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Posted on March 06, 2016 at 16:03Hello, When adding a USB CDC Device to my project using CubeMX I am getting an error in the clock configuration tab saying that the source of the clock has to be external? If USB is removed then there is no error. At...
Posted on March 05, 2016 at 21:14 I use stm32f105's usb otg interface in forced host mode. When I issued a bulk in transaction, after some nak returned (which is ok), keep retrying, then data came, this first transaction completed successfully. ...
Posted on April 16, 2014 at 11:37I'm having problems to produce correctly working landscape LCD with STemWin and STM32F429 discovery. I'm using STemWin_HelloWorld application from STM32Cube_FW_F4_V1.1.0 as a base for my tests. I don't need to rotate...
Posted on February 26, 2016 at 18:26Helloabout 'bkpt' instruction and no debugger attached? ( semihosting problem)I read that must be generated HardFault exception in this case but this never happens.I have already tested HardFault vector with divid...
Posted on March 04, 2016 at 17:38Hi all,Are there have any one know this problem, I have to trying send only one byte via I2C3, butI don't know why STM32F427 I2C3 will send the byte repeat? uint32_t I2C_WrBuf(I2C_TypeDef* I2Cx, uint8_t DevAddr, uint...
Posted on March 02, 2016 at 23:17I am a student from University of Cairo Iam trying to generate a 50 hz sinusoidal using my stm32f4 discovery board. I am running my timer in 10khz (switching freq = 10khz) and I am using a lookup table (generated fr...
Posted on March 04, 2016 at 23:47Hi, i wrote a simple program in Keil uVision to test the HAL SPI driverThe logic analyzer shows that there is clock activity as expected but the MOSI ouput stay low all time even with pull-up enabled (see attached sc...
Posted on March 02, 2016 at 00:07I am using the Stm32CubeL4 to generate a USB device with a CDC class. This is on a custom board. I am not using the USB ID line or VBUS. It runs, but USBD_CDC_Init() is never called. On the Windows side, I see an ''...
Posted on March 04, 2016 at 21:12Hi All,I am now trying to building a USB sound card with microphone.When I use USBlyzer to monitor the usb communication, it didn't have ''set configuration'' and start fails.which part is wrong?Thanks.
Posted on March 04, 2016 at 06:47I'm developing an application using the stm32f429 and have completed the firmware. The total size is only ~300kB so I'm trying to downgrade to the 'VE' version with only 512kb as it's substantially cheaper.On my prot...
