I2C_IF_STATUS
i2c_status = hw_read_20kx(hw, I2C_IF_STATUS);
hw_write_20kx(hw, I2C_IF_STATUS, i2c_status);
i2c_status = hw_read_20kx(hw, I2C_IF_STATUS);
hw_write_20kx(hw, I2C_IF_STATUS, i2c_status);
ret = hw_read_20kx(hw, I2C_IF_STATUS);
i2c_status = hw_read_20kx(hw, I2C_IF_STATUS);
hw_write_20kx(hw, I2C_IF_STATUS, i2c_status);
i2c_status = hw_read_20kx(hw, I2C_IF_STATUS);
hw_write_20kx(hw, I2C_IF_STATUS, i2c_status);