如标题所述，Adafruit FT232H Breakout 能否用作传感器和 Android 智能手机等外围设备之间的 GPIO 接口？
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是的。它需要您的 libs/ 目录中来自 FTDI 的 d2xx.jar。然后您可以使用 FTDI 提供的示例连接到设备。
这是我必须从 Adafruit 附加到 FT232H 的 MainActivity.java：
package com.XXXXX.ftdi;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.hardware.usb.UsbManager;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.TextView;
import android.widget.Toast;
import com.ftdi.j2xx.D2xxManager;
import com.ftdi.j2xx.FT_Device;
public class MainActivity extends AppCompatActivity {
public static D2xxManager ftD2xx = null;
FT_Device ftDevice = null;
static Context DeviceInformationContext;
int devCount=0;
TextView textNumberDeviceValue;
TextView textDeviceName;
TextView textDeviceSerialNo;
TextView textDeviceDescription;
TextView textDeviceID;
TextView textDeviceLocation;
TextView textLibrary;
@Override
protected void onCreate(Bundle savedInstanceState) {
try {
ftD2xx = D2xxManager.getInstance(this);
} catch (D2xxManager.D2xxException ex) {
ex.printStackTrace();
}
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
SetupD2xxLibrary();
IntentFilter filter = new IntentFilter();
filter.addAction(UsbManager.ACTION_USB_DEVICE_ATTACHED);
filter.addAction(UsbManager.ACTION_USB_DEVICE_DETACHED);
filter.setPriority(500);
textNumberDeviceValue = findViewById(R.id.numDev);
textDeviceName = findViewById(R.id.devName);
textDeviceSerialNo = findViewById(R.id.device_information_serialno);
textDeviceDescription = findViewById(R.id.device_information_description);
textDeviceID = findViewById(R.id.device_information_deviceid);
textDeviceLocation = findViewById(R.id.device_information_devicelocation);
textLibrary = findViewById(R.id.device_information_library);
devCount = -1;
ConnectFunction();
try {
GetDeviceInformation();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
String s = e.getMessage();
e.printStackTrace();
}
this.registerReceiver(mUsbReceiver, filter);
}
private void SetupD2xxLibrary () {
/*
PackageManager pm = getPackageManager();
for (ApplicationInfo app : pm.getInstalledApplications(0)) {
Log.d("PackageList", "package: " + app.packageName + ", sourceDir: " + app.nativeLibraryDir);
if (app.packageName.equals(R.string.app_name)) {
System.load(app.nativeLibraryDir + "/libj2xx-utils.so");
Log.i("ftd2xx-java","Get PATH of FTDI JIN Library");
break;
}
}
*/
// Specify a non-default VID and PID combination to match if required
//if(!ftD2xx.setVIDPID(0x0403, 0xada1))
if(!ftD2xx.setVIDPID(0x0403, 0x6014))
Log.i("ftd2xx-java","setVIDPID Error");
}
/***********USB broadcast receiver*******************************************/
private final BroadcastReceiver mUsbReceiver = new BroadcastReceiver()
{
@Override
public void onReceive(Context context, Intent intent)
{
String TAG = "FragL";
String action = intent.getAction();
if(UsbManager.ACTION_USB_DEVICE_DETACHED.equals(action))
{
Log.i(TAG,"DETACHED...");
}
}
};
public void GetDeviceInformation() throws InterruptedException {
//int devCount = 0;
// devCount = ftD2xx.createDeviceInfoList(DeviceInformationContext);
Log.i("FtdiModeControl",
"Device number = " + Integer.toString(devCount));
if (devCount > 0) {
D2xxManager.FtDeviceInfoListNode[] deviceList = new D2xxManager.FtDeviceInfoListNode[devCount];
ftD2xx.getDeviceInfoList(devCount, deviceList);
deviceList[0] = ftD2xx.getDeviceInfoListDetail(0);
textNumberDeviceValue.setText("Number of Devices: "
+ Integer.toString(devCount));
if (deviceList[0].serialNumber == null) {
