E3 Designers
Baseline for testing
Revision 2:73721d9e0056, committed 2019-09-17
- Comitter:
- foxbrianr
- Date:
- Tue Sep 17 13:48:43 2019 +0000
- Parent:
- 1:0f1dffc6103a
- Commit message:
- Beta 2
Changed in this revision
| LCD.cpp | Show annotated file Show diff for this revision Revisions of this file |
| LCD.h | Show annotated file Show diff for this revision Revisions of this file |
--- a/LCD.cpp Thu Sep 12 11:27:29 2019 +0000
+++ b/LCD.cpp Tue Sep 17 13:48:43 2019 +0000
@@ -1,8 +1,37 @@
+/**************************************************************************
+ * @file LCD.cpp
+ * @brief Base class for wrapping the interface with the New Haven 40x4
+ * LCD monitor.
+ * @version: V1.0
+ * @date: 9/17/2019
+
+ *
+ * @note
+ * Copyright (C) 2019 E3 Design. All rights reserved.
+ *
+ * @par
+ * E3 Designers LLC is supplying this software for use with Cortex-M3 LPC1768
+ * processor based microcontroller for the ESCM 2000 Monitor and Display.
+ * *
+ * @par
+ * THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED
+ * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
+ * ARM SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
+ * CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
+ *
+ ******************************************************************************/
#include "mbed.h"
#include "LCD.h"
#include <stdio.h>
#include <ctype.h>
+
+#define WAIT_TIME 100
+
+#define wait_ms(x) ThisThread::sleep_for(x)
+
+/*****************************************************************************/
LCD::LCD():
LCD_E1(p17),
LCD_E2(p18),
@@ -27,15 +56,15 @@
isOutput=1;
}
-/*
- * Destructor the LCD.
- */
+
+/*****************************************************************************/
LCD::~LCD()
{
}
+/*****************************************************************************/
void LCD::command1(char i) //Top half of the display
{
LCD_DATA.output();
@@ -49,6 +78,7 @@
//printf("C1:%x\n\r", i);
}
+/*****************************************************************************/
void LCD::command2(char i) //Bottom half of the display
{
LCD_DATA.output();
@@ -62,6 +92,7 @@
//printf("C2:%x\n\r", i);
}
+/*****************************************************************************/
void LCD::writedata1(char i) //Top half of the display
{;
LCD_DATA.output();
@@ -71,9 +102,9 @@
LCD_E1 = 1;
wait_us(40); // wait 40 us for most commands
LCD_E1 = 0;
- //printf("D1:%x\n\r", i);
}
+/*****************************************************************************/
void LCD::writedata2(char i) //Bottom half of the display
{
LCD_DATA.output();
@@ -83,16 +114,19 @@
LCD_E2 = 1;
wait_us(40); // wait 40 us for most commands
LCD_E2 = 0;
- //printf("D2:%x\n\r", i);
}
+/*****************************************************************************/
void LCD::nextline1(){
writeCommand(0xc0,1,0); //set DDRAM address to 40 (line 2)
}
+
+/*****************************************************************************/
void LCD::nextline2(){
writeCommand(0xc0,0,1); //set DDRAM address to 40 (line 4)
}
+/*****************************************************************************/
void LCD::display(char *show){ //show character data on display
char datum;
int i;
@@ -121,6 +155,7 @@
}
+/*****************************************************************************/
void LCD::writeByte1(int value) {
// -------------------------------------------------
@@ -129,7 +164,7 @@
LCD_RW = 0;
LCD_E1 = 1;
- wait_ms(5); // wait 40 us for most commands
+ wait_ms(2); // wait 40 us for most commands
__nop();
LCD_E1 = 0;
@@ -139,14 +174,14 @@
// -------------------------------------------------
LCD_DATA = value >> 0;
LCD_E1 = 1;
- wait_ms(5); // wait 40 us for most commands
+ wait_ms(2); // wait 40 us for most commands
__nop();
LCD_E1 = 0;
//printf("x1:%x\n\r", value);
}
-
+/*****************************************************************************/
void LCD::writeByte2(int value) {
// -------------------------------------------------
@@ -154,7 +189,7 @@
LCD_DATA = value >> 4;
LCD_RW = 0;
LCD_E2 = 1;
- wait_ms(5); // wait 40 us for most commands
+ wait_ms(2); // wait 40 us for most commands
__nop();
LCD_E2 = 0;
@@ -164,15 +199,13 @@
