Posted on October 09, 2015 at 13:23
I have I2C slave working to a point but have an event code which causes the isr to trigger continuously. Simplified code below.
Now I am using a ''Total Phase Aardvark'' to ask for 8 bytes of data and on the scope i see all the data and is correct, including the NAK on the last byte.
My problem is at this point i get ISR calls with the event code 0x604
What is this and how do i clear it?
joolz
static void I2C_EV_IRQHandler(I2C_Driver_Def *driver)
{
uint32_t event = I2C_GetLastEvent(driver->I2C);
switch (event) {
case I2C_EVENT_SLAVE_RECEIVER_ADDRESS_MATCHED:
break;
case I2C_EVENT_SLAVE_BYTE_RECEIVED:
I2C_ReceiveData(driver->I2C);
break;
case I2C_EVENT_SLAVE_TRANSMITTER_ADDRESS_MATCHED: // prepare for transfer response
break;
case I2C_EVENT_SLAVE_BYTE_TRANSMITTED:
I2C_SendData(driver->I2C, 0xff);
break;
case I2C_EVENT_SLAVE_BYTE_TRANSMITTING:
break;
case I2C_EVENT_SLAVE_STOP_DETECTED:
I2C_ClearFlag(driver->I2C, I2C_FLAG_STOPF);
break;
case I2C_EVENT_SLAVE_ACK_FAILURE:
break;
default: // Error flag?
break;
}
}
