I2C interrupt mode only works once?

jiangpen · ‎2016-06-21

Posted on June 21, 2016 at 14:53

I follow the example of the I2C_TwoBoards_ComIT

I have I2C host to send data to the STM32L4 board.

The I2C slave has below logic

HAL_I2C_Slave_Receive_IT(&I2cHandle, (uint8_t *)aRxBuffer, RXBUFFERSIZE);

In the HAL_I2C_SlaveRxCpltCallback, I set a flag to allow main loop to process the data.

But it only works once, and the second time, it cannot receive data and cannot trigger the interrupt.

May I know any other setting need to make I2C slave recieve multiple time?

thanks

#i2c-interrupts-stm32

Amel NASRI · ‎2016-06-27

Posted on June 27, 2016 at 14:31

Hi jiang.peng,

After receiving data the 1st time, are there any I2C flag errors set?

-Mayla-

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