I2C_INT_NOACK
#define I2C_ERROR_MASK (I2C_INT_ARB_LOST | I2C_INT_NOACK | \
if (status & I2C_INT_NOACK)
mask = I2C_INT_NOACK | I2C_INT_ARB_LOST | I2C_INT_PACKET_XFER_COMPLETE;