forked from thapsos/Serial_LCD
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Serial_LCD.cpp
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Serial_LCD.cpp
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//
// 4D Systems μLCD-μLED-μVGA Serial_LCD Library Suite
// Arduino 0023 chipKIT MPIDE 0023 Library
// ----------------------------------
//
// Apr 24, 2012 release 126
// See README.txt
//
// © Rei VILO, 2010-2012
// CC = BY NC SA
// http://embeddedcomputing.weebly.com/serial-lcd.html
// http://github.com/rei-vilo/Serial_LCD
//
// For
// 4D Systems Goldelox and Picaso SGC Command Set
// http://www.4dsystems.com.au/
//
//
#include "WProgram.h"
#include "proxySerial.h"
#include "Serial_LCD.h"
// Constructor
Serial_LCD::Serial_LCD(ProxySerial * port0) {
_port=port0;
};
// Interface
// 2.1 General Commands
// AutoBaud – 55hex
void Serial_LCD::begin(int8_t resetPin0) {
// default speed = 9600
_resetPin = resetPin0;
// reset is required for Goldelox-based screens
if (_resetPin>-1) {
delay(3000);
pinMode(_resetPin, OUTPUT);
digitalWrite(_resetPin, LOW);
delay(10);
digitalWrite(_resetPin, HIGH);
delay(10);
_port->flush();
}
// LCD 500 ms power-up
// SD card 3000 ms power-up
delay(3000);
_port->print('U'); // connect
while (_port->read()!=0x06) {
delay(100);
}
_port->print('o'); // clear touch
_port->print((char)0x04); // touch state
// _port->flush();
delay(100);
while (_port->available()) _port->read();
setDisplay(true); // display on
delay(100);
// screen size based on orientation
// screen type
_checkedSD = false; // SD not checked
WhoAmI();
// screen type required for setBacklight and following parameters
setBacklight(true); // backlight on
setOrientation(3);
clear();
setFont(1);
}
uint8_t Serial_LCD::replaceBackGroundColour(uint16_t colour) {
_port->print('B');
_port->print((uint16_t)colour);
return nacAck();
}
uint8_t Serial_LCD::setResolutionVGA(uint8_t b) {
if (_checkedScreenType!=__uVGA__) return 0x15; // VGA only
_port->print('Y');
_port->print((uint8_t)0x0c);
_port->print((uint8_t)b);
return nacAck();
}
uint8_t Serial_LCD::setSpeed(uint32_t speed) {
uint8_t a=0x06;
if (speed==(uint16_t) 9600) a=0x06;
else if (speed==(uint16_t) 19200) a=0x08;
else if (speed==(uint16_t) 38400) a=0x0a; // max for Arduino
else if (speed==(uint16_t) 57600) a=0x0c;
else if (speed==(uint16_t)115200) a=0x0d; // ok with chipKIT
// else if (speed==(uint16_t)256000) a=0x0f;
else return 0x15;
delay(10);
if (a != 0x06) {
_port->print('Q');
_port->print((uint8_t)a);
while (!_port->available());
a=_port->read();
}
a=0x06;
return a;
}
uint16_t _size(uint8_t ui, uint8_t answer) {
switch (ui) {
case 0x22 : return 220; // return doesn't need break
case 0x28 : return 128;
case 0x60 : return 160;
case 0x64 : return 64;
case 0x76 : return 176;
case 0x96 : return 96;
case 0x32 : return 320;
case 0x24 : return 240;
case 0xff :
if (answer==3) return 480; // assumed, to be checked
if (answer==4) return 272; // assumed, to be checked
default : return 0;
}
}
String Serial_LCD::WhoAmI() {
String s="4D Systems screen ";
_port->print('V');
_port->print((char)0x00);
delay(10);
uint8_t i=0;
uint8_t c=0;
while(_port->available()!=0) {
c=_port->read();
s += String(c, HEX);
s += " ";
if ( i==0 ) {
