lcd display error help me

bhavindholu87 commented 5 years ago

panic: runtime error: invalid memory address or nil pointer dereference [signal 0xc0000005 code=0x0 addr=0x0 pc=0x7855fb]

goroutine 1 [running]: github.com/arduino/arduino-cli/legacy/builder.ResolveLibrary(0x118d45a0, 0x1195ca41, 0x5, 0x1195ca41) /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-cli/legacy/builder/resolve_library.go:64 +0x14b github.com/arduino/arduino-cli/legacy/builder.findIncludesUntilDone(0x118d45a0, 0x118f4f00, 0x88ed00, 0x119a2690, 0x11843fa8, 0x11af3600, 0x0) /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-cli/legacy/builder/container_find_includes.go:358 +0x3b6 github.com/arduino/arduino-cli/legacy/builder.(ContainerFindIncludes).Run(0xdebc68, 0x118d45a0, 0xdebc68, 0x0) /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-cli/legacy/builder/container_find_includes.go:152 +0x3e5 github.com/arduino/arduino-cli/legacy/builder.runCommands(0x118d45a0, 0x11865e1c, 0x20, 0x20, 0x409a01, 0x3ffff, 0x0) /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-cli/legacy/builder/builder.go:210 +0xbd github.com/arduino/arduino-cli/legacy/builder.(Builder).Run(0x11871f40, 0x118d45a0, 0xdebbb4, 0x11842c70) /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-cli/legacy/builder/builder.go:117 +0xb9c github.com/arduino/arduino-cli/legacy/builder.RunBuilder(...) /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-cli/legacy/builder/builder.go:226 main.main() /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-builder/main.go:398 +0x6d2 C:\Program Files (x86)\Arduino\arduino-builder returned 2 Error compiling for board Arduino/Genuino Uno.

cmaglie commented 5 years ago

could you post some more information? Like the board you're using, a copy of the sketch, the version of the IDE....

bhavindholu87 commented 5 years ago

Version - 1.8.10 I'm using the arduino UNO I'm work on i2c lcd display 16x2

cmaglie commented 5 years ago

which operating system?
set "Verbose compile" from the preferences and copy&paste the full output.
copy&paste also the sketch

bhavindholu87 commented 5 years ago

this code in coming error:

#include <LiquidCrystal_I2C.h>

#include "Wire.h" // For I2C
#include "LCD.h" // For LCD
#include "LiquidCrystal_I2C.h" // Added library*
//Set the pins on the I2C chip used for LCD connections
//ADDR,EN,R/W,RS,D4,D5,D6,D7
LiquidCrystal_I2C lcd(0x27,2,1,0,4,5,6,7); // 0x27 is the default I2C bus address of the backpack-see article
void setup()
{
   // Set off LCD module
   lcd.begin (16,2); // 16 x 2 LCD module
   lcd.setBacklightPin(3,POSITIVE); // BL, BL_POL
   lcd.setBacklight(HIGH);

}
void loop()
{
   lcd.setCursor(5,0);
   lcd.print("Marwadi");}

bhavindholu87 commented 5 years ago

error is


panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xc0000005 code=0x0 addr=0x0 pc=0x7855fb]

goroutine 1 [running]:
github.com/arduino/arduino-cli/legacy/builder.ResolveLibrary(0x11cba5a0, 0x11d513d6, 0x5, 0x11d513d6)
    /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-cli/legacy/builder/resolve_library.go:64 +0x14b
github.com/arduino/arduino-cli/legacy/builder.findIncludesUntilDone(0x11cba5a0, 0x11cd8680, 0x88ed00, 0x11d7e690, 0x11ec53e0, 0x11ecf400, 0x0)
    /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-cli/legacy/builder/container_find_includes.go:358 +0x3b6
github.com/arduino/arduino-cli/legacy/builder.(*ContainerFindIncludes).Run(0xdebc68, 0x11cba5a0, 0xdebc68, 0x0)
    /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-cli/legacy/builder/container_find_includes.go:152 +0x3e5
github.com/arduino/arduino-cli/legacy/builder.runCommands(0x11cba5a0, 0x11c55e1c, 0x20, 0x20, 0x409a01, 0x7fff, 0x0)
    /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-cli/legacy/builder/builder.go:210 +0xbd
github.com/arduino/arduino-cli/legacy/builder.(*Builder).Run(0x11c61f40, 0x11cba5a0, 0xdebbb4, 0x11c06c80)
    /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-cli/legacy/builder/builder.go:117 +0xb9c
github.com/arduino/arduino-cli/legacy/builder.RunBuilder(...)
    /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-cli/legacy/builder/builder.go:226
main.main()
    /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-builder/main.go:398 +0x6d2
C:\Program Files (x86)\Arduino\arduino-builder returned 2
Error compiling for board Arduino/Genuino Uno.

cmaglie commented 5 years ago

There is something going on in your particular installation but, to understand what the problem is, I need you to enable the "verbose compile" by flagging the check box in the preferences window as in the following image:

After doing so, please, verify again the sketch and copy the output here. The output should be much longer and detailed.

cmaglie commented 4 years ago

@bhavindholu87 did you solve the issue? may you give the requested information?

cmaglie commented 4 years ago

Fixed by https://github.com/arduino/arduino-cli/pull/477, the patch will be released with IDE 1.8.11

emilijaboba commented 4 years ago

Hi, I have the same problem, but with Nextion display. Also I turned on verbile compiling. Here's the error message:

Arduino: 1.8.10 (Windows 10), Board: "Arduino Due (Programming Port)"

