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DMA running only once

I have Timer configured in Input Capture Mode and DMA2 Channel 6 Stream 1 configured to transfer data from GPIOC to frame_buffer. It works, but only once - after first use there was data and in next transfers there where only zeros. To have it workin...

D��ug by Associate II
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Resolved! STM32F429IET6 RTC power off/on issue

We are suing STM32F429IET6 in our project. The schematics as follow:​if VBAT=2.2~3.6V :backhand_index_pointing_right: :backhand_index_pointing_right: :backhand_index_pointing_right: Power off the VDD and wait 0~180 seconds, then power on again. The R...

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ALee.13 by Associate II
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How to map PA2 to Nucleo CN10:37?

I'm unable to successfully see my PWM signal on the Nucleo STM32F302R8 development board, connector 10, pin 37.I have SB62 and SB59 connected with 0-ohm resistors. I don't understand why the same pin is on multiple pins. Absolute pin number 17 AND ...

Reading data through DMA triggered by Input Capture Timer

Hi,I am new to microcontrollers and this is my first big project. I want to receive data from other device through 8 data lines and 1 clock signal (similar to STM Application note AN4666 ''Parallel synchronous transmition using GPIO and DMA'')I am us...

Resolved! SystemCoreClock variable not initialized when needed.

When trying to initialize external SRAM in the SystemInit() function in system_stm32lf76xx.c, I call HAL_Init which calls HAL_InitTick. This function calls HAL_SYSTICK_Config which uses the global variable SystemCoreClock to initialize the SysTick. H...

Resolved! InvalidateDCache with AXI-SRAM gives HardFault

Hello,I have recently moved RAM from DTCM to AXI SRAM (so that I get more RAM).It then failed in dma example.After investigation I found out that the call to  SCB_InvalidateDCache results in HardFault_Handler.I've changed it to use   SCB_Invalida...

ranran by Senior II
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