Hello, I wanted to ask you something. I'm testing a nano, everything is going well, my code works correctly, it responds correctly. 5 minutes later, I decide to expand the code and see that the nano keeps doing the same as before. I did several checks and indeed it was not loading the new code. The IDE program recognizes the USB, updates the information, the nano's LEDs blink while I load the code... apparently everything is fine. But the code is not overwritten. Other nanos did work correctly afterwards. Did my board get damaged? What could be happening? Thanks in advance.
I would say yes but I have had this happen with a few of the china boards. I power them down let them cool down (I use a quick blast of Freezeit) and try again, they usually keep on going. I think it is a cold solder but I have not had the time to be sure. The code and associated hardware always worked.
If you enable Show verbose output during upload and Verify code after upload, you can see what happens and if the upload succeeded.
You can post the output here; please do not forget to use code tags.
Thank you for the suggestions on troubleshooting the issue with my Arduino upload. As requested, I've enabled the option to verify the compilation after upload, but unfortunately, the problem persists. Here's the error message I received post-upload verification:
avrdude: Version 6.3-20190619
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2014 Joerg Wunsch
System wide configuration file is "C:\Users\Angel\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino17/etc/avrdude.conf"
Using Port : COM7
Using Programmer : arduino
Overriding Baud Rate : 115200
AVR Part : ATmega328P
Chip Erase delay : 9000 us
PAGEL : PD7
BS2 : PC2
RESET disposition : dedicated
RETRY pulse : SCK
serial program mode : yes
parallel program mode : yes
Timeout : 200
StabDelay : 100
CmdexeDelay : 25
SyncLoops : 32
ByteDelay : 0
PollIndex : 3
PollValue : 0x53
Memory Detail :
Block Poll Page Polled
Memory Type Mode Delay Size Indx Paged Size Size #Pages MinW MaxW ReadBack
----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
eeprom 65 20 4 0 no 1024 4 0 3600 3600 0xff 0xff
flash 65 6 128 0 yes 32768 128 256 4500 4500 0xff 0xff
lfuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
hfuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
efuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
lock 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
calibration 0 0 0 0 no 1 0 0 0 0 0x00 0x00
signature 0 0 0 0 no 3 0 0 0 0 0x00 0x00
Programmer Type : Arduino
Description : Arduino
Hardware Version: 3
Firmware Version: 4.4
Vtarget : 0.3 V
Varef : 0.3 V
Oscillator : 28.800 kHz
SCK period : 3.3 us
avrdude: AVR device initialized and ready to accept instructions
Reading | ################################################## | 100% 0.00s
avrdude: Device signature = 0x1e950f (probably m328p)
avrdude: reading input file "C:\Users\Angel\AppData\Local\Temp\arduino\sketches\75FC951742631C336986D016F7992462/Tercera_2.ino.hex"
avrdude: writing flash (7436 bytes):
Writing | ################################################## | 100% 0.92s
avrdude: 7436 bytes of flash written
avrdude: verifying flash memory against C:\Users\Angel\AppData\Local\Temp\arduino\sketches\75FC951742631C336986D016F7992462/Tercera_2.ino.hex:
avrdude: load data flash data from input file C:\Users\Angel\AppData\Local\Temp\arduino\sketches\75FC951742631C336986D016F7992462/Tercera_2.ino.hex:
avrdude: input file C:\Users\Angel\AppData\Local\Temp\arduino\sketches\75FC951742631C336986D016F7992462/Tercera_2.ino.hex contains 7436 bytes
avrdude: reading on-chip flash data:
Reading | ################################################## | 100% 0.91s
avrdude: verifying ...
avrdude: verification error, first mismatch at byte 0x0000
0x62 != 0x0c
avrdude: verification error; content mismatch
avrdude done. Thank you.
Failed uploading: uploading error: exit status 1
This error suggests a verification failure where the data written to the microcontroller doesn't match the expected output, specifically indicating a mismatch right at the start of the memory.
Following the initial advice, I've checked my connections, tried different USB ports and cables, restarted both my Arduino and the IDE, and looked into potential driver issues, but the issue still stands. I'm hoping this detailed error message can shed some light on what might be causing the verification error during the upload process to my ATmega328P-based board.