C:\Program Files (x86)\Arduino\arduino-builder -dump-prefs -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -hardware C:\Users\Bazi\AppData\Local\Arduino15\packages -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -tools C:\Users\Bazi\AppData\Local\Arduino15\packages -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries C:\Users\Bazi\Documents\Arduino\libraries -fqbn=arduino:sam:arduino_due_x_dbg -vid-pid=0X2341_0X003D -ide-version=10810 -build-path C:\Users\Bazi\AppData\Local\Temp\arduino_build_829202 -warnings=all -build-cache C:\Users\Bazi\AppData\Local\Temp\arduino_cache_19294 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.bossac.path=C:\Users\Bazi\AppData\Local\Arduino15\packages\arduino\tools\bossac\1.6.1-arduino -prefs=runtime.tools.bossac-1.6.1-arduino.path=C:\Users\Bazi\AppData\Local\Arduino15\packages\arduino\tools\bossac\1.6.1-arduino -prefs=runtime.tools.arm-none-eabi-gcc.path=C:\Users\Bazi\AppData\Local\Arduino15\packages\arduino\tools\arm-none-eabi-gcc\4.8.3-2014q1 -prefs=runtime.tools.arm-none-eabi-gcc-4.8.3-2014q1.path=C:\Users\Bazi\AppData\Local\Arduino15\packages\arduino\tools\arm-none-eabi-gcc\4.8.3-2014q1 -verbose C:\Users\Bazi\Desktop\First_try_with_NEXTION_display_v.1\Nextion_Tutorial2\Nextion_Tutorial2.ino
C:\Program Files (x86)\Arduino\arduino-builder -compile -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -hardware C:\Users\Bazi\AppData\Local\Arduino15\packages -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -tools C:\Users\Bazi\AppData\Local\Arduino15\packages -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries C:\Users\Bazi\Documents\Arduino\libraries -fqbn=arduino:sam:arduino_due_x_dbg -vid-pid=0X2341_0X003D -ide-version=10810 -build-path C:\Users\Bazi\AppData\Local\Temp\arduino_build_829202 -warnings=all -build-cache C:\Users\Bazi\AppData\Local\Temp\arduino_cache_19294 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.bossac.path=C:\Users\Bazi\AppData\Local\Arduino15\packages\arduino\tools\bossac\1.6.1-arduino -prefs=runtime.tools.bossac-1.6.1-arduino.path=C:\Users\Bazi\AppData\Local\Arduino15\packages\arduino\tools\bossac\1.6.1-arduino -prefs=runtime.tools.arm-none-eabi-gcc.path=C:\Users\Bazi\AppData\Local\Arduino15\packages\arduino\tools\arm-none-eabi-gcc\4.8.3-2014q1 -prefs=runtime.tools.arm-none-eabi-gcc-4.8.3-2014q1.path=C:\Users\Bazi\AppData\Local\Arduino15\packages\arduino\tools\arm-none-eabi-gcc\4.8.3-2014q1 -verbose C:\Users\Bazi\Desktop\First_try_with_NEXTION_display_v.1\Nextion_Tutorial2\Nextion_Tutorial2.ino
Using board 'arduino_due_x_dbg' from platform in folder: C:\Users\Bazi\AppData\Local\Arduino15\packages\arduino\hardware\sam\1.6.12
Using core 'arduino' from platform in folder: C:\Users\Bazi\AppData\Local\Arduino15\packages\arduino\hardware\sam\1.6.12
Detecting libraries used...
"C:\\Users\\Bazi\\AppData\\Local\\Arduino15\\packages\\arduino\\tools\\arm-none-eabi-gcc\\4.8.3-2014q1/bin/arm-none-eabi-g++" -c -g -Os -w -std=gnu++11 -ffunction-sections -fdata-sections -nostdlib -fno-threadsafe-statics --param max-inline-insns-single=500 -fno-rtti -fno-exceptions -w -x c++ -E -CC -mcpu=cortex-m3 -mthumb -DF_CPU=84000000L -DARDUINO=10810 -DARDUINO_SAM_DUE -DARDUINO_ARCH_SAM -D__SAM3X8E__ -mthumb -DUSB_VID=0x2341 -DUSB_PID=0x003e -DUSBCON "-DUSB_MANUFACTURER=\"Arduino LLC\"" "-DUSB_PRODUCT=\"Arduino Due\"" "-IC:\\Users\\Bazi\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\sam\\1.6.12\\system/libsam" "-IC:\\Users\\Bazi\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\sam\\1.6.12\\system/CMSIS/CMSIS/Include/" "-IC:\\Users\\Bazi\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\sam\\1.6.12\\system/CMSIS/Device/ATMEL/" "-IC:\\Users\\Bazi\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\sam\\1.6.12\\cores\\arduino" "-IC:\\Users\\Bazi\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\sam\\1.6.12\\variants\\arduino_due_x" "C:\\Users\\Bazi\\AppData\\Local\\Temp\\arduino_build_829202\\sketch\\Nextion_Tutorial2.ino.cpp" -o nul
Alternatives for doxygen.h: [ITEADLIB_Arduino_Nextion-master Nextion Nextion]
ResolveLibrary(doxygen.h)
  -> candidates: [ITEADLIB_Arduino_Nextion-master Nextion Nextion]
panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xc0000005 code=0x0 addr=0x0 pc=0x7855fb]

