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Posted on June 12, 2014 at 10:34There is a problem, when I using FPU in some RTX task because FPU instructions is also used in RTX's SVC_Handler. So I've decided or disable FPU globally in project (didn't work, cant compile HAL_CM4.c) or disable for...
Posted on January 27, 2014 at 23:27Given an F4 (F405 and F429) or even F2 .. Is it possible for a DMA to be both MemoryToMemory and have the rate of delivery be set by a timer? ie: I'm effecting a copy from an array in RAM, to a GPIO. (a byte at a t...
Posted on June 10, 2014 at 00:33Can you use a single timer to make a quadrature divider? What I mean by this is can you take in a quadrature signal, have the timer increase its CNT register and then toggle channels 3 & 4 based upon a particular CNT ...
Posted on June 11, 2014 at 00:24Hello All, I'm trying to implement a CAN bootloader to flash my firmware over the CAN bus network. I'm using the OLIMEX STM32F405 board with CAN transceiver hooked up to both CAN peripherals. I wrote a host applicatio...
Posted on December 11, 2013 at 20:54I am attempting to erase a FLASH sector, but the process hangs. Any ideas on why this might be happening? FLASH_Unlock(); FLASH_ClearFlag(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPER...
Posted on June 11, 2014 at 10:58Hello,I can't found a guideline for migrating from STM32F2 (207) to STM32F4 (429) on st.com. I find only STM32F1 to F2 or F4Has anyone docs or note about it? Or some reference to doc...Are there any different between ...
Posted on September 25, 2012 at 00:36When I use DMA on the transmit SPI2 chanel (STM32F205) I consistently get FIFO errors at the end of the transfer, even though the FIFO is disabled. I verified the DMDIS flag is 0 in the DMA_SxFCR register but th...
Posted on June 10, 2014 at 04:55The scenario is as following:1. Data is transferred by DMA from a camera or from an ADC via SPI to SRAM2. Computation should be performed based on the incoming data.3. The computation includes multiplication with look...
Posted on June 10, 2014 at 22:51 Hi all; I'm trying to make two boards communicating with SPI. The Master is a board based on PIC µC and the slave is Discovery F3. The protocol that i have to establish is as follows: 1) The master...
Posted on September 23, 2012 at 12:34Hello. I colided with the following problem: ADC1 doesn't start conversion in injected channel from TIM1 CC4 event. Below I quote a piece of code of my initialization of ADC1 and TIM1:RCC->APB2ENR|=RCC_APB2ENR_TI...
