Bad EEPROM dump from ATmega328p using Adafruit 'Arduino as ISP' programmer #990

x0urc3 · 2022-06-12T13:07:23Z

Using the following as a simple test case, avrdude (version 7.0-20220610 (6a8f0d9)) produce a bad EEPROM dump.

#include <avr/io.h>
#include <avr/eeprom.h>

int main(void) {
    uint16_t data=0;

    for (uint16_t i=0; i<1024; i++) { 
        eeprom_write_word((uint16_t *) i, 0xff);
    }

    for (uint16_t i=0; i<512; i+=0x20) {
        eeprom_write_word((uint16_t *) i, data);
        data += 0x11;
    }

    for (uint16_t i=0; i<512; i+=0x20) {
        data = eeprom_read_word((uint16_t *) i);
    }

    return(0);
}

EEPROM address 0x100 suppose to contain 0x88 and this is verified using serial print and avrdude terminal (-t).
Using memory operation (-U) produce a bad EEPROM dump (
bad-dump.hex.gz. The data seems to repeat itself at the 256 boundary i.e. 0x100, 0x200, 0x300. Command used are as follows:

 avrdude -c stk500v1 -p m328p -P /dev/ttyUSB0 -b 19200 -U eeprom:r:dump.hex:i

The text was updated successfully, but these errors were encountered:

x0urc3 · 2022-06-12T13:32:28Z

I inspect ATmega328 EEPROM section in avrdude.conf here and notice that paged=no but page_size=4. Changing page_size=0 or remove the line fix the bad EEPROM dump above.

x0urc3 · 2022-06-12T13:50:59Z

I could also confirm that the configuration for ATmega48/88/168 also have the same offending line but I don't have the physical uC to verify.

stefanrueger · 2022-06-12T23:05:00Z

Maybe try avrdude -c arduinoisp ... not avrdude -c stk500v1 ... if it's an ArduinoISP programmer? AVRDUDE relies on being told the programmer that the PC connects to for working correctly.

If you want to erase EEPROM consider sth like

for(uint16_t i=0; i<1024; i+=2)
    eeprom_update_word((uint16_t *) i, 0xffff);

Your first for loop looks wrong (though it erases EEPROM OK). And note you don't need to erase EEPROM before you write/update it.

x0urc3 · 2022-06-13T00:06:20Z

I disabled EESAVE fuse in my project so EEPROM erase is a precaution. My erase loop looks funky because later I'll be saving 2 data byte in a word since eeprom_read_byte() only use byte-based addressing.

Short update. Switching the programmer to arduinoisp cause the following error

avrdude: Error: Invalid -P value: '/dev/ttyUSB0'
         Use -P usb:bus:device

Since my simple modification above sort out my specific need, I will come back to this issue later.

x0urc3 · 2022-06-13T03:01:47Z

My bad, I did not realize there is a difference between ArduinoISP and 'Arduino as ISP'. I like to clarify that I'm using 'Arduino as ISP' programmer soo avrdude -c stk500v1 ... is correct

mcuee · 2022-06-13T05:40:16Z

My bad, I did not realize there is a difference between ArduinoISP and 'Arduino as ISP'. I like to clarify that I'm using 'Arduino as ISP' programmer soo avrdude -c stk500v1 ... is correct

You may want to try avrdude -c avrisp instead if you use "Arduino as ISP".

Edit: both seem the same for this "Arduino as ISP" use case.

mcuee · 2022-06-13T11:29:31Z

BTW, it seems to me ScratchMonkey (stk500v2) is better than "Arduino as ISP".

This is the testing using ScratchMonkey (stk500v2) and it seems to work fine. So I tend to think avrdude.conf is okay.

PS C:\work\avr\avrdude_test\avrdude-v7.0-windows-x64> cat .\entest.eep
:020000040000FA
:2000000054686520717569636B2062726F776E20666F78206A756D7073206F76657220740E
:200020006865206C617A7920646F670A54686520717569636B2062726F776E20666F78207C
:200040006A756D7073206F76657220746865206C617A7920646F670A5468652071756963FD
:200060006B2062726F776E20666F78206A756D7073206F76657220746865206C617A7920D4
:20008000646F670A54686520717569636B2062726F776E20666F78206A756D7073206F76B5
:2000A000657220746865206C617A7920646F670A54686520717569636B2062726F776E20FE
:2000C000666F78206A756D7073206F76657220746865206C617A7920646F670A54686520C2
:2000E000717569636B2062726F776E20666F78206A756D7073206F76657220746865206C16
:20010000617A7920646F670A54686520717569636B2062726F776E20666F78206A756D7038
:2001200073206F76657220746865206C617A7920646F670A54686520717569636B20627279
:200140006F776E20666F78206A756D7073206F76657220746865206C617A7920646F670A0E
:2001600054686520717569636B2062726F776E20666F78206A756D7073206F7665722074AD
:200180006865206C617A7920646F670A54686520717569636B2062726F776E20666F78201B
:2001A0006A756D7073206F76657220746865206C617A7920646F670A54686520717569639C
:2001C0006B2062726F776E20666F78206A756D7073206F76657220746865206C617A792073
:2001E000646F670A54686520717569636B2062726F776E20666F78206A756D7073206F7654
:00000001FF

PS C:\work\avr\avrdude_test\avrdude-v7.0-windows-x64> ./avrdude -c stk500v2 -P COM3 -p atmega328p -U eeprom:w:entest.eep:i -v

avrdude.exe: Version 7.0
             Copyright (c) Brian Dean, http://www.bdmicro.com/
             Copyright (c) Joerg Wunsch

