Forum Posts
Resolved! STM32H7 cache and DMA transfer error rate.
Hi.It seems, that sometimes data in cached memory is corrupted.DMA transfer data from SPI to SRAM2 (0x30000000). I use ping-pong buffer in SRAM2 (two similar buffers). Data processing performing for first part of the buffer in thread, while second it...
Resolved! QSPI from Dual to Single flash mode
Hello, I tried to start QSPI working on a Single flash mode but have a problem with non readable part config registers (NonVolatile, Volatile and Enhanced Volatile). As I understand when working in Dual Flash mode this registers should write and read...
Observing the different execution time for a function if placed at different code memory location on STM32F765NIHx controller.
e.g: Below are the execution time of memset() function at different locations.1. memset() plcaed at 0x0000000000219e96 : Time = 57.10 usec for 3k buffer size.2. memset() placed at 0x0000000000219d42 : Time = 28.66 usec for 3k buffer size.- memset is ...
STM32H7 ADC + DMA working partially
Hello,I am using the ADC1 + DMA to sample 10 analog channels on the CM4 without any MPU config. When I remove any external trigger e.g. 3.3V power source on the analog channel, and I start sampling all 10 channels via the DMA , all values inside the...
STM32H7 ADC with DMA not working, Cache disabled
Hi,I am trying to use the ADC with DMA but the values on the buffer are not being updated. Next i detail the steps that i have done:Disabled the ICache and DCache.Place the DMA buffer in a separate section in RAM_D2 with the address 0x30000000, so th...
Resolved! How many interrupt by an exception having higher priority can be executed?
The execution of an interrupt handler can be preempted by an exception having higher priority.How many interrupt by an exception having higher priority can be executed?In the link below, two interrupts are generated. Is this number infinite?
Alternatives to STM32L4A6ZG?
I can't get the SDMMC working with DMA on the STM32L4A6ZG, so I'm looking for alternatives. I've already started down the path with the NUCLEO-144, so I'd prefer something that I can get on that. I've heard (from Tesla DeLorean) that "the L4 has at l...
