FTDI libMPSSE.dll I2C_DeviceRead（）始终返回0xFF

Question

我导入FTDI芯片libMPSSE.dll，并在I2C模式下使用它。我的测试设备是传感器BMP280。我尝试读取它的ID寄存器，其中包含0x58值。问题是方法 I2C_DeviceRead（）始终返回0xFF，尽管我在逻辑分析仪中看到传感器正确回答：

这些方法的原始声明为：

FT_STATUS I2C_DeviceRead(FT_HANDLE handle, uint32 deviceAddress, uint32 sizeToTransfer, uint8 *buffer, uint32 *sizeTransferred, uint32 options)
FT_STATUS I2C_DeviceWrite(FT_HANDLE handle, uint32 deviceAddress, uint32 sizeToTransfer, uint8 *buffer, uint32 *sizeTransferred, uint32 options)

我这样导入此方法：

<DllImport(DLL_MPSSE_PATH, SetLastError:=True, CallingConvention:=CallingConvention.Cdecl)>
Private Shared Function I2C_DeviceRead(ByVal handle As Integer, ByVal deviceAddress As Integer, ByVal sizeToTransfer As Integer, ByVal buffer As Byte(), ByRef sizeTransfered As Integer, ByVal options As I2C_TRANSFER_OPTIONS) As Integer
End Function

<DllImport(DLL_MPSSE_PATH, SetLastError:=True, CallingConvention:=CallingConvention.Cdecl)>
Private Shared Function I2C_DeviceWrite(ByVal handle As Integer, ByVal deviceAddress As Integer, ByVal sizeToTransfer As Integer, ByVal buffer As Byte(), ByRef sizeTransfered As Integer, ByVal options As I2C_TRANSFER_OPTIONS) As Integer
End Function

I2C_TRANSFER_OPTIONS是带有控制位掩码的枚举。 并根据传感器数据表进一步称呼它（伪代码）。首先，写寄存器地址：

Dim sensorAddr as Integer = &H77
Dim idRegister as Byte() = {&HD0}
Dim options as Integer = &H13 'I2C_TRANSFER_OPTIONS_START_BIT | I2C_TRANSFER_OPTIONS_STOP_BIT | I2C_TRANSFER_OPTIONS_FAST_TRANSFER_BYTES
Dim transferred as Integer = 0
I2C_DeviceWrite(myhandle, sensorAddr, 1, idRegister, transferred, options)

然后读取传感器寄存器的内容：

Dim readLen as Integer = 1
Dim readBuf(readLen-1) as Byte
I2C_DeviceRead(myhandle, sensorAddr, readLen, readBuf, transferred, options)

如果是readLen，例如4，因此readBuf（）包含四个0xFF，尽管传感器将其他值写入数据线（图片中的SDA）：

我的代码有什么问题？为什么我可以正确书写，但阅读错误？谢谢！