goroutine 1 [running]:
github.com/arduino/arduino-cli/legacy/builder.ResolveLibrary(0x11cc25a0, 0x11f2c0a5, 0x9, 0x11f2c0a5)
    /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-cli/legacy/builder/resolve_library.go:64 +0x14b
github.com/arduino/arduino-cli/legacy/builder.findIncludesUntilDone(0x11cc25a0, 0x11eec0e0, 0x88ed00, 0x11da0690, 0x11c06758, 0x11d14000, 0x0)
    /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-cli/legacy/builder/container_find_includes.go:358 +0x3b6
github.com/arduino/arduino-cli/legacy/builder.(*ContainerFindIncludes).Run(0xdebc68, 0x11cc25a0, 0xdebc68, 0x0)
    /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-cli/legacy/builder/container_find_includes.go:152 +0x3e5
github.com/arduino/arduino-cli/legacy/builder.runCommands(0x11cc25a0, 0x11c3de1c, 0x20, 0x20, 0x409a01, 0x3fff, 0x0)
    /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-cli/legacy/builder/builder.go:210 +0xbd
github.com/arduino/arduino-cli/legacy/builder.(*Builder).Run(0x11c65f40, 0x11cc25a0, 0xdebbb4, 0x11c06c98)
    /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-cli/legacy/builder/builder.go:117 +0xb9c
github.com/arduino/arduino-cli/legacy/builder.RunBuilder(...)
    /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-cli/legacy/builder/builder.go:226
main.main()
    /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-builder/main.go:398 +0x6d2
C:\Program Files (x86)\Arduino\arduino-builder returned 2
Error compiling for board Arduino Due (Programming Port).

Here's code:

#include <NexButton.h>
#include <NexCheckbox.h>
#include <NexConfig.h>
#include <NexCrop.h>
#include <NexDualStateButton.h>
#include <NexGauge.h>
#include <NexGpio.h>
#include <NexHardware.h>
#include <NexHotspot.h>
#include <NexNumber.h>
#include <NexObject.h>
#include <NexPage.h>
#include <NexPicture.h>
#include <NexProgressBar.h>
#include <NexRadio.h>
#include <NexRtc.h>
#include <NexScrolltext.h>
#include <NexSlider.h>
#include <NexText.h>
#include <NexTimer.h>
#include <Nextion.h>
#include <NexTouch.h>
#include <NexUpload.h>
#include <NexVariable.h>
#include <NexWaveform.h>

/*
  This sketch shows examples on how to send data from the Nextion display to arduino, and vice versa.

  I didn't find a reliable way to receive data from the nextion display without using the library
  so I am going to use the official library to receive data, but I am not going to use it to send data to the display
  because it can create problems with touch events when we send data in the loop.
  I think it's easier to send data to the display without the library, anyway.

  Connection with Arduino Uno/Nano:
  +5V = 5V
  TX  = pin 0 (RX)
  RX  = pin 1 (TX)
  GND = GND

  If you are going to use an Arduino Mega, you have to edit everything on this sketch that says "Serial"
  and replace it with "Serial1" (or whatever number you are using). Also define the Serial port on NexConfig.h
  inside the nextion library.

  Nextion library: https://github.com/itead/ITEADLIB_Arduino_Nextion

  This sketch was made for my 2nd video tutorial shown here: https://www.youtube.com/watch?v=mdkUBB60HoI&t=26s

  Made by InterlinkKnight
  Last update: 02/22/2018
*/
// Include the nextion library (the official one) https://github.com/itead/ITEADLIB_Arduino_Nextion
// Make sure you edit the NexConfig.h file on the library folder to set the correct serial port for the display.
// By default it's set to Serial1, which most arduino boards don't have.
// Change "#define nexSerial Serial1" to "#define nexSerial Serial" if you are using arduino uno, nano, etc.

int variable1 = 0;  // Create a variable to have a counter going up by one on each cycle
int counter = 0;  // Create a variable to have a counter for the + and - buttons
int CurrentPage = 0;  // Create a variable to store which page is currently loaded

// Declare objects that we are going to read from the display. This includes buttons, sliders, text boxes, etc:
// Format: <type of object> <object name> = <type of object>(<page id>, <object id>, "<object name>");
/* ***** Types of objects:
   NexButton - Button
   NexDSButton - Dual-state Button
   NexHotspot - Hotspot, that is like an invisible button
   NexCheckbox - Checkbox
   NexRadio - "Radio" checkbox, that it's exactly like the checkbox but with a rounded shape
   NexSlider - Slider
   NexGauge - Gauge
   NexProgressBar - Progress Bar
   NexText - Text box
   NexScrolltext - Scroll text box
   NexNumber - Number box
   NexVariable - Variable inside the nextion display
   NexPage - Page touch event
   NexGpio - To use the Expansion Board add-on for Enhanced Nextion displays
   NexRtc - To use the real time clock for Enhanced Nextion displays
 * *****
*/
NexButton b1 = NexButton(0, 9, "b1");  // Button added
NexButton b0 = NexButton(0, 1, "b0");  // Button added
NexButton b4 = NexButton(0, 11, "b4");  // Button added
NexDSButton bt0 = NexDSButton(0, 8, "bt0");  // Dual state button added
NexSlider h0 = NexSlider(0, 4, "h0");  // Slider added
NexText t5 = NexText(2, 12, "t5");  // Text box added, so we can read it
NexText t6 = NexText(2, 13, "t6");  // Text box added, so we can read it
NexText t7 = NexText(2, 14, "t7");  // Text box added, so we can read it
NexRadio r0 = NexRadio(2, 4, "r0");  // Radio checkbox added
NexRadio r1 = NexRadio(2, 5, "r1");  // Radio checkbox added
NexRadio r2 = NexRadio(2, 6, "r2");  // Radio checkbox added
NexCheckbox c0 = NexCheckbox(2, 3, "c0");  // Checkbox added
NexButton j0 = NexButton(2, 2, "j0");  // Progress bar as a button added, so if we press the progress bar we can create an action
NexButton b21 = NexButton(2, 10, "b21");  // Button added
NexButton b22 = NexButton(2, 16, "b22");  // Button added
NexButton b23 = NexButton(2, 18, "b23");  // Button added
NexButton b24 = NexButton(2, 19, "b24");  // Button added