// -------------------------------------------------
LCD_DATA = value >> 0;
LCD_E2 = 1;
- wait_ms(5); // wait 40 us for most commands
+ wait_ms(2); // wait 40 us for most commands
__nop();
LCD_E2 = 0;
//printf("x2:%x\n\r", value);
}
-
-
/************************************************************************/
void LCD::init(void)
{
@@ -214,36 +247,50 @@
}
-
+/*****************************************************************************/
void LCD::locate(int row, int column) {
-
_row = row;
_column = column;
+}
-
-}
+/*****************************************************************************/
void LCD::cls(){
+ clear(1,1);
+ wait_ms(2);
+
+ //fprintf(stdout,"C1:\n\r");
}
+/*****************************************************************************/
+void LCD::clear()
+{
+ locate(0,0);write(" ");
+ locate(1,0);write(" ");
+ locate(2,0);write(" ");
+ locate(3,0);write(" ");
+}
+/*****************************************************************************/
void LCD::clear(int e1, int e2 ){
+ waitBusy();
writeCommand(LCD_clearDisplay,e1,e2);
_row = 0;
_column = 0;
}
-
-
+/*****************************************************************************/
int LCD::isBusy1(void)
{
- int input = 0;
- int hi = 0;
- int lo = 0;
+ volatile int input = 0;
+ volatile int hi = 0;
+ volatile int lo = 0;
int result = 0;
LCD_RW = 1;
+ __nop();
LCD_RS = 0;
+
LCD_DATA.input(); // switch port back to output
LCD_E1 = 1;
@@ -255,41 +302,47 @@
hi = LCD_DATA.read() ; // read high bit
__nop();
LCD_E1 = 0;
+
- //printf("isBusy1? = 0x%02x 0x%02x \n\r", lo,hi );
-
- if ((0x8 & input)) // wait until display is ready
+ if ((0x8 & lo)) // wait until display is ready
{
result = 1;
}
result =0;
LCD_RW = 0;
LCD_DATA.output(); // switch port back to output
+
+ //fprintf(stdout,"isBusy1? = 0x%02x 0x%02x \n\r", lo,hi );
+
return result;
}
+/*****************************************************************************/
int LCD::isBusy2(void)
{
- int input = 0;
+ volatile int input = 0;
+ volatile int hi = 0;
+ volatile int lo = 0;
int result = 0;
LCD_RW = 1;
+ __nop();
LCD_RS = 0;
+ LCD_DATA.input(); // switch port back to output
LCD_E2 = 1;
__nop();
- input = LCD_DATA.read() >> 0; // read low bit
+ lo = LCD_DATA.read() >> 0; // read low bit
LCD_E2 = 0;
__nop();
LCD_E2 = 1;
- input = LCD_DATA.read() >> 4; // read high bit
+ hi = LCD_DATA.read() >> 4; // read high bit
__nop();
LCD_E2 = 0;
- //printf("isBusy1? = 0x%02x \n\r", input );
- if ((0x8 & input)) // wait until display is ready
+ if ((0x8 & lo)) // wait until display is ready
{
result = 1;
}
@@ -297,64 +350,29 @@
LCD_RW = 0;
LCD_DATA.output(); // switch port back to output
+ //fprintf(stdout,"isBusy2? = 0x%02x 0x%02x \n\r", lo,hi );
return result;
}
-
-
+/*****************************************************************************/
int LCD::isBusy(int e1, int e2)
{
int input = 0;
int result = 0;
- LCD_RW = 1;
- LCD_RS = 0;
- LCD_DATA.input(); // switch port back to output
-
if (e1) {
- LCD_E1 = 1;
- __nop();
- input = LCD_DATA.read() >> 0; // read low bit
- LCD_E1 = 0;
- __nop();
- LCD_E1 = 1;
- input = LCD_DATA.read() >> 4; // read high bit
- __nop();
- LCD_E1 = 0;
+ result=isBusy1();
+ }
- //printf("0x%02x \n\r", input );
-
- if ((0x8 & input)) // wait until display is ready
- {
- result = 1;
- }
- }
-
-
if (e2 && result==0) {
- LCD_E2 = 1;
- __nop();
- input = LCD_DATA.read() >> 0; // read low bit
- //printf("0x%02dFF \n\r", input );
- LCD_E2 = 0;
- __nop();
- LCD_E2 = 1;
- input = LCD_DATA.read() >> 4; // read high bit
- __nop();
- LCD_E2 = 0;
-
- if ((0x8 & input)) // wait until display is ready
- {
- result = 1;
- }
+ result=isBusy2();
}
- LCD_RW = 0;
- LCD_DATA.output(); // switch port back to output
return result;
}
+/*****************************************************************************/
void LCD::waitBusy()
{
unsigned char statusBit;
@@ -362,11 +380,13 @@
//int i=0;
while (statusBit)
{
+ fprintf(stdout,"!");
statusBit = isBusy(1,1);
- wait_us(5);
+ wait_us(1);
}
}
+/*****************************************************************************/
void LCD::writeData(char value, int e1, int e2 ){
@@ -379,14 +399,14 @@
LCD_DATA = hi;
LCD_E1 = 1;
- wait_us(1000); // wait 40 us for most commands
