STM32 MCUs Products

Ask questions, find answers, and share insights on STM32 products and their technical features.

cancel
Showing results for 
Search instead for 
Did you mean: 

Forum Posts

STM32F4 SPI-DMA data is shifted

Posted on December 11, 2013 at 08:19The original post was too long to process during our migration. Please click on the attachment to read the original post.

gcntrk by Associate II
  • 1923 Views
  • 6 replies
  • 0 kudos

stm32f030 jtag connection

Posted on May 02, 2014 at 06:51 hi, i am very new to stm32,i have to make jtag connection also for debugging and programming. i have concerned with stm32f030R8t6 disco schematic but i was unable to find more detail about 20pin jtag as its using st_l...

Who's got success with DCMI ?

Posted on April 28, 2014 at 15:36 Hi there, I am struggling capturing WXGA(1280x1024) images with STMF429 and ov2640 (from STM324x9I-EVAL1 board). SDRAM bandwidth looks just enough to cope with DCMI data and I often catch DMA FIFO errors (sh...

interrupt handling

Posted on March 16, 2012 at 13:33 i am using eCos for my app. i have STM3210E-EVAL board. in my app there is one thread(toggle LED) and external interrupt on PG8. when button is pressed(PG8) another LED should blink once.but nothing... ...

How to program user button interrupt with ecos

Posted on May 03, 2014 at 07:35hi, i'm using a stm32f4 board. and i want to write a program with ecos embeded system that  when i push user button, an interrupt will trigerd and do something. i find the function cyg_interrupt_create(), but i need a ...

DAC Software trigger

Posted on May 03, 2014 at 18:56 Hello, somehow i can't find way to do software trigger to start DMA transfer of memory array to dac. Original idea is to fill data array with my wavefrom, and use software trigger to start DMA transfer. Origin...

Temperature sensor in stm32f4-discovery problems

Posted on May 04, 2014 at 09:41Hi everyone, I'm trying to read temperature from temperature sensor in stm32f4-discovery kit I've configured ADC1 and then read converted value and do some math on it now when debugging it goes to hard fault  why ?? I ...

F103 USB BULK OUT Problem

Posted on May 04, 2014 at 16:04Hello, I am trying to get double buffered USB bulk-out transfers working.The device does enumerate correctly but bulk transfers do not even raise interrupts. This is my EP initialization (usb_prop.c : reset handler: [c...

schlenkj by Associate
  • 630 Views
  • 2 replies
  • 0 kudos

question about DMA

Posted on May 04, 2014 at 16:44I have an ISR, in which a DMA transfer will take place when the ISR is running. Although DMA transfer does not occupy CPU's running time, but occupies the Data bus. So will the DMA's existence lengthen the ISR's execut...