             System wide configuration file is "C:/work/avr/avrdude_test/avrdude-v7.0-windows-x64/avrdude.conf"

             Using Port                    : COM3
             Using Programmer              : stk500v2
avrdude.exe: stk500v2_getsync(): got response from unknown programmer SCRATCHMONKEY, assuming STK500
             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
             PollIndex                     : 3
             PollValue                     : 0x53
             Memory Detail                 :

                                               Block Poll               Page                       Polled
               Memory Type Alias    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    1      0  4500  4500 0x00 0x00
               hfuse                   0     0     0    0 no          1    1      0  4500  4500 0x00 0x00
               efuse                   0     0     0    0 no          1    1      0  4500  4500 0x00 0x00
               lock                    0     0     0    0 no          1    1      0  4500  4500 0x00 0x00
               calibration             0     0     0    0 no          1    1      0     0     0 0x00 0x00
               signature               0     0     0    0 no          3    1      0     0     0 0x00 0x00

             Programmer Type : STK500V2
             Description     : Atmel STK500 Version 2.x firmware
             Programmer Model: STK500
             Hardware Version: 0
             Firmware Version Master : 2.00
             Topcard         : Unknown
             Vtarget         : 5.0 V
             SCK period      : 8.7 us
             Varef           : 5.0 V
             Oscillator      : Off

avrdude.exe: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.01s

avrdude.exe: Device signature = 0x1e950f (probably m328p)
avrdude.exe: reading input file "entest.eep"
avrdude.exe: writing eeprom (512 bytes):

Writing | ################################################## | 100% 1.27s

avrdude.exe: 512 bytes of eeprom written
avrdude.exe: verifying eeprom memory against entest.eep:

Reading | ################################################## | 100% 1.14s

avrdude.exe: 512 bytes of eeprom verified

avrdude.exe done.  Thank you.

PS C:\work\avr\avrdude_test\avrdude-v7.0-windows-x64> echo "read eeprom 0 0x300" | ./avrdude -c usbasp -p atmega328p -t

avrdude.exe: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.00s

avrdude.exe: Device signature = 0x1e950f (probably m328p)
avrdude> >>> read eeprom 0 0x300

Reading | ################################################## | 100% 0.65s

0000  54 68 65 20 71 75 69 63  6b 20 62 72 6f 77 6e 20  |The quick brown |
0010  66 6f 78 20 6a 75 6d 70  73 20 6f 76 65 72 20 74  |fox jumps over t|
0020  68 65 20 6c 61 7a 79 20  64 6f 67 0a 54 68 65 20  |he lazy dog The |
0030  71 75 69 63 6b 20 62 72  6f 77 6e 20 66 6f 78 20  |quick brown fox |
0040  6a 75 6d 70 73 20 6f 76  65 72 20 74 68 65 20 6c  |jumps over the l|
0050  61 7a 79 20 64 6f 67 0a  54 68 65 20 71 75 69 63  |azy dog The quic|
0060  6b 20 62 72 6f 77 6e 20  66 6f 78 20 6a 75 6d 70  |k brown fox jump|
0070  73 20 6f 76 65 72 20 74  68 65 20 6c 61 7a 79 20  |s over the lazy |
0080  64 6f 67 0a 54 68 65 20  71 75 69 63 6b 20 62 72  |dog The quick br|
0090  6f 77 6e 20 66 6f 78 20  6a 75 6d 70 73 20 6f 76  |own fox jumps ov|
00a0  65 72 20 74 68 65 20 6c  61 7a 79 20 64 6f 67 0a  |er the lazy dog |
00b0  54 68 65 20 71 75 69 63  6b 20 62 72 6f 77 6e 20  |The quick brown |
00c0  66 6f 78 20 6a 75 6d 70  73 20 6f 76 65 72 20 74  |fox jumps over t|
00d0  68 65 20 6c 61 7a 79 20  64 6f 67 0a 54 68 65 20  |he lazy dog The |
00e0  71 75 69 63 6b 20 62 72  6f 77 6e 20 66 6f 78 20  |quick brown fox |
00f0  6a 75 6d 70 73 20 6f 76  65 72 20 74 68 65 20 6c  |jumps over the l|
0100  61 7a 79 20 64 6f 67 0a  54 68 65 20 71 75 69 63  |azy dog The quic|
0110  6b 20 62 72 6f 77 6e 20  66 6f 78 20 6a 75 6d 70  |k brown fox jump|
0120  73 20 6f 76 65 72 20 74  68 65 20 6c 61 7a 79 20  |s over the lazy |
0130  64 6f 67 0a 54 68 65 20  71 75 69 63 6b 20 62 72  |dog The quick br|
0140  6f 77 6e 20 66 6f 78 20  6a 75 6d 70 73 20 6f 76  |own fox jumps ov|
0150  65 72 20 74 68 65 20 6c  61 7a 79 20 64 6f 67 0a  |er the lazy dog |
0160  54 68 65 20 71 75 69 63  6b 20 62 72 6f 77 6e 20  |The quick brown |
0170  66 6f 78 20 6a 75 6d 70  73 20 6f 76 65 72 20 74  |fox jumps over t|
0180  68 65 20 6c 61 7a 79 20  64 6f 67 0a 54 68 65 20  |he lazy dog The |
0190  71 75 69 63 6b 20 62 72  6f 77 6e 20 66 6f 78 20  |quick brown fox |
01a0  6a 75 6d 70 73 20 6f 76  65 72 20 74 68 65 20 6c  |jumps over the l|
01b0  61 7a 79 20 64 6f 67 0a  54 68 65 20 71 75 69 63  |azy dog The quic|
01c0  6b 20 62 72 6f 77 6e 20  66 6f 78 20 6a 75 6d 70  |k brown fox jump|
01d0  73 20 6f 76 65 72 20 74  68 65 20 6c 61 7a 79 20  |s over the lazy |
01e0  64 6f 67 0a 54 68 65 20  71 75 69 63 6b 20 62 72  |dog The quick br|
01f0  6f 77 6e 20 66 6f 78 20  6a 75 6d 70 73 20 6f 76  |own fox jumps ov|
0200  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0210  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0220  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0230  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0240  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0250  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0260  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0270  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0280  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0290  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02a0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02b0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02c0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02d0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02e0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02f0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|

avrdude>
avrdude.exe done.  Thank you.

