Question

我想使用USB（UsbLibrary.dll）将数据C＃发送到PIC。我使用以下代码发送数据;

private void button1_Click(object sender, EventArgs e)
        {
            byte[] my_buffer = new byte[64];
            my_buffer[1] = (byte)0x01;
            usbHidPort1.SpecifiedDevice.SendData(my_buffer);
        }

但是我得到错误，因为usbHidPort1.SpecifiedDevice值为null（这意味着连接的PIC设备未被C＃识别），尽管供应商和产品ID在C＃和CCS C（PIC）中编码相同。如何使用UsbLibrary将数据C＃发送到PIC？

Answer 1

这是我用来向PIC发送数据的函数

private UsbDevice usb = new UsbDevice();


    if (usb != null && usb.myDevice != null)
                    {
                        byte[] data = new byte[usb.myDevice .nOutputReportLength];

                        data[0] = 0;    // The first byte is the "Report ID" and does not get sent over the USB bus.  Always set = 0.
                        data[1] = b;
                        if (d != null)
                            Array.Copy(d, 0, data, 2, d.Length);

                        this.usb.myDevice .SendData(data);
                    }
                    else
                        MessageBox.Show("Device not found");

使用USB将数据C＃发送到PIC

1 个答案: