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/*
24-02-2017 http://nettigo.pl Fixes to get it working on current Arduino IDE based on work:
3-2-2011 Spark Fun Electronics 2011 Nathan Seidle
Not all options are working. For sure works: Hello World, change background black/white,
Dull boy,both barcode examples and bitmap.
To use this example code, attach
Arduino : Printer
D2 : Green wire (Printer TX)
D3 : Yello wire (Printer RX)
VIN (9V wall adapter) : Red wire
GND : Black wires
Open Arduino serial window at 115200bps. Turn on line endings!
The thermal printer ships with default 19200bps baud rate. To discover the baud rate, hold down the feed button, then attach the printer to the Vin pin on the Arduino. This will triger demo mode printing settings and char table.
Power an Arduino using wall adapter, since 0.5A from USB is far not enough. Priter works with voltages from 5V to 9V, https://nettigo.pl/products/zasilacz-9v-2-a will be perfect for powering Arduno and printer.
*/
#include <SoftwareSerial.h>
SoftwareSerial Thermal(2, 3); //Soft RX from printer on D2, soft TX out to printer on D3
#define FALSE 0
#define TRUE 1
int printOnBlack = FALSE;
int printUpSideDown = FALSE;
int ledPin = 13;
int heatTime = 255; //80 is default from page 23 of datasheet. Controls speed of printing and darkness
int heatInterval = 255; //2 is default from page 23 of datasheet. Controls speed of printing and darkness
char printDensity = 15; //Not sure what the defaut is. Testing shows the max helps darken text. From page 23.
char printBreakTime = 15; //Not sure what the defaut is. Testing shows the max helps darken text. From page 23.
void setup() {
pinMode(ledPin, OUTPUT);
Serial.begin(115200); //Use hardware serial for debugging
Thermal.begin(19200); //Setup soft serial for ThermalPrinter control
printOnBlack = FALSE;
printUpSideDown = FALSE;
//Modify the print speed and heat
Thermal.write(27);
Thermal.write(55);
Thermal.write(7); //Default 64 dots = 8*('7'+1)
Thermal.write(heatTime); //Default 80 or 800us
Thermal.write(heatInterval); //Default 2 or 20us
//Modify the print density and timeout
Thermal.write(18);
Thermal.write(35);
int printSetting = (printDensity<<4) | printBreakTime;
Thermal.write(printSetting); //Combination of printDensity and printBreakTime
Serial.println();
Serial.println("Parameters set");
}
void loop() {
char option;
while(1) {
Serial.println();
Serial.println("Thermal Printer Testing");
Serial.println("1) Print Hello World!");
Serial.println("2) Type to print");
Serial.println("3) Dull boy");
Serial.println("4) Printer status");
Serial.println("5) Reverse white/black");
Serial.println("6) Print characters upside down");
Serial.println("7) Adjust heat settings");
Serial.println("8) Adjust print settings");
Serial.println("9) Print factory test page");
Serial.println("a) Print entire character set");
Serial.println("b) Print numberic barcode");
Serial.println("c) Print alpha barcode");
Serial.println("d) Bitmap test");
Serial.print(": ");
while(1) {
while(!Serial.available());
option = Serial.read();
if(isalnum(option)) break;
}
if(option == '1') {
Serial.println("Hello World!");
Thermal.println("Hello World!");
Thermal.println("12345678901234567890123456789012");
Thermal.write(10); //Sends the LF to the printer, advances the paper
Thermal.write(10);
}
else if (option == '2') {
Serial.println("Turn on line endings! Press $ to exit. Tell me what's on your mind.");
//Free mode
while(1) {
while(Serial.available() == 0) ; //Wait for incoming characters
while(Serial.available() > 0) {
option = Serial.read(); //Take a character from serial port and check what it is
if(option == '$')
break; //Break if we see the money
else if(option == 13)
Thermal.write(10); //Line feed on CR
else {
Thermal.write(option); //Push this character to printer
Serial.print(option);
delay(10);
}
}
if(option == '$') break; //Break if we see ctrl+z
}
}
else if (option == '3') {
//The Shining
for(int x = 0 ; x < 15 ; x++)
Thermal.println("All work and no play makes Jack a dull boy");
Thermal.write(10);
Thermal.write(10);
Thermal.write(10);
}
else if(option == '4') {
Serial.println("Printer Status:");
Thermal.write(27); //ESC
Thermal.write(118); //v
while(Thermal.available() < 8) ; //Wait for response
char printerStatus[8];
for(int x = 0 ; x < 8 ; x++) {
printerStatus[x] = Thermal.read();
}
if(printerStatus[0] == 'P') { //Check to make sure the array contains what we expect
if(printerStatus[1] == 1)
Serial.println("Paper detected");
else
Serial.println("No paper!");
Serial.print("System Voltage: ");
Serial.print(printerStatus[3]);
Serial.print(".");
Serial.print(printerStatus[4]);
Serial.println("V");
Serial.print("Head temp: ");
Serial.print(printerStatus[6]);
Serial.print(printerStatus[7]);
Serial.println("C");
}
else
Serial.print("Status Read Error");
}
else if(option == '5') {
//Select background color
Thermal.write(29); //GS-ESC
Thermal.write(66); //B
if(printOnBlack == FALSE) {
printOnBlack = TRUE;
Serial.println("Print on black");
Thermal.write(1); //Prints text on black background
}
else {