// Declare pages:
// Sending data to the display to nonexistent objects on the current page creates an error code sent by the display.
// Any error sent by the display creates lag on the arduino loop because arduino tries to read it, thinking it's a touch event.
// So to avoid this, I am only going to send data depending on the page the display is on.
// That's the reason I want the arduino to know which page is loaded on the display.
// To let arduino know what page is currently loaded, we are creating a touch event for each page.
// On the nextion project, each page most send a simulated "Touch Press Event" in the "Preinitialize Event" section so
// we can register that a new page was loaded.
NexPage page0 = NexPage(0, 0, "page0");  // Page added as a touch event
NexPage page1 = NexPage(1, 0, "page1");  // Page added as a touch event
NexPage page2 = NexPage(2, 0, "page2");  // Page added as a touch event

// End of declaring objects

char buffer[100] = {0};  // This is needed only if you are going to receive a text from the display. You can remove it otherwise.
// Further on this sketch I do receive text so that's why I created this buffer.

// Declare touch event objects to the touch event list:
// You just need to add the names of the objects that send a touch event.
// Format: &<object name>,

NexTouch *nex_listen_list[] =
{
  &b1,  // Button added
  &b0,  // Button added
  &b4,  // Button added
  &b21,  // Button added
  &b22,  // Button added
  &b23,  // Button added
  &b24,  // Button added
  &bt0,  // Dual state button added
  &h0,  // Slider added
  &r0,  // Radio checkbox added
  &r1,  // Radio checkbox added
  &r2,  // Radio checkbox added
  &c0,  // Checkbox added
  &j0,  // Progress bar as a button added
  &page0,  // Page added as a touch event
  &page1,  // Page added as a touch event
  &page2,  // Page added as a touch event
  NULL  // String terminated
};  // End of touch event list

////////////////////////// Touch events:
// Each of the following sections are going to run everytime the touch event happens:
// Is going to run the code inside each section only ones for each touch event.

void b1PushCallback(void *ptr)  // Press event for button b1
{
  digitalWrite(13, HIGH);  // Turn ON internal LED
}  // End of press event

void b1PopCallback(void *ptr)  // Release event for button b1
{
  digitalWrite(13, LOW);  // Turn OFF internal LED
}  // End of release event

void b0PushCallback(void *ptr)  // Press event for button b0
{
  counter = counter - 1;  // Subtract 1 to the current value of the counter

  Serial.print("n3.val=");  // This is sent to the nextion display to set what object name (before the dot) and what atribute (after the dot) are you going to change.
  Serial.print(counter);  // This is the value you want to send to that object and atribute mentioned before.
  Serial.write(0xff);  // We always have to send this three lines after each command sent to the nextion display.
  Serial.write(0xff);
  Serial.write(0xff);
}  // End of press event

void b4PushCallback(void *ptr)  // Press event for button b4
{
  counter = counter + 1;  // Add 1 to the current value of the counter

  Serial.print("n3.val=");  // This is sent to the nextion display to set what object name (before the dot) and what atribute (after the dot) are you going to change.
  Serial.print(counter);  // This is the value you want to send to that object and atribute mentioned before.
  Serial.write(0xff);  // We always have to send this three lines after each command sent to the nextion display.
  Serial.write(0xff);
  Serial.write(0xff);
}  // End of press event

void bt0PopCallback(void *ptr)  // Release event for dual state button bt0
{
  uint32_t number5 = 0;  // Create variable to store value we are going to get
  bt0.getValue(&number5);  // Read value of dual state button to know the state (0 or 1)

  if (number5 == 1) { // If dual state button is equal to 1 (meaning is ON)...
    digitalWrite(13, HIGH);  // Turn ON internal LED
  } else { // Since the dual state button is OFF...
    digitalWrite(13, LOW);  // Turn OFF internal LED
  }
}  // End of release event

void h0PopCallback(void *ptr)  // Release event for slider
{
  uint32_t number2 = 0;  // Create variable to store value of slider
  h0.getValue(&number2);  // Read the value of the slider

  // I got a problem where sometimes I received a 0 instead of the correct slider value.
  // To fix this I will put a condition that if I get a 0, I am going to read again the slider to make sure I get the real value.
  // I am going to do this a few times because sometimes it takes a few tries to get the correct value.
  // The problem looks like it have something to do with touch events. Everytime the display sends a touch event,
  // we need to wait that data to finish transmiting before we can get another data from the display (in this case
  // we want the slider position). For this reason it's important to use a high serial baud (ideally 115200)
  // so it doesn't have to wait too long for the touch event to finish sending the data.

