Forum Posts
Data transmission is not happening using SPI ?
Hi Team, I am using the STM32H745ZI-Q nucleo board . I am Trying to Transmit the data through the SPI using LL.Here I am using one nucleo board cm7 for transmition and I am using another same model nucleo board cm7 for the receiving. In the transmiti...
Resolved! What is the Clock Speed of the SDRAM FMC on the STM32F469?
Once again I'm struggling to find a clear source for a peripherals clock with STM32 MCU's.Most searching leads me to HCLK/2, so at a max HCLK of 180MHz I get 90MHz.However, looking at there reference manual for the STMF469 I see this:From an example ...
UART DMA error
I'm using a STM32L062 MCU to interface a BLE module via UART. I have setup DMA with idle line detection to receive data of unknown packet lengths. I'm receiving packets from the BLE module and the software seems to be working fine. However, I noticed...
Why does SPI communication with DMA in STM32H745ZI (NUC-H745ZI) using example code is giving varying output?
Hi, I'm using the NUCLEO-H745ZIQ device, and I'm starting with SPI. I used the "SPI Full Duplex communication with DMA example code" in the repository available from "st" (STM32Cube_FW_H7_V1.10.0 folder). It is giving me the expected output but somet...
I would like to drive STM32L011D3 GPIO in output to "1" or "0" with a minimum of instruction. I think we need:1 LDR + 1 ORR or AND + 1 STR = 3 instructions and 5 cycles Is there a more cycle-efficient way to do this?
Is it possible to set an output to "1" or "0" with an instruction of one cycle?
Resolved! What is the detailed difference between VDD_FT and VDD?
Hello, ST expertFrom the picture below, it showes that 5V tolerent GPIO connect to VDD_FT through a protection diode. But what is detailed difference between VDD_FT and VDD? BRYang
single DMA buffer for two timers STM32G0xx
Hello. In a project with stm32g030 (071) I use two different timers to generate two PWM signals. The triggering of timers and PWM signals is out of phase by 180 degrees. Can I use one DMA buffer to load data into CCMR registers of two different timer...
Resolved! STM32H735V (LQFP100) PC2_C and PC3_C speed
Hello,I have a problem with pins PC2_C and PC3_C on STM32H7. We have custom board based on this MCU and we want to interface SD card via SPI. We are using these pins: PA9 as SCK, PA0 as CS, PC2_C and PC3_C as MISO and MOSI respectively. I can not ini...
How do I calculate how many clock cycles are needed to run block of code?
Is it possible to calculate how many clock ticks a function or select block of code will use up?