_checkedScreenType = c; // 8-bits uLED=0, 16_bits uLCD=1, 16_bits uVGA=2
_port->setXY16( _checkedScreenType>__uOLED__ );
}
if ( i==1 ) _checkedHardwareVersion = c;
if ( i==2 ) _checkedSoftwareVersion = c;
if ( i==3 ) _maxX = _size(c, 3); // standard
if ( i==4 ) _maxY = _size(c, 4); // standard
i++;
}
return s;
}
uint8_t Serial_LCD::clear() {
_port->print('E');
return nacAck();
}
void Serial_LCD::off() {
clear();
// _port->print('o');
// _port->print((char)0x04); // state
// _port->flush();
setBacklight(false); // backlight off
setDisplay(false); // display off
while (_port->available()) _port->read();
_port->print('Q'); // reset to default speed
_port->print((char)0x06); //
delay(10);
}
uint8_t Serial_LCD::setBacklight(boolean b) {
if (_checkedScreenType!=__uLCD__) return 0x15; // only uLCD
_port->print('Y');
_port->print((char)0x00);
_port->print((b) ? (char)0x01 : (char)0x00);
return nacAck();
}
uint8_t Serial_LCD::setDisplay(boolean b) {
if (_checkedScreenType==__uVGA__) return 0x15; // exclude VGA
_port->print('Y');
_port->print((char)0x01);
_port->print(b ? (char)0x01 : (char)0x00);
return nacAck();
}
uint8_t Serial_LCD::setContrast(uint8_t b) {
if (_checkedScreenType==__uVGA__) return 0x15; // exclude VGA
if (b<=0x0f) {
_port->print('Y');
_port->print((char)0x02);
_port->print(b);
return nacAck();
}
else {
return 0x15;
}
}
uint8_t Serial_LCD::setOrientation(uint8_t b) { // Display Control Functions – 59hex
if (_checkedScreenType==__uVGA__) return 0x15; // exclude VGA
_orientation = b;
_port->print('Y');
_port->print((char)0x04);
_port->print(b); //
return nacAck();
}
uint8_t Serial_LCD::getOrientation() {
return _orientation;
}
uint8_t Serial_LCD::setTouch(boolean b) {
if (_checkedScreenType!=__uLCD__) return 0x15; // only uLCD
if (b) {
_port->print('Y');
_port->print((char)0x05);
_port->print((char)0x00); // enable touch
char c=nacAck();
if (c==0x06) {
_port->print('Y');
_port->print((char)0x05); // full screen active
_port->print((char)0x02);
}
}
else {
_port->print('Y');
_port->print((char)0x05); // disable touch
_port->print((char)0x01);
}
return nacAck();
}
uint8_t Serial_LCD::setVolume(uint8_t percent) { // Set Volume - 76hex
uint8_t b=0x08 + percent;
if (b>0x7f) b=0x7f;
_port->print('v');
_port->print(b);
return nacAck();
}
// Graphics
uint8_t Serial_LCD::circle(uint16_t x1, uint16_t y1, uint16_t radius, uint16_t colour) {
_port->print('C');
_port->printXY(x1);
_port->printXY(y1);
_port->printXY(radius);
_port->print(colour);
return nacAck();
}
uint8_t Serial_LCD::dRectangle(uint16_t x0, uint16_t y0, uint16_t dx, uint16_t dy, uint16_t colour) {
return rectangle(x0, y0, x0+dx-1, y0+dy-1, colour);
}
uint8_t Serial_LCD::rectangle(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint16_t colour) {
_port->print('r');
_port->printXY(x1);
_port->printXY(y1);
_port->printXY(x2);
_port->printXY(y2);
_port->print(colour);
return nacAck();
}
uint8_t Serial_LCD::ellipse(uint16_t x, uint16_t y, uint16_t rx, uint16_t ry, uint16_t colour) {
_port->print('e');
_port->printXY(x);
_port->printXY(y);
_port->printXY(rx);
_port->printXY(ry);
_port->print(colour);
return nacAck();
}
uint8_t Serial_LCD::dLine(uint16_t x0, uint16_t y0, uint16_t dx, uint16_t dy, uint16_t colour) {
return line(x0, y0, x0+dx-1, y0+dy-1, colour);
}
uint8_t Serial_LCD::line(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint16_t colour) {
_port->print('L');
_port->printXY((uint16_t)x1);
_port->printXY((uint16_t)y1);
_port->printXY((uint16_t)x2);
_port->printXY((uint16_t)y2);
_port->print((uint16_t)colour);
return nacAck();
}
// 2011-06-24 release 3 - setBackGroundColour added
uint8_t Serial_LCD::setBackGroundColour(uint16_t colour) {
_port->print('K');
_port->print(colour);
return nacAck();
}
uint8_t Serial_LCD::point(uint16_t x1, uint16_t y1, uint16_t colour) {
_port->print('P');
_port->printXY(x1);
_port->printXY(y1);
_port->print(colour);
return nacAck();
}
uint16_t Serial_LCD::readPixel(uint16_t x1, uint16_t y1) {
_port->print('R');
_port->printXY(x1);
_port->printXY(y1);
while (_port->available()<2);
uint16_t c=0;
c = _port->read() << 8;
c += _port->read();
return c;
}
uint8_t Serial_LCD::copyPaste(uint16_t xs, uint16_t ys, uint16_t xt, uint16_t yt, uint16_t dx, uint16_t dy) {
if ( (xt+dx>maxX()) || (yt+dy>maxY()) ) return 0x15;
_port->print('c');
_port->printXY(xs);
_port->printXY(ys);
_port->printXY(xt);
_port->printXY(yt);
_port->printXY(dx);
_port->printXY(dy);
return nacAck();
}
uint8_t Serial_LCD::triangle(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint16_t x3, uint16_t y3, uint16_t colour) {
boolean b=true;
// Graham Scan + Andrew's Monotone Chain Algorithm
// 1. Sort by ascending x
while (b) { // required x2 < x1 : x3 > x2 : y2 > y1 : y3 > y1
b=false;
if (!b && (x1>x2)) {
_swap(x1, x2);
_swap(y1, y2);
b=true;
}
if (!b && (x2>x3)) {
_swap(x3, x2);
_swap(y3, y2);
b=true;
}
}
// Graham Scan + Andrew's Monotone Chain Algorithm
// 2. Sort by ascending y
while (b) { // required x2 < x1 : x3 > x2 : y2 > y1 : y3 > y1
if (!b && (y1>y2)) {
_swap(x1, x2);
_swap(y1, y2);
b=true;
}
if (!b && (y3>y2)) {
_swap(x3, x2);
_swap(y3, y2);
b=true;
}
}
// Graham Scan + Andrew's Monotone Chain Algorithm
// 3. check counter-clockwise, clockwise, collinear
long l= (x2 - x1)*(y3 - y1) - (y2 - y1)*(x3 - x1);
if (l==0) return line(x1, y1, x3, y3, colour);
if (l>0) {
_swap(x1, x2);
_swap(y1, y2);
}
l= (x2 - x1)*(y3 - y1) - (y2 - y1)*(x3 - x1);
_port->print('G');
_port->printXY(x1);
_port->printXY(y1);
_port->printXY(x2);
_port->printXY(y2);
_port->printXY(x3);
_port->printXY(y3);
_port->print(colour);
return nacAck();
}
uint8_t Serial_LCD::setPenSolid(boolean b) {
// 00hex : All graphics objects are drawn solid
// 01hex : All graphics objects are drawn wire-frame
_port->print('p');
_port->print(b ? (char)0x00 : (char)0x01);
return nacAck();
}
// Text
uint8_t Serial_LCD::setFont(uint8_t b) {
// 00hex : 6x8 (5x7 false) small size font set
// 01hex : 8x8 medium size font set
// 02hex : 8x12 large size font set
// 03hex : 12x16 largest size font set - not on uOLED
if ( b>3 ) b=3;
if ( (b>2) && (_checkedScreenType==__uOLED__) ) b=2;
_port->print('F');
_port->print(b);
_font=b;
switch (b) {
case 0:
_fontX=6;
_fontY=8;
break;
case 1:
_fontX=8;
_fontY=8;
break;
case 2:
_fontX=8;
_fontY=12;
break;
case 3:
_fontX=12;
_fontY=16;
}
return nacAck();
}
uint8_t Serial_LCD::setFontSolid(boolean b) {
// 00hex : Transparent, objects behind text are visible.
// 01hex : Opaque, objects behind text blocked by background.
