Forum Posts
SPI RX->DMA stops running when debugger is allowed to resume
I'm trying to run SPI2 (Master Receive Only) such that it continuously DMAs data from the slave. The problem is, it only works when I step over the HAL_SPI_Receive_DMA line... at which point I see SCLK, and it will run forever, until I "resume" th...
Wakeup from sleep HAL_TIM_PeriodElapsedCallback interupt on a STM32L031 commenting out HAL_PWR_EnableSleepOnExit (); and HAL_SuspendTick(); the LED flashes
Im trying to reduce power by putting the a STM32l031 to sleep between timer interupts. It goes to sleep but never wakes upvoid HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef * htim) { if (htim -> Instance == TIM21) { Strobe++; if (Strobe==8352){ ...
DMAMUX - how to trigger Request generator from DMA? RM0440 Rev 4 documentation request.
I'm trying to generate a cascade of DMAs:1) HRTIM trigger ADC. 2) On ADC conversion completion, DMA ADC results to memory.3) On ADC DMA transfer complete, DMA memory to different peripheral.When a DMA occurs, the DMA request multiplexer generates bot...
Enabling LSE clock on PA8 from HEX code?
I am unable to communicate with the MCU via UART (115200 bit/s). It looks like the program inside MCU is not running. I think the problem can be probably in not running LSE 32.768kHz crystal oscillator.Is it possible to enable LSE clock on PA8 if I h...
I2S data gets corrupted
Hi there,I am trying to do some digital signal processing on a STM32G031F6 by interfacing an SPH0645 MEMS microphone via I²S. I'm running into strange issues however, that I haven't been able to solve in the last few days. I am switching to an analog...
Dealing with compiler problems (over-optimizing to nonsense)
Hello.Very frequently I end up chasing problems that not suppose to be in first place.Here is example ( making 32b counter of 16b by counting overflows)volatile void Delay_ms(uint32_t ms) // delay in ms { time = 0; time_start = LPTIM2->CNT; o...
Resolved! STM32F4 DFP HAL Drivers Compatibility with ARM Compiler 6
Just started to migrate to the ARM compiler 6 and I noticed __weak is incompatible language extension in this version and it needs to be written __attribute__((weak)).In STM32F4 HAL Drivers and almost all of the STM32 MCUs, there are lots of function...
Resolved! Timer and interrupt triggered by one I/O line?
Hi all,is it possible to use the same GPIO-pin as Timer external trigger and falling edge external interrupt.I'd like to create an application in which a rising edge on a GPIO starts a timer that sets an output for, say 2ms. After this time, another ...
Resolved! STM32F051r8t6 SPI initialization issue
Hello.I'm trying to use SPI interface in STM32F051r8t6 micro on my STM32F0 discovery board. I got it to send data, but I set data lenght to 8bit, it is sending double that (first 8 is my data, but second 8 bit is always 0x00). When I set it to 4-bit,...
