Ask questions, find answers, and share insights on STM32 products and their technical features.
Posted on November 13, 2012 at 21:25 Hi, I have enabled external interrupt (EXTI) by connecting to pin PA4 a button, with its pull-up (I also tried the pull down) but when I pressed the button sometimes is performed twice Iterrupt routine (or mo...
Posted on November 13, 2012 at 22:44With help from this forum, I've developed a lab course using the STM32VL Discovery board over the past year. A draft of the lab manual is available athttp://www.cs.indiana.edu/~geobrown/book.pdfan overview of th...
Posted on November 13, 2012 at 21:20 Hello, i am working on project where i need to save array stored in stm32 to sdcard problem is i was able to make it work using project, but somehow i was unable to crate new file. Idea that i press b...
Posted on November 12, 2012 at 22:53I love the StdPeriphDriver files (inc, src) for all the discovery products. I recently received a Keil MCBSTM32F400 evaluation board that uses a ST32F4407IG. Question is can I port the StdPerhipDrivers from F4 D...
Posted on November 12, 2012 at 20:58The following is my watchdog code. The watchdog is triggering and I am constantly find myself in the startup routine. Why? Here is my watchdog related code: //After Periph Clock set and before GPIO and NVIC set...
Posted on November 13, 2012 at 13:11Hi all Can higher priority interrupt interrupts lower priority in his execution? For example. When I am servicing DMA ISR routine with priority 0x01 and EXTI interruption with priority 0x00 if and only if happens....
Posted on November 13, 2012 at 18:46Hi. My name is Steve. I have some microcontroller experience with AVR, Stickos and Arduino and have recently bought an STM32F4 discovery kit as I am interested in its DAC , DSP and audio capabiiteies. I have some ...
Posted on November 13, 2012 at 11:33I was planning on using an STM32F103RE in a design where the DACs would be part of a control loop, and will need to be used in 12 bit mode. Unfortunately the DAC specifications in the datasheet show extremely bad...
Posted on November 08, 2012 at 15:23Evaluating the STM32F207 for a project. I need to create a triangle waveform, starting from an arbitrary point between two limits, and it needs to be able to start in both incrementing or decrementing fashion. I i...
Posted on November 04, 2012 at 10:25Hello, I am experiencing some troubles recently with floating point calculation within interrupts. I have a dma interrupt running at 400 Khz in double buffer mode. I have an usart RX interrupt coming at 50 Hz. the...
