Estimates would be so kind with your support to solve this problem that I have.
I tell you about this circuit that I made with arduino nano, it gave me perfectly with the libraries that adafruit fingerprint has, everything has been that I formatted my laptop and reinstalled the arduino program and I wanted to register fingerprints, I get these errors, your support thanks in advance.
What are "these errors"? Perhaps you may be referring to the 90% RAM usage in your screenshot?
Post your code so that others can assist you.
this is the program since i updated it in the same arduino libraries.
#include <Adafruit_Fingerprint.h>
#if (defined(AVR) || defined(ESP8266)) && !defined(AVR_ATmega2560)
// For UNO and others without hardware serial, we must use software serial...
// pin #2 is IN from sensor (GREEN wire)
// pin #3 is OUT from arduino (WHITE wire)
// Set up the serial port to use softwareserial..
SoftwareSerial mySerial(2, 3);
#else
// On Leonardo/M0/etc, others with hardware serial, use hardware serial!
// #0 is green wire, #1 is white
#define mySerial Serial1
#endif
Adafruit_Fingerprint finger = Adafruit_Fingerprint(&mySerial);
uint8_t id;
void setup()
{
Serial.begin(9600);
while (!Serial); // For Yun/Leo/Micro/Zero/...
delay(100);
Serial.println("\n\nAdafruit Fingerprint sensor enrollment");
// set the data rate for the sensor serial port
finger.begin(57600);
if (finger.verifyPassword()) {
Serial.println("Found fingerprint sensor!");
} else {
Serial.println("Did not find fingerprint sensor :(");
while (1) { delay(1); }
}
Serial.println(F("Reading sensor parameters"));
finger.getParameters();
Serial.print(F("Status: 0x")); Serial.println(finger.status_reg, HEX);
Serial.print(F("Sys ID: 0x")); Serial.println(finger.system_id, HEX);
Serial.print(F("Capacity: ")); Serial.println(finger.capacity);
Serial.print(F("Security level: ")); Serial.println(finger.security_level);
Serial.print(F("Device address: ")); Serial.println(finger.device_addr, HEX);
Serial.print(F("Packet len: ")); Serial.println(finger.packet_len);
Serial.print(F("Baud rate: ")); Serial.println(finger.baud_rate);
}
uint8_t readnumber(void) {
uint8_t num = 0;
while (num == 0) {
while (! Serial.available());
num = Serial.parseInt();
}
return num;
}
void loop() // run over and over again
{
Serial.println("Ready to enroll a fingerprint!");
Serial.println("Please type in the ID # (from 1 to 127) you want to save this finger as...");
id = readnumber();
if (id == 0) {// ID #0 not allowed, try again!
return;
}
Serial.print("Enrolling ID #");
Serial.println(id);
while (! getFingerprintEnroll() );
}
uint8_t getFingerprintEnroll() {
int p = -1;
Serial.print("Waiting for valid finger to enroll as #"); Serial.println(id);
while (p != FINGERPRINT_OK) {
p = finger.getImage();
switch (p) {
case FINGERPRINT_OK:
Serial.println("Image taken");
break;
case FINGERPRINT_NOFINGER:
Serial.println(".");
break;
case FINGERPRINT_PACKETRECIEVEERR:
Serial.println("Communication error");
break;
case FINGERPRINT_IMAGEFAIL:
Serial.println("Imaging error");
break;
default:
Serial.println("Unknown error");
break;
}
}
// OK success!
