💬 Various bootloader files based on Optiboot 6.2
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Good afternoon @GertSanders, I'm over the moon with your bootloaders than you provided me. Is there anything that would make you advice me not to use your 'optiboot_atmega328_08M_038400_NOLED.hex' bootloader full time on my light switches?
@Samuel235
I see no reason for not using it. The fact that you do not need the led, make no difference in the actual work of the boot loader. -
I have upgraded my Arduino to 1.6.8, running Ubuntu 14.04LTS and downloaded the GertSander great optiboot :-)
I use Arduino Pro mini clones from ebay. I have removed power LED and LDO, since those shall be powered from 2pcs AAA . I can read "80e" on the crystal - I assume this is 8MHz
But I get weird troubles, I can flash bootloader via TinyUSB and upload sketch via FTDI, but not the lower frequencies like 1MHz or 4MHz, my working sketch upload is with 8 MHz (I have not tried with a higer freq). I can upload both using internal and external crystal settings. I use BOD=1.8V
I have been suspecting my USB cable to MiniUSB to FTDI, but it's working when I use the 8MHz frequencey and 38K4baud rate
any good ideas?Just to be clear for me: did you try to upload a 1Mhz bootloader and then try to send a sketch via FTDI to the same 1Mhz boot loader, and this fails ?
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@GertSanders said:
@Samuel235
I see no reason for not using it. The fact that you do not need the led, make no difference in the actual work of the boot loader.Thank you!
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oki I got it 4 MHz wont work on Pro Mini. but I would assume 1MHz bootloaders should be ok?
1)I have first selected board: atmega328 based 32pins TQFP, then the frequency.
2)Flashed bootloader via tiny USB
3)Then put Pro Mini to FTDI, and then tried to upload sketch. (no changes at all to which board type, speed, or BOD)(I use 1 USB port on laptop for tinyUSB and another USB port for FTDI.)
Then I change speed/frequency, and do the step 1,2,3 as above
Selecting 8MHz-crystal-38k4-D8 is working flawless.
None of the 1MHz selection is working for me... -
oki I got it 4 MHz wont work on Pro Mini. but I would assume 1MHz bootloaders should be ok?
1)I have first selected board: atmega328 based 32pins TQFP, then the frequency.
2)Flashed bootloader via tiny USB
3)Then put Pro Mini to FTDI, and then tried to upload sketch. (no changes at all to which board type, speed, or BOD)(I use 1 USB port on laptop for tinyUSB and another USB port for FTDI.)
Then I change speed/frequency, and do the step 1,2,3 as above
Selecting 8MHz-crystal-38k4-D8 is working flawless.
None of the 1MHz selection is working for me...@bjacobse
Strange, I'm using the 1mhz with 9600 upload on 2 narrow nodes. I will investigate tomorrow. -
@bjacobse
Strange, I'm using the 1mhz with 9600 upload on 2 narrow nodes. I will investigate tomorrow.@GertSanders
I it's quite strange, I believe your bootloadser are in good shape and also your boards.txt
Thats why I suspect my USB to miniUSB cable to FTDI to behave odd.
Do you have Arduino Pro Mini 3,3V 8MHz that you can try at your place? -
@GertSanders
I it's quite strange, I believe your bootloadser are in good shape and also your boards.txt
Thats why I suspect my USB to miniUSB cable to FTDI to behave odd.
Do you have Arduino Pro Mini 3,3V 8MHz that you can try at your place?I uploaded two boot loaders on a pro mini 3V3 version with 8Mhz resonator.
On this board I loaded a boot loader for 1MHz clock frequency and upload speed of 9600 baud. This worked fine. Then I tried the 4800 baud upload speed version: same thing. Both boot loaders uploaded fine, and I was able to load sketches on both with an Adafruit FTDI friend at the specified upload speeds. 4800 is really "sloooooow".
Just to be sure I also used a cheap Chinese FTDI interface: same good results. -
I uploaded two boot loaders on a pro mini 3V3 version with 8Mhz resonator.
On this board I loaded a boot loader for 1MHz clock frequency and upload speed of 9600 baud. This worked fine. Then I tried the 4800 baud upload speed version: same thing. Both boot loaders uploaded fine, and I was able to load sketches on both with an Adafruit FTDI friend at the specified upload speeds. 4800 is really "sloooooow".
Just to be sure I also used a cheap Chinese FTDI interface: same good results.@GertSanders
Thank you Gert for checking with Arduino Pro Mini 8Mhz 3V3.
Then I will try with windows laptop, different FTDI and another cable. something in my current setup is behaving weird -
This is strange I tried to use win7 + Arduino IDE 1.6.7, and things are behaving normal, but it's not possible to at the same time, have FTDI + tinyUSB connected on each USB port, it's only working when 1 USB is used. I have 3 pcs Arduino Pro mini, 2 is working as they should. and 1 is only to be flashed with 8 MHZ bootloaders. I will have to look at this Pro Mini in a microscope at work - maybe it's a 5V 16MHz?!?
