STM32F4 I2C Driver must have an elevated interrupt priority

[tyler-gilbert]

When using HAL_I2C_Mem_Read_IT(), there is a race condition that happens if the interrupt priority of the I2C is not elevated.

The interrupt gets stuck in a loop handling I2C_MasterTransmit_BTF() because the state is set to RX so I2C_MasterReceive_BTF should be called rather than I2C_MasterTransmit_BTF().

[tyler-gilbert]

Use HAL_I2C_Master_Sequential_Transmit_IT() and HAL_I2C_Master_Sequential_Receive_IT() instead of HAL_I2C_Mem_Read_IT() to fix this.