p = finger.image2Tz(1);
switch (p) {
case FINGERPRINT_OK:
Serial.println("Image converted");
break;
case FINGERPRINT_IMAGEMESS:
Serial.println("Image too messy");
return p;
case FINGERPRINT_PACKETRECIEVEERR:
Serial.println("Communication error");
return p;
case FINGERPRINT_FEATUREFAIL:
Serial.println("Could not find fingerprint features");
return p;
case FINGERPRINT_INVALIDIMAGE:
Serial.println("Could not find fingerprint features");
return p;
default:
Serial.println("Unknown error");
return p;
}
Serial.println("Remove finger");
delay(2000);
p = 0;
while (p != FINGERPRINT_NOFINGER) {
p = finger.getImage();
}
Serial.print("ID "); Serial.println(id);
p = -1;
Serial.println("Place same finger again");
while (p != FINGERPRINT_OK) {
p = finger.getImage();
switch (p) {
case FINGERPRINT_OK:
Serial.println("Image taken");
break;
case FINGERPRINT_NOFINGER:
Serial.print(".");
break;
case FINGERPRINT_PACKETRECIEVEERR:
Serial.println("Communication error");
break;
case FINGERPRINT_IMAGEFAIL:
Serial.println("Imaging error");
break;
default:
Serial.println("Unknown error");
break;
}
}
// OK success!
p = finger.image2Tz(2);
switch (p) {
case FINGERPRINT_OK:
Serial.println("Image converted");
break;
case FINGERPRINT_IMAGEMESS:
Serial.println("Image too messy");
return p;
case FINGERPRINT_PACKETRECIEVEERR:
Serial.println("Communication error");
return p;
case FINGERPRINT_FEATUREFAIL:
Serial.println("Could not find fingerprint features");
return p;
case FINGERPRINT_INVALIDIMAGE:
Serial.println("Could not find fingerprint features");
return p;
default:
Serial.println("Unknown error");
return p;
}
// OK converted!
Serial.print("Creating model for #"); Serial.println(id);
p = finger.createModel();
if (p == FINGERPRINT_OK) {
Serial.println("Prints matched!");
} else if (p == FINGERPRINT_PACKETRECIEVEERR) {
Serial.println("Communication error");
return p;
} else if (p == FINGERPRINT_ENROLLMISMATCH) {
Serial.println("Fingerprints did not match");
return p;
} else {
Serial.println("Unknown error");
return p;
}
Serial.print("ID "); Serial.println(id);
p = finger.storeModel(id);
if (p == FINGERPRINT_OK) {
Serial.println("Stored!");
} else if (p == FINGERPRINT_PACKETRECIEVEERR) {
Serial.println("Communication error");
return p;
} else if (p == FINGERPRINT_BADLOCATION) {
Serial.println("Could not store in that location");
return p;
} else if (p == FINGERPRINT_FLASHERR) {
Serial.println("Error writing to flash");
return p;
} else {
Serial.println("Unknown error");
return p;
}
return true;
}
Please edit your post to put the code between code tags - see forum guidelines.
Is the code you posted one of the AdaFruit examples? If not, have you tried the examples that come with the library.
If it is exactly, it is from the same library, I will tell you about the other examples that the library has, if they work, the only thing it does not give me is the fingerprint record, then let's say if it reads the sensor, but as I say, it does not record the fingerprints. memory space to which it should be, as I say, that program has worked for me but before everything was that I formatted my laptop.
First suggestion I would try is to use the F() macro around all the string constants in your print/println.
For example:
Replace with:
Serial.println(F("Unknown error"));
Thst should give you some more RAM back. Maybe enough to remove the warning message and potentially fix the overall issue.
I tell you there I get that it recognized the sensor as it gave me in the example, but when I send a 1 so that I can save the fingerprint, it restarts at the start message.
I looked at the enroll example code for the AdaFruit fingerprint sensor and what you are seeing is correct. It seems that the enroll program simply captures and stores fingerprints.
Good morning dear, yes, as I mentioned there, the sensor already recognizes me with the modification that you indicated, but when I send a 1 to register, it does not allow me to return to the start, as I mentioned before, it gave me perfectly, as you see, my plates that I designed worked for me now nothing, what do you think would have happened.
I'm confused:
I indicate to the last images that I know that I was told to correct the serial print, I modified it to "F" there I lose a little memory, when I give a serial port the sensor already detects me but it does not register my fingerprint
Can you post your current sketch.
#include <Adafruit_Fingerprint.h>
#if (defined(AVR) || defined(ESP8266)) && !defined(AVR_ATmega2560)
// For UNO and others without hardware serial, we must use software serial...
