MYSBootloader 1.3.0-beta.3

[luizrrocha]

@moskovskiy82 My boards.txt specify bootloader.low_fuses=0xF7 as the Arduino being programmed has a crystal on board.

One other thing: I built my own programming board, to support programming ATMega 328p chips and Pro boards in 3.3v@8MHz and 5v@16Mhz... I used a switch and a level converter board to connect the Uno ICSP port to the pins of the Pro.

Uno pins are 5V output, they would burn the input pins of the 3.3v Pro chip, did you account for that ?

[gohan]

You can use 5v to program a 3.3v pro mini as the chip is the same, one is only clocked down to 8Mhz in order to be stable at 3.3v

[luizrrocha]

@gohan I beg to differ. On Page 299 of Atmel's ATMega 328p datasheet you can verify that the Absolute Maximum Ratings table states : "Voltage on any Pin except RESET with respect to Ground . . . . . . . . . .-0.5V to VCC+0.5V" which adds to 3.8V for a 3.3V Pro.

And also: *NOTICE: Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.

Perhaps you have mistaken the Pro for the NRF24L01+ radio which is supplied by 3.3v but has 5Volt tolerant inputs ?

Otherwise there would be no need for those USB to FTDI boards with 3v3/5V selection jumpers ...

[gohan]

I programmed the pro mini with 5v and it worked. Maybe I was lucky. The 3v ftdi adapter is mandatory for esp8266 for example.

[A Former User]

@tekka for OSX, the sequencing of flags matters. So, line 45 can be:

$(PROJECT).o: $(PROJECT).c
"$(BINPATH)avr-gcc" $(CFLAGS) -I$(INCLUDES) $< -o $@

can be improved to

$(PROJECT).o: $(PROJECT).c
"$(BINPATH)avr-gcc" -I$(INCLUDES) $(CFLAGS) $< -o $@

and it all works.

Also, if anyone is getting error for "avr-gcc" not found, then just add the path to avr-gcc in your path.

[tekka]

@Bhavin-Doshi Thanks for reporting - could you prepare a PR?
https://github.com/mysensors/MySensorsBootloaderRF24

[A Former User]

@tekka Submitted https://github.com/mysensors/MySensorsBootloaderRF24/pull/20.

[tekka]

@Bhavin-Doshi PR merged. Thank you!

[nagurao.basude]

@tekka, I am planning to move from MySensors v2.0.0 to v2.1.1, do I need to use the updated MYSBootloader? Currently I am using MYSBootloader 1.3 pre-relase (https://forum.mysensors.org/topic/3453/mysbootloader-1-3-pre-release-myscontroller-1-0-0beta).

Can you please also help me understand the differences in the low_fuses and high_fuses values in the older version of bootloader and the latest version?

[tekka]

@nagurao.basude no, you don't need to but the new version has some stability improvements. The fuse differences are to better match HW (osc type) & clearing eeprom.

AVR fuse calculator: http://www.engbedded.com/fusecalc/

[Nca78]

Hello, has someone used the 1MHz precompiled bootloader ? If yes what baud rate did you use to communicate via serial ?
I flashed it on a node but I can't upload any script ("not in sync" error). If I believe HW.h it should be 9600 bauds but I have tried hat and nearly every baudrate with no luck.
I had no problem using the 8MHz version.

The only way I could use the 1MHz bootloader at the moment is to flash the hex file containing both bootloader and script.
Sorry to ask this stupid question, I wanted to compile the bootloader but Internet connection is nearly down and I can't even download Atmel Studio :(

[nagurao.basude]

@tekka Thank you very much for the response. I will just start migrating my existing nodes to MySensors v2.1.1library.

[Mark Swift]

@tekka try as I might, I can't get the nodes to respond to the new 'signal report' option in MYS Controller, any ideas why?

[tekka]

@Mark-Swift This feature only works on MySensors >=2.2.0

[Mark Swift]

@tekka said in MYSBootloader 1.3.0-beta.3:

@Mark-Swift This feature only works on MySensors >=2.2.0

@tekka I'm using the latest dev branch on all my nodes and gateway...

[tekka]

@Mark-Swift Hmm, that's odd - just tested it here with the latest dev and all is ok. Can you post the logs + node sketch?

[jacikaas]

Hello,

I have notice strange behavior with MYSBootloaderV13pre.hex 8MHz internal bootloader.

Problem: When I burn MYSBootloaderV13pre.hex 8MHz internal bootloader to my Standalone Atmega328p i testing it with Arduino Blink and Fade sketches. Problem is that theese sketches doesn't work on this bootloader. LED is just always ON.

I also tested the same sketches, same wiring, same Arduino Uno (5V when programming), same FTDI programmer (3.3V), same PC with Win 10 with same drivers, same Atmega328p with Nick Gammon Atmega Board Programmer when I burn Lilypad bootloader and then upload Blink and Fade sketches, they perfectly working.

I tried same uploading with Arduino IDE 1.6.5 and also with the newest version 1.8.5.
As a programmer I using Arduino as ISP. I theese tests when burning bootloader I don't connect external oscilator.

With Nick Gammon software I also checked fuses for both Lilypad and MYSBootloader settings, becose i was thought it is becose of them. Once I configure wrong fuses and it had a lot of time to reset it to default value.
Question: So now before changing fuses I want to ask maybe someone have been faced with similar problem?

I paste below info about Lilipad and MYSBootloader 8MHz internal oscilator boards fuse settings:

Lilypad bootloader

Atmega fuse calculator.
Written by Nick Gammon.
Version 1.11
Compiled on Nov 30 2017 at 17:36:58 with Arduino IDE 10805.
Attempting to enter programming mode ...
Entered programming mode OK.
Signature = 0x1E 0x95 0x0F 
Processor = ATmega328P
Flash memory size = 32768
LFuse = 0xE2 
HFuse = 0xDA 
EFuse = 0xFD 
Lock byte = 0xEF 
Clock calibration = 0x8E 
External Reset Disable.................. [ ]
Debug Wire Enable....................... [ ]
Enable Serial (ICSP) Programming........ [X]
Watchdog Timer Always On................ [ ]
Preserve EEPROM through chip erase...... [ ]
Boot into bootloader.................... [X]
Divide clock by 8....................... [ ]
Clock output............................ [ ]
Bootloader size: 2048 bytes.
Start-up time: SUT0: [X]  SUT1: [ ] (see datasheet)
Clock source: calibrated internal oscillator.
Brownout detection at: 2.7V.

MYSBootloaderV13pre bootloader

Atmega fuse calculator.
Written by Nick Gammon.
Version 1.11
Compiled on Nov 30 2017 at 19:48:16 with Arduino IDE 10805.
Attempting to enter programming mode ...
Entered programming mode OK.
Signature = 0x1E 0x95 0x0F 
Processor = ATmega328P
Flash memory size = 32768
LFuse = 0xE2 
HFuse = 0xD2 
EFuse = 0xFE 
Lock byte = 0xFF 
Clock calibration = 0x8E 
External Reset Disable.................. [ ]
Debug Wire Enable....................... [ ]
Enable Serial (ICSP) Programming........ [X]
Watchdog Timer Always On................ [ ]
Preserve EEPROM through chip erase...... [X]
Boot into bootloader.................... [X]
Divide clock by 8....................... [ ]
Clock output............................ [ ]
Bootloader size: 2048 bytes.
Start-up time: SUT0: [X]  SUT1: [ ] (see datasheet)
Clock source: calibrated internal oscillator.
Brownout detection at: 1.8V.

I appreciate any helpful info!

EDIT: I think I already found that there is newer MYSBootloader files of development version which working without problems. I will test it if I write good fuses :)

[Mark Swift]

@tekka said in MYSBootloader 1.3.0-beta.3:

@Mark-Swift Hmm, that's odd - just tested it here with the latest dev and all is ok. Can you post the logs + node sketch?

@tekka, just tried again, perhaps I'm missing something obvious?

I have the gateway and node using the latest dev branch, I click the node in MYS and then request a signal report - I see a tx in the log but nothing further? Do I need anything in the node sketch or the gateway? Does this work with the NRF's?

[tekka]

@tekka said in MYSBootloader 1.3.0-beta.3:

@Mark-Swift Hmm, that's odd - just tested it here with the latest dev and all is ok. Can you post the logs + node sketch?

[jacikaas]

Hello,

Q1: Does anybody was able to succesfully use 8MHz MYSBootloader 1.3.0-beta.3 on standalone Atmega328p?

All bootloaders I testing with Arduino BLINK example.
Arduino 1.8.5

I was testing 8MHz internal oscilator MYSBootloader 1.3.0-beta.3 with fuses on 2 different Atmega328p standalone but I can't upload sketch to it and test it. Arduino avrdude says that:
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x4a
Used fuses:
proMYSBL8.bootloader.low_fuses=0xE2
proMYSBL8.bootloader.high_fuses=0xDA
proMYSBL8.bootloader.extended_fuses=0x06 / 07
proMYSBL8.bootloader.unlock_bits=0x3F
proMYSBL8.bootloader.lock_bits=0x3F / 0F

Before that, I was burned my Atmega328p with 1MHz internal oscilator MYSBootloader 1.3.0-beta.3 bootloader and it was working.

Also I was testing 8MHz internal oscilator MYSBootloader 1.3pre2 with fuses on 2 different Atmega328p standalone and I can upload sketch to it and test it.
Used fuses:
proMYSBL8.bootloader.low_fuses=0xE2
proMYSBL8.bootloader.high_fuses=0xDA
proMYSBL8.bootloader.extended_fuses=0x06 / 07
proMYSBL8.bootloader.unlock_bits=0x3F
proMYSBL8.bootloader.lock_bits=0x3F / 0F

Q2: I noticed that with 8MHz internal oscilator MYSBootloader 1.3pre2 LED blinks not continuosly it like (* led ON; - led OFF):
*** --- *** --- *** --- ** - * - * - * - [cycle ends, then repeats again] *** --- *** --- *** --- ** - * - * - * - ...
And this one cycle of *** --- *** --- *** --- ** - * - * - * - takes ~8 seconds. Could it be something with watchdog timer? I not very know about this setting.

Thank You for help!