_port->print('O');
_port->print(b ? (char)0x01 : (char)0x00);
return nacAck();
}
uint8_t Serial_LCD::tText(uint8_t x, uint8_t y, String s, uint16_t colour) {
_port->print('s');
_port->print(x); // in character units
_port->print(y);
_port->print(_font);
_port->print(colour);
_port->print(s);
_port->print((char)0x00);
return nacAck();
}
uint8_t Serial_LCD::gText(uint16_t x, uint16_t y, String s, uint16_t colour, uint8_t ix, uint8_t iy) { // Draw “String” of ASCII Text (graphics format) – 53hex
_port->print('S');
_port->printXY(x); // in graphic units
_port->printXY(y);
_port->print(_font);
_port->print(colour);
_port->print((uint8_t)ix); // multiplier
_port->print((uint8_t)iy);
_port->print(s);
_port->print((char)0x00);
return nacAck();
}
// Touch
// return value
// 0 : No Touch Activity
// 1 : Touch Press
// 2 : Touch Release
// 3 : Touch Moving
uint8_t Serial_LCD::getTouchActivity() {
if (_checkedScreenType!=__uLCD__) return 0x15; // only uLCD
_port->print('o');
_port->print((char)0x04); // state
uint8_t i=0;
delay(10); // delay required by chipKIT
while ((_port->available()) && (i<4)) {
// while (_port->available() != 4);
// while (i < 4) {
_touch_buffer[i]=_port->read();
i++;
}
switch (_touch_buffer[1]) {
case 1:
case 2:
case 3:
return _touch_buffer[1];
default:
return false;
}
}
uint8_t Serial_LCD::getTouchXY(uint16_t &x, uint16_t &y) {
if (_checkedScreenType!=__uLCD__) return 0x15; // only uLCD
_port->print('o');
_port->print((char)0x05); // coordinates
uint8_t i=0;
delay(10); // delay required by chipKIT
while (_port->available() && (i<4)) {
// while (_port->available() != 4);
// while (i < 4) {
_touch_buffer[i]=_port->read();
i++;
}
if (_touch_buffer[0]!=0x15) {
x = (uint16_t)(_touch_buffer[0] << 8) + _touch_buffer[1];
y = (uint16_t)(_touch_buffer[2] << 8) + _touch_buffer[3];
return 0x06;
}
else {
return 0x15;
}
}
uint8_t Serial_LCD::dDetectTouchRegion(uint16_t x0, uint16_t y0, uint16_t dx, uint16_t dy) {
return Serial_LCD::detectTouchRegion(x0, y0, x0+dx-1, y0+dy-1);
}
// filters only events 1=press and 3=move
uint8_t Serial_LCD::detectTouchRegion(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2) {
if (_checkedScreenType!=__uLCD__) return 0x15; // only uLCD
_port->print('u');
_port->printXY(x1);
_port->printXY(y1);
_port->printXY(x2);
_port->printXY(y2);
return nacAck();
}
// Initialise Memory Card - @69hex
// valid for FAT and RAW
// 2.5 SD Memory Card Commands (Low-Level/RAW)
// 2.6 SD Memory Card Commands (FAT16-Level/DOS)
uint8_t Serial_LCD::initSD() {
uint8_t a;
_checkedSD = false;
_checkedRAW = false;
_checkedFAT = false;
// SD card 3000 ms power-up
delay(3000);
_port->print('@');
_port->print('i');
// answer = 210 ms
delay(210);
a = nacAck();
if (a==0x06) {
_checkedSD = true;
// Method 1 - Look for RAW.INI file
// _checkedFAT = true;
// if ( findFile("RAW.INI")==0x06 ) {
// _checkedRAW = true;
// delay(1000);
// }
// Method 2 - Set Address Pointer of Card (RAW) - @41hex
_checkedFAT = true;
_port->print('@');
_port->print('A');
_port->print((uint8_t)0);
_port->print((uint8_t)0);
_port->print((uint8_t)0);
_port->print((uint8_t)0);
delay(10);
if ( nacAck()==0x06 ) _checkedRAW = true;
_port->flush(); // if no RAW, 5 times error message 0x15, only one read
// // Method 3 - specific function
// _port->print('z');
// a = _port->read();
// delay(10);
// if (bitRead(a, 7)) _checkedSD = true; // uSD card present
// if (bitRead(a, 6)) _checkedFAT = true; // FAT partition present
// if (bitRead(a, 5)) _checkedRAW = true; // RAW partition present
//
// // if (bitRead(a, 4)) Serial.print("FAT partition is protected");Serial.print("\n");
// // if (bitRead(a, 3)) Serial.print("New Image format Enabled");Serial.print("\n");
// Back to initial result
a = 0x06;
}
return a;
}
boolean Serial_LCD::checkSD() {
return _checkedSD;
}
boolean Serial_LCD::checkRAW() {
return false;
// write & read on RAW require investigation
// return _checkedRAW;
}
