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STM32f407 the timer6's frequence

Posted on October 05, 2013 at 04:14 TIM6 Update event occurs each 37.5MHz/256 = 16.406 KHz the words in the DAC exemple.    I want to know how to get the 37.5MHz ,how to calculate it out.Thank you for your help.

TIM4 CH3, CH2, CH1 now working

Posted on July 29, 2013 at 15:49help again, I work with a four-timer but it does not work the channels one, two and three. I initialize them but they do not give a PWM.CH4 working very good!My code:void init_pwm( void){    TIM_TimeBaseInitTypeDef TI...

svarog995 by • Associate II
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  • 8 replies
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CANopen on STM32: Free API, Driver or Firmware Library

Posted on October 05, 2013 at 00:25I am interesting to learn the CANopen protocol. I would drive an electrical motor by CANopen interface. For this reason I am finding a CANopen stack, api, driver or firmware library free or open source. Can anyone ...

swd programming and 3.3v power ???

Posted on January 26, 2013 at 16:19Hi all, I've had great difficulties setting up my own STM32F405 board and having it actually run, but finally I've succeeded booting it and programming it from my stm32f4Discovery. However I have a very strange b...

issue with USB CDC

Posted on October 04, 2013 at 16:00Hi All, i'm using STM32F407, USB Device library V1.1.0 / 19-March-2012, i'm able to receive from PC to STM bytes using CDC, but i'm unable to send to PC from STM :( i modified function like this : static uint16_...

Parallel output of 8bits

Posted on October 04, 2013 at 11:13I have found working solution. But for me it look ugly.uint8_t command = 0x55; uint16_t u16Temp = 0; u16Temp = GPIO_ReadOutputData(GPIOA)&0xFF00; u16Temp |= command; GPIO_Write(GPIOA, u16Temp); Is there better way ...

pchala by • Associate II
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  • 3 replies
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STM32L151RD inexplicable/weird crash

Posted on October 03, 2013 at 17:15 Hi, I developed an application using the STM32L152D Evaluation board and everything was working as expected. The application was then moved to the actual project which uses a STM32L151RD microcontroller...

andrei by • Associate II
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  • 7 replies
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DMA and two or more U(S)ARTs

Posted on October 03, 2013 at 09:50Can I configure two usart's to use one DMA? In datasheet there is table called ''DMAx request mapping'' and for stm32f40/1/2/3 eg. UART4 uses channel 4 for RX and TX DMA trigger on stream 2 and 4. Can I configure s...

pawwodko by • Associate II
  • 732 Views
  • 3 replies
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STM32 F0 hangs when using USART & interrupts

Posted on October 04, 2013 at 04:46Hi, I'm trying t owrite robust code for USART communication with embedded modem like module. Since communication is not strict command-response manner, but module can send messages also in asynhrounous manner (spor...

STM32F407 DMA USART Issue?

Posted on September 20, 2013 at 17:30Hello, I am using a STM32F407. My application needs both USART1 and USART6 to concurrently receive data. I would like to use DMA2 to transfer data received from each USART to external RAM via the FSMC and ensure...

jnalasco by • Associate
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  • 4 replies
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