STM32 MCUs Products
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STM32H533 DCACHE seems to make no difference?
So I've got a program with a fast tight loop doing some minimal things, and the rest is housekeeping/UI stuff in the main loop. When I enabled ICACHE, the speed of the tight loop increased DRAMATICALLY and overall the process is faster at basically e...
Resolved! What parameters to use for the external MX661G45... Flash on the STM32H7S78-DK
Datasheet for the Macronix flash is not available on-line. Can someone tell me about the correct parameters needed for the Macronix MX66UW1G flash?The number of sectors (used 32), sector size (used 4096), page size (used 0x100), chip select high time...
Resolved! SPI MOSI stays high after DMA transfer - depending on transmit size not value
uint8_t my_buffer[ 1B_LEN_PREFIX + 24B_LEN_DATA + nB_LEN_SUFFIX ] = {0}; (void) HAL_SPI_TRANSMIT_DMA(&hspi2, &my_buffer[0], sizeof(my_buffer)); I'm using the SPI TX line only to drive an addressable LED, making a custom waveform from SPI bits to...
Resolved! I need to use SPI without a clock, Cube MX won't let me do it.
It's a niche application. STM32H5 QFNI need SPI2_MOSI to make a specifically shaped wave. SPI is works well for this. I do not need the SPI_CLK pin/function. I set Cube MX to SPI2 Transmit Only Master, and of course it applies the CLK pin because alm...
Resolved! STM32U5A9 Octal SPI with octal flash in DTR mode
Hi Team, I am working on STM32U5A9J-DK for one of our applications interfaces with an Octal flash via Octal SPI. we were able to communicate and do the flash operations Read write using the SDR mode . Now to achieve the DTR mode from STM32U5a9 end ...
STM32G4 USART - Busy Flag and Timeout operation
How does the (USART_ISR) BUSY flag get reset? The data sheet indicates "end of reception," but that is not defined. Is it an end-of-frame, idle event, or something else?
Resolved! STM32H573 SPI clock not working
I am following a basic example from stm32: Getting started with SPI - stm32mcuI follow the steps for setting up SPI master with polling (Blocking mode). I did make sure to select the board STM32H573 DK instead of the one listed in the example.I initi...
Unable to communicate between two Nucleo board using SPI
I am writing sample demo Application to test data transfer between SPI Master(Nucleo F411RE) and SPI Slavee(Nucleo H755ZI-Q) device.Master SPI:/**SPI2 GPIO ConfigurationPC2 ------> SPI2_MISOPC3 ------> SPI2_MOSIPB10 ------> SPI2_SCKSlave SPI:/**SPI1 ...
DMA: last written buffer position?
DMA buffer 32 words, ADS converts 4 channels in scan mode.So every 8 ADC-starts DMA will start at buffer[0] (circular buffer is ticked).CubeIDE HAL is being used.How do I find out / look up the buffer offset most recently written to?