  // The "Are you sure is 0?" begins:
  if (number2 == 0) { // If I got a 0, then recheck:
    h0.getValue(&number2);  // Read the value of the slider
  }
  if (number2 == 0) { // If I got a 0, then recheck:
    h0.getValue(&number2);  // Read the value of the slider
  }
  if (number2 == 0) { // If I got a 0, then recheck:
    h0.getValue(&number2);  // Read the value of the slider
  }
  if (number2 == 0) { // If I got a 0, then recheck:
    h0.getValue(&number2);  // Read the value of the slider
  }
  if (number2 == 0) { // If I got a 0, then recheck:
    h0.getValue(&number2);  // Read the value of the slider
  }
  if (number2 == 0) { // If I got a 0, then recheck:
    h0.getValue(&number2);  // Read the value of the slider
  }
  if (number2 == 0) { // If I got a 0, then recheck:
    h0.getValue(&number2);  // Read the value of the slider
  }
  if (number2 == 0) { // If I got a 0, then recheck:
    h0.getValue(&number2);  // Read the value of the slider
  }
  if (number2 == 0) { // If I got a 0, then recheck:
    h0.getValue(&number2);  // Read the value of the slider
  }
  if (number2 == 0) { // If I got a 0, then recheck:
    h0.getValue(&number2);  // Read the value of the slider
  }
  if (number2 == 0) { // If I got a 0, then recheck:
    h0.getValue(&number2);  // Read the value of the slider
  }
  if (number2 == 0) { // If I got a 0, then recheck:
    h0.getValue(&number2);  // Read the value of the slider
  }
  if (number2 == 0) { // If I got a 0, then recheck:
    h0.getValue(&number2);  // Read the value of the slider
  }
  if (number2 == 0) { // If I got a 0, then recheck:
    h0.getValue(&number2);  // Read the value of the slider
  }
  if (number2 == 0) { // If I got a 0, then recheck:
    h0.getValue(&number2);  // Read the value of the slider
  }
  if (number2 == 0) { // If I got a 0, then recheck:
    h0.getValue(&number2);  // Read the value of the slider
  }
  if (number2 == 0) { // If I got a 0, then recheck:
    h0.getValue(&number2);  // Read the value of the slider
  }
  if (number2 == 0) { // If I got a 0, then recheck:
    h0.getValue(&number2);  // Read the value of the slider
  }
  if (number2 == 0) { // If I got a 0, then recheck:
    h0.getValue(&number2);  // Read the value of the slider
  }
  if (number2 == 0) { // If I got a 0, then recheck:
    h0.getValue(&number2);  // Read the value of the slider
  }
  if (number2 == 0) { // If I got a 0, then recheck:
    h0.getValue(&number2);  // Read the value of the slider
  }
  // The "Are you sure is 0?" ended. At this point, if the slider keep showing as 0, then it really is at 0.

  // Now is going to send the value it received by the slider:
  Serial.print("n4.val=");  // This is sent to the nextion display to set what object name (before the dot) and what atribute (after the dot) are you going to change.
  Serial.print(number2);  // This is the value you want to send to that object and atribute mentioned before.
  Serial.write(0xff);  // We always have to send this three lines after each command sent to the nextion display.
  Serial.write(0xff);
  Serial.write(0xff);
}  // End of release event

void r0PushCallback(void *ptr)  // Press event for radio checkbox
{
  Serial.print("n9.val=");  // This is sent to the nextion display to set what object name (before the dot) and what atribute (after the dot) are you going to change.
  Serial.print(1);  // This is the value you want to send to that object and atribute mentioned before.
  Serial.write(0xff);  // We always have to send this three lines after each command sent to the nextion display.
  Serial.write(0xff);
  Serial.write(0xff);
}  // End of press event

void r1PushCallback(void *ptr)  // Press event for radio checkbox
{
  Serial.print("n9.val=");  // This is sent to the nextion display to set what object name (before the dot) and what atribute (after the dot) are you going to change.
  Serial.print(2);  // This is the value you want to send to that object and atribute mentioned before.
  Serial.write(0xff);  // We always have to send this three lines after each command sent to the nextion display.
  Serial.write(0xff);
  Serial.write(0xff);
}  // End of press event

void r2PushCallback(void *ptr)  // Press event for radio checkbox
{
  Serial.print("n9.val=");  // This is sent to the nextion display to set what object name (before the dot) and what atribute (after the dot) are you going to change.
  Serial.print(3);  // This is the value you want to send to that object and atribute mentioned before.
  Serial.write(0xff);  // We always have to send this three lines after each command sent to the nextion display.
  Serial.write(0xff);
  Serial.write(0xff);
}  // End of press event

void c0PushCallback(void *ptr)  // Press event for checkbox
{
  uint32_t number3 = 0;  // Create variable to store the value of the state of the checkbox
  c0.getValue(&number3);  // Read the state of the checkbox
  Serial.print("n1.val=");  // This is sent to the nextion display to set what object name (before the dot) and what atribute (after the dot) are you going to change.
  Serial.print(number3);  // This is the value you want to send to that object and atribute mentioned before.
  Serial.write(0xff);  // We always have to send this three lines after each command sent to the nextion display.
  Serial.write(0xff);
  Serial.write(0xff);
}  // End of press event

void j0PushCallback(void *ptr)  // Press event for progress bar
{
  Serial.print("j0.pco=");  // This is sent to the nextion display to set what object name (before the dot) and what atribute (after the dot) are you going to change.
  Serial.print(63488);  // Code for the color red
  Serial.write(0xff);  // We always have to send this three lines after each command sent to the nextion display.
  Serial.write(0xff);
  Serial.write(0xff);
}  // End of press event

void b21PushCallback(void *ptr)  // Press event for "Home" button on page 2
{
  Serial.print("page 0");  // Sending this it's going to tell the nextion display to go to page 0.
  Serial.write(0xff);  // We always have to send this three lines after each command sent to the nextion display.
  Serial.write(0xff);
  Serial.write(0xff);
}  // End of press event

void b22PushCallback(void *ptr)  // Press event for "Send" button on page 2
{
  memset(buffer, 0, sizeof(buffer));  // Clear the buffer, so we can start using it
  t5.getText(buffer, sizeof(buffer));  // Read the text on the object t5 and store it on the buffer