+ wait_us(WAIT_TIME); // wait 40 us for most commands
LCD_E1 = 0;
- wait_us(1000); // wait 40 us for most commands
+ wait_us(WAIT_TIME); // wait 40 us for most commands
LCD_DATA = lo;
LCD_E1 = 1;
- wait_us(1000); // wait 40 us for most commands
+ wait_us(WAIT_TIME); // wait 40 us for most commands
LCD_E1 = 0;
}
@@ -394,35 +414,41 @@
{
LCD_DATA = hi;
LCD_E2= 1;
- wait_us(1000); // wait 40 us for most commands
+ wait_us(WAIT_TIME); // wait 40 us for most commands
LCD_E2= 0;
- wait_us(1000); // wait 40 us for most commands
+ wait_us(WAIT_TIME); // wait 40 us for most commands
LCD_DATA = lo;
LCD_E2= 1;
- wait_us(1000); // wait 40 us for most commands
+ wait_us(WAIT_TIME); // wait 40 us for most commands
LCD_E2= 0;
}
}
+/*****************************************************************************/
void LCD::writeCommand(char value, int e1, int e2){
+ waitBusy();
LCD_RS = 0;
writeData(value,e1,e2);
}
+/*****************************************************************************/
void LCD::writeChar(char value, int e1, int e2){
+ //waitBusy();
LCD_RS = 1;
writeData(value,e1,e2);
}
+/*****************************************************************************/
void LCD::putc(const char c)
{
character(_row, _column, c);
}
+/*****************************************************************************/
void LCD::printf(const char *message, ...)
{
char buffer[128];
@@ -433,13 +459,16 @@
va_end(argptr);
}
+/*****************************************************************************/
void LCD::write(const char* text) {
//_row = 0;
//_column = 0;
int characterAmount =0;
for(int i = 0; text[i] != '\0'; i++) {
- if (!isprint(text[i])) { fprintf(stdout,"^%02x ", text[i]);}
+ if (!isprint(text[i])) {
+ fprintf(stdout,"^%02x : %s ", text[i],text);
+ }
characterAmount++;
}
@@ -456,6 +485,7 @@
}
}
+/*****************************************************************************/
void LCD::writeLine(int line, const char* text ) {
_row = line;
@@ -477,11 +507,13 @@
}
}
+/*****************************************************************************/
void LCD::writeCharacter(const char c, int row, int column) {
locate(row, column);
character(_row, _column, c);
}
+/*****************************************************************************/
void LCD::writeCharacters(const char* text, int row, int column) {
locate(row, column);
@@ -495,6 +527,7 @@
}
}
+/*****************************************************************************/
int LCD::address(int row, int column){
int a=0x80;
@@ -518,6 +551,7 @@
return a;
}
+/*****************************************************************************/
void LCD::character(int row, int column, char c) {
uint8_t a = address(row, column);
@@ -535,7 +569,7 @@
if(_column < columns())
_column++;
if (_column >= columns()){
- #if 0
+ #if 1
if (_row == 0){
_column = 0;
_row++;
@@ -548,6 +582,7 @@
}
}
+/*****************************************************************************/
void LCD::setCursorMode( int mode )
{
if (mode)
--- a/LCD.h Thu Sep 12 11:27:29 2019 +0000
+++ b/LCD.h Tue Sep 17 13:48:43 2019 +0000
@@ -1,4 +1,26 @@
+/**************************************************************************
+ * @file LCD.h
+ * @brief Base class for wrapping the interface with the New Haven 40x4
+ * LCD monitor.
+ * @version: V1.0
+ * @date: 9/17/2019
+ *
+ * @note
+ * Copyright (C) 2019 E3 Design. All rights reserved.
+ *
+ * @par
+ * E3 Designers LLC is supplying this software for use with Cortex-M3 LPC1768
+ * processor based microcontroller for the ESCM 2000 Monitor and Display.
+ * *
+ * @par
+ * THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED
+ * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
+ * ARM SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
+ * CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
+ *
+ ******************************************************************************/
#ifndef _LCD_
#define _LCD_
@@ -85,7 +107,9 @@
void init(void) ;
void display(char *show);
-
+
+ void clear();
+
void cls();
void locate(int row, int column);
@@ -150,9 +174,9 @@
Mutex mutex;
- int _row;
- int _column;
- char isOutput;
+ volatile int _row;
+ volatile int _column;
+ volatile char isOutput;
};