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

USART RX - HOW IT WORKS ?

Posted on April 19, 2013 at 16:43 Hello, I'm quite a newbie with USART RX, I read a lot of code examples but I don't exactly understand how it works. I want to receive MIDI data from a musical instrument. MIDI is a protocol using USART c...

ADC data corruptiom

Posted on April 25, 2013 at 10:53The original post was too long to process during our migration. Please click on the attachment to read the original post.

USART Problems

Posted on October 26, 2012 at 10:57 Hi Guys, Been trying to get the USART to work for a couple of days now and is time to get some help... This is my code: GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStru...

using ch1..ch4 channel of TIM5

Posted on April 27, 2013 at 17:44 Hello, I'd like to use 4 channels of TIM5 as independent pulse counter, but CCR1..4 seems to have some non-sense value. Here's the code: void TIM5_Init( void ) { GPIO_InitTypeDef GPIO_InitStru...

bsimone by Associate II
  • 905 Views
  • 4 replies
  • 0 kudos

CCR2 won't update

Posted on April 26, 2013 at 22:54 Hello, I'm trying to count pulse on PB7 using timer TIM4 ch2. Everything is ok, but I'd like to reset CCR2 so I can start another measure. I tried with TIM_SetCompare2(TIM4, 0); but CCR2 isn't set to 0 after execu...

bsimone by Associate II
  • 611 Views
  • 2 replies
  • 0 kudos

pwm signal for stepper motor

Posted on April 26, 2013 at 12:53hi,I found a problem to generate a PWM signal like this one: i thought that we can do this with TIM1 by insertion of a DEAD TIME but when i inserted a dead time i obtained a signal lîke this one: can someone help me ...

0690X00000602xzQAA.jpg 0690X00000602y0QAA.jpg
feres by Associate II
  • 697 Views
  • 3 replies
  • 0 kudos

F405 DMA1 configuration IMPOSSIBLE

Posted on April 26, 2013 at 17:00Hello to all of you ST lovers,I got a problem : working with ChibiOS (which includes the stm32 libs) I'm trying to enable some DMA actions (to capture a timer value, as it happens). Yet whatever I do in the DMA1 Stre...

Timer triggered DMA transfer

Posted on April 26, 2013 at 10:34Hello,I'm working with a STM32F407 controller board. Right now, I want to trigger a DMA transfer with one of the internal timers (TIM1). The DMA transfer should read one gpio port and put it into the memory. The time...

andreas23 by Associate II
  • 1523 Views
  • 3 replies
  • 0 kudos

Uart (rs232) communication problem

Posted on April 25, 2013 at 01:30 Hi all, i am trying to establish UART communication between µc and PC. this is my code: /* Includes ------------------------------------------------------------------*/ #include ''stm32f10x.h'' #includ...

STM32F4 Interrupts: Clearing and related questions.

Posted on April 26, 2013 at 11:49Hi Just some general questions on interrupts:I assume that external interrupts need to be be cleared. There are some forum threads that are suggesting that this is done ''automatically'' and it does not need to be co...

bl by Associate II
  • 1846 Views
  • 2 replies
  • 0 kudos