Alas, the STR71x. Specifically the STR711. Should be close to the STR75x, no?

Thanks,
Erik

Hi
Could I have that software? I'm trying to use the USB interface in a STR750 and It could be a geat help.
Thanks in advance.

I'm attempting to build the ST USB Development Kit demo projects for the SMT32 Primer. I've downloaded the latest version of the source code from ST and they include RIDE7 projects for each of the examples. Each project fails to build when the "dwf2xml.exe" program crashes. I would give you the command line from the "Build Log" but I am unable to copy & paste it here for some reason.

Any ideas?

Thanks,

Dale Wheat

I wish to acquire data from sensors connected to ADC I/O of a STR750F Reva board into my laptop. Can I use your USB Virtual COM Port demo in such a case ? Can I get your file ?

Thank you.
Marco

Yes, you can use it as a basis. It is quite interesting because it emulates a serial port, so it's an easy way to retrieve and display data.
The best would be to redirect the read/write functions assigned to the UART of the STR750 to appropriate routines making use of the ADC instead.
Then the USB configuration can be kept.
As a result, you connect the USB of your STR750 to your PC and a virtual COM port is assigned: all you have to do is open a Terminal software like HyperTerminal, configure it to use the virtual COM port and see the values flow into the terminal screen !

I will send you the project.

regards,
Lionel

Hi all,
Someone tried successfully USB Virtual COM Port sample? I have Reva Starter Kit and I tried USB sample from ST USB Development Kit but my problem is in this point:

while (pInformation->Current_Configuration == 0) NOP_Process ();
     bDeviceState = CONFIGURED;

Thanks
Daniele

Hi dan,

The usb clock must be 48MHz. You must change the PLL:
-if you use HSI : RCC_PLLConfig(RCC_PLLSource_HSI_Div2, RCC_PLLMul_12);
-if you use HSE : RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_12);

It ok for STM32 . The problem can be similar for you STR.

Hi,

I have copy the ST DFU exemple. The micro is acknowledge by PC but when I try to reprogram STM32F103, I have an unexpected error. The flash size is more important that the program. Are you a single example you run on Reva board (STM32F103B)?

Thanks

Hi boubou,

Thanks for your answer. Anyway I tried to change the PLL config in Set_System() and Set_USBClock() functions with both configuration, but I had always the same problem. Maybe I make changes in other place? I'm not tried more than one example at a time.

Thanks a lot anyway.
Dan

Hi Dan,
I have forgot another configuration : RCC_USBCLKConfig

if PLL = 72 MHz
RCC_USBCLKConfig(RCC_USBCLKSource_PLLCLK_1Div5); //USBCLK = PLLCLK / 1.5 = 48MHz
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USB, ENABLE); //Enable USB clock

if PLL = 48Mhz (in your case with a 4Mhz HSE)
RCC_USBCLKConfig(RCC_USBCLKSource_PLLCLK_Div1); //USBCLK = PLLCLK / 1 = 48MHz
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USB, ENABLE); //Enable USB clock

If you use DFU example, this commande is in Set_System()

Hi boubou,

Finally it work :-D
I trash the project and I reopen it from the original zip package, then I change only the PLL config line, without replace the code with the library functions.

For anyone that want to play this demo with REVa Starter Kit, the changes I made are:
RCCU->PLL1CR = ( Tmp & ~0x7 ) | RCCU_Div_1 | 0x40; //old line RCCU->PLL1CR = ( Tmp & ~0x7 ) | RCCU_Div_2 | 0x40;
in Set_System() function;

PCU->PLL2CR = 0x81D0; //uncommented in Set_USBClock() function

Both of them are in hw_config.c file.

Thanks a lot!

Sorry to bring an old thread back to life, but I found the following posts via a Google search:

I hope Lionel is still reading this forum, because I too would like to request a copy of his Virtual COM Port Demo for the STR750 for use with our STR750F Reva board.

So, Lionel, please if you happen to see this message, I hope you can help. Thanks in advance :)

Hi,

This example is now part of the software install.
Just install the latest versions of Ride7 (7.38) and RKit-ARM (1.38), and you'll find it here:
\Examples\ARM\REva\STR75X_VirtualComPort\...

(Lionel does not work here anymore)

Best Regards,

Vincent