I'm using STM32F411RCT chip and using I2C3
slave is BMP280 * 2ea and HDC1080
The bmp280 is implemented as a function of HAL_I2C_Mem_Read.
HDC1080 is implemented as a function of HAL_I2C_Master_Transmit & HAL_I2C_Master_Receive
now, I change this function from polling to DMA for speed and to increase the utilization of the chip.
However,
I turned on the DMA function in CUBEMX and changed the function, but the data in the SLAVE that was working normally is not working.
I don’t' know the reason.