Something else I use Ubuntu and Arduino IDE 1.6.8. The Arduino IDE is behaing weird.
I now only use the 2 pcs good Arduini Pro Mini, both bootloader flased with tinyUSB and Win7 IDE 1.6.7. with 1MHz 4k8 bootloader. when I use FTDI in Ubuntu IDE 1.6.8 I get error message that upload failed. But is is working.
I can first upload sketch "bare minimum" upload and get error, no LED is flashing in Pro Mini (Expected), then I upload "Blink", upload shows error, but Pro Mini LED is blinking.
so Arduino IDE 1.6.8 in my Ubuntu is uploading sketches with FTDI fine - but shows an Arduino error. So I can flash Gert bootloadesr with windows7 and Arduino 1.6.7 :-)False error messages from Arduino 1.6.8...
WARNING: Category '' in library UIPEthernet is not valid. Setting to 'Uncategorized' Sketch uses 1,060 bytes (3%) of program storage space. Maximum is 32,256 bytes. Global variables use 9 bytes (0%) of dynamic memory, leaving 2,039 bytes for local variables. Maximum is 2,048 bytes. avrdude: stk500_recv(): programmer is not responding Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.Now I have to try to verify if my Ubuntu can flash bootloader with tinyUSB
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My Ubuntu won't let me successfully flash a 1MHz bootloader, only 8MHz with speed 38k4, it's not working with 8MHz 9k6 either,
but at least I can also confirm that Gert's bootloaders are working as they shall, since it's working for me using windows7 laptop -
when I run the below command in Ubuntu I can flash the bootloader
sudo avrdude -c usbtiny -p m328p -U flash:w:optiboot_atmega328_01M_009600_NOLED.hex -U lfuse:w:0x62:m -U hfuse:w:0xDE:m -U efuse:w:0x07:mAnd then I can use the Arduino IDE and upload sketch with settings for 1MHz external 9k6 BOD=1V8
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when I run the below command in Ubuntu I can flash the bootloader
sudo avrdude -c usbtiny -p m328p -U flash:w:optiboot_atmega328_01M_009600_NOLED.hex -U lfuse:w:0x62:m -U hfuse:w:0xDE:m -U efuse:w:0x07:mAnd then I can use the Arduino IDE and upload sketch with settings for 1MHz external 9k6 BOD=1V8
@bjacobse
Efuse 0x07 actually means no Brown Out Detection. Should save you some nano Amperes during operation. -
Hi, and thanks for your amazing work! I am trying to make your Narrow node with a Atmega 328P-PU and the pcb you made. I have low understanding of how I am going to upload "optiboot_atmega328_08M_038400_D6.hex" via a arduino uno.. Do I need to make anything with fuses or so? And how do I do it if that is the case?
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Hi, and thanks for your amazing work! I am trying to make your Narrow node with a Atmega 328P-PU and the pcb you made. I have low understanding of how I am going to upload "optiboot_atmega328_08M_038400_D6.hex" via a arduino uno.. Do I need to make anything with fuses or so? And how do I do it if that is the case?
There is a very good tutorial how to do this:
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There is a very good tutorial how to do this:
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@GertSanders Okey, thanks so In my understanding, that takes care of the fuses also.
It does if the board definitions are set right. Check out the tutorial to understand how it works, then you should know how to adapt to other boot loaders (like mine).
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It does if the board definitions are set right. Check out the tutorial to understand how it works, then you should know how to adapt to other boot loaders (like mine).
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@GertSanders Okey, I almost got it! I am stuck on compiling the sketch. It says "pins_arduino.h" is missing. Apparently I need a folder called "28PinBoard" with a file "pins_arduino.h" in it. Wich one can I use for this project?
Drop this ZIP (unpack it there) into your "hardware" directory. You should find a "hardware" directory in the Sketches directory, then restart the Arduino IDE.
It should find a complete set of boot loaders for the 28 pin and 32 pin versions.
0_1463253058014_atmega328p.zip
You will need to check that the directory is unpacked with all subdirectories. The directory name will be "atmega328p".
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@GertSanders My personal observations - some chips are more temperamental than the others. I recently tried to upload the sketch (8Mhz internal clock) and it failed a few times. Then I reflashed Optiboot and used the external clock (8Mhz external clock) and this cured the issue. With other chips I did not have this problem.
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@GertSanders My personal observations - some chips are more temperamental than the others. I recently tried to upload the sketch (8Mhz internal clock) and it failed a few times. Then I reflashed Optiboot and used the external clock (8Mhz external clock) and this cured the issue. With other chips I did not have this problem.
Indeed, the internal oscillator on some atmega328's is a bit off from 8MHz and enough so that higher speed transmission of sketches can give a problem.