// pin #2 is IN from sensor (GREEN wire)
// pin #3 is OUT from arduino (WHITE wire)
// Set up the serial port to use softwareserial..
SoftwareSerial mySerial(2, 3);
#else
// On Leonardo/M0/etc, others with hardware serial, use hardware serial!
// #0 is green wire, #1 is white
#define mySerial Serial1
#endif
Adafruit_Fingerprint finger = Adafruit_Fingerprint(&mySerial);
uint8_t id;
void setup()
{
Serial.begin(9600);
while (!Serial); // For Yun/Leo/Micro/Zero/...
delay(100);
Serial.println(F("Unknown error"));
// set the data rate for the sensor serial port
finger.begin(57600);
if (finger.verifyPassword()) {
Serial.println("Found fingerprint sensor!");
} else {
Serial.println("Did not find fingerprint sensor :(");
while (1) { delay(1); }
}
Serial.println(F("Reading sensor parameters"));
finger.getParameters();
Serial.print(F("Status: 0x")); Serial.println(finger.status_reg, HEX);
Serial.print(F("Sys ID: 0x")); Serial.println(finger.system_id, HEX);
Serial.print(F("Capacity: ")); Serial.println(finger.capacity);
Serial.print(F("Security level: ")); Serial.println(finger.security_level);
Serial.print(F("Device address: ")); Serial.println(finger.device_addr, HEX);
Serial.print(F("Packet len: ")); Serial.println(finger.packet_len);
Serial.print(F("Baud rate: ")); Serial.println(finger.baud_rate);
}
uint8_t readnumber(void) {
uint8_t num = 0;
while (num == 0) {
while (! Serial.available());
num = Serial.parseInt();
}
return num;
}
void loop() // run over and over again
{
Serial.println("Ready to enroll a fingerprint!");
Serial.println("Please type in the ID # (from 1 to 127) you want to save this finger as...");
id = readnumber();
if (id == 0) {// ID #0 not allowed, try again!
return;
}
Serial.print("Enrolling ID #");
Serial.println(id);
while (! getFingerprintEnroll() );
}
uint8_t getFingerprintEnroll() {
int p = -1;
Serial.print("Waiting for valid finger to enroll as #"); Serial.println(id);
while (p != FINGERPRINT_OK) {
p = finger.getImage();
switch (p) {
case FINGERPRINT_OK:
Serial.println("Image taken");
break;
case FINGERPRINT_NOFINGER:
Serial.println(".");
break;
case FINGERPRINT_PACKETRECIEVEERR:
Serial.println("Communication error");
break;
case FINGERPRINT_IMAGEFAIL:
Serial.println("Imaging error");
break;
default:
Serial.println("Unknown error");
break;
}
}
// OK success!
p = finger.image2Tz(1);
switch (p) {
case FINGERPRINT_OK:
Serial.println("Image converted");
break;
case FINGERPRINT_IMAGEMESS:
Serial.println("Image too messy");
return p;
case FINGERPRINT_PACKETRECIEVEERR:
Serial.println("Communication error");
return p;
case FINGERPRINT_FEATUREFAIL:
Serial.println("Could not find fingerprint features");
return p;
case FINGERPRINT_INVALIDIMAGE:
Serial.println("Could not find fingerprint features");
return p;
default:
Serial.println("Unknown error");
return p;
}
Serial.println("Remove finger");
delay(2000);
p = 0;
while (p != FINGERPRINT_NOFINGER) {
p = finger.getImage();
}
Serial.print("ID "); Serial.println(id);
p = -1;
Serial.println("Place same finger again");
while (p != FINGERPRINT_OK) {
p = finger.getImage();
switch (p) {
case FINGERPRINT_OK:
Serial.println("Image taken");
break;
case FINGERPRINT_NOFINGER:
Serial.print(".");
break;
case FINGERPRINT_PACKETRECIEVEERR:
Serial.println("Communication error");
break;
case FINGERPRINT_IMAGEFAIL:
Serial.println("Imaging error");
break;
default:
Serial.println("Unknown error");
break;
}
}
// OK success!
p = finger.image2Tz(2);
switch (p) {
case FINGERPRINT_OK:
Serial.println("Image converted");
break;
case FINGERPRINT_IMAGEMESS:
Serial.println("Image too messy");
return p;
case FINGERPRINT_PACKETRECIEVEERR:
Serial.println("Communication error");
return p;
case FINGERPRINT_FEATUREFAIL:
Serial.println("Could not find fingerprint features");
return p;
case FINGERPRINT_INVALIDIMAGE:
Serial.println("Could not find fingerprint features");
return p;
default:
Serial.println("Unknown error");
return p;
}
// OK converted!
