STM32 MCUs Products

cancel
Showing results for 
Search instead for 
Did you mean: 

Forum Posts

STM32F4 Usart1 problem

Posted on October 18, 2012 at 11:01 Hi, Im using a STM32f405RG and i am trying to get a simple USART example to work. I load the following code to the mcu: #include ''stm32f4xx.h'' #include ''stm32f4xx_gpio.h'' #include ''st...

thommagn by Associate II
  • 798 Views
  • 7 replies
  • 0 kudos

Literal error in stm32f10x.h?

Posted on October 18, 2012 at 11:15In STM32F10x Standart Peripherals Library v3.5.0, stm32f10x.h, line 3616:&sharpdefine  DMA_CCR7_PSIZE            ,         ((uint16_t)0x0300)Not needed comma? #stm32f10x-spl #error

frequencies of STM32F4

Posted on October 17, 2012 at 11:48Hi everyone!I'm new to the world of microcontrollers, these days I'm doing my first espeienze with STM324 discovery, I'm reading the various manuals and trying out the various examples, but I can not understand how...

betuel by Associate II
  • 501 Views
  • 3 replies
  • 0 kudos

Disabling_SysTick timer

Posted on October 18, 2012 at 08:59Hi everybody. I used SysTick timer as a counter of time in my application throug using of interruption. I found ''SysTick_Config'' function in core_cm0.h file. This function load time to reload register and switch ...

SPI DMA and CRC

Posted on October 18, 2012 at 11:41I submit a problem with crc calculation in a spi communication with dma facilities:I receive on STm32F103 some spi frame (14 bytes with CRC included) with the attached code.At reception of the frame, the crc calcul...

32kHz resonator with 12.5 pF - what will happen ?

Posted on October 17, 2012 at 11:38Due to an error in manufacturing we have a lot of modules with a 32khz resonator with 12.5 pF for low speed external clock and two 27pF aditional capacitor to ground. Prozessor is the STM32F103RCT6. The real time ...

colsman by Associate II
  • 597 Views
  • 4 replies
  • 0 kudos

STM32F1x periodic external pulse counter

Posted on October 17, 2012 at 01:49Hi All,I’m using an STM32F103x.  I need to count the number of external pulses from a hardware detector, and take a snap shot of the pulse count at a precise frequency of 100,000 kHz.My current setup uses TIM5 CH...

cameron by Associate II
  • 543 Views
  • 5 replies
  • 0 kudos

DMA between external SRAM and LCD on FSMC

Posted on October 16, 2012 at 22:58 hello, i am trying to learn how to use DMA for frame buffer. Idea is to manualy fill SRAM with data (10k points each 16b) and send to LCD by using DMA. FSMC_Bank1_NORSRAM2 and adress: #define B...

linas2 by Associate II
  • 940 Views
  • 7 replies
  • 0 kudos

F37x documentation inconsistency--comparator port B

Posted on October 08, 2012 at 19:36Which to believe-- STM32F32x datasheet (Sept, Doc ID 022691): Page 40, Table 15, Alternate functions for port PB, shows COMP1_OUT and COMP2_OUT for AF8 on PB8 and PB9.  Table 14, port PA, shows PA0/PA6/PA11 and PA2...