boolean Serial_LCD::checkFAT() {
return _checkedFAT;
}
uint8_t Serial_LCD::protectFAT(boolean b) {
if (_checkedScreenType==__uOLED__) return 0x15; // exclude uOLED
_port->print('Y');
_port->print((char)0x08);
_port->print((b) ? (char)0x01 : (char)0x00);
return nacAck();
}
uint8_t Serial_LCD::checkScreenType() {
return _checkedScreenType;
}
uint8_t Serial_LCD::checkHardwareVersion() {
return _checkedHardwareVersion;
}
uint8_t Serial_LCD::checkSoftwareVersion() {
return _checkedSoftwareVersion;
}
// 2.5 SD Memory Card Commands (Low-Level/RAW)
// Screen Copy-Save to Card (RAW) - @43hex
uint8_t Serial_LCD::saveScreenRAW(uint32_t sector) {
return dSaveScreenRAW(sector, 0, 0, maxX(), maxY());
}
// Screen Copy-Save to Card (RAW) - @43hex
// x1, y1 x2, y2: same coordinates as rectangle
uint8_t Serial_LCD::saveScreenRAW(uint32_t sector, uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2) {
return dSaveScreenRAW(sector, x1, y1, x2-x1+1, y2-y1+1);
}
// x0, y0 and width and height
uint8_t Serial_LCD::dSaveScreenRAW(uint32_t sector, uint16_t x0, uint16_t y0, uint16_t dx, uint16_t dy) {
if ( !_checkedSD ) return 0x15;
if (_checkedScreenType==__uOLED__) return 0x15; // exclude uOLED
// Serial.print("\r\n dSaveScreenRAW \t");
// Serial.print(x1, DEC);
// Serial.print("\t");
// Serial.print(y1, DEC);
// Serial.print("\n");
_port->print('@');
_port->print('C');
_port->printXY((uint16_t)x0);
_port->printXY((uint16_t)y0);
_port->printXY((uint16_t)dx);
_port->printXY((uint16_t)dy);
_port->print((uint8_t)((sector >> 8) & 0x00ff)); // high:
_port->print((uint16_t)(sector & 0xffff)); // mid:low
delay(10);
return nacAck();
}
// Display Object from Card (RAW) - @4Fhex
// x1, y1: left-top coordinates
// no coordinates: 0, 0 for full screen
uint8_t Serial_LCD::readScreenRAW(uint32_t sector, uint16_t x1, uint16_t y1) {
if (_checkedScreenType==__uOLED__) return 0x15; // exclude uOLED
if ( !_checkedSD ) return 0x15;
// Serial.print("\r\n readScreenRAW \t");
// Serial.print(x1, DEC);
// Serial.print("\t");
// Serial.print(y1, DEC);
// Serial.print("\n");
// RAW image new format
_port->print('Y');
_port->print((char)0x06);
_port->print((char)0x00);
nacAck();
_port->print('@');
_port->print('I');
_port->printXY((uint16_t)x1);
_port->printXY((uint16_t)y1);
_port->print((uint8_t)((sector >> 8) & 0x00ff)); // high:
_port->print((uint16_t)(sector & 0xffff)); // mid:low
delay(10);
return nacAck();
}
// 2.6 SD Memory Card Commands (FAT16-Level/DOS)
// Write File to Card (FAT) - @74hex
// default option = 0
uint8_t Serial_LCD::writeStringFile(String filename, String text, uint8_t option) {
String s;
uint8_t a;
uint8_t j;
// Serial.print("\n * Serial_LCD::_checkedSD \t");
// Serial.print(_checkedSD, HEX);
// Serial.print("\n");
if ( !_checkedSD ) return 0x15;
j=text.length() >>4;
// 16-uint8_t blocks
if (j>0) {
_port->print('@');
_port->print('t');
_port->print((char)(0x10 + option)); // hand-shaking
_port->print(filename);
_port->print((char)0x00);
_port->print((uint16_t)0x00);
_port->print((uint16_t)(j <<4));
a=nacAck();
for (uint8_t i=0; i<j; i++) {
s=text.substring(i <<4, (i+1) <<4);
_port->print(s);
a=nacAck();
}
}
// remaining bytes
j=text.length() % 0x10;
if (j > 0) {
_port->print('@');
_port->print('t');
_port->print((uint8_t)(0x00 + option)); // no hand-shaking
_port->print(filename);
_port->print((char)0x00);
_port->print((uint16_t)0x00);
_port->print((uint16_t)(j));
a=nacAck();
s=text.substring(text.length()-j, text.length());
_port->print(s);
a=nacAck();
}
return a;
}
uint8_t Serial_LCD::appendStringFile(String filename, String text) {
return writeStringFile(filename, text, 0x80); // append option
}
// Read File from Card (FAT) - @61hex
//
// filename - The filename of the file to read
// bytes - The number of bytes to get each time (0=all, not a good idea when filesize > 512b)
// cbReadFile - Callback function that is called every time data is received so a parser do its job.
