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Comments (45)

brianrho avatar brianrho commented on August 16, 2024

Why did you change it to 496? Does it work with the default 768 bytes buffer?

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brianrho avatar brianrho commented on August 16, 2024

Run the example as it is, change ONLY the pins and disable debug

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MaazSk avatar MaazSk commented on August 16, 2024

I am getting the same error. Running the example code provided in the library

TEMPLATES test
Found fingerprint sensor!
Capacity: 500
Packet length: 128
Enter the template ID # you want to get...
Template 1 loaded
Error receiving packet
Enter the template ID # you want to get...

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MaazSk avatar MaazSk commented on August 16, 2024

It is not working with with the default 768 neither it is working with 496

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brianrho avatar brianrho commented on August 16, 2024

Edit the sketch and add a Serial.println(count) after it prints the error message you're getting. Run it with 768 bytes as usual and let me see

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brianrho avatar brianrho commented on August 16, 2024

Have you tried it? What did you get?

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MaazSk avatar MaazSk commented on August 16, 2024

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MaazSk avatar MaazSk commented on August 16, 2024

Below is the output that I receive when I print count

TEMPLATES test
Found fingerprint sensor!
Capacity: 500
Packet length: 128
Enter the template ID # you want to get...
Template 1 loaded
1
2
3
4
Error receiving packet
Enter the template ID # you want to get...
Template 0 loaded
1
2
3
4
Error receiving packet
Enter the template ID # you want to get...
Template 2 loaded
1
2
3
4
Error receiving packet
Enter the template ID # you want to get...

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brianrho avatar brianrho commented on August 16, 2024

Where did you place the print?

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MaazSk avatar MaazSk commented on August 16, 2024

Below is the code where I have place the print command

while (true) {
        bool ret = finger.readRaw(FPM_OUTPUT_TO_BUFFER, buffer + pos, &read_finished, &readlen);
        if (ret) {

            count++;

            Serial.println(count);   //// Here I am printing

            pos += readlen;

            readlen = buff_sz - pos;

            if (read_finished)

                break;
        }
        else {

            Serial.println("Error receiving packet");

            return 0;
        }
        yield();

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brianrho avatar brianrho commented on August 16, 2024

Change this IF statement at line 305 at FPM.cpp:

  if (len != chunk_sz) {
       FPM_DEBUG_PRINT("Read data failed: ");
       FPM_DEBUG_PRINTLN(len);
       return false;
   }

to:

  if (len != chunk_sz) {
       FPM_DEBUG_PRINT("Read data failed: ");
       FPM_DEBUG_PRINTLN(len);
       Serial.print("Len: "); Serial.println(len);
       return false;
   }

and try again.

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MaazSk avatar MaazSk commented on August 16, 2024

I have done the suggested changes but still I am not able to get the desired output. Below is the message which I receive on the Serial Monitor.

TEMPLATES test
Found fingerprint sensor!
Capacity: 500
Packet length: 128
Enter the template ID # you want to get...
Template 1 loaded
1
2
3
Len: 54
Error receiving packet
Enter the template ID # you want to get...
Template 2 loaded
1
2
3
Len: 54
Error receiving packet
Enter the template ID # you want to get...

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brianrho avatar brianrho commented on August 16, 2024

The changes are to find out what's going on, not to fix it.
What are the current baud rates for Serial and SoftwareSerial? What is the buffer size? And, did this example ever work before with this sensor?

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MaazSk avatar MaazSk commented on August 16, 2024

The baud rate is 9600 for serial and 57600 for software serial buffer size is 768 and tried with 496 also. No, this example did not worked with this sensor

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brianrho avatar brianrho commented on August 16, 2024

Stick with the 768 byte buffer for now, don't want it running out of space. Which buffer size gave the results you sent earlier?

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MaazSk avatar MaazSk commented on August 16, 2024

Okay I will stick to 768 only. Can you please a tell me about which results you are talking about.

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brianrho avatar brianrho commented on August 16, 2024

Just rerun the most recent changes I sent you and post the results

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MaazSk avatar MaazSk commented on August 16, 2024

Okay

TEMPLATES test
Found fingerprint sensor!
Capacity: 500
Packet length: 128
Enter the template ID # you want to get...
Template 1 loaded
1
2
3
4
Len: 54
Error receiving packet
Enter the template ID # you want to get...
Template 0 loaded
1
2
3
4
Len: 54
Error receiving packet
Enter the template ID # you want to get...

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brianrho avatar brianrho commented on August 16, 2024

Okay, comment out that whole IF block and run the sketch again. Paste everything you get especially the size of the templates printed at the end. Find out if its consistent across different finger IDs.

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MaazSk avatar MaazSk commented on August 16, 2024

Okay wait

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MaazSk avatar MaazSk commented on August 16, 2024

This is what I am getting the length is constant

TEMPLATES test
Found fingerprint sensor!
Capacity: 500
Packet length: 128
Enter the template ID # you want to get...
Template 0 loaded
Len: 54
Error receiving packet
Enter the template ID # you want to get...
Template 1 loaded
Len: 54
Error receiving packet
Enter the template ID # you want to get...
Template 2 loaded
Len: 54
Error receiving packet
Enter the template ID # you want to get...
Template 3 loaded
Len: 54
Error receiving packet
Enter the template ID # you want to get...
Template 4 loaded
Len: 54
Error receiving packet
Enter the template ID # you want to get...
Template 5 loaded
Len: 54
Error receiving packet
Enter the template ID # you want to get...
Template 6 loaded
Len: 54
Error receiving packet
Enter the template ID # you want to get...
Template 7 loaded
Len: 54
Error receiving packet
Enter the template ID # you want to get...
Template 8 loaded
Len: 54
Error receiving packet
Enter the template ID # you want to get...
Template 9 loaded
Len: 54
Error receiving packet
Enter the template ID # you want to get...

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brianrho avatar brianrho commented on August 16, 2024

No I said you should comment out the whole IF block that contains that statement. In FPM.cpp

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MaazSk avatar MaazSk commented on August 16, 2024

Ohh okay

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MaazSk avatar MaazSk commented on August 16, 2024