Any further insights or suggestions would be greatly appreciated as I'm eager to resolve this issue and proceed with my project.
Thank you!
Following up on my previous message regarding the verification error I encountered when uploading sketches to my Arduino Nano, I have a concern related to my setup that I'd like to discuss. Throughout my attempts to resolve the upload issue, I realized that I had a mini MP3 player module, a matrix keypad, and a small speaker all connected to the Arduino Nano.
Given the nature of the error and the setup, I'm now wondering if uploading the code to the Arduino Nano with these additional components connected could have potentially damaged the board. Is it possible that having these components attached during the upload process might have caused an overload or some sort of electrical interference, leading to permanent damage on the Nano?
I'm particularly concerned about whether this practice could harm the microcontroller or any other part of the board, affecting its ability to function correctly or causing the kind of verification errors I'm experiencing.
Has anyone had a similar experience or can offer insight into whether this setup could lead to damaging the Arduino Nano? Would you recommend testing the board in a more isolated setup, without any external components attached, to rule out potential damage?
I appreciate any advice or shared experiences regarding the safe practices for uploading code to Arduino boards with external components connected.
Thank you!
Which pin on each component is connected to which Arduino pin?
This is the code:
#include "SoftwareSerial.h"
#include "DFRobotDFPlayerMini.h"
#include <Keypad.h>
static const uint8_t PIN_MP3_TX = 2;
static const uint8_t PIN_MP3_RX = 3;
SoftwareSerial softwareSerial(PIN_MP3_RX, PIN_MP3_TX);
const int wirePin = 6;
DFRobotDFPlayerMini player;
const byte FILAS = 4;
const byte COLUMNAS = 4;
char teclado[FILAS][COLUMNAS] = {
{'1','2','3','A'},
{'4','5','6','B'},
{'7','8','9','C'},
{'*','0','#','D'}
};
byte pinFilas[FILAS] = {A2, A3, A4, A5};
byte pinColumnas[COLUMNAS] = {11, 12, A0, A1};
Keypad keypad = Keypad(makeKeymap(teclado), pinFilas, pinColumnas, FILAS, COLUMNAS);
String codigoEntrada = "";
unsigned long lastKeyPressTime = 0;
bool firstAsteriskPressed = false;
unsigned long asteriskPressTime = 0;
void setup() {
pinMode(wirePin, INPUT_PULLUP);
Serial.begin(9600);
softwareSerial.begin(9600);
if (player.begin(softwareSerial)) {
Serial.println("OK");
player.volume(30);
} else {
Serial.println("Connecting to DFPlayer Mini failed!");
}
}
void playTrackBasedOnCode() {
if (codigoEntrada == "**") {
player.play(4);
} else if (codigoEntrada == "3") {
player.play(5);
} else if (codigoEntrada == "10") {
player.play(6);
} else if (codigoEntrada == "220") {
player.play(7);
} else if (codigoEntrada == "31") {
player.play(10);
} else if (codigoEntrada == "001101") {
player.play(11);
} else if (codigoEntrada == "C") {
player.play(12);
} else if (codigoEntrada == "4") {
player.play(9);
} else {
player.play(8);
}
codigoEntrada = "";
}
void loop() {
static bool lastButtonState = HIGH;
bool currentButtonState = digitalRead(wirePin);
if (lastButtonState == HIGH && currentButtonState == LOW) {
delay(50);
if (digitalRead(wirePin) == LOW) {
player.play(3);
}
}
lastButtonState = currentButtonState;
char key = keypad.getKey();
if (key != NO_KEY) {
codigoEntrada += key;
lastKeyPressTime = millis();
}
if (millis() - lastKeyPressTime > 1000 && codigoEntrada.length() > 0) {
playTrackBasedOnCode();
}
}
What is the "small speaker" and how is it connected?
DFplayer Mini 3 vatios 8 ohmios. The 8-ohm, 3-watt speaker is properly connected and has worked correctly in previous projects. I don't think that is the issue causing this circumstance. But I'm not sure...
Does the Nano under discussion work satisfactorily with other sketches, such as Blink?
If you have another Nano, does that work with your sketch?
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