Trying to run a blinking LED on STM32H755ZI-Q

[William133467]

Hi,

am new to STM32 and i am trying to configurate my Nucleo but i don't understand my problem i am trying to setup a basic blink code with the basic structure (serial port communication with putty , debugger stlinkv3 and communication between cores but i can manage to ger it right thank you for any help or advises)

my problem is i cant manage to setup a basic ioc files configuration  for my stm32h755zi-q in the stmcubeide 1.18 i have a basic blink code using both core that work but when i try to setup whit other clock parameters configuration i cant manage to start the program (stlink v3 on the bord look like i cant connect)

[mƎALLEm · Accepted solution]

Hello,

In your project you set the HSE in Crystal/Ceramic Resonator

While it should be set in Bypass mode:

With Input frequency set to 8MHz:

From the schematics, there is no external crystal mounted on the board:

And the frequency is generated by the STLINK MCO.

See this article.

Attached a project where the two LEDs green and red are toggling. Each led is toggling with a core.

Hope that helps.

[William133467]

thank you for your help i am still new to this 
i made the changes in the ioc like you told me 

i change some multipliers to get 400mhz , 200 and 100

but i get this error when i try to start for infos i use the configs from
" Getting started with projects based on dual-core STM32H7 microcontrollers
in STM32CubeIDE"

i get this error now like last time 

[William133467]

i think my problem come from this i am trying on hse 8.33 if this work i will "Accept as Solution" in your reply if it works

thank you

edit
i change the mco output
and got this error

[mƎALLEm]

Just updated my previous post to attach a project where the two LEDs green and red are toggling. Each led is toggling with a core.

Hope that helps.

[William133467]

thank you for the program this help a lot 

do i use the good stlink config?

do i use this

or this configuration?

also do i use your config or the one provided by :
" Getting started with projects based on dual-core STM32H7 microcontrollers
in STM32CubeIDE"
thank you for your help and time

[mƎALLEm]

You need to use this configuration for this board as we set the input frequency in CubeMx to 8Mhz:

Meanwhile, in your case and to not complicate the things, as an external clock source is not needed (for example CAN or USB usage), you are just toggling a LED, so you can simply use HSI with PLL:

Hope that helps

[Christophe VRIGNAUD]

Hello,

There is no HSE crystal on the Nucleo except if you have soldered one.
So just use the default configuration for STLink default configuration as said above => MCO output = HSI/2.

Double core is a bit tricky when you begin. As a first step, try to get your application work with the default configuration as indicated in the application note.

Best regards

[William133467]

thank you for your informations i am trying to setup a good clock that will be use in my project to generate clocks and signals for a CCD sensors as well as gathering data in real live. i am trying to setep the microcontrolers in the best seteup before ading the timers and gpio 

[mƎALLEm]

Hello @William133467 ,

Did you test my project? 

Did you succeed the toggling?