textDeviceSerialNo.setText("Device Serial Number: " + deviceList[0].serialNumber + "(No Serial Number)");
} else {
textDeviceSerialNo.setText("Device Serial Number: " + deviceList[0].serialNumber);
}
if (deviceList[0].description == null) {
textDeviceDescription.setText("Device Description: " + deviceList[0].description+ "(No Description)");
} else {
textDeviceDescription.setText("Device Description: " + deviceList[0].description);
}
textDeviceLocation.setText("Device Location: " + String.format("%04x",deviceList[0].location));
textDeviceID.setText("Device ID: " + String.format("%08x",deviceList[0].id));
int libVersion = D2xxManager.getLibraryVersion();
textLibrary.setText("Library Version: " + convertIntToBcdString(libVersion) );
// display the chip type for the first device
switch (deviceList[0].type) {
case D2xxManager.FT_DEVICE_232B:
textDeviceName.setText("Device Name : FT232B device");
break;
case D2xxManager.FT_DEVICE_8U232AM:
textDeviceName.setText("Device Name : FT8U232AM device");
break;
case D2xxManager.FT_DEVICE_UNKNOWN:
textDeviceName.setText("Device Name : Unknown device");
break;
case D2xxManager.FT_DEVICE_2232:
textDeviceName.setText("Device Name : FT2232 device");
break;
case D2xxManager.FT_DEVICE_232R:
textDeviceName.setText("Device Name : FT232R device");
break;
case D2xxManager.FT_DEVICE_2232H:
textDeviceName.setText("Device Name : FT2232H device");
break;
case D2xxManager.FT_DEVICE_4232H:
textDeviceName.setText("Device Name : FT4232H device");
break;
case D2xxManager.FT_DEVICE_232H:
textDeviceName.setText("Device Name : FT232H device");
break;
case D2xxManager.FT_DEVICE_X_SERIES:
textDeviceName.setText("Device Name : FTDI X_SERIES");
break;
case D2xxManager.FT_DEVICE_4222_0:
case D2xxManager.FT_DEVICE_4222_1_2:
case D2xxManager.FT_DEVICE_4222_3:
textDeviceName.setText("Device Name : FT4222 device");
break;
default:
textDeviceName.setText("Device Name : FT232B device");
break;
}
} else {
textNumberDeviceValue.setText("Number of devices: 0");
textDeviceName.setText("Device Name : No device");
textDeviceSerialNo.setText("Device Serial Number: NULL");
textDeviceDescription.setText("Device Description: None");
textDeviceLocation.setText("Device Location: Nowhere");
textDeviceID.setText("Device ID: None");
textLibrary.setText("Library Version: None");
}
}
String convertIntToBcdString(int num)
{
String str = "";
str = Integer.toString((num>>28) & 0xf) + "." +
Integer.toString((num>>24) & 0xf) +
Integer.toString((num>>20) & 0xf) + "." +
Integer.toString((num>>16) & 0xf) +
Integer.toString((num>>12) & 0xf) + "." +
Integer.toString((num>>8) & 0xf) +
Integer.toString((num>>4) & 0xf) +
Integer.toString(num & 0xf);
return str;
}
public void ConnectFunction() {
int openIndex = 0;
if (devCount > 0)
return;
devCount = ftD2xx.createDeviceInfoList(this);
if (devCount > 0) {
ftDevice = ftD2xx.openByIndex(this, openIndex);
if(ftDevice == null)
{
Toast.makeText(this,"ftDev == null",Toast.LENGTH_LONG).show();
return;
}
if (true == ftDevice.isOpen())
{
ftDevice.setBitMode((byte) 0, D2xxManager.FT_BITMODE_RESET);
ftDevice.setBaudRate(9600);
ftDevice.setDataCharacteristics(D2xxManager.FT_DATA_BITS_8,
D2xxManager.FT_STOP_BITS_1, D2xxManager.FT_PARITY_NONE);
ftDevice.setFlowControl(D2xxManager.FT_FLOW_NONE, (byte) 0x00, (byte) 0x00);
ftDevice.setLatencyTimer((byte) 16);
ftDevice.purge((byte) (D2xxManager.FT_PURGE_TX | D2xxManager.FT_PURGE_RX));
}
else
{
Toast.makeText(this, "Need to get permission!",Toast.LENGTH_SHORT).show();
}
}
else
{
Log.e("j2xx", "DevCount <= 0");
}
}
}
于 2018-11-09T13:30:59.827 回答