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Forum Newbie
Group: Forum Members
Last Login: Tuesday, October 06, 2009 6:03 AM
Posts: 4,
Visits: 15
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hi
I am trying to construct software for an FPGA card and I will try to communicate with the serializer. Just to be sure I want to ask some questions.
1. As I understand the XBee module and the serial port(not the serial module) can not work simultaneously. Is it possible with serializer to communicate via GPIO ports(use GPIO ports as serial port)? I mean if I send data from FPGA to GPIO ports is it possible to store them in Serializer and send the data to PC with XBee Module in order to show this data on a Windows form in real time?
2. How many bits can be transferred to a PC in a second with XBee module?
thanks
__
fatih
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Supreme Being
Group: Administrators
Last Login: Monday, October 31, 2011 9:18 PM
Posts: 640,
Visits: 819
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The only way to communicate w/ the Serializer is via the serial modules, or via the TTL port pins (see documentation). You cannot communicate with it through GPIO. I think you should be able to get your FPGA to communicate over the TTL port, as you just need Tx, Rx, and Gnd connections.
This means that you'll have to implement serial port functionality in your FPGA image though...
Best Regards,
Jason Summerour
President,
Summerour Robotics Corporation
www.roboticsconnection.com
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Forum Newbie
Group: Forum Members
Last Login: Tuesday, October 06, 2009 6:03 AM
Posts: 4,
Visits: 15
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hi
thanks for the reply
Since TTL port pins and XBee module cannot be used simultaneously I am tryin to use GPIO pins. I am driving GPIO pins with FPGA in order to send my data in FPGA to PC. As you understand I am tring to use the the XBee module of serializer as a bridge between PC and FPGA.
I wrote my code for FPGA and also C# code for Serializer. I am using one of the GPIO pins(pin0) as controller. When pin0 is set I am transferring the state of all other 9 pins of Serializer to PC. In first stages, I am setting pin0 one time in a second.I am also driving these 9 pins with FPGA as you must understand.
The problem is that when I increase the set frequency of pin0 I could not observe all data correctly in PC. I mean some bits are not transferred to PC with XBee module.
I also paste my code below whose motor drive part is irrelevant
Thanks
using RoboticsConnection.Serializer;
using RoboticsConnection.Serializer.Ids;
using RoboticsConnection.Serializer.Sensors;
using RoboticsConnection.Serializer.Components;
using RoboticsConnection.Serializer.Controllers;
using System;
using System.Threading;
namespace test
{
class Program
{
static Serializer serializer;
static PwmDCMotorController LeftMotor;
static PwmDCMotorController RightMotor;
static GpioPin pin0;
static GpioPin pin1;
static GpioPin pin2;
static GpioPin pin3;
static GpioPin pin4;
static GpioPin pin5;
static GpioPin pin6;
static GpioPin pin7;
static GpioPin pin8;
static GpioPin pin9;
static void Main(string[] args)
{
serializer = new Serializer();
serializer.PortName = "COM3";
serializer.BaudRate = 19200;
pin0 = new GpioPin(serializer);
pin0.Pin = GpioPinId.Pin0;
pin1 = new GpioPin(serializer);
pin1.Pin = GpioPinId.Pin1;
pin2 = new GpioPin(serializer);
pin2.Pin = GpioPinId.Pin2;
pin3 = new GpioPin(serializer);
pin3.Pin = GpioPinId.Pin3;
pin4 = new GpioPin(serializer);
pin4.Pin = GpioPinId.Pin4;
pin5 = new GpioPin(serializer);
pin5.Pin = GpioPinId.Pin5;
pin6 = new GpioPin(serializer);
pin6.Pin = GpioPinId.Pin6;
pin7 = new GpioPin(serializer);
pin7.Pin = GpioPinId.Pin7;
pin8 = new GpioPin(serializer);
pin8.Pin = GpioPinId.Pin8;
pin9 = new GpioPin(serializer);
pin9.Pin = GpioPinId.Pin9;
pin0.Set += new SerializerComponentEventHandler(pin0_Set);
LeftMotor = new PwmDCMotorController(serializer);
RightMotor = new PwmDCMotorController(serializer);
LeftMotor.DCMotorId = DCMotorId.DCMotor2;
RightMotor.DCMotorId = DCMotorId.DCMotor1;
serializer.StartCommunication();
ConsoleKeyInfo cki;
while (true)
{
serializer.PumpEvents();
if (Console.KeyAvailable == true)
{
Console.Beep();
cki = Console.ReadKey(true);
switch (cki.Key)
{
case ConsoleKey.DownArrow:
LeftMotor.Speed = -50;
RightMotor.Speed = -50;
Console.WriteLine(LeftMotor.Speed.ToString() + " geri");
break;
case ConsoleKey.UpArrow:
LeftMotor.Speed = 50;
RightMotor.Speed = 50;
Console.WriteLine("ileri");
break;
case ConsoleKey.LeftArrow:
LeftMotor.Speed = -50;
RightMotor.Speed = 50;
Console.WriteLine("sol");
break;
case ConsoleKey.RightArrow:
LeftMotor.Speed = 50;
RightMotor.Speed = -50;
Console.WriteLine("sag");
break;
case ConsoleKey.S:
LeftMotor.Speed = 0;
RightMotor.Speed = 0;
Console.WriteLine("dur");
break;
}
}
}
}
static void pin0_Set(SerializerComponent sender)
{
Console.WriteLine(pin0.Pin.ToString() + " " + pin0.State.ToString());
Console.WriteLine(pin1.Pin.ToString() + " " + pin1.State.ToString());
Console.WriteLine(pin2.Pin.ToString() + " " + pin2.State.ToString());
Console.WriteLine(pin3.Pin.ToString() + " " + pin3.State.ToString());