Thermal Printer Issue...
Posted: Mon May 08, 2017 2:16 pmSo I'm trying to set-up a wifi thermal printer and want to be able to do a url or a 'form' data entry.
My webserver works and this works as well http://192.168.1.100/?TEXT=123
However I'm getting this error
Here is my code.
I'm not sure if I need the mdns thing (not quite sure what it is, I assume it's an easier way to access the webpage without knowing the ip.
So I am assuming its the thermal printer as when going over 32 characters is usually an automatic crash.
e.g. http://192.168.1.100/?TEXT=123456789012 ... 4567890123
If I turn comment out the printer aspect, it works =/
any ideas how to fix this? I'm not sure if its a buffer issue or something... I was thinking that cutting the input into small chunks and print in chunks might fix this, but not sure how to do it.
Thanks in advance.
My webserver works and this works as well http://192.168.1.100/?TEXT=123
However I'm getting this error
Code: Select all
Soft WDT reset
ctx: cont
sp: 3fff0530 end: 3fff08a0 offset: 01b0
>>>stack>>>
3fff06e0: 00000001 00000028 3fff0760 402076df
3fff06f0: 00000001 3fff07a0 3fff0760 40206a92
3fff0700: 3ffef5e8 0000000a 3ffef5e8 40206abc
3fff0710: 0000001b 00000022 3fff27c6 402083e0
3fff0720: 0000001d 00000021 3ffef5e8 4020415c
3fff0730: 00000002 3ffeecd0 3ffef5e8 40208411
3fff0740: 00000002 3ffeecd0 3ffef5e8 402073d1
3fff0750: 00000002 3ffeecd0 3ffef5e8 4020211d
3fff0760: 00000000 00000000 00000000 00000000
3fff0770: 00000000 00000000 3fff27a4 0000002f
3fff0780: 00000028 3fff07e0 00000000 40207634
3fff0790: 00000002 00000001 3ffeecd0 40202184
3fff07a0: 00000000 00000000 00000000 4010020c
3fff07b0: 00000002 00000001 3fff247c 40208036
3fff07c0: 00000000 00000000 3fff247c 40204152
3fff07d0: 3fff247c 3ffeed10 3fff247c 4020418e
3fff07e0: 00000000 00000000 00000000 40207840
3fff07f0: 3fff247c 3ffeed10 3ffeecd0 40204221
3fff0800: 3fff25a4 0000000f 00000001 402030f8
3fff0810: 00000000 0000002d 0000002d 00000001
3fff0820: 00000002 0000002d 0000000f 3ffef880
3fff0830: 00000000 00000000 3ffeecd0 3ffef878
3fff0840: 00000001 3ffeecf4 3ffeecd0 4020445b
3fff0850: 3ffe87d8 00000000 000003e8 4020247e
3fff0860: 00000000 3fff257c 40208040 4020802c
3fff0870: 3fffdad0 00000000 3ffef870 4020249c
3fff0880: 3fffdad0 00000000 3ffef870 40207e64
3fff0890: feefeffe feefeffe 3ffef880 40100718
<<<stack<<<
ets Jan 8 2013,rst cause:2, boot mode:(1,6)
ets Jan 8 2013,rst cause:4, boot mode:(1,6)
Here is my code.
Code: Select all
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>
#include "Adafruit_Thermal.h"
#include "SoftwareSerial.h"
#define TX_PIN 12 // Arduino transmit BLUE WIRE labeled RX on printer
#define RX_PIN 5 // Arduino receive GREEN WIRE labeled TX on printer
SoftwareSerial mySerial(RX_PIN, TX_PIN); // Declare SoftwareSerial obj first
Adafruit_Thermal printer(&mySerial); // Pass addr to printer constructor
// Fill in your WiFi router SSID and password
const char* ssid = "...........";
const char* password = "..........";
MDNSResponder mdns;
ESP8266WebServer server(80);
const char INDEX_HTML[] =
"<!DOCTYPE HTML>"
"<html>"
"<head>"
"<meta name = \"viewport\" content = \"width = device-width, initial-scale = 1.0, maximum-scale = 1.0, user-scalable=0\">"
"<title>ESP8266 Web Form Demo</title>"
"<style>"
"\"body { background-color: #808080; font-family: Arial, Helvetica, Sans-Serif; Color: #000000; }\""
"</style>"
"</head>"
"<body>"
"<h1>Thermal Printer Type and Print</h1>"
"<FORM action=\"/\" method=\"post\">"
"<P>"
"TEXT<br>"
"<INPUT type=\"textarea\" name=\"TEXT\" value=\"test\">On<BR>"
"<INPUT type=\"submit\" value=\"Send\"> <INPUT type=\"reset\">"
"</P>"
"</FORM>"
"</body>"
"</html>";
void handleRoot()
{
if (server.hasArg("TEXT")) {
handleSubmit();
}
else {
server.send(200, "text/html", INDEX_HTML);
}
}
void returnFail(String msg)
{
server.sendHeader("Connection", "close");
server.sendHeader("Access-Control-Allow-Origin", "*");
server.send(500, "text/plain", msg + "\r\n");
}
void handleSubmit()
{
String TEXTVAL="";
TEXTVAL = server.arg("TEXT");
printer.wake();
printer.setSize('L');
printer.println(TEXTVAL);
Serial.println(TEXTVAL);
delay(3000);
printer.sleep();
server.send(200, "text/html", INDEX_HTML);
}
void handleNotFound()
{
String message = "File Not Found\n\n";
message += "URI: ";
message += server.uri();
message += "\nMethod: ";
message += (server.method() == HTTP_GET)?"GET":"POST";
message += "\nArguments: ";
message += server.args();
message += "\n";
for (uint8_t i=0; i<server.args(); i++){
message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
}
server.send(404, "text/plain", message);
}
void setup(void)
{
Serial.begin(115200);
WiFi.begin(ssid, password);
Serial.println("");
printer.begin();
// Wait for connection
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.print("Connected to ");
Serial.println(ssid);
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
if (mdns.begin("esp8266WebForm", WiFi.localIP())) {
Serial.println("MDNS responder started");
}
server.on("/", handleRoot);
server.onNotFound(handleNotFound);
server.begin();
Serial.print("Connect to http://esp8266WebForm.local or http://");
Serial.println(WiFi.localIP());
printer.feed(1);
printer.sleep();
}
void loop(void)
{
server.handleClient();
}I'm not sure if I need the mdns thing (not quite sure what it is, I assume it's an easier way to access the webpage without knowing the ip.
So I am assuming its the thermal printer as when going over 32 characters is usually an automatic crash.
e.g. http://192.168.1.100/?TEXT=123456789012 ... 4567890123
If I turn comment out the printer aspect, it works =/
any ideas how to fix this? I'm not sure if its a buffer issue or something... I was thinking that cutting the input into small chunks and print in chunks might fix this, but not sure how to do it.
Thanks in advance.