question about RCC_CCIPR of STM32L431
Posted on March 09, 2017 at 04:08HI,i found that some peripheral can select clock source by change RCC_CCIPR.but both ADC and CLK48M,default clock source is ''No clock selected'',it can work normal also.why?
Forum Posts
STM32F437 USB VBUS sensing intermittently fails to detect disconnection
Posted on March 08, 2017 at 23:45We have a device which is self powered USB peripheral, using the ST provided USB stack, I'm seeing the device fail to detect the loss of VBUS (notified via the SEDET interrupt). It works approximately 70% of the time...
No QFP32 Parts with > 64 kiByte in the wild
Posted on March 07, 2017 at 11:40When looking for QFP32 part with > 64 kiB, the MCU Finder brings up STM32L0[7|8]2KZT. However the web page of these parts shows no distributor availability. Can we expect these parts available anytime (soon)?
Resolved! DCMI + FMC on STM32F7
Posted on March 08, 2017 at 17:57Hello!From a cursory glance at the datasheet it seems like there are many pin conflicts between DCMI and FMC on the F7. Does that mean they cannot be used at the same time?Isn't that a bit of an oversight, considerin...
USART missing characters stm32f10x
Posted on March 07, 2017 at 21:16Hi,Here is my transmission code:void USART1_IRQHandler(void){ if (USART_GetITStatus(USART1, USART_IT_TXE) != RESET){ if(Counter<=65 && TX==1){ if(MESSAGE[Counter]=='\0'){ USART_ITConfig(...
hard fault handler (main load)
Posted on March 06, 2017 at 18:38Hi, I have a problem when I try to load my program. I use the arm compiler (armcc) with a stm32l073.When I use my debugger I have an Hard Fault handler every times before the main.I use a standard statup file (startu...
SDcard used like FIFO its possible ?
Posted on March 08, 2017 at 12:11Hi,i have a little project working on stm32f415, with a task producer and a task consumer, between i want put a SdCard ( with fat ) like cache, because if something going wrong during trasmission or consumer is busy ...
3 USART DMA on STM32F405
Posted on March 07, 2017 at 02:29Hi,I'd like to use 3 USART DMAs on STM32F405.If I use only 1 USART DMA, it works well.But if I initialize 3 USART DMA in 1 workspace, only the last one works.Below are my configurations.#define USARTx USART2#define U...
STM32F401 custom software interrupts
Posted on March 08, 2017 at 16:17Recently I started using STM32F401 as an application chip together with nRF52 for BLE connectivity. This required some parts of nRF52 SDK to be ported for STM32. However, I had some problems with software interrupts ...
STM32F429I-DISC1 board external power supply
Posted on March 07, 2017 at 06:32I'm planning to power the board up via external power supply. After looking at its schematic diagram, I found that one can supply power through 5V pin or 3V pin on the headers. But I wonder if you could have problem,...
