FAQs
cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 

STM32H7's I2C4+BDMA method cannot read sensor data

one V
Associate III

‎2019-02-26 4:26 AM

Reading sensor data using the STM32H7's I2c4+BDMA method was unsuccessful. It is okay to simply use I2C4 or other i2c+DMA methods. The read function when using BDMA is HAL_I2C_Mem_Read_DMA, and when BDMA is not used, it is HAL_I2C_Mem_Read.

Labels:
0 Kudos
This discussion is locked. Please start a new topic to ask your question.
10 REPLIES 10
waclawek.jan
Guru

‎2019-11-14 1:01 AM

Read out and check the relevant I2C, DMAMUX and DMA registers.

You may want to start with the DMAMUX, and the I2C_CR1.RXDMAEN bit.

CubeMX-generated code? Maybe one of those "swapping calls solved the problem" eg. cases https://community.st.com/s/question/0D50X0000BcPXk2SQG/32f746-usart-dma-with-stemwin-not-working ?

JW

0 Kudos
Top