Help with USB on stm32f723e-disco

[kashubadmitry]

Posted on July 13, 2017 at 10:00

Hello! 

I bought evaluation board: stm32f723e-disco

I want to communicate

stm32f7

23e-disco 

with PC through USB cable through virtual com-port

I use Keil as IDE.

Where can I find example project to start working with usb?

Thank You! 

[Imen.D]

Posted on July 13, 2017 at 10:36

Hello

Kashuba.Dmitry

,

As there is no CDC example in the

STM32CubeF7

with STM32F723E-Discovery device, you can start with another working USB example andget inspired from this

'CDC_Standalone'

application, it may helpf you :

STM32Cube_FW_F7_V1.7.0\Projects\STM32F769I_EVAL\Applications\USB_Device\CDC_Standalone

Regards

Imen

[kashubadmitry]

Posted on July 17, 2017 at 13:37

Thank You! Tell me please, how can I see the working of this example? What must I do?

Thank You!

[Imen.D]

Posted on July 18, 2017 at 15:55

Hi,

You find a readme.txt file describing how to use and test the example. You should follow the instructions detailed in this file.

[kashubadmitry]

Posted on July 20, 2017 at 16:17

Hi!

Tell me please, what driver I need to setup on PC to work with board stm32f723-disco?

Thank You!

[kashubadmitry]

Posted on July 20, 2017 at 17:03

I also have another question.

I use Keil v.5

1. I opened the project in folder STM32Cube_FW_F7_V1.7.0\Projects\STM32F769I_EVAL\Applications\USB_Device\CDC_Standalone\MDK-ARM

2. in file 'main.c' in function 'int main (void)' I found function  'USBD_Init(&USBD_Device, &VCP_Desc, 0)';

3. in the definition of the function

'USBD_Init()' I found function  'USBD_LL_Init(pdev);'

4. in

 the definition of th

e

function

'USBD_LL_Init();' I found function  'HAL_PCD_Init(&hpcd);'

5. in the

 definition of th

e

function

'HAL_PCD_Init();' I found function  'HAL_PCD_MspInit(hpcd);'

6. in the

 definition of th

e

function '

HAL_PCD_MspInit();' in file 'stm32f7xx_hal_pcd.c' I DIDN'T FIND THE CONFIGURING OF THE GPIOs FOR USB

7. through the search in file 'usbd_conf.c' of this project I found another definition of the function '

HAL_PCD_MspInit();'

  where GPIOs are configured for USB!!!!!!

WHY THE DEFINITION OF THE FUNCTION '

HAL_PCD_MspInit();' IS IN FILE 'stm32f7xx_hal_pcd.c' (__weak void HAL_PCD_MspInit(PCD_HandleTypeDef *hpcd)), BUT NOT IN FILE '

usbd_conf.c' (void HAL_PCD_MspInit(PCD_HandleTypeDef *hpcd))?

Thank You!

[kashubadmitry]

Posted on July 21, 2017 at 15:22

Hi!

while programming stm32f723 through st-link utility, error 0x08004000 was occurred.

What does the error

0x08004000 mean?

 What does the error 0x08000CB4 mean?

Thank You!