STM32 MCUs Products

cancel
Showing results for 
Search instead for 
Did you mean: 

Forum Posts

STM32L051C6 SPI DMA extra ghost byte

Posted on May 27, 2015 at 15:33Hi, I have discover there is one extra ghost byte is sent in SPI. I have monitor the memory area of DMA TX buffer, the data there is correct, but I will receive one extra byte in the beginning.Here is my code/* Buffers...

scc by Associate
  • 289 Views
  • 0 replies
  • 0 kudos

Start-up time too long

Posted on May 27, 2015 at 09:51Hello there,I've noticed that the in my application the start-up time, i.e. the time from power-up to the first instruction in main() is about 7 to 8 ms. This seems very long to me.I'm using a STM32F103RC and the IAR c...

roman1 by Associate III
  • 3299 Views
  • 8 replies
  • 0 kudos

Access ''MCU device ID code'' on STM32F103

Posted on May 27, 2015 at 03:29Hi, I'm writing a bootloader, and need to determine the device density and flash size. I can read the flash size OK, from memory address 0x1FFFF7E0 However I can't seem to read the ''MCU device ID code'' , which is des...

SPI clock looks to be floating when not driven

Posted on May 27, 2015 at 09:56 Hi, I'm using spi to read and write from an spi flash part, which is working the vast majority of the time. Occasionally I get an incorrect value. Looking at the signals on a logic analyzer the spi clock s...

stenasc by Senior
  • 544 Views
  • 2 replies
  • 0 kudos

USART Loopback with STM32F107

Posted on May 20, 2015 at 11:35 Hi, I would make a loopback with my board STM3210C using USART2. I use the code /public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/Flat.aspx?RootFolder=https://my.st.com/public/STe2ecommunities/mcu/List...

loic by Associate II
  • 1787 Views
  • 13 replies
  • 0 kudos

RCC_AHB1PeriphClockCmd could not be resolved

Posted on May 23, 2015 at 07:33 Hello again, Im decided to switch my first project stm32 from the HAL driver library to the SPL. I was able to get a blinky program working using the STCubeMX software and Kei1 with the HAL drives, but i wa...

yoma1993 by Associate II
  • 1524 Views
  • 5 replies
  • 0 kudos

STM32 discovery board SPI receive

Posted on May 26, 2015 at 20:50Intro I am using the STM32 Discovery board to talk with sensor that receives and sends data packet on SPI1. I have unpopulated U5 on the discovery board so that it lets me use the SPI1 port. I can send the data packet ...

gmali9 by Associate
  • 490 Views
  • 1 replies
  • 0 kudos

Quadrature encoders on STM32F4

Posted on April 29, 2013 at 14:47 Hi everyone and thanks in advance for your advices. I'm using a quadrature encoder from Bourns : http://www.bourns.com/data/global/pdfs/pecpdf#search=%22PEC11%22 with an STM32F4 chip. I h...