stm32f407vet6 interface with x-Nucleo-BNRG2A1

[Kumar123]

Hi

Does the X-NUCLEO-BNRG2A1 BLE module support interfacing with the STM32F407VET6 board? Please let me know.

[Andrew Neil]

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@Kumar123 wrote:

I have sent a ZIP file — please take a look and let me know.

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Sorry, it's your project - you need to do the investigation.

Debugging is a key part of any development - hardware or software - you can't just throw up your hands, say "it doesn't work", and expect others to fix it for you.

Some tips on debugging:

https://community.st.com/t5/community-guidelines/how-to-write-your-question-to-maximize-your-chances-to-find-a/tac-p/706966/highlight/true#M49

[Kumar123]

Hi Andrew

I doing the debug. I have attached on screen shot. This one only executing. Blnrg2 not show in st ble sensor app.

LOG("BlueNRG-2 SensorDemo_BLESensor-App Application\r\n");

[Andrew Neil]

Note that you can paste the image into the post - then we can see it in context:

But please don't post code as images - see How to insert source code.

So what is this LOG() actually supposed to do?

Is it a UART output?

PS:

Again, you have the working example on the Nucleo for reference - see what it does there ...

[mƎALLEm]

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@Kumar123 wrote:

Hi Andrew Neil
It is working fine on the Nucleo-F401RE board, but I am currently testing it on the STM32F407VET6 board.

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Nucleo-F401RE board is indeed a board but STM32F407VET6 isn't, it's the microcontroller used on the board.

So what board you are using for that STM32F407VET6 MCU?

[Andrew Neil]

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@mƎALLEm wrote:

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So what board you are using for that STM32F407VET6 MCU?

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Indeed.

@Kumar123 again, please post the schematic of this mystery board.

Again, see How to write your question to maximize your chances to find a solution 

[Kumar123]

Hi Andrew

Yes, LOG for debugging purpose.
On my STM32F407VET6 board, the RESET pin is connected to GND, and I'm using the SW3 button for reset. I have successfully flashed the code to the board, but the BLE device is not showing up in the ST BLE Sensor app.

 

[Andrew Neil]

Please give the full schematic.

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@Kumar123 wrote:

On my STM32F407VET6 board, the RESET pin is connected to GND, and I'm using the SW3 button for reset. 

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That doesn't make sense - connecting Reset (NRST) to ground will hold the processor permanently in reset - so nothing will ever happen

V = 100 pins;

T = LQFP.

So Reset (NRST) is on pin 14:

[Kumar123]

Hi Andrew

Can the NRST pin be used as a GPIO output pin (for Reset) in the .ioc configuration file? It is not showing up.

[Andrew Neil]

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@Kumar123 wrote:

Can the NRST pin be used as a GPIO output pin.

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No - see the datasheet:

https://www.st.com/resource/en/datasheet/stm32f407ve.pdf#page=49

via: https://www.st.com/en/microcontrollers-microprocessors/stm32f407ve.html#documentation

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@Kumar123 wrote:

in the .ioc configuration file? It is not showing up.

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The configuration tools won't offer options which aren't available in the hardware!

[Kumar123]

Hi Andrew 
I have created the .ioc configuration as shown. Can you confirm whether it supports BLE? The file is attached.