The template size is constant 640

TEMPLATES test
Found fingerprint sensor!
Capacity: 500
Packet length: 128
Enter the template ID # you want to get...
Template 0 loaded
Printing template:
---------------------------------------------
4 11 6B 0 5 63 85 5A 6 7A 3 E7 2D 73 86 4E 
45 AA 47 D8 75 3B 88 BB 43 1A 38 F 66 73 87 4B 
4 A9 45 E0 8D F3 86 C3 5 49 76 17 5E 6C 86 D4 
C4 2C 74 F 71 2C 87 57 7 BA 47 F8 29 12 87 3C 
1 F7 43 0 66 A2 84 50 C8 FA FF E7 8A 22 87 B7 
C2 29 3E 8 AE 7A 87 40 82 FB 45 E8 9A 1B 89 41 
C3 DA 45 F8 EE 8B 88 47 3 CB 45 E0 71 54 88 C1 
2 FA FB 1F EE DB 82 E1 2 FB 79 F8 C1 A4 87 51 
87 CA C9 F8 32 75 87 5B 4A FB 7F F8 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 41 45 78 33 34 34 22 73 13 2F 24 65 
12 24 76 34 34 5 8F 27 82 96 62 71 18 F2 F7 41 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
D 6B 38 52 42 81 EA 91 78 4D 31 A1 DC A1 34 23 
53 C1 8C A1 20 45 4 17 E0 C1 F6 59 31 B0 A9 91 
8A 15 40 80 CC A1 46 5C 11 B0 B8 A0 7C 43 63 71 
11 B0 AF 73 30 35 8D 90 8F 32 31 30 56 B0 A2 6E 
1 21 55 A1 8F 67 11 32 9D A0 DC 44 10 6B 4 A0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 C4 6D 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
--------------------------------------------
640 bytes read.
Template 0 deleted
Enter the template's new ID...
Unknown error
Enter the template ID # you want to get...
Template 2 loaded
Printing template:
---------------------------------------------
4 13 57 0 2D 2 85 84 84 46 FE 7 6A 1A 89 27 
5 BA 4D F8 C2 52 85 89 A A7 74 A0 FD 72 85 8E 
52 CA 74 A0 F5 3A 87 3A CA 77 89 E6 19 9B 84 87 
5A F8 3E C0 31 CB 84 6A 6C F9 7E D9 72 6B 85 5F 
A 3B 47 DA AD F3 86 52 7 67 C5 EE 9A 8A 89 9D 
8 FA FF 27 ED 52 89 AE 86 4B F2 EF AE 73 89 BF 
5 2D F6 EF 1A C 85 66 C5 97 7F FF 32 74 85 61 
85 A9 7F F8 C2 51 87 93 81 2A FE 7 A F2 85 8D 
83 37 F8 7 4A 62 84 7D 4 55 FE EF 2D 2B 84 73 
4B E6 BE E0 62 83 84 6D 8E 37 3F E1 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 43 F4 2 89 32 6F 36 54 CF 77 31 61 
62 78 33 18 87 72 67 34 92 19 91 1F 58 43 5F 67 
49 9F 22 F 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
E 57 41 54 43 45 B3 72 F9 0 44 70 D8 A4 20 37 
34 53 12 71 3A 17 22 51 D0 72 3C 13 1 73 E2 B2 
54 8 63 E1 ED 70 9D 22 0 50 8A 9B 74 1A 1 D5 
88 86 62 2A 10 2 88 61 19 5A 30 65 BB B1 77 1D 
16 C3 AD 73 F 3 61 56 13 A1 B6 1D 4 C5 9C 62 
0 32 68 20 8E A2 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 E 79 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
--------------------------------------------
640 bytes read.
Template 2 deleted
Enter the template's new ID...
Unknown error
Enter the template ID # you want to get...
Invalid template
Enter the template ID # you want to get...
Invalid template
Enter the template ID # you want to get...
Invalid template
Enter the template ID # you want to get...
Template 4 loaded
Printing template:
---------------------------------------------
4 C 49 0 29 13 87 26 82 F6 3 F8 39 B3 84 91 
85 34 FA 7 9D 7B 86 9E 84 45 78 17 AD 33 86 2B 
84 B5 7 E0 AD 33 85 97 85 54 78 30 91 3B 89 2D 
84 F8 43 FF 71 AC 88 AE 81 F8 F5 F 69 73 83 87 
84 54 BE E8 DA 63 83 87 49 98 7E E0 7D A4 86 B1 
8A 78 74 2F C6 34 88 47 C9 88 7F FF BD DC 86 4F 
48 68 BF EE 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 55 6A 14 B6 27 56 51 C6 B8 75 44 FF 
4F F9 B5 35 36 F 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
6 49 6F 20 14 42 95 51 E9 11 41 92 DD 51 EE 0 
44 2B D5 82 BC 8 11 54 E7 41 EE 22 56 E2 9E 82 
8B 6B 4 65 AE 80 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 9F 49 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
--------------------------------------------
640 bytes read.
Template 4 deleted
Enter the template's new ID...
Unknown error

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brianrho avatar brianrho commented on August 16, 2024

Okay, seems so. When it asked for a new ID, what did you enter? Try entering an ID you've never used like 200 or something

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MaazSk avatar MaazSk commented on August 16, 2024

okay

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MaazSk avatar MaazSk commented on August 16, 2024

I am getting the same message

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brianrho avatar brianrho commented on August 16, 2024

Are you sure your sensor is an R551? Not only is the template size different from the 768 expected, but it also seems it doesn't support the DOWNCHAR command which is necessary to upload templates. Do you still have the product link?

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MaazSk avatar MaazSk commented on August 16, 2024

I don't have the product link right now but I am sure it is R551, and yes the template size is different than other sensor and to that which is mentioned in the datasheet I'll just dig in and find the product link and will provide you till tomorrow
Thank You!

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brianrho avatar brianrho commented on August 16, 2024

Sure. You can try a few things later like:

  • Increase the buffer size to 1024 and see if there are any differences

  • Change the value in this line in the uploadModel() function in FPM.cpp:
    buffer[1] = 0x01; to 0x02 and 0x03, see if anything changes.

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MaazSk avatar MaazSk commented on August 16, 2024

Okay I will try and let you know

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MaazSk avatar MaazSk commented on August 16, 2024

If I increase the buffer size then the arduino is not working because I have only 1024 bytes on the arduino uno and I have changed it to 0x01, 0x02, there is no change in the output

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brianrho avatar brianrho commented on August 16, 2024

No the Uno has 2k bytes for RAM. How many bytes does it report are left after compilation?

Also did you try 0x03 like I said?