Serial.print("Creating model for #"); Serial.println(id);
p = finger.createModel();
if (p == FINGERPRINT_OK) {
Serial.println("Prints matched!");
} else if (p == FINGERPRINT_PACKETRECIEVEERR) {
Serial.println("Communication error");
return p;
} else if (p == FINGERPRINT_ENROLLMISMATCH) {
Serial.println("Fingerprints did not match");
return p;
} else {
Serial.println("Unknown error");
return p;
}
Serial.print("ID "); Serial.println(id);
p = finger.storeModel(id);
if (p == FINGERPRINT_OK) {
Serial.println("Stored!");
} else if (p == FINGERPRINT_PACKETRECIEVEERR) {
Serial.println("Communication error");
return p;
} else if (p == FINGERPRINT_BADLOCATION) {
Serial.println("Could not store in that location");
return p;
} else if (p == FINGERPRINT_FLASHERR) {
Serial.println("Error writing to flash");
return p;
} else {
Serial.println("Unknown error");
return p;
}
return true;
}
This may not solve your issue, but I've modified your code the put all the string constants into flash memory. The RAM usage has now dropped from 86% down to 35% when compiled for an Arduino Nano (Mega168).
#include <Adafruit_Fingerprint.h>
#if (defined(AVR) || defined(ESP8266)) && !defined(AVR_ATmega2560)
// For UNO and others without hardware serial, we must use software serial...
// pin #2 is IN from sensor (GREEN wire)
// pin #3 is OUT from arduino (WHITE wire)
// Set up the serial port to use softwareserial..
SoftwareSerial mySerial(2, 3);
#else
// On Leonardo/M0/etc, others with hardware serial, use hardware serial!
// #0 is green wire, #1 is white
#define mySerial Serial1
#endif
Adafruit_Fingerprint finger = Adafruit_Fingerprint(&mySerial);
uint8_t id;
void setup()
{
Serial.begin(9600);
while (!Serial); // For Yun/Leo/Micro/Zero/...
delay(100);
Serial.println(F("Unknown error"));
// set the data rate for the sensor serial port
finger.begin(57600);
if (finger.verifyPassword()) {
Serial.println(F("Found fingerprint sensor!"));
} else {
Serial.println(F("Did not find fingerprint sensor :("));
while (1) {
delay(1);
}
}
Serial.println(F("Reading sensor parameters"));
finger.getParameters();
Serial.print(F("Status: 0x")); Serial.println(finger.status_reg, HEX);
Serial.print(F("Sys ID: 0x")); Serial.println(finger.system_id, HEX);
Serial.print(F("Capacity: ")); Serial.println(finger.capacity);
Serial.print(F("Security level: ")); Serial.println(finger.security_level);
Serial.print(F("Device address: ")); Serial.println(finger.device_addr, HEX);
Serial.print(F("Packet len: ")); Serial.println(finger.packet_len);
Serial.print(F("Baud rate: ")); Serial.println(finger.baud_rate);
}
uint8_t readnumber(void) {
uint8_t num = 0;
while (num == 0) {
while (! Serial.available());
num = Serial.parseInt();
}
return num;
}
void loop() // run over and over again
{
Serial.println(F("Ready to enroll a fingerprint!"));
Serial.println(F("Please type in the ID # (from 1 to 127) you want to save this finger as..."));
id = readnumber();
if (id == 0) {// ID #0 not allowed, try again!