mcuee · 2022-06-13T12:00:26Z

WIth the same setup (one Arduino Uno clone with m16u2, one Arduino Uno clone with CH340) , somehow I can not get "Arduino as ISP" sketch to work, strange. I have used the "Arduino as ISP" sketch previously.

PS C:\work\avr\avrdude_test\avrdude-v7.0-windows-x64> .\avrdude.exe -p m328p -c avrisp -P COM23 -vv

avrdude.exe: Version 7.0
             Copyright (c) Brian Dean, http://www.bdmicro.com/
             Copyright (c) Joerg Wunsch

             System wide configuration file is "C:/work/avr/avrdude_test/avrdude-v7.0-windows-x64/avrdude.conf"

             Using Port                    : COM23
             Using Programmer              : avrisp
avrdude.exe: ser_recv(): programmer is not responding
avrdude.exe: stk500_recv(): programmer is not responding
avrdude.exe: stk500_getsync() attempt 1 of 10: not in sync: resp=0x70
avrdude.exe: stk500_getsync() attempt 2 of 10: not in sync: resp=0xe0
avrdude.exe: stk500_getsync() attempt 3 of 10: not in sync: resp=0xe0
avrdude.exe: stk500_getsync() attempt 4 of 10: not in sync: resp=0xe0
avrdude.exe: stk500_getsync() attempt 5 of 10: not in sync: resp=0x00
avrdude.exe: stk500_getsync() attempt 6 of 10: not in sync: resp=0xe0
avrdude.exe: stk500_getsync() attempt 7 of 10: not in sync: resp=0xe0
avrdude.exe: stk500_getsync() attempt 8 of 10: not in sync: resp=0xe0
avrdude.exe: stk500_getsync() attempt 9 of 10: not in sync: resp=0x00
avrdude.exe: stk500_getsync() attempt 10 of 10: not in sync: resp=0xe0
avrdude.exe: opening programmer "avrisp" on port "COM23" failed

avrdude.exe done.  Thank you.

mcuee · 2022-06-13T12:33:11Z

Okay I have to reduce the baud rate to 19200 for my setup to work. I can not reproduce the issue (verified with both usbasp and the "Arduino as ISP" itself).

PS C:\work\avr\avrdude_test\avrdude-v7.0-windows-x64> .\avrdude.exe -p m328p -c avrisp -P COM6 -b 19200 -U eeprom:w:entest.eep:i -v

avrdude.exe: Version 7.0
             Copyright (c) Brian Dean, http://www.bdmicro.com/
             Copyright (c) Joerg Wunsch

             System wide configuration file is "C:/work/avr/avrdude_test/avrdude-v7.0-windows-x64/avrdude.conf"

             Using Port                    : COM6
             Using Programmer              : avrisp
             Overriding Baud Rate          : 19200
             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
             PollIndex                     : 3
             PollValue                     : 0x53
             Memory Detail                 :

                                               Block Poll               Page                       Polled
               Memory Type Alias    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    1      0  4500  4500 0x00 0x00
               hfuse                   0     0     0    0 no          1    1      0  4500  4500 0x00 0x00
               efuse                   0     0     0    0 no          1    1      0  4500  4500 0x00 0x00
               lock                    0     0     0    0 no          1    1      0  4500  4500 0x00 0x00
               calibration             0     0     0    0 no          1    1      0     0     0 0x00 0x00
               signature               0     0     0    0 no          3    1      0     0     0 0x00 0x00

             Programmer Type : STK500
             Description     : Atmel AVR ISP
             Hardware Version: 2
             Firmware Version: 1.18
             Topcard         : Unknown
             Vtarget         : 0.0 V
             Varef           : 0.0 V
             Oscillator      : Off
             SCK period      : 0.1 us

avrdude.exe: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.02s

avrdude.exe: Device signature = 0x1e950f (probably m328p)
avrdude.exe: reading input file "entest.eep"
avrdude.exe: writing eeprom (512 bytes):

Writing | ################################################## | 100% 24.89s

avrdude.exe: 512 bytes of eeprom written
avrdude.exe: verifying eeprom memory against entest.eep:

Reading | ################################################## | 100% 1.66s

avrdude.exe: 512 bytes of eeprom verified

avrdude.exe done.  Thank you.

