STM32 MCUs Products

cancel
Showing results for 
Search instead for 
Did you mean: 

Forum Posts

How can I return from sleep mode on stm32f401

Posted on October 03, 2014 at 14:28Hi, I'm facing with a strange problem, in fact I'm working on Discovery platform to study the stm32f4 low power modes. I'd like to enter and exit from sleep mode and to do this I use an UART to send the command to ...

DUrbano by Associate III
  • 1143 Views
  • 8 replies
  • 0 kudos

Cascaded Timer Causes Delay

Posted on October 03, 2014 at 16:14Using the STM32427, with TIM5 set up as a master to TIM1 and TIM8. This works fine; I get synchronous pulses like I expect. However, I'd also like to have TIM1 act as master for TIM4. When I enable TIM1 in master m...

jvavra by Associate III
  • 269 Views
  • 1 replies
  • 0 kudos

STM32F4 potentiometer and ADC

Posted on October 01, 2014 at 17:23 HI, I want to read the value of a potentiometer; I have this ADC: #include ''stm32f4xx_adc.h'' #include ''stm32f4xx_gpio.h'' #include ''stm32f4xx_rcc.h'' #include ''pwm2.h'' void adc_configur...

pano by Associate II
  • 1965 Views
  • 5 replies
  • 0 kudos

STM32F4 tutorials?

Posted on October 02, 2014 at 19:55Hi everyone, So i wanted to get into ST ARMs microcontrolers. I only used TI Tivas before but i wanted to try out the ST ones.Well i would like to know if anyone could provide some links to tutorials and such. My m...

luis by Associate II
  • 644 Views
  • 4 replies
  • 0 kudos

STM32F4 ADCs Can Achieve 2.4MSPS?

Posted on October 02, 2014 at 15:36Hi,I�m running a single ADC in continuous mode with fADC = 21MHz and expect it to provide 1.4MSPS. I seem to be getting only 0.55MSPS. Can anybody explain why this might be?According to the STM32F407xx Datasheet (D...

h239955 by Associate II
  • 1474 Views
  • 6 replies
  • 0 kudos

Question about external RAM and SD

Posted on October 02, 2014 at 17:05Hello,I try to test my application with a new setup with external SRAM on the STM3240G kit, for heap and stack.I use FatFS on SDIO which needs DMA. When I read a file there is a problem.I know it is not possible to...

pcu by Associate II
  • 568 Views
  • 3 replies
  • 0 kudos

STM32L152 rtc battery

Posted on October 03, 2014 at 01:48The STM32L152 is working. Also the external 32KHz is driving the rtc. If I connect a battery to VBAT pin the oscillator stops working if main power go down. There is also no current from battery to VBAT. In running...

peterd by Associate II
  • 344 Views
  • 1 replies
  • 0 kudos

clock division

Posted on October 02, 2014 at 21:51Hello,       I am having hard time to figure this out. in the data sheet it is mentioned that the STM32F407 works at a maximum clock of 168 Mhz, but using any module timer, PWM or any other the clock is divided by ...