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MaazSk avatar MaazSk commented on August 16, 2024

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MaazSk avatar MaazSk commented on August 16, 2024

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brianrho avatar brianrho commented on August 16, 2024

The Uno has 2k of SRAM: https://www.arduino.cc/en/tutorial/memory

Place this in the sketch immediately after it prints the Unknown Error in move_template():

Serial.println(p);

I want to know the returned error code.

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MaazSk avatar MaazSk commented on August 16, 2024

This is what I get

Unknown Error
-2

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brianrho avatar brianrho commented on August 16, 2024

Make sure buffer[1] = 0x01 always in uploadModel() in FPM.cpp. Then inside the function, place Serial.prinltln(rc) right inside the first IF block, before the function returns.

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MaazSk avatar MaazSk commented on August 16, 2024

This is the output after the suggested changes

TEMPLATES test
Found fingerprint sensor!
Capacity: 500
Packet length: 128
Enter the template ID # you want to get...
Invalid template
Enter the template ID # you want to get...
Template 2 loaded
Printing template:
---------------------------------------------
4 E 67 0 A6 52 85 DD 8A FA B1 F8 6D 1B 85 7B 
45 97 BF EE 8D 23 86 E3 44 39 76 0 9D 6B 85 75 
84 A9 7F EF AE 7B 88 D8 84 2A B4 E8 E9 A3 89 68 
C4 FB 7B FE 5 84 88 DF 83 B F6 DF 12 7C 86 6E 
2 BC 43 FF 32 84 85 E6 41 FC FB 17 65 9C 88 E7 
C2 DC FF D7 25 12 85 C3 25 EC BE F8 35 A 86 BE 
C AA 7E F8 D9 92 86 CD 87 88 76 10 11 2C 85 78 
82 B6 7F F8 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 63 13 4F 62 85 44 71 F5 45 44 23 A2 
21 23 16 49 42 73 D4 1F 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
A 67 77 2E 37 B2 99 81 7 4 1 B3 EC 91 14 1C 
60 E7 AC A1 EF 70 11 35 43 C0 CD 12 2 50 D5 B0 
A0 1B 5 E1 CA 91 64 1F 13 B2 AC 71 1C F 22 11 
C0 A2 16 22 2C E1 AD A3 70 1B 63 10 BD C0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 33 5F 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
--------------------------------------------
640 bytes read.
Template 2 deleted
Enter the template's new ID...
-2
Unknown error
-2
Enter the template ID # you want to get...

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brianrho avatar brianrho commented on August 16, 2024

Okay, in read_ack_get_response() in FPM.cpp, replace this:

    /* wrong pkt id */
    if (pktid != FPM_ACKPACKET)
         return FPM_READ_ERROR;

with:

/* wrong pkt id */
    if (pktid != FPM_ACKPACKET) {
        Serial.print("PID: "); Serial.println(pktid);
        return FPM_READ_ERROR;
    }

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MaazSk avatar MaazSk commented on August 16, 2024

PID: 1
-2
Unknown Error
-2
This is the output

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brianrho avatar brianrho commented on August 16, 2024

Well, that makes no sense at all. I'm afraid I can't do much more than this without having the sensor myself. And it seems theres isnt a lot more to be done anyways, nor is it worth it, given the disparities between the sensor's actual behaviour and whats described in its "datasheet". You'll have to either leave this functionality or get another module like the FPM10 or R307. I'll add another warning about this module to the readme, a good chunk of the messages here are a result of modules claiming to be the R551.

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MaazSk avatar MaazSk commented on August 16, 2024

Okay, Thank you bro. Can you just explain me how the templates are moved from one ID to another, I will carry on the research and if I find something that is helpful I will post here for sure so that you can make the necessary changes.
Once again thanks a lot.

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brianrho avatar brianrho commented on August 16, 2024

The code is mostly clear I think. After you've downloaded the template to your array, just follow the steps in move_template().

The DOWNCHAR command is first sent to the module to initiate the transfer of the template to the module. As part of the command, you supply the particular buffer 1 or 2, that is the temporary destination. The device must ACK the command (which is what has failed so far) before you can begin the actual transfer of the template with writeRaw(). After which you then store the template with the STORE command, passing in the new ID. The module internally transfers template from the internal buffer to the specified ID.

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MaazSk avatar MaazSk commented on August 16, 2024

Okay Thank You!

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