PS C:\work\avr\avrdude_test\avrdude-v7.0-windows-x64> echo "read eeprom 0 0x300" | ./avrdude -c usbasp -p atmega328p -t

avrdude.exe: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.00s

avrdude.exe: Device signature = 0x1e950f (probably m328p)
avrdude> >>> read eeprom 0 0x300

Reading | ################################################## | 100% 0.64s

0000  54 68 65 20 71 75 69 63  6b 20 62 72 6f 77 6e 20  |The quick brown |
0010  66 6f 78 20 6a 75 6d 70  73 20 6f 76 65 72 20 74  |fox jumps over t|
0020  68 65 20 6c 61 7a 79 20  64 6f 67 0a 54 68 65 20  |he lazy dog The |
0030  71 75 69 63 6b 20 62 72  6f 77 6e 20 66 6f 78 20  |quick brown fox |
0040  6a 75 6d 70 73 20 6f 76  65 72 20 74 68 65 20 6c  |jumps over the l|
0050  61 7a 79 20 64 6f 67 0a  54 68 65 20 71 75 69 63  |azy dog The quic|
0060  6b 20 62 72 6f 77 6e 20  66 6f 78 20 6a 75 6d 70  |k brown fox jump|
0070  73 20 6f 76 65 72 20 74  68 65 20 6c 61 7a 79 20  |s over the lazy |
0080  64 6f 67 0a 54 68 65 20  71 75 69 63 6b 20 62 72  |dog The quick br|
0090  6f 77 6e 20 66 6f 78 20  6a 75 6d 70 73 20 6f 76  |own fox jumps ov|
00a0  65 72 20 74 68 65 20 6c  61 7a 79 20 64 6f 67 0a  |er the lazy dog |
00b0  54 68 65 20 71 75 69 63  6b 20 62 72 6f 77 6e 20  |The quick brown |
00c0  66 6f 78 20 6a 75 6d 70  73 20 6f 76 65 72 20 74  |fox jumps over t|
00d0  68 65 20 6c 61 7a 79 20  64 6f 67 0a 54 68 65 20  |he lazy dog The |
00e0  71 75 69 63 6b 20 62 72  6f 77 6e 20 66 6f 78 20  |quick brown fox |
00f0  6a 75 6d 70 73 20 6f 76  65 72 20 74 68 65 20 6c  |jumps over the l|
0100  61 7a 79 20 64 6f 67 0a  54 68 65 20 71 75 69 63  |azy dog The quic|
0110  6b 20 62 72 6f 77 6e 20  66 6f 78 20 6a 75 6d 70  |k brown fox jump|
0120  73 20 6f 76 65 72 20 74  68 65 20 6c 61 7a 79 20  |s over the lazy |
0130  64 6f 67 0a 54 68 65 20  71 75 69 63 6b 20 62 72  |dog The quick br|
0140  6f 77 6e 20 66 6f 78 20  6a 75 6d 70 73 20 6f 76  |own fox jumps ov|
0150  65 72 20 74 68 65 20 6c  61 7a 79 20 64 6f 67 0a  |er the lazy dog |
0160  54 68 65 20 71 75 69 63  6b 20 62 72 6f 77 6e 20  |The quick brown |
0170  66 6f 78 20 6a 75 6d 70  73 20 6f 76 65 72 20 74  |fox jumps over t|
0180  68 65 20 6c 61 7a 79 20  64 6f 67 0a 54 68 65 20  |he lazy dog The |
0190  71 75 69 63 6b 20 62 72  6f 77 6e 20 66 6f 78 20  |quick brown fox |
01a0  6a 75 6d 70 73 20 6f 76  65 72 20 74 68 65 20 6c  |jumps over the l|
01b0  61 7a 79 20 64 6f 67 0a  54 68 65 20 71 75 69 63  |azy dog The quic|
01c0  6b 20 62 72 6f 77 6e 20  66 6f 78 20 6a 75 6d 70  |k brown fox jump|
01d0  73 20 6f 76 65 72 20 74  68 65 20 6c 61 7a 79 20  |s over the lazy |
01e0  64 6f 67 0a 54 68 65 20  71 75 69 63 6b 20 62 72  |dog The quick br|
01f0  6f 77 6e 20 66 6f 78 20  6a 75 6d 70 73 20 6f 76  |own fox jumps ov|
0200  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0210  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0220  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0230  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0240  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0250  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0260  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0270  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0280  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0290  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02a0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02b0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02c0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02d0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02e0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02f0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|

avrdude>
avrdude.exe done.  Thank you.

PS C:\work\avr\avrdude_test\avrdude-v7.0-windows-x64> echo "read eeprom 0 0x300" | ./avrdude -c avrisp -P COM6 -b 19200 -p atmega328p -t

avrdude.exe: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.02s

avrdude.exe: Device signature = 0x1e950f (probably m328p)
avrdude> >>> read eeprom 0 0x300