uint8_t Serial_LCD::readTextFile(String filename, uint8_t bytes, void (*cbReadFile)(String text)) {
if ( !_checkedSD ) return 0x15;
_port->print('@');
_port->print('a');
_port->print((char)bytes);
_port->print(filename);
_port->print((char)0x00);
uint8_t i = 0;
char c = 0;
String s = "";
boolean done = false;
uint32_t fileSize = 0x00;
while(!_port->available());
for (uint8_t j=0; j<4; j++) {
fileSize <<= 4;
fileSize |= _port->read();
}
do {
_port->print((char) 0x06);
i = 0;
s = "";
if ( _port->available() ) {
do {
c = _port->read();
if ( (c==0x06) || (fileSize==0) ) {
done = true;
}
else {
s += c;
i++;
fileSize--;
}
}
while ( _port->available() && (i<bytes) && !done);
}
cbReadFile(s);
}
while ( !done );
while (_port->available()) {
_port->read();
};
return c;
}
uint8_t Serial_LCD::readTextFileDelimiter(String filename, char delimiter, void (*cbReadFile)(String text)) {
if ( !_checkedSD ) return 0x15;
_port->print('@');
_port->print('a');
_port->print((char)0x10);
_port->print(filename);
_port->print((char)0x00);
uint8_t i = 0;
char c = 0;
String s = "";
boolean done = false;
boolean up = false;
uint32_t fileSize = 0x00;
while(!_port->available());
for (uint8_t j=0; j<4; j++) {
fileSize <<= 4;
fileSize |= _port->read();
}
do {
_port->print((char) 0x06);
if (up) {
i = 0;
s = "";
up = false;
}
if ( _port->available() ) {
do {
c = _port->read();
if ( (c==0x06) || (fileSize==0) ) {
done = true;
}
else if ( c==delimiter ) {
up = true;
}
else {
s += c;
i++;
fileSize--;
}
}
while ( _port->available() && (i<128) && !up && !done);
}
if (up) cbReadFile(s);
}
while ( !done );
while (_port->available()) {
_port->read();
};
return c;
}
uint8_t Serial_LCD::openTextFileDelimiter(String filename, char delimeter) {
if ( !_checkedSD ) return 0x15;
_delimeter = delimeter;
_fileSize = 0;
_port->print('@');
_port->print('a');
_port->print((char)0x10);
_port->print(filename);
_port->print((char)0x00);
delay(100);
while(!_port->available());
for (uint8_t j=0; j<4; j++) {
_fileSize <<= 4;
_fileSize |= _port->read();
}
return 0x06;
}
boolean Serial_LCD::nextTextFileDelimiter(String * result) { // false = end
uint8_t i = 0;
char c = 0;
String s = "";
boolean done = false;
boolean up = false;
delay(10);
do {
if ( _port->available()==0 ) _port->print((char)0x06);
while (!_port->available());
do {
delay(10);
c = _port->read();
if ( (c==0x06) || (_fileSize==0) ) {
done = true;
}
else if ( c==_delimeter ) {
up = true;
}
else {
if (c>0x1f) s += c;
i++;
_fileSize--;
}
} while ( _port->available() && (i<128) && !up && !done );
} while ( (i<128) && !up && !done );
if ( up || done ) *result = s;
if ( done ) {
delay(10);
while (_port->available()) _port->read();
};
return !done; // return true to continue, false if EOF
}
// Erase file from Card (FAT) - @65hex
uint8_t Serial_LCD::eraseFile(String filename) {
uint8_t a;
if ( !_checkedSD ) return 0x15;
_port->print('@');
_port->print('e');
_port->print(filename);