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Forum Posts

Using string type in C with STM32F4

Posted on October 28, 2013 at 15:54Hi everyone,I have to handle strings in my code and I don't know how to use this type of data. I assume that it comes with the compiler I'm using (gcc arm-none-eabi). I found and declared 'string.h' at the begining...

STM32L1: Routing Interface - How to use?

Posted on October 26, 2013 at 15:11Hi, the STM32L1 have an interesting new feature which is named ''Routing interface''. Has anybody used this already, or is there any application note describing its use in more detail than the Reference Manual?

flyer31 by Senior
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STM32 Discovery+OV2640 image too dark

Posted on October 28, 2013 at 04:14Hi everybody,I'm working with OV2640 and i've problem with brightness. I use TFT LCD to display, use config from STM32F4xx_DSP_StdPeriph_Lib ( dcmi_ov2640.c). DMA and DCMI working fine but the image i receive too d...

Clock problem

Posted on October 28, 2013 at 10:53I work with STM32F103RBT6. In stm32f10x.h i set  #define STM32F10X_MD, it leads us to : #define SYSCLK_FREQ_72MHz 72000000 in system_stm32f10x.h. So SystemInit() function should go to SetSysClockTo72(). However on ...

jenya7 by Associate II
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SystemCoreClock Reading incorrect value?

Posted on October 25, 2013 at 10:54Hi, I am working with STM32F401 discovery board. I set up the system_stm32f4xx.c file so that the system clock becomes 84MHz(I used Excel based stm32 clock generator tool to get PLL values). void Delay(uint32_t dl...

Suggested settings for PDM filter at 8KHz sampling

Posted on July 29, 2013 at 23:52What limitations are there within the PDM filter library? I'd like to be able to record with FS at 8KHz...the original project files show 32KHz spi configuration but FS at 16KHz and the low cutoff at 8KHz; if I want t...

STM32_USB-FS-Device_Lib versus STM32F10x_StdPeriph_Lib

Posted on October 27, 2013 at 15:00Hello,I am compiling with the ARM GNU toolchain for the STM32F103 family, and want to adopt CMSIS as I believe that is will ease programming after I climb its learning curve.It appears that the STM32_USB-FS-Device_...

pgregson1 by Associate III
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Input Capture Example for STM32F303

Posted on October 26, 2013 at 10:33Hi,Dear all, I am new to this series. Specially I am unable to find examples on it for this version and I have a limited time to implement input capture to measure frequency between 210KHz-510KHz.I am using Timer 1...

contact2 by Associate II
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Issue on use DFU on STM32L Discovery

Posted on October 25, 2013 at 18:34Hi, I am working on the DFU recently.1. I modified a STM32L Discovery board with STM32L152RBT6 to have USB capaility. http://www.st.com/web/catalog/tools/FM116/SC959/SS1532/PF2509902. Then I loaded the ''Device_Fir...

SD Card Bootloader, FAT FS Filesystem, USB Mass Storage

Posted on August 27, 2011 at 08:10I have been reading and learning on this forum for awhile as i worked through my first decent size project with the STM32. I thought it was about time i posted up here and contributed some code :) I have just got a ...