Ask questions, find answers, and share insights on STM32 products and their technical features.
Posted on May 30, 2014 at 15:15 Hi Is there a way to disable interrupt nesting (preemption) on the STM32F3Discovery? By default, an interrupt seems to preempt a currently executing ISR. But I want the ISRs (especially those of DMA and EXT...
Posted on May 05, 2014 at 08:19Hello I use the comparator module of a STM32F051. The problem is that I need to change the input pin of the inverting input on the fly. In the datasheet, for COMP1 module, the input pins PA0, PA4 and PA5 are possible s...
Posted on May 21, 2014 at 00:25Hi,I'm using the STM32F4 Discovery board. I have a program that outputs voltages with the onboard DAC and reads voltages with the ADC. For some reason when the DAC is outputs a voltage it lowers the readings of the ADC...
Posted on May 29, 2014 at 22:26stm32f4 general performance #worst-forum-software-ever
Posted on May 29, 2014 at 12:54 Hello everybody. I have a problem whith USART. I send data to my STM32F4 through USART3, everything works fine. But when I stop to send datas, the USART RX interrupt still receive the last char sent each ti...
Posted on February 14, 2014 at 18:01Hi All,reading the reference manual of the STM32, I have a question related to a transfer peripheral to memory using DMA, direct mode ( no FIFO )In section 9.3.12, Direct Mode paragraph, i found:Direct modeBy defa...
Posted on May 28, 2014 at 20:27Hello again Gentlemen!I would like to download some sample code to help me to program the USB peripheral to use it as a Virtual COM port. I guess on the PC side I have to install the ST Micro Virtual COM port driver, r...
Posted on May 28, 2014 at 00:02Hi,I'm trying to configure the UART in DMA mode, but I cannot get the interrupts to work.I have attached my code.Any help will be appreciated.Thanks
Posted on May 29, 2014 at 16:15I need some help in understanding the Bus Turnaround time of the FSMC. I think I have it right, but don't want to burn out the data bus in finding out I'm wrong. Could someone who knows, confirm please? My STM32F207 ha...
Posted on April 18, 2014 at 22:04Hi I configured the timer in encoder mode with prescaler:RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE); RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_P...