printOnBlack = FALSE;
Serial.println("Print on white");
Thermal.write((byte)0); //Prints text on white background
}
}
else if(option == '6') {
//Select text orientation
Thermal.write(27); //ESC
Thermal.write(123); //{
if(printUpSideDown == FALSE) {
printUpSideDown = TRUE;
Serial.println("Print upside down");
Thermal.write(1); //Prints upside down
}
else {
printUpSideDown = FALSE;
Serial.println("Print normal upside");
Thermal.write((byte)0); //Prints normal
}
}
else if(option == '7') {
//Change settings
Serial.println();
Serial.println("Turn on Newline endings!");
char buffer[10];
while(1) {
Serial.print("Current heat time:");
Serial.print(heatTime, DEC);
Serial.print(" New heat time (default is 80):");
read_line(buffer, sizeof(buffer)); //Read user's response
heatTime = atoi(buffer); //Convert response to integer
if(heatTime < 256 && heatTime > 3) break;
}
while(1) {
Serial.print("Current heat interval:");
Serial.print(heatInterval, DEC);
Serial.print(" New heat interval (default is 2):");
read_line(buffer, sizeof(buffer)); //Read user's response
heatInterval = atoi(buffer); //Convert response to integer
if(heatInterval < 256 && heatInterval > 2) break;
}
//Control Parameters
Thermal.write(27);
Thermal.write(55);
Thermal.write(7); //Default 64 dots = 8*('7'+1)
Thermal.write(heatTime); //Default 80 or 800us
Thermal.write(heatInterval); //Default 2 or 20us
Serial.println();
Serial.println("Parameters set");
}
else if (option == '8') {
//Change more settings
Serial.println();
Serial.println("Turn on Newline endings!");
char buffer[10];
while(1) {
Serial.print("Current print density:");
Serial.print(printDensity, DEC);
Serial.print(" New print density (max is 15):");
read_line(buffer, sizeof(buffer)); //Read user's response
printDensity = atoi(buffer); //Convert response to integer
if(printDensity < 16 && printDensity > 0) break;
}
while(1) {
Serial.print("Current print break time:");
Serial.print(printBreakTime, DEC);
Serial.print(" New print break time (max is 15):");
read_line(buffer, sizeof(buffer)); //Read user's response
printBreakTime = atoi(buffer); //Convert response to integer
if(printBreakTime < 16 && printBreakTime > 0) break;
}
int printSetting = printDensity << 4;
printSetting |= printBreakTime;
//Control Parameters
Thermal.write(18); //DC2
Thermal.write(35); //#
Thermal.write(printSetting);
Serial.println();
Serial.println("Parameters set");
}
else if (option == '9') {
//Print test page
Thermal.write(18); //DC2
Thermal.write(84); //T
}
else if (option == 'a') {
//Print the entire character set
for(int x = 0 ; x < 256 ; x++)
Thermal.write(x);
Thermal.write(10);
Thermal.write(10);
}
else if (option == 'b') {
Serial.println("Barcode printing");
//Print barcode example
Thermal.write(29); //GS
Thermal.write(107); //k
Thermal.write((byte)0); //m = 0
Thermal.write('2'); //Data
Thermal.write('9');
Thermal.write('1');
Thermal.write('9');
Thermal.write('3');
Thermal.write('9');
Thermal.write('1');
Thermal.write('9');
Thermal.write('3');
Thermal.write('9');
Thermal.write('1');
Thermal.write('9'); //12 characters
Thermal.write((byte)0); //Terminator
delay(3000); //For some reason we can't immediately have line feeds here
Thermal.write(10); //Paper feed
Thermal.write(10); //Paper feed
}
else if (option == 'c') {
//Print barcode example
Serial.println("Fancy barcode");
Thermal.write(29); //GS
Thermal.write(107); //k
Thermal.write(4); //m = 4, fancy bar code
char * a="NETTIGO.PL";
for (int i=0; i< strlen(a); i++) {
Thermal.write(a[i]);
}
//16 characters
Thermal.write((byte)0); //Terminator
delay(3000); //For some reason we can't immediately have line feeds here
Thermal.write(10); //Paper feed
Thermal.write(10); //Paper feed
}
else if(option == 'd') {
//Bitmap example
Serial.println("Print bitmap image");
Thermal.write(18); //DC2
Thermal.write(86); //V
Thermal.write(50); //nL = 10
Thermal.write((byte)0); //nH = 0
//Now we need 10 rows
for(int y = 0 ; y < 50 ; y++) {
//Now we need 48 bytes total
for(int x = 0 ; x < 48 ; x++)
Thermal.write(0xAA); //0b.1010.1010
}
Thermal.write(10); //Paper feed
Thermal.write(10); //Paper feed
Serial.println("Print bitmap done");
}
else {
Serial.print("Choice = ");
Serial.println(option, DEC);
}
}
}
//Reads a line until the \n enter character is found
uint8_t read_line(char* buffer, uint8_t buffer_length) {
memset(buffer, 0, buffer_length);
while(Serial.available()) Serial.read(); //Clear out any characters that may be sitting in the buffer
uint8_t read_length = 0;
while(read_length < buffer_length - 1) {
while (!Serial.available()); //We've destroyed the standard way Arduino reads characters so this no longer works
uint8_t c = Serial.read();
if(c == 0x08 || c == 0x7f) { //Backspace characters
if(read_length < 1)
continue;
--read_length;
buffer[read_length] = '\0';
Serial.print((char)0x08);
Serial.print(' ');
Serial.print((char)0x08);
continue;
}
Serial.print((char)c);
if(c == '\n' || c == '\r') {
buffer[read_length] = '\0';
break;
}
else {
buffer[read_length] = c;
++read_length;
}
}
return read_length;
}
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