void Max_LCD::rightToLeft(void) {
+ _displaymode &= ~LCD_ENTRYLEFT;
+ command(LCD_ENTRYMODESET | _displaymode);
+}
+
+// This will 'right justify' text from the cursor
+void Max_LCD::autoscroll(void) {
+ _displaymode |= LCD_ENTRYSHIFTINCREMENT;
+ command(LCD_ENTRYMODESET | _displaymode);
+}
+
+// This will 'left justify' text from the cursor
+void Max_LCD::noAutoscroll(void) {
+ _displaymode &= ~LCD_ENTRYSHIFTINCREMENT;
+ command(LCD_ENTRYMODESET | _displaymode);
+}
+
+// Allows us to fill the first 8 CGRAM locations
+// with custom characters
+void Max_LCD::createChar(uint8_t location, uint8_t charmap[]) {
+ location &= 0x7; // we only have 8 locations 0-7
+ command(LCD_SETCGRAMADDR | (location << 3));
+ for (int i=0; i<8; i++) {
+ write(charmap[i]);
+ }
+}
+
+/*********** mid level commands, for sending data/cmds */
+
+inline void Max_LCD::command(uint8_t value) {
+ LCD_sendcmd(value);
+ delayMicroseconds(100);
+}
+
+inline size_t Max_LCD::write(uint8_t value) {
+ LCD_sendchar(value);
+}
+
+void Max_LCD::sendbyte( uint8_t val )
+{
+ lcdPins &= 0x0f; //prepare place for the upper nibble
+ lcdPins |= ( val & 0xf0 ); //copy upper nibble to LCD variable
+ SET_E; //send
+ SENDlcdPins();
+ delayMicroseconds(2);
+ CLR_E;
+ delayMicroseconds(2);
+ SENDlcdPins();
+ lcdPins &= 0x0f; //prepare place for the lower nibble
+ lcdPins |= ( val << 4 ) & 0xf0; //copy lower nibble to LCD variable
+ SET_E; //send
+ SENDlcdPins();
+ CLR_E;
+ SENDlcdPins();
+ delayMicroseconds(100);
+}
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