Pixhawk stm32f427vit6 replacement to rev. 3

gregswf · August 12, 2017, 8:08am

This is the pinout,

you can see the pin 1 marked on the board. Note the pin 1 is a voltage reference and it does not power the pixhawk.

ReedNoel · August 12, 2017, 8:10am

Thanks for you reply.
It correct, I can flash bootloader and firmware ok, haven’t error, but can’t run

ksschwabe · August 12, 2017, 8:35am

@ReedNoel: Once the Px4FMU-v2 bootloader is flashed on to the chip, you should be able to upload the firmware via UART2. The baud rate by default is 115200 for uploading the firmware via UART.

I don’t know if QGC allows one to upload via USART (I upload to my boards using the python px_uploader.py script and not QGC) .

You can find the px_uploader.py script in the PX4/Firmware repository: Firmware/Tools/px_uploader.py. To use it run

python <path>/px_uploader.py --port <UART_PORT> --baud-bootloader 115200 ArduCopter-v2.px4

where <UART_PORT> is the port of your FTDI UART port (you will have to check on what COM port your FTDI is connected.

ReedNoel · August 12, 2017, 8:46am

Thanks so much, I never use Py before, this software can running in windows 10 ?

ReedNoel · August 12, 2017, 9:06am

python C:\pixhawk_toolchain\Firmware\Tools\px_upload.py --port com2 --baud-bootloader 115200 ArduCopter-v2.px4
@ksschwabe: This command is correct ?

ksschwabe · August 12, 2017, 9:14am

@Reed_Noel: px_uploader not px_upload.

I think this is correct

python C:\pixhawk_toolchain\Firmware\Tools\px_uploader.py --port com2 --baud-bootloader 115200 ArduCopter-v2.px4

Unfortunately I don’t do any development under Windows 10 (I used Ubuntu), so I am not sure how complicated it is to get python up and running. It should be reasonably simple. I think it is just an installation file from the python website.

ReedNoel · August 12, 2017, 9:23am

Happen error, I don’t know , how to fix it

ksschwabe · August 12, 2017, 9:50am

You are trying to run that from the python console. You should run that from the cmd console.

ReedNoel · August 12, 2017, 9:55am

to seem missing some thing after .px4

ksschwabe · August 12, 2017, 10:09am

You are still trying to run that command in the python shell. You should run it from the command prompt.

See this: http://pythoncentral.io/execute-python-script-file-shell/

ReedNoel · August 12, 2017, 11:15am

@ksschwabe,
it error in code with line 59
:

this is error of line:

ksschwabe · August 12, 2017, 11:23am

You need to install pyserial.

The ‘import’ statements at the top of a python file load in various python modules. Your error says that it can’t find pyserial on your system. You will have to install that module: https://pythonhosted.org/pyserial/.

I suspect that you are going to get a lot of these errors, since these modules are not installed by default in the normal python installation.

ReedNoel · August 12, 2017, 11:50am

It can install, many many error happend:
C:>python C:\Users\Reed\Downloads\Compressed\pyserial-master\pyserial-master\setup.py install
running install
running bdist_egg
running egg_info
creating pyserial.egg-info
writing pyserial.egg-info\PKG-INFO
writing dependency_links to pyserial.egg-info\dependency_links.txt
writing top-level names to pyserial.egg-info\top_level.txt
writing manifest file ‘pyserial.egg-info\SOURCES.txt’
warning: manifest_maker: standard file ‘setup.py’ not found

error: package directory ‘serial’ does not exist

ReedNoel · August 12, 2017, 12:13pm

Ok, I search and found how install, it easy install with CMD

ReedNoel · August 12, 2017, 1:41pm

Dear @ksschwabe,
may I ask you some question:
1/ Does upload bootloader must be upload IO and FMU ?
2/ Before upload new bootloader PMU, I save to file.
- When I upload new bootloader (download from ardupilot):
- the PMU power led solid.
- the PMU B/E blinking.
- When I upload old bootloader
- the PMU power led solid.
- the PMU B/E led solid.
both 2 case - IO power led : solid,
- IO B/E led solid.
- IO ACT led blinking.
3/ Main led is off? what 's wrong ? is this case bootloader is wrong ?

I ask because when upload firmware with python, the FC not respond.
Thanks
Reed

ksschwabe · August 12, 2017, 5:27pm

@ReedNoel: Unfortunately I have never had a Pixhawk, so I don’t know what the LEDs should do.

You need to:

erase the whole flash on the STM32F427 chip
upload the Px4FMU-v2 bootloader to address 0x08000000 on the main STM32F427 chip (the large chip) on the Pixhawk.
upload the Px4IO bootloader to address 0x08000000 on the STM32F103 chip (the smaller of the two chips) on the Pixhawk
when you reset the Pixhawk (turn off power and power it on again) the LED should flash. This tells you that it is in the bootloader. If there is no main firmware on the STM32F427 chip, then it should stay in the bootloader. If the LED stops blinking then something has probably gone wrong.
when the LED is flashing and the board is in the bootloader, you can try and upload the firmware using the python px_uploader.py script.

Where are you getting the bootloader binaries from? Are you compiling them from source (https://github.com/PX4/Bootloader) or have you downloaded them from somewhere else?

ReedNoel · August 13, 2017, 4:25am

@ksschwabe you are very kind.
I do it again step by step follow your instruction.
and Successfully.
One again, Thanks for your help.
Rgs
Reed Noel

ReedNoel · January 14, 2018, 4:25am

Hi @ksschwabe,
I haven’t seen you for along time,
How are you, I hope you well.
I need your help.
A busy for along time, so not flying.
Now it can’t arm.
Please show me that:
Now it have new firmware with dated 13th Jan 2018.
can i update firmware without update bootloader ?
Can you give me your contact: viber, twister, facebook mess, … because , If I want ask you something, I search my email about this topic for ask your somethings.
Rgs
Reed Noel