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Posted on May 16, 2013 at 19:28 I just spotted some invalid defs in the CMSIS stm32F4xx.h definitions file. In the section on bitband definitions it has entries for backup SRAM, SRAM2 and CCM SRAM: #define CCMDATARAM_BB_BASE ((uint32_...
Posted on March 25, 2015 at 16:47An application requires an external Vref+ of 3.0VDC and Vref- of 0, VDD of the chip is 3.3VDC. Whats the best method to set this Vref+ to the STM32 micro controller?
Posted on July 16, 2014 at 07:46Hi All,Using the standard Cube (F4 v1.30) HAL_SD drivers, I randomly get the SD_TX_UNDERRUN'' error when writing using HAL_SD_WriteBlocks().It happens totally at random.I have tried:- using older libraries - same resu...
Posted on March 03, 2015 at 20:35Hi ST Forum,I want to implement a DMA RS232 device (with a MAX232 transceiver), where if the master sends a certain message (e.g. 0x01), then the STM32 will send back a certain message (e.g. 0x02). I got the DMA Tran...
Posted on March 24, 2015 at 16:34When I look in my startup_stm32f427_437xx.s file. It says: .syntax unified .cpu cortex-m3 .fpu softvfp .thumbShould it say .cpu cortex-m4?
Posted on March 20, 2015 at 13:58I know DMA acts as a channel where the CPU gets bypassed while data is transferred between Memory/ Peripheral,and in the mean-time CPU can execute useful operations..But my question is ...If the DMA transfer is going...
Posted on May 30, 2014 at 04:35Where would one find the source code for the zip file located here:http://www.st.com/web/en/catalog/tools/PF260087 It has some nice examples but only hex files for flashing and not the source code.
Posted on March 24, 2015 at 14:39I need to transmit 5 bytes and after strobe ''update pin'' on ad9951 over and over again with speed about 300-400khz. Start every time transmission for each 5 bytes and strobe on tx complete - will not make it, it's ...
Posted on March 25, 2015 at 12:38Hello!I try to get a deeper understanding of the STM32F4 microcontrollers but there is one thing I do not really unterstand and i could�t find an answer in the literature im reading.What ist the specific difference i...
Posted on March 24, 2015 at 14:45Hello,I want to sent some characters to a hyperterminal program. But my program wont work..I dont receive any characters in my hyperterminal. I am using the STM32-P107 development kit. The controller on it is the STM...
