Which function used for read I2C device address?
Hello,I am working on NUCLEO-H745ZIQ board. I am interfacing PCAL6524 to board .I have to read the Device address of that IC. Which HAL function that I have to used? I am get confused.
Forum Posts
Resolved! Problem rewriting Macronix flash
Using STM32H7B3I Discovery for program development.Using stm32h7b3i_discovery_ospi.c thus BSP_OSPI_NOR_*** functions.Which uses mx25lm51245g.c thus MX25LM51245G_*** functions.Which uses stm32h7xx_hal_ospi.c thus HAL_OSPI_*** functions.Can erase relia...
No EEPROM, what to do?
Hi All, I'm using a STM32F030x4 that has no EEPROM but I don't want to implement EEPROM emulation on the Main Flash as I only need to 'save' a couple of bytes during power off.Is it possible to use the 'User data option byte' @ 0x1FFF_F804 as a non-v...
SPI Master-Slave Communication
Hello,I want to communicate with SPI between STM32F7 and Texas DSP devices. STM32F7 is the master device and Texas DSP is the slave device. I am sending data from STM32F7 master device to Texas DSP slave device. But I can not send data from slave dev...
Subtle Q on 32F4 dual DAC (32 bit data feed) mode
I am finding that with DAC1 triggered from TIM5, DAC2 can be set either for the same trigger (the doc implies that) or for no trigger ("software" trigger). Both work.I would have expected software trigger / no trigger to work on DAC2 because the 32-b...
NUCLEO-H745ZI-Q doesn't runs my program
Hello,I've ordered two NUCLEO-H745ZI-Q at a same distributor, on a same time.It seems that one CPU's board is "bricked" : The software runs fine on a board. the same software literally doesn't run on the second board.The embedded debugger tells that ...
SPI DMA STM32H742VI with LL with Polling
Hello,I have tried to implement a simple SPI driver. Only with LL Lib. I would like to use DMA and I will do it without interrupts.So it works now. But for me it is not clear how to poll if the transfer is finish in the right way.So I use rx and tx d...
STM32H7 , Very slow processing time ?
Hello, i am using stm32h723zg nucleo board in my project. my system clock frequency 480 MHZ, that means it does an instruction for about 2,08 ns as well but the time i measure9-10 ns , That's too much.(application ; Writing adc value to another v...
Find out a wakeup source on STM32H7
Im trying to put STM32H743 in stop mode with wakeup from external interrupt. So far core wakes up immediately afterHAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFE);EXTI_CPUPRx registers all set to 0, so what wakes up the CPU? Is the...