Reading | ################################################## | 100% 5.16s

0000  54 68 65 20 71 75 69 63  6b 20 62 72 6f 77 6e 20  |The quick brown |
0010  66 6f 78 20 6a 75 6d 70  73 20 6f 76 65 72 20 74  |fox jumps over t|
0020  68 65 20 6c 61 7a 79 20  64 6f 67 0a 54 68 65 20  |he lazy dog The |
0030  71 75 69 63 6b 20 62 72  6f 77 6e 20 66 6f 78 20  |quick brown fox |
0040  6a 75 6d 70 73 20 6f 76  65 72 20 74 68 65 20 6c  |jumps over the l|
0050  61 7a 79 20 64 6f 67 0a  54 68 65 20 71 75 69 63  |azy dog The quic|
0060  6b 20 62 72 6f 77 6e 20  66 6f 78 20 6a 75 6d 70  |k brown fox jump|
0070  73 20 6f 76 65 72 20 74  68 65 20 6c 61 7a 79 20  |s over the lazy |
0080  64 6f 67 0a 54 68 65 20  71 75 69 63 6b 20 62 72  |dog The quick br|
0090  6f 77 6e 20 66 6f 78 20  6a 75 6d 70 73 20 6f 76  |own fox jumps ov|
00a0  65 72 20 74 68 65 20 6c  61 7a 79 20 64 6f 67 0a  |er the lazy dog |
00b0  54 68 65 20 71 75 69 63  6b 20 62 72 6f 77 6e 20  |The quick brown |
00c0  66 6f 78 20 6a 75 6d 70  73 20 6f 76 65 72 20 74  |fox jumps over t|
00d0  68 65 20 6c 61 7a 79 20  64 6f 67 0a 54 68 65 20  |he lazy dog The |
00e0  71 75 69 63 6b 20 62 72  6f 77 6e 20 66 6f 78 20  |quick brown fox |
00f0  6a 75 6d 70 73 20 6f 76  65 72 20 74 68 65 20 6c  |jumps over the l|
0100  61 7a 79 20 64 6f 67 0a  54 68 65 20 71 75 69 63  |azy dog The quic|
0110  6b 20 62 72 6f 77 6e 20  66 6f 78 20 6a 75 6d 70  |k brown fox jump|
0120  73 20 6f 76 65 72 20 74  68 65 20 6c 61 7a 79 20  |s over the lazy |
0130  64 6f 67 0a 54 68 65 20  71 75 69 63 6b 20 62 72  |dog The quick br|
0140  6f 77 6e 20 66 6f 78 20  6a 75 6d 70 73 20 6f 76  |own fox jumps ov|
0150  65 72 20 74 68 65 20 6c  61 7a 79 20 64 6f 67 0a  |er the lazy dog |
0160  54 68 65 20 71 75 69 63  6b 20 62 72 6f 77 6e 20  |The quick brown |
0170  66 6f 78 20 6a 75 6d 70  73 20 6f 76 65 72 20 74  |fox jumps over t|
0180  68 65 20 6c 61 7a 79 20  64 6f 67 0a 54 68 65 20  |he lazy dog The |
0190  71 75 69 63 6b 20 62 72  6f 77 6e 20 66 6f 78 20  |quick brown fox |
01a0  6a 75 6d 70 73 20 6f 76  65 72 20 74 68 65 20 6c  |jumps over the l|
01b0  61 7a 79 20 64 6f 67 0a  54 68 65 20 71 75 69 63  |azy dog The quic|
01c0  6b 20 62 72 6f 77 6e 20  66 6f 78 20 6a 75 6d 70  |k brown fox jump|
01d0  73 20 6f 76 65 72 20 74  68 65 20 6c 61 7a 79 20  |s over the lazy |
01e0  64 6f 67 0a 54 68 65 20  71 75 69 63 6b 20 62 72  |dog The quick br|
01f0  6f 77 6e 20 66 6f 78 20  6a 75 6d 70 73 20 6f 76  |own fox jumps ov|
0200  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0210  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0220  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0230  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0240  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0250  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0260  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0270  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0280  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0290  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02a0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02b0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02c0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02d0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02e0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02f0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|

avrdude>
avrdude.exe done.  Thank you.

mcuee · 2022-06-14T00:00:35Z

My bad, I did not realize there is a difference between ArduinoISP and 'Arduino as ISP'. I like to clarify that I'm using 'Arduino as ISP' programmer soo avrdude -c stk500v1 ... is correct

You may want to try avrdude -c avrisp instead if you use "Arduino as ISP".

@x0urc3
Even with stk500v1 it works for me as well.

PS C:\work\avr\avrdude_test\avrdude-v7.0-windows-x64> echo "read eeprom 0 0x300" | ./avrdude -c stk500v1 -P COM3 -b 19200 -p atmega328p -t

avrdude.exe: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.02s

avrdude.exe: Device signature = 0x1e950f (probably m328p)
avrdude> >>> read eeprom 0 0x300

