Is the STM32F446 compatible with the STM32F4xx USB OTG Driver?

[mluessi]

Posted on September 18, 2015 at 23:30

I have been working on porting code for a STM32F405 based board to a newer board that uses the STM32F446. I have been having troubles getting USB to work. See [DEAD LINK /public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/Flat.aspx?RootFolder=/public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/STM32F446%20configure%20PLLSAI%20for%2048MHz%20%28USB%29%20clock&FolderCTID=0x01200200770978C69A1141439FE559EB459D7580009C4E14902C3CDE46A77F0FFD06506F5B&TopicsView=https://my.st.com/public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/AllItems.aspx?Paged%3DTRUE%26p_StickyPost%3D%26p_DiscussionLastUpdated%3D20150917%252011%253a11%253a41%26p_ID%3D57709%26View%3D%257bF47A9ED8%252dE726%252d42BE%252dACED%252d732F13B66581%257d%26FolderCTID%3D0x012001%26PageFirstRow%3D41]previous post. I'm quite sure that the USB clock is configured correctly, but I can't get the USB device to work.

My code uses the ''STM32F105/7xx, STM32F2xx and STM32F4xx USB OTG Driver'' version 2.1.0 and ''STM32F105/7xx, STM32F2xx and STM32F4xx USB Device Library'' version 1.1.0. Does anyone know if these libraries are compatible with the STM32F446? I compared the reference manuals for the STM32F446 and the STM32F405 and there seem to be some differences. E.g., the 405 supports 3 endpoints, while the 446 supports 5 also the number of  Tx-IN FIFOs is different.Has anyone successfully used these libraries with the STM32F446 or does anyone know what would need to be changed to make them work? 

[Nesrine M_O]

Posted on September 21, 2015 at 11:50

Hi martin,

I confirm that the STM32_USB_OTG_Driver V 2.1.0 doesn't support the STM32F446. I will report this point to our development team as an enhancement request.-Syrine –

[brent]

Posted on August 04, 2017 at 04:09

Hello, I too am having this issue after migrating from an STM32F407 to the F4 Is an updated example available from ST?

ELMHIRI.Syrine

‌

Thank you for your help!

[Max]

Posted on August 04, 2017 at 07:30

The support for for STM32F446 was added in revision V 2.2.0 available

http://www.st.com/content/st_com/en/products/embedded-software/mcus-embedded-software/stm32-embedded-software/stm32-standard-peripheral-libraries-expansions/stsw-stm32046.html

.

Did you try this version?

[brent]

Posted on August 05, 2017 at 20:52

 ,

 ,

Hi

to_deletergalbany

‌  ,- thank you for ,the quick reply.

I inspected the v2.2.0 example, and here's what I found:

* I did not see a reference to the STM32F446 in the VCP example - neither in the readme.txt nor in the usb_bsp.c initialization code. ,

* The VCP_Loopback has a reference to the 446, but interpreting the ♯ defines in usb_bsp.c it seems like it's only pertaining to HS Device with ULPI_PHY.  ,What I need is a VCP FS (full speed) device. ,

I do see in both projects there is ♯ defines for F446 in ,system_stm32F4xx.c - for configuring the PLL.  ,

Question:

Is the F446 software-compatible with the F407 for USB FS (full speed) device?

 ,

Is the actual compatibility difference around the PLL setup?

The board I have has pin 11/12 connected to USB, with an 8MHz external crystal. ,

Overall - what I need is to adapt my working USB ,Full speed Device VCP code for the 407 to now work with the 446. ,

Thank you again for your help,

-Brent

[Max]

Posted on August 22, 2017 at 07:02

Sorry for the late answer,

to the extend of my knowledge it should be compatible.