Posted on December 11, 2017 at 10:51Hello!
i am working with the STM32F437IIT6, i have an issue regarding the I2C.
While working with some device on the I2C bus i can expirience a situation in which the busy bit in the SR2 register is always high.
when i try to deal with it by re initializing the I2C channel the busy bit stays on and comms on this channel are not working. i also tried reinitializing the GPIOs and the RCC (you can see my re init function):
*********************************
HAL_I2C_DeInit(&hi2c1);
HAL_I2C_DeInit(&hi2c2);
HAL_RCC_DeInit();
SystemClock_Config();
HAL_Init();
MX_GPIO_Init();
MX_I2C1_Init();
MX_I2C2_Init();
HAL_Delay(150);
*********************************
on the other hand, if i restart the MCU the bit returns to low state and the comms work fine once again.
could you please advise on how do i efectivley restart the I2C channel? what am i doing wrong?