return;
}
Serial.print(F("Enrolling ID #"));
Serial.println(id);
while (! getFingerprintEnroll() );
}
uint8_t getFingerprintEnroll() {
int p = -1;
Serial.print(F("Waiting for valid finger to enroll as #")); Serial.println(id);
while (p != FINGERPRINT_OK) {
p = finger.getImage();
switch (p) {
case FINGERPRINT_OK:
Serial.println(F("Image taken"));
break;
case FINGERPRINT_NOFINGER:
Serial.println(F("."));
break;
case FINGERPRINT_PACKETRECIEVEERR:
Serial.println(F("Communication error"));
break;
case FINGERPRINT_IMAGEFAIL:
Serial.println(F("Imaging error"));
break;
default:
Serial.println(F("Unknown error"));
break;
}
}
// OK success!
p = finger.image2Tz(1);
switch (p) {
case FINGERPRINT_OK:
Serial.println(F("Image converted"));
break;
case FINGERPRINT_IMAGEMESS:
Serial.println(F("Image too messy"));
return p;
case FINGERPRINT_PACKETRECIEVEERR:
Serial.println(F("Communication error"));
return p;
case FINGERPRINT_FEATUREFAIL:
Serial.println(F("Could not find fingerprint features"));
return p;
case FINGERPRINT_INVALIDIMAGE:
Serial.println(F("Could not find fingerprint features"));
return p;
default:
Serial.println(F("Unknown error"));
return p;
}
Serial.println(F("Remove finger"));
delay(2000);
p = 0;
while (p != FINGERPRINT_NOFINGER) {
p = finger.getImage();
}
Serial.print(F("ID ")); Serial.println(id);
p = -1;
Serial.println(F("Place same finger again"));
while (p != FINGERPRINT_OK) {
p = finger.getImage();
switch (p) {
case FINGERPRINT_OK:
Serial.println(F("Image taken"));
break;
case FINGERPRINT_NOFINGER:
Serial.print(F("."));
break;
case FINGERPRINT_PACKETRECIEVEERR:
Serial.println(F("Communication error"));
break;
case FINGERPRINT_IMAGEFAIL:
Serial.println(F("Imaging error"));
break;
default:
Serial.println(F("Unknown error"));
break;
}
}
// OK success!
p = finger.image2Tz(2);
switch (p) {
case FINGERPRINT_OK:
Serial.println(F("Image converted"));
break;
case FINGERPRINT_IMAGEMESS:
Serial.println(F("Image too messy"));
return p;
case FINGERPRINT_PACKETRECIEVEERR:
Serial.println(F("Communication error"));
return p;
case FINGERPRINT_FEATUREFAIL:
Serial.println(F("Could not find fingerprint features"));
return p;
case FINGERPRINT_INVALIDIMAGE:
Serial.println(F("Could not find fingerprint features"));
return p;
default:
Serial.println(F("Unknown error"));
return p;
}
// OK converted!
Serial.print(F("Creating model for #")); Serial.println(id);
p = finger.createModel();
if (p == FINGERPRINT_OK) {
Serial.println(F("Prints matched!"));
} else if (p == FINGERPRINT_PACKETRECIEVEERR) {
Serial.println(F("Communication error"));
return p;
} else if (p == FINGERPRINT_ENROLLMISMATCH) {
Serial.println(F("Fingerprints did not match"));
return p;
} else {
Serial.println(F("Unknown error"));
return p;
}
Serial.print(F("ID ")); Serial.println(id);
p = finger.storeModel(id);
if (p == FINGERPRINT_OK) {
Serial.println(F("Stored!"));
} else if (p == FINGERPRINT_PACKETRECIEVEERR) {
Serial.println(F("Communication error"));
return p;
} else if (p == FINGERPRINT_BADLOCATION) {
Serial.println(F("Could not store in that location"));
return p;
} else if (p == FINGERPRINT_FLASHERR) {
Serial.println(F("Error writing to flash"));
return p;
} else {
Serial.println(F("Unknown error"));
return p;
}
return true;
}What happens when you attempt to register your first fingerprint with ID = 1?
1 Like
brother gave perfectly rather how can I help you how do I contact you
If the code is working for you, then simply mark my code as the solution.
Good luck with your project.
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