  // Now is going to send the text we received to object t23:
  Serial.print("t23.txt=");  // This is sent to the nextion display to set what object name (before the dot) and what atribute (after the dot) are you going to change.
  Serial.print("\"");  // Since we are sending text, and not a number, we need to send double quote before and after the actual text.
  Serial.print(buffer);  // This is the text you want to send to that object and atribute mentioned before.
  Serial.print("\"");  // Since we are sending text, and not a number, we need to send double quote before and after the actual text.
  Serial.write(0xff);  // We always have to send this three lines after each command sent to the nextion display.
  Serial.write(0xff);
  Serial.write(0xff);
}  // End of press event

void b23PushCallback(void *ptr)  // Press event for "Send" button on page 2
{
  memset(buffer, 0, sizeof(buffer));  // Clear the buffer, so we can start using it
  t6.getText(buffer, sizeof(buffer));  // Read the text on the object t6 and store it on the buffer

  // Now is going to send the text we received to object t23:
  Serial.print("t23.txt=");  // This is sent to the nextion display to set what object name (before the dot) and what atribute (after the dot) are you going to change.
  Serial.print("\"");  // Since we are sending text, and not a number, we need to send double quote before and after the actual text.
  Serial.print(buffer);  // This is the text you want to send to that object and atribute mentioned before.
  Serial.print("\"");  // Since we are sending text, and not a number, we need to send double quote before and after the actual text.
  Serial.write(0xff);  // We always have to send this three lines after each command sent to the nextion display.
  Serial.write(0xff);
  Serial.write(0xff);
}  // End of press event

void b24PushCallback(void *ptr)  // Press event for "Send" button on page 2
{
  memset(buffer, 0, sizeof(buffer));  // Clear the buffer, so we can start using it
  t7.getText(buffer, sizeof(buffer));  // Read the text on the object t7 and store it on the buffer

  // Now is going to send the text we received to object t23:
  Serial.print("t23.txt=");  // This is sent to the nextion display to set what object name (before the dot) and what atribute (after the dot) are you going to change.
  Serial.print("\"");  // Since we are sending text, and not a number, we need to send double quote before and after the actual text.
  Serial.print(buffer);  // This is the text you want to send to that object and atribute mentioned before.
  Serial.print("\"");  // Since we are sending text, and not a number, we need to send double quote before and after the actual text.
  Serial.write(0xff);  // We always have to send this three lines after each command sent to the nextion display.
  Serial.write(0xff);
  Serial.write(0xff);
}  // End of press event

// Page change event:
void page0PushCallback(void *ptr)  // If page 0 is loaded on the display, the following is going to execute:
{
  CurrentPage = 0;  // Set variable as 0 so from now on arduino knows page 0 is loaded on the display
}  // End of press event

// Page change event:
void page1PushCallback(void *ptr)  // If page 1 is loaded on the display, the following is going to execute:
{
  CurrentPage = 1;  // Set variable as 1 so from now on arduino knows page 1 is loaded on the display
}  // End of press event

// Page change event:
void page2PushCallback(void *ptr)  // If page 2 is loaded on the display, the following is going to execute:
{
  CurrentPage = 2;  // Set variable as 2 so from now on arduino knows page 2 is loaded on the display
}  // End of press event

////////////////////////// End of touch events

void setup() {  // Put your setup code here, to run once:
  Serial.begin(9600);  // Start serial comunication at baud=9600

  // I am going to change the Serial baud to a faster rate.
  // The reason is that the slider have a glitch when we try to read it's value.
  // One way to solve it was to increase the speed of the serial port.
  delay(500);  // This dalay is just in case the nextion display didn't start yet, to be sure it will receive the following command.
  Serial.print("baud=115200");  // Set new baud rate of nextion to 115200, but it's temporal. Next time nextion is power on,
  // it will retore to default baud of 9600.
  // To take effect, make sure to reboot the arduino (reseting arduino is not enough).
  // If you want to change the default baud, send the command as "bauds=115200", instead of "baud=115200".
  // If you change the default baud, everytime the nextion is power ON is going to have that baud rate, and
  // would not be necessery to set the baud on the setup anymore.
  Serial.write(0xff);  // We always have to send this three lines after each command sent to nextion.
  Serial.write(0xff);
  Serial.write(0xff);

  Serial.end();  // End the serial comunication of baud=9600

  Serial.begin(115200);  // Start serial comunication at baud=115200

  // Register the event callback functions of each touch event:
  // You need to register press events and release events seperatly.
  // Format for press events: <object name>.attachPush(<object name>PushCallback);
  // Format for release events: <object name>.attachPop(<object name>PopCallback);
  b1.attachPush(b1PushCallback);  // Button press
  b1.attachPop(b1PopCallback);  // Button release
  b0.attachPush(b0PushCallback);  // Button press
  b4.attachPush(b4PushCallback);  // Button press
  b21.attachPush(b21PushCallback);  // Button press
  b22.attachPush(b22PushCallback);  // Button press
  b23.attachPush(b23PushCallback);  // Button press
  b24.attachPush(b24PushCallback);  // Button press
  bt0.attachPop(bt0PopCallback);  // Dual state button bt0 release
  h0.attachPop(h0PopCallback);  // Slider release
  r0.attachPush(r0PushCallback);  // Radio checkbox press
  r1.attachPush(r1PushCallback);  // Radio checkbox press
  r2.attachPush(r2PushCallback);  // Radio checkbox press
  c0.attachPush(c0PushCallback);  // Radio checkbox press
  j0.attachPush(j0PushCallback);  // Progress bar as a button press
  page0.attachPush(page0PushCallback);  // Page press event
  page1.attachPush(page1PushCallback);  // Page press event
  page2.attachPush(page2PushCallback);  // Page press event

