About STomm.1

STomm.1 · 2020-11-03

Hello everyone.I think that the stm32f4xx_hal_i2c.c driver present in the STM32Cube_FW_F4_V1.25.1 and STM32Cube_FW_F4_V1.25.2 versions has a bug on I2C transfer in DMA mode.In the function:"I2C_MemoryTransmit_TXE_BTF" the value of "hi2c->MemaddSize" ...

STomm.1 · 2020-11-19

Hi Amel, it's quite simple: the problem occurs on the first call of the HAL_I2C_Mem_Write_DMA function, in mcp23017_init.main.c:/* USER CODE BEGIN Header */ /** ****************************************************************************** * @fil...

STomm.1 · 2020-11-13

Hi Amel.I haven't done a thorough analysis; I use DMA mode to program, read/write 3 IO_Expander. What I noticed is this:1) the first time the HAL_I2C_Mem_Write_DMA function is called (to program the IO_expander), the I2C_MemoryTransmit_TXE_BTF functi...

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Problem with I2C in DMA mode in the latest versions of the F4 STM32Cube FW

Re: Problem with I2C in DMA mode in the latest versions of the F4 STM32Cube FW

Re: Problem with I2C in DMA mode in the latest versions of the F4 STM32Cube FW