Reading | ################################################## | 100% 5.10s

0000  54 68 65 20 71 75 69 63  6b 20 62 72 6f 77 6e 20  |The quick brown |
0010  66 6f 78 20 6a 75 6d 70  73 20 6f 76 65 72 20 74  |fox jumps over t|
0020  68 65 20 6c 61 7a 79 20  64 6f 67 0a 54 68 65 20  |he lazy dog The |
0030  71 75 69 63 6b 20 62 72  6f 77 6e 20 66 6f 78 20  |quick brown fox |
0040  6a 75 6d 70 73 20 6f 76  65 72 20 74 68 65 20 6c  |jumps over the l|
0050  61 7a 79 20 64 6f 67 0a  54 68 65 20 71 75 69 63  |azy dog The quic|
0060  6b 20 62 72 6f 77 6e 20  66 6f 78 20 6a 75 6d 70  |k brown fox jump|
0070  73 20 6f 76 65 72 20 74  68 65 20 6c 61 7a 79 20  |s over the lazy |
0080  64 6f 67 0a 54 68 65 20  71 75 69 63 6b 20 62 72  |dog The quick br|
0090  6f 77 6e 20 66 6f 78 20  6a 75 6d 70 73 20 6f 76  |own fox jumps ov|
00a0  65 72 20 74 68 65 20 6c  61 7a 79 20 64 6f 67 0a  |er the lazy dog |
00b0  54 68 65 20 71 75 69 63  6b 20 62 72 6f 77 6e 20  |The quick brown |
00c0  66 6f 78 20 6a 75 6d 70  73 20 6f 76 65 72 20 74  |fox jumps over t|
00d0  68 65 20 6c 61 7a 79 20  64 6f 67 0a 54 68 65 20  |he lazy dog The |
00e0  71 75 69 63 6b 20 62 72  6f 77 6e 20 66 6f 78 20  |quick brown fox |
00f0  6a 75 6d 70 73 20 6f 76  65 72 20 74 68 65 20 6c  |jumps over the l|
0100  61 7a 79 20 64 6f 67 0a  54 68 65 20 71 75 69 63  |azy dog The quic|
0110  6b 20 62 72 6f 77 6e 20  66 6f 78 20 6a 75 6d 70  |k brown fox jump|
0120  73 20 6f 76 65 72 20 74  68 65 20 6c 61 7a 79 20  |s over the lazy |
0130  64 6f 67 0a 54 68 65 20  71 75 69 63 6b 20 62 72  |dog The quick br|
0140  6f 77 6e 20 66 6f 78 20  6a 75 6d 70 73 20 6f 76  |own fox jumps ov|
0150  65 72 20 74 68 65 20 6c  61 7a 79 20 64 6f 67 0a  |er the lazy dog |
0160  54 68 65 20 71 75 69 63  6b 20 62 72 6f 77 6e 20  |The quick brown |
0170  66 6f 78 20 6a 75 6d 70  73 20 6f 76 65 72 20 74  |fox jumps over t|
0180  68 65 20 6c 61 7a 79 20  64 6f 67 0a 54 68 65 20  |he lazy dog The |
0190  71 75 69 63 6b 20 62 72  6f 77 6e 20 66 6f 78 20  |quick brown fox |
01a0  6a 75 6d 70 73 20 6f 76  65 72 20 74 68 65 20 6c  |jumps over the l|
01b0  61 7a 79 20 64 6f 67 0a  54 68 65 20 71 75 69 63  |azy dog The quic|
01c0  6b 20 62 72 6f 77 6e 20  66 6f 78 20 6a 75 6d 70  |k brown fox jump|
01d0  73 20 6f 76 65 72 20 74  68 65 20 6c 61 7a 79 20  |s over the lazy |
01e0  64 6f 67 0a 54 68 65 20  71 75 69 63 6b 20 62 72  |dog The quick br|
01f0  6f 77 6e 20 66 6f 78 20  6a 75 6d 70 73 20 6f 76  |own fox jumps ov|
0200  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0210  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0220  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0230  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0240  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0250  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0260  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0270  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0280  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0290  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02a0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02b0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02c0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02d0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02e0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02f0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|

avrdude>
avrdude.exe done.  Thank you.

mcuee · 2022-06-14T00:05:04Z

@dl8dtl
Side topic. Just wondering what is the difference between stk500v1 and avrisp? Both seem to work with the "Arduino as ISP". I know that AVRISP lacks some features of the STK500.

BTW, Atmel document https://github.com/avrdudes/avrdude/blob/main/atmel-docs/STK500v2-AVR068.pdf seems to say that AVRISP is the same as STK500v2 in most cases except some unique features of the STK500v2. But then avrdude's avrisp apparently talks STK500v1 protocol.

Is it that the original AVRISP FW is compatible with STK500v1 and later FW is compatible with STK500v2?

x0urc3 · 2022-06-14T03:35:50Z

@mcuee as I mentioned in my first post, terminal mode (-t) works fine. I am having trouble when using -U eeprom:r:dump.hex:i. Did not work for stk500v1 or avrisp

mcuee · 2022-06-14T05:13:55Z

@mcuee as I mentioned in my first post, terminal mode (-t) works fine. I am having trouble when using -U eeprom:r:dump.hex:i. Did not work for stk500v1 or avrisp

No issue here as well.

C:\work\avr\binary\avrdude-v7.0-windows-x64> .\avrdude.exe -p m328p -c stk500v1 -P COM29 -b 19200 -U eeprom:w:entest.eep:i -v

avrdude.exe: Version 7.0
             Copyright (c) Brian Dean, http://www.bdmicro.com/
             Copyright (c) Joerg Wunsch

             System wide configuration file is "C:/work/avr/binary/avrdude-v7.0-windows-x64/avrdude.conf"

             Using Port                    : COM29
             Using Programmer              : stk500v1
             Overriding Baud Rate          : 19200
             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
             PollIndex                     : 3
             PollValue                     : 0x53
             Memory Detail                 :

                                               Block Poll               Page                       Polled
               Memory Type Alias    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    1      0  4500  4500 0x00 0x00
               hfuse                   0     0     0    0 no          1    1      0  4500  4500 0x00 0x00
               efuse                   0     0     0    0 no          1    1      0  4500  4500 0x00 0x00
               lock                    0     0     0    0 no          1    1      0  4500  4500 0x00 0x00
               calibration             0     0     0    0 no          1    1      0     0     0 0x00 0x00
               signature               0     0     0    0 no          3    1      0     0     0 0x00 0x00

             Programmer Type : STK500
             Description     : Atmel STK500 Version 1.x firmware
             Hardware Version: 2
             Firmware Version: 1.18
             Topcard         : Unknown
             Vtarget         : 0.0 V
             Varef           : 0.0 V
             Oscillator      : Off
             SCK period      : 0.1 us

avrdude.exe: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.02s

avrdude.exe: Device signature = 0x1e950f (probably m328p)
avrdude.exe: reading input file "entest.eep"
avrdude.exe: writing eeprom (512 bytes):

Writing | ################################################## | 100% 24.82s

avrdude.exe: 512 bytes of eeprom written
avrdude.exe: verifying eeprom memory against entest.eep:

Reading | ################################################## | 100% 1.61s

avrdude.exe: 512 bytes of eeprom verified

avrdude.exe done.  Thank you.

