Posted on February 13, 2014 at 14:07I've set up my DMA to transfer 106 half-words via the SPI to a memory buffer. I am quite confident that my buffer size is correct. However, when the transfer actually occurs, it is twice the size I expect (and is ...
Posted on February 13, 2014 at 20:30Hello, I am working on the STM32F429 with Keil uVision version 5, and am trying to get the USART1 module working. In attempting to use the functions provided in the stm32f4xx USART library files, I am getting very...
Posted on February 13, 2014 at 14:00I use stm32f4-discovery board. I am working with the ADCs, and for my prpose I need to set the ADC reference VREF+ at 3.2V. in the reference manual RM0090 it is said that stm32f4 LQFP100 has VREF+ VDDA pin. But th...
Posted on February 12, 2014 at 18:03I'm using custom code which is somewhat ported from the STM3240-G USBD-MSC example application. I also made modifications to the read/write functions to take blocks as arguments vs. bytes. I've stepped through the...
Posted on February 13, 2014 at 14:11Hi all,I'm using stm32f100c8 with an external oscillator 8MHz to produce a system clock of 24MHz. All the peripherals are on the default division lines.Now the ADC1 which is with the TIM1 on PCLK2 is supposed to r...
Posted on February 10, 2014 at 10:39HiI'm using STM32F373x SPI in slave mode. I get errors in about 0.1% bits transmitted, occurs in 50% of units from first production series of custom board. SPI lines have RC filter installed to improve EMC immunit...
Posted on November 07, 2013 at 12:13Hi, I if will be great if some one clarify me the following, * What is the default interrupt priorities? When I read using either priority4 = NVIC_GetPriority(UART4_IRQn); orpriority4 = NVIC->IP[EXTI4_IRQn];...
Posted on February 13, 2014 at 09:34Good day,Like topic said, the alarm handler does not to work, but if I do like this:while (!RTC_GetITStatus(RTC_IT_ALRA));printf(''\nALARM''); //it worksHere is my code: int main(void){ NVIC_InitTypeDef NVIC_Ini...
Posted on March 15, 2013 at 08:39Hi! The Discovery board based on f407 served me as a starting point in preparing a course on the use of microprocessors for local students, which do not have much experience with hardware, but are familiar with the p...
Posted on June 10, 2013 at 23:31I noticed something strange with the CAN_TransmitStatus function in the stm32f10x_can.c (V3.1.2) peripheral driver code. Most of the time it works fine but occasionally it returns the wrong status. The root cause is i...