  // End of registering the event callback functions

  pinMode(13, OUTPUT);
}  // End of setup

void loop() {  // Put your main code here, to run repeatedly:
  delay(30);  // This is the only delay on this loop.
  // I put this delay because without it, the timer on the display would stop running.
  // The timer I am talking about is the one called tm0 on page 0 (of my example nextion project).
  // Aparently we shouldn't send data to the display too often.

  // I created the following variable to have a dynamic number to send to the display:
  variable1++;  // Add 1 to the variable1
  if (variable1 > 240) { // If the variable is above 240
    variable1 = 0;  // Set variable to 0 to start over
  }

  // Send variable1 value to the object called n0:
  // This object (n0) exist on every page so at this point we don't need to check which page is loaded on the display.
  Serial.print("n0.val=");  // This is sent to the nextion display to set what object name (before the dot) and what atribute (after the dot) are you going to change.
  Serial.print(variable1);  // This is the value you want to send to that object and atribute mentioned before.
  Serial.write(0xff);  // We always have to send this three lines after each command sent to the nextion display.
  Serial.write(0xff);
  Serial.write(0xff);

  // Send page number to the object called np:
  // This object (np) exist on every page so at this point we don't need to check which page is loaded on the display.
  Serial.print("np.val=");  // This is sent to the nextion display to set what object name (before the dot) and what atribute (after the dot) are you going to change.
  Serial.print(CurrentPage);  // This is the value you want to send to that object and atribute mentioned before.
  Serial.write(0xff);  // We always have to send this three lines after each command sent to the nextion display.
  Serial.write(0xff);
  Serial.write(0xff);

  // Sending data to the display to nonexistent objects on the current page creates an error code sent by the display.
  // Any error sent by the display creates lag on the arduino loop because arduino tries to read it, thinking it's a touch event.
  // So to avoid this, I am only going to send data depending on the page the display is on.
  // That's the reason I want the arduino to know which page is loaded on the display.

  if (CurrentPage == 0) { // If the display is on page 0, do the following:
    // Send a text to the object called t1:
    Serial.print("t1.txt=");  // This is sent to the nextion display to set what object name (before the dot) and what atribute (after the dot) are you going to change.
    Serial.print("\"");  // Since we are sending text, and not a number, we need to send double quote before and after the actual text.
    Serial.print("Hello!");  // This is the text you want to send to that object and atribute mentioned before.
    Serial.print("\"");  // Since we are sending text, and not a number, we need to send double quote before and after the actual text.
    Serial.write(0xff);  // We always have to send this three lines after each command sent to the nextion display.
    Serial.write(0xff);
    Serial.write(0xff);
  }

  if (CurrentPage == 1) { // If the display is on page 1, do the following:
    // Send a new value to the waveform. In this case we are sending the variable1 value that goes from 0 to 240:
    Serial.print("add 2,0,");  // This sends data to the waveform. There are 3 numbers you have to put with a comma
    // between them: [objectID],[Channel],[Value]
    // In this case 2 is the ID of the waveform; 0 is the channel number; and last value is
    // going to be send in the next line:
    Serial.print(variable1);  // This is the value we are going to send for the waveform and channel mentioned previously.
    // Range is from 0 to 255. Going over 255 will show the graphic line going to 0 and continue from there.
    // Each number it's a pixel. This means you can't do waveforms over 255 pixels high. Over that is unusable.
    Serial.write(0xff);  // We always have to send this three lines after each command sent to the nextion display.
    Serial.write(0xff);
    Serial.write(0xff);
  }

  if (CurrentPage == 2) { // If the display is on page 2, do the following:
    // Send variable1 value to the progress bar called j0:
    // If we send a value greater than 100, we are going to receive an error and this cause lag on the arduino loop, so we are
    // going to constrain the value to avoid going over 100:
    int variable2 = constrain(variable1, 0, 100);  // limits value between 0 and 100 to prevent going over this limits

    Serial.print("j0.val=");  // This is sent to the nextion display to set what object name (before the dot) and what atribute (after the dot) are you going to change.
    Serial.print(variable2);  // This is the value you want to send to that object and atribute mentioned before.
    Serial.write(0xff);  // We always have to send this three lines after each command sent to the nextion display.
    Serial.write(0xff);
    Serial.write(0xff);

    // Send variable1 value to the gauge called z0:
    // Range for the gauge is from 0 to 360. Don't send a greater value or the display is going to send an error code and
    // that creates lag on the arduino loop.
    Serial.print("z0.val=");  // This is sent to the nextion display to set what object name (before the dot) and what atribute (after the dot) are you going to change.
    Serial.print(variable1);  // This is the value you want to send to that object and atribute mentioned before.
    Serial.write(0xff);  // We always have to send this three lines after each command sent to the nextion display.
    Serial.write(0xff);
    Serial.write(0xff);
  }