C:\work\avr\binary\avrdude-v7.0-windows-x64> .\avrdude.exe -p m328p -c stk500v1 -P COM29 -b 19200 -U eeprom:r:entest_readback.eep:i -v

avrdude.exe: Version 7.0
             Copyright (c) Brian Dean, http://www.bdmicro.com/
             Copyright (c) Joerg Wunsch

             System wide configuration file is "C:/work/avr/binary/avrdude-v7.0-windows-x64/avrdude.conf"

             Using Port                    : COM29
             Using Programmer              : stk500v1
             Overriding Baud Rate          : 19200
             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
             PollIndex                     : 3
             PollValue                     : 0x53
             Memory Detail                 :

                                               Block Poll               Page                       Polled
               Memory Type Alias    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    1      0  4500  4500 0x00 0x00
               hfuse                   0     0     0    0 no          1    1      0  4500  4500 0x00 0x00
               efuse                   0     0     0    0 no          1    1      0  4500  4500 0x00 0x00
               lock                    0     0     0    0 no          1    1      0  4500  4500 0x00 0x00
               calibration             0     0     0    0 no          1    1      0     0     0 0x00 0x00
               signature               0     0     0    0 no          3    1      0     0     0 0x00 0x00

             Programmer Type : STK500
             Description     : Atmel STK500 Version 1.x firmware
             Hardware Version: 2
             Firmware Version: 1.18
             Topcard         : Unknown
             Vtarget         : 0.0 V
             Varef           : 0.0 V
             Oscillator      : Off
             SCK period      : 0.1 us

avrdude.exe: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.02s

avrdude.exe: Device signature = 0x1e950f (probably m328p)
avrdude.exe: reading eeprom memory:

Reading | ################################################## | 100% 3.19s

avrdude.exe: writing output file "entest_readback.eep"

avrdude.exe done.  Thank you.

C:\work\avr\binary\avrdude-v7.0-windows-x64> cat .\entest_readback.eep
:2000000054686520717569636B2062726F776E20666F78206A756D7073206F76657220740E
:200020006865206C617A7920646F670A54686520717569636B2062726F776E20666F78207C
:200040006A756D7073206F76657220746865206C617A7920646F670A5468652071756963FD
:200060006B2062726F776E20666F78206A756D7073206F76657220746865206C617A7920D4
:20008000646F670A54686520717569636B2062726F776E20666F78206A756D7073206F76B5
:2000A000657220746865206C617A7920646F670A54686520717569636B2062726F776E20FE
:2000C000666F78206A756D7073206F76657220746865206C617A7920646F670A54686520C2
:2000E000717569636B2062726F776E20666F78206A756D7073206F76657220746865206C16
:20010000617A7920646F670A54686520717569636B2062726F776E20666F78206A756D7038
:2001200073206F76657220746865206C617A7920646F670A54686520717569636B20627279
:200140006F776E20666F78206A756D7073206F76657220746865206C617A7920646F670A0E
:2001600054686520717569636B2062726F776E20666F78206A756D7073206F7665722074AD
:200180006865206C617A7920646F670A54686520717569636B2062726F776E20666F78201B
:2001A0006A756D7073206F76657220746865206C617A7920646F670A54686520717569639C
:2001C0006B2062726F776E20666F78206A756D7073206F76657220746865206C617A792073
:2001E000646F670A54686520717569636B2062726F776E20666F78206A756D7073206F7654
:20020000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE
:20022000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFDE
:20024000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFBE
:20026000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF9E
:20028000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF7E
:2002A000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5E
:2002C000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF3E
:2002E000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF1E
:20030000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFD
:20032000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFDD
:20034000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFBD
:20036000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF9D
:20038000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF7D
:2003A000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D
:2003C000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF3D
:2003E000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF1D
:00000001FF

Using usbasp to verify as well.

C:\work\avr\binary\avrdude-v7.0-windows-x64> echo "read eeprom 0 0x400" | .\avrdude -c usbasp -p atmega328p -t

avrdude.exe: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.00s

avrdude.exe: Device signature = 0x1e950f (probably m328p)
avrdude> >>> read eeprom 0 0x400

