Hello, i'm trying to execute a delay code from CCM memory but the MCU is frezing when enter to 'delay_ms' function. It is the first time that i try this and i don´t know if the linker file, and the startup file modifications are good implemented so i...
I need to trigger a timer updateEvent at a rate ranging from 2 BeatsPerMinute to 1000 BeatsPerMinute. I can get the correct range by setting the timer's prescale value from 1 to 30,000 but I need to land on precise BeatsPerMinute integers. If I set t...
I want to implement the oversampling feature in the ADC read to get a better resolution for my values. Data is transmitted directly using DMA.If I enable oversampling, I can correctly get an average value when putting a 16x oversampling ratio (the ma...
Posted on January 22, 2018 at 20:31Hello everybody!I want to make a simple VoIP client handling SIP and RTP protocols. It needs to be very simple (connect to the VoIP server, make a call, pick up a call, end call), fast and reliable. I'm wondering ...
Dear experts,Still not sure after reading the fine manuals. On CM7 (STM32H7, F7) if I and D caches have never been enabled after reset, can speculative data fetch and instruction fetch still occur?Is speculative access independent from caching?
Hi all,I am using a custom board designed using mcu STM32 L071CZ. I want my device to go to stopmode afte doing a certain task. I checked the current consumption in run mode, it is almost 4.7mA and in stop mode in 3.56 mA.I haven't enabled any othe...
Is it somehow possible to turn on ETM trace while STM32F4xx is running in bootROM? So far I wasn't much successful. I don't know if it's due timing (correct frequency) or that MCU uses internal HSI oscillator by default.ETM in "normal" programs is no...
I'm working on small (GCC/C-language) tests of STM32F051 with STM32CubeIde 1.8.0 on STM32F051 target. These tests are being done ---> without HAL, CMSIS or Lower Level drivers <---, so your patience is appreciated (that is, I don't intend in these te...
If the Data cache is disabled to solve dma data coherency, it reduce performance a lot? I know functions SCB_ClearDCache(), SCB_InvalidateDCache() to solve that issue. But there is a risk that an error message will not occur even if omitted by mista...
