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STM32CubeF4: Usb documentation

Posted on February 28, 2014 at 16:28Is there any documentation or examples for the new USB stack in the STM32CubeF4 code library ? I need to implement an USB Virtual Com port. I have done this for the older usb stack in the STM32F4-Discovery_FW_V1.1...

How to use timers for generating signals?

Posted on June 05, 2014 at 14:46Hello, I am very new in STM32F103 CPU and I need to make very simple program. I need to generate PWM signal with definned on-time and off-time.The on-time must be in range from 1us to 1000us, step is 1 us. The same wi...

dvoraj45 by • Associate
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while(!DMA_GetFlagStatus(...)); never pass ....

Posted on May 30, 2014 at 11:31 Hi, I have a big problem,I try to use a WS2812 (LED card), with a stm32f4 But it doesn t work at all .... I try in debug and the program is blocked here:while(!DMA_GetFlagStatus(DMA1_Stream5, DMA_FLAG_TCIF5)); plea...

hibou by • Associate II
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STM32F2 DMA-SDIO and excessive stall on writes

Posted on June 05, 2014 at 04:21Hi All,Using any type of SD card (SD,SDHC,SDXC) DMA reading from the cards works consistently (With an XC card, can obtain 12-15 MB/s)Writes are typically 2-6 MB's, but every so often, the DMA-write stalls for up to 2...

Putting a variable in code memory

Posted on June 04, 2014 at 22:15Hi,I want to declare an array of constant values and have them put into code memory.Something like this:const uint16_t my_array[4] = {0x3456, 0x789A, 0x1234, 0x9876};I want to be able to download the code and then sta...

munger by • Associate II
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Delay function using timers

Posted on June 04, 2014 at 18:42Hi, i want to make a  delay function using timers using stm32f4 discovery.Unfortunatelly i have no idea the start. I read the timers doucmentation but it didn''t help me a lot.Can anyone guide me please?

d4ng3r09 by • Associate II
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SDRAM on STM32F439_Eval platform and demo project

Posted on June 04, 2014 at 21:19I was wondering what the SDRAM is used for in the demo project on the STM32FR439_Eval platform. Is the SDRAM used as frame buffer for UI or anything in the demo? Or is it only ever exercised in one of the tests? Also,...

kartik by • Associate II
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F103 Input capture too slow

Posted on June 04, 2014 at 19:27I have a high speed clock at 10 MHz going to the processor's TIM4 input capture pin (ch.3). I would like to verify that the clock is running at 10 MHz with the processor's input capture. I coded the processor with the...

stm32f0 Adc Issue

Posted on June 02, 2014 at 19:41 Hi every body, I am using stm32f0 to control a water control systems by getting a value from a temperature sensor which is read by the ADC. I am trying to activate my system 15 secondes each 30 secondes, 4 ...

d4ng3r09 by • Associate II
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