Forum Posts
Linker Time Optimization introduces glitch/noise into Timer DMA controlled PWM
Hello,I have an application on an STM32F042 microcontroller, and it uses Timer 2 configured as PWM output and is transferred over DMA.To fit the whole code into the small 32 KB flash memory, I am forced to use -flto (Linker time optimization). Howeve...
DMA to receive unknown length frames with UART
HiI need to listen to Rx UART to receive unknown length frames (I will search for a frame start byte, then read the frame size and then test a CRC for frame validating)I would like to use DMA for performance but I only see half or full reception int...
SPI Transmit only last word of byffer
HiI'm trying to transmit 4 16-bit words via SPI as slave using interrupts and HAL.I'm using STM32F107VCT6So I specified a buffer:uint16_t buf[] = {0x000F, 0x00F0, 0x0F00, 0x0004};And started to transmit in main:MX_SPI2_Init(); HAL_SPI_Transmit_IT(&hs...
is it possible to set different channels of timerX for different mode at same time?
suppose timer2 has 4 channels , i want to use channel1 as input capture mode and channel2 as output compare mode. is it possible?? please help me!!!!
Resolved! STM32H7 - SAI sampling frequency is 45.5kHz instead of 44.4kHz
Dear all, I am using SAI in STM32H7 to control an external audio codec. Everything works fine except the fact that when I look at the actual sampling frequency (SAI FS signal ) I measure 45.5kHz rather than 44.1kHz as specified in the init. The clock...
Question about DMA
I have few question about DMA.1)Is that callback function need to be register?2)During the memory copied the source to the destination using DMA is that necessary need include the callback function?CH
Updated REACH declaration for the product: STM32F031C4T6TR
I am in need of an updated REACH declaration for the product: STM32F031C4T6TR The one stated on your material declaration declares conformity to a REACH SVHC list from 2018. Newest REACH SVHC list is from January 2020BrSimon
RTC date update - Problem with VBAT / Low Power Mode
Hi all,I searched the forum for my specific problem, but i did not find any solution for this weird occurrence. On my STM32F103 i run the RTC, which is working fine, as long as it is connected to the USB power. I store the date on 2 backup registers,...
memory to memory DMA transfer
Hi all, i want to ask about except from the reference manual where can i find out more question about the memory to memory DMA transfer.I want to figure out is there trade-off for memory to memory DMA transfer when the data size is big and small?Rega...