Reading | ################################################## | 100% 0.55s

0000  54 68 65 20 71 75 69 63  6b 20 62 72 6f 77 6e 20  |The quick brown |
0010  66 6f 78 20 6a 75 6d 70  73 20 6f 76 65 72 20 74  |fox jumps over t|
0020  68 65 20 6c 61 7a 79 20  64 6f 67 0a 54 68 65 20  |he lazy dog The |
0030  71 75 69 63 6b 20 62 72  6f 77 6e 20 66 6f 78 20  |quick brown fox |
0040  6a 75 6d 70 73 20 6f 76  65 72 20 74 68 65 20 6c  |jumps over the l|
0050  61 7a 79 20 64 6f 67 0a  54 68 65 20 71 75 69 63  |azy dog The quic|
0060  6b 20 62 72 6f 77 6e 20  66 6f 78 20 6a 75 6d 70  |k brown fox jump|
0070  73 20 6f 76 65 72 20 74  68 65 20 6c 61 7a 79 20  |s over the lazy |
0080  64 6f 67 0a 54 68 65 20  71 75 69 63 6b 20 62 72  |dog The quick br|
0090  6f 77 6e 20 66 6f 78 20  6a 75 6d 70 73 20 6f 76  |own fox jumps ov|
00a0  65 72 20 74 68 65 20 6c  61 7a 79 20 64 6f 67 0a  |er the lazy dog |
00b0  54 68 65 20 71 75 69 63  6b 20 62 72 6f 77 6e 20  |The quick brown |
00c0  66 6f 78 20 6a 75 6d 70  73 20 6f 76 65 72 20 74  |fox jumps over t|
00d0  68 65 20 6c 61 7a 79 20  64 6f 67 0a 54 68 65 20  |he lazy dog The |
00e0  71 75 69 63 6b 20 62 72  6f 77 6e 20 66 6f 78 20  |quick brown fox |
00f0  6a 75 6d 70 73 20 6f 76  65 72 20 74 68 65 20 6c  |jumps over the l|
0100  61 7a 79 20 64 6f 67 0a  54 68 65 20 71 75 69 63  |azy dog The quic|
0110  6b 20 62 72 6f 77 6e 20  66 6f 78 20 6a 75 6d 70  |k brown fox jump|
0120  73 20 6f 76 65 72 20 74  68 65 20 6c 61 7a 79 20  |s over the lazy |
0130  64 6f 67 0a 54 68 65 20  71 75 69 63 6b 20 62 72  |dog The quick br|
0140  6f 77 6e 20 66 6f 78 20  6a 75 6d 70 73 20 6f 76  |own fox jumps ov|
0150  65 72 20 74 68 65 20 6c  61 7a 79 20 64 6f 67 0a  |er the lazy dog |
0160  54 68 65 20 71 75 69 63  6b 20 62 72 6f 77 6e 20  |The quick brown |
0170  66 6f 78 20 6a 75 6d 70  73 20 6f 76 65 72 20 74  |fox jumps over t|
0180  68 65 20 6c 61 7a 79 20  64 6f 67 0a 54 68 65 20  |he lazy dog The |
0190  71 75 69 63 6b 20 62 72  6f 77 6e 20 66 6f 78 20  |quick brown fox |
01a0  6a 75 6d 70 73 20 6f 76  65 72 20 74 68 65 20 6c  |jumps over the l|
01b0  61 7a 79 20 64 6f 67 0a  54 68 65 20 71 75 69 63  |azy dog The quic|
01c0  6b 20 62 72 6f 77 6e 20  66 6f 78 20 6a 75 6d 70  |k brown fox jump|
01d0  73 20 6f 76 65 72 20 74  68 65 20 6c 61 7a 79 20  |s over the lazy |
01e0  64 6f 67 0a 54 68 65 20  71 75 69 63 6b 20 62 72  |dog The quick br|
01f0  6f 77 6e 20 66 6f 78 20  6a 75 6d 70 73 20 6f 76  |own fox jumps ov|
0200  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0210  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0220  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0230  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0240  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0250  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0260  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0270  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0280  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0290  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02a0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02b0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02c0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02d0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02e0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
02f0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0300  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0310  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0320  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0330  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0340  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0350  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0360  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0370  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0380  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0390  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
03a0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
03b0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
03c0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
03d0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
03e0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
03f0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|

avrdude>
avrdude.exe done.  Thank you.

x0urc3 · 2022-06-14T09:48:47Z

I want to replicate @mcuee test case by writing and reading using -U argument, but my setup is not cooperating.

./avrdude -c avrisp -p m328p -P /dev/ttyUSB0 -b 19200 -U eeprom:w:entest.epp:i -v

avrdude: Version 7.0-20220610 (cb11423)
...

Reading | ################################################## | 100% 2.76s

avrdude: verification error, first mismatch at byte 0x0000
         0x61 != 0x54
avrdude: verification error; content mismatch

avrdude done.  Thank you.

x0urc3 · 2022-06-14T09:54:28Z

BTW based on avrdude.conf both stk500v1 and avrisp programmer are type = "stk500" soo I guess they are the same.

mcuee · 2022-06-14T09:56:16Z

I want to replicate @mcuee test case by writing and reading using -U argument, but my setup is not cooperating.

Just FYI for my setup.

Programmer: Arduino Uno with "Arduino as ISP" sketch.
Device: Arduino Uno

@x0urc3 Please give the "ScratchMonkey" sketch a try, it is emulating stk500v2 protocol and works better for me.

Ref: you can see my test results here, no need to patch avrdude.

To integrate the optional patches for ScratchMonkey #989

x0urc3 · 2022-06-14T17:28:05Z

I have tracked the cause of the bad EEPROM dump. I have used a verstion of the 'Arduino as ISP' from Adafruit here instead of the official Arduino here
The Adafruit 'Arduino as ISP' does NOT properly handle word-based address when reading/writing eeprom causing it to repeat at 256 boundary.
This resolves this issue.

Thanks @mcuee for the feedback and suggestion

mcuee · 2022-06-15T00:02:37Z

@x0urc3 Glad that you have found the root cause of the issue. Please close this issue then since it is not an avrdude problem.

x0urc3 changed the title ~~Bad EEPROM dump from ATmega328p using ArduinoISP programmer~~ Bad EEPROM dump from ATmega328p using 'Arduino as ISP' programmer Jun 13, 2022

mcuee mentioned this issue Jun 13, 2022

Do STK500/arduino/xbee programmers fail EEPROM r/w for some parts? #967

Closed

x0urc3 changed the title ~~Bad EEPROM dump from ATmega328p using 'Arduino as ISP' programmer~~ Bad EEPROM dump from ATmega328p using Adafruit 'Arduino as ISP' programmer Jun 14, 2022

x0urc3 mentioned this issue Jun 14, 2022

ArduinoISP.ino does not properly handle word-based address for EEPROM read/write adafruit/Adafruit_Learning_System_Guides#2186

Open

MCUdude closed this as completed Jun 15, 2022

mcuee added the invalid This doesn't seem right label Jun 19, 2022

mcuee mentioned this issue Jun 4, 2023

AVRDUDE flashing eeprom with error using "Arduino as ISP" for ATMEGA128 #1337

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