  // We are going to check the list of touch events we enter previously to
  // know if any touch event just happened, and excecute the corresponding instructions:

  nexLoop(nex_listen_list);  // Check for any touch event
}  // End of loop

udinpedia commented 4 years ago

@cmagile I followed your instruction about "verbose compile" and here is the error BTW I had the same problem here, but I use Arduino Nano board

Arduino: 1.8.10 (Windows 10), Board: "Arduino Nano, ATmega328P"

C:\Program Files (x86)\Arduino\arduino-builder -dump-prefs -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries C:\Users\HP\Documents\Arduino\libraries -fqbn=arduino:avr:nano:cpu=atmega328 -vid-pid=1A86_7523 -ide-version=10810 -build-path C:\Users\HP\AppData\Local\Temp\arduino_build_206896 -warnings=none -build-cache C:\Users\HP\AppData\Local\Temp\arduino_cache_463400 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.avr-gcc.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avr-gcc-7.3.0-atmel3.6.1-arduino5.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.arduinoOTA.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.arduinoOTA-1.3.0.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude-6.3.0-arduino17.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -verbose C:\Users\HP\Downloads\Gauss_Meter_Arduino_Code_for_google_drive\Gauss_Meter_Arduino_Code_for_google_drive.ino C:\Program Files (x86)\Arduino\arduino-builder -compile -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries C:\Users\HP\Documents\Arduino\libraries -fqbn=arduino:avr:nano:cpu=atmega328 -vid-pid=1A86_7523 -ide-version=10810 -build-path C:\Users\HP\AppData\Local\Temp\arduino_build_206896 -warnings=none -build-cache C:\Users\HP\AppData\Local\Temp\arduino_cache_463400 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.avr-gcc.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avr-gcc-7.3.0-atmel3.6.1-arduino5.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.arduinoOTA.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.arduinoOTA-1.3.0.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude-6.3.0-arduino17.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -verbose C:\Users\HP\Downloads\Gauss_Meter_Arduino_Code_for_google_drive\Gauss_Meter_Arduino_Code_for_google_drive.ino Using board 'nano' from platform in folder: C:\Program Using core 'arduino' from platform in folder: C:\Program Detecting libraries used... "C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10810 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\eightanaloginputs" "C:\Users\HP\AppData\Local\Temp\arduino_build_206896\sketch\Gauss_Meter_Arduino_Code_for_google_drive.ino.cpp" -o nul Alternatives for Wire.h: [Wire@1.0] ResolveLibrary(Wire.h) -> candidates: [Wire@1.0] "C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10810 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\eightanaloginputs" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\libraries\Wire\src" "C:\Users\HP\AppData\Local\Temp\arduino_build_206896\sketch\Gauss_Meter_Arduino_Code_for_google_drive.ino.cpp" -o nul Alternatives for LCD.h: [fmalpartida-new-liquidcrystal-1c093ac3a691 NewLiquidCrystal_lib] ResolveLibrary(LCD.h) -> candidates: [fmalpartida-new-liquidcrystal-1c093ac3a691 NewLiquidCrystal_lib] panic: runtime error: invalid memory address or nil pointer dereference [signal 0xc0000005 code=0x0 addr=0x0 pc=0x7855fb]

goroutine 1 [running]: github.com/arduino/arduino-cli/legacy/builder.ResolveLibrary(0x11cc05a0, 0x11ffc55f, 0x5, 0x11ffc55f) /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-cli/legacy/builder/resolve_library.go:64 +0x14b github.com/arduino/arduino-cli/legacy/builder.findIncludesUntilDone(0x11cc05a0, 0x11ef3440, 0x88ed00, 0x11d86690, 0x12031128, 0x11ed3700, 0x0) /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-cli/legacy/builder/container_find_includes.go:358 +0x3b6 github.com/arduino/arduino-cli/legacy/builder.(ContainerFindIncludes).Run(0xdebc68, 0x11cc05a0, 0xdebc68, 0x0) /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-cli/legacy/builder/container_find_includes.go:152 +0x3e5 github.com/arduino/arduino-cli/legacy/builder.runCommands(0x11cc05a0, 0x11c5be1c, 0x20, 0x20, 0x409a01, 0x7fff, 0x0) /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-cli/legacy/builder/builder.go:210 +0xbd github.com/arduino/arduino-cli/legacy/builder.(Builder).Run(0x11c63f40, 0x11cc05a0, 0xdebbb4, 0x11c06c98) /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-cli/legacy/builder/builder.go:117 +0xb9c github.com/arduino/arduino-cli/legacy/builder.RunBuilder(...) /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-cli/legacy/builder/builder.go:226 main.main() /home/jenkins/workspace/arduino-builder-all-cross-cli-inception/src/github.com/arduino/arduino-builder/main.go:398 +0x6d2 C:\Program Files (x86)\Arduino\arduino-builder returned 2 Error compiling for board Arduino Nano. Invalid library found in C:\Users\HP\Documents\Arduino\libraries\gauss_meter_II: no headers files (.h) found in C:\Users\HP\Documents\Arduino\libraries\gauss_meter_II Invalid library found in C:\Users\HP\Documents\Arduino\libraries\LCD: no headers files (.h) found in C:\Users\HP\Documents\Arduino\libraries\LCD Invalid library found in C:\Users\HP\Documents\Arduino\libraries\gauss_meter_II: no headers files (.h) found in C:\Users\HP\Documents\Arduino\libraries\gauss_meter_II Invalid library found in C:\Users\HP\Documents\Arduino\libraries\LCD: no headers files (.h) found in C:\Users\HP\Documents\Arduino\libraries\LCD

arduino / Arduino

lcd display error help me #9242