Hi there
I'm new at Keil and ARM. I tried a lot to ran a project (blink) to just test if my STM32F4 Discovery is working or not but there is a Error "error: flash download failed - cortex-m4" and I searched some in internet but I couldnt fix it. I will be thankful if you guys help me.
Masoud
Ok, do some basic diagnostics
Make sure you have the ST-LINK drivers installed, and you can see in Device Manager.
Go into the project options for the debugger, make sure it has the ST-LINK selected, SWD mode selected, and that it can see the target chip. Then make sure you've picked a flash algorithm for the STM32F4xx 1MB
If this doesn't work need to explain your situation a lot better, and explain what from the "internet" you have actually done, and what you observed.
Thank you Clive One for your respond
I've checked the things you told:
My ST-LINK is already installed and in "Device Manager" it is under "Universal Serial Bus devices" as STM32 STLINK.
and the other Option settings are as same as you said. I also captured them to describe better to you. If you don't mind please check them from the link below.
www.dropbox.com/.../AABTlLi8vMtpNtvx02L9jszka
Hope they would be helpful for you to figure out what my proble is.
Thanks
Your might want to try the "connect under reset" option. Alternatively strapping BOOT pin high.
You can also attempt to erase the part, either in Keil, or via the ST-LINK Utilities
if you mean "Connect Under Reset" as an option in ST-LINK Utilities, I can't connect my board to to that program right now either in "Normal" mode or "Connect Under Reset" mode or "Hot Plug" mode. Error shows for all of the modes is "Can not read memory! Disable read Out Protection and retry."
I also looked for disabling read out protection but don't understand anything. Help me please.
It should also be a connection option within the Keil debugger settings dialog. Bottom left corner.
Has this board every functioned, or had code downloaded to it? Does it work on any other computers, with different cables, or current drivers?
I checked the things you said and after a little search I solve the problem. Thanks for your help.
I also created a blog for others who wants to start from the beginning.
examplation.wordpress.com/.../
I will create another one for the FLASH DOWNLOAD ERROR as soon as possible and will post it here.
Hey guys
If you still have the flash download problem, I made a blog for that check it out. I believe it'll be helpful.