Hi, I need to use the MCP79410 rtc (or alikes: DS1307, PCF8583, etc) but the STM32CubeIDE I2C seems that can't handle the read/write protocol for these devices. For example, as the below image shows, one needs to send the control byte (writing) follo...
Hello, I am using an STM32F103CBT as an I2C slave. A memory buffer is to be transferred via the interface. Although hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE; is set, I cannot measure clock stretching and the first byte transferred is always 0...
Have an issue with connection I2C sensor to STM32G030 chip. Function HAL_I2C_IsDeviceReady alvais return HAL_ERROR. Looks like this controller are not support I2C master, but documentation said: Features of the I2C peripheral: I2C-bus specification...
Hi everybody !! i have an issue on I2C with a STM32 issue. i thought this was a code issue but in the main i also make LEDs blinking and it works, only the I2C doesn't work but... i noticed that my lines both rise to 3.3V but never fall down it just ...
Hello,I am trying to implement the following: a timer (tim3) is set to PWM generation, outputting a pulse periodically. Its TRGO triggers the DMA channel to request I2C to initiate a read transaction, read 8 bytes and generate an event interrupt (TC ...
UM2033 mentions that Wi-fi connector of stm32f769i-discovery development board can be configured for i2c board using signals EXT_SCL and EXT_SDA that are connected to PG3 and PG6, however datasheet of MCU (DS11532) these pins do not support I2C.Is th...
Hi all, I've been battling an I2C issue for a couple of weeks, been through so many forum posts, and have tried a number of things, now I'm looking for some help to figure out what I'm missing. Problem Description:Master I2C device triggers slave tra...
I'm working on a design that involves using an STM32F04 acting as a USB-CDC to RS232 bridge to communicate with the main logic of the system, in preference to dedicated RS232 USB chips that require dedicated drivers. In addition to this, the STM32 is...
Hi everyone, I am trying to use LPTIM1 and I2C3 to read the values of a sensor's register every 1 second and save them into a data buffer while in Stop2 mode. What I would like to know is if it is possible to store data sampled at a given frequency ...
I am using the I2C code in STM32Cube_FW_F4_V1.26.0\Projects\STM32F411E-Discovery\Examples\I2C\I2C_TwoBoards_ComPolling as base to write my own I2C firmware.I would say the HAL library in stm32f4xx_hal_i2c.c is quite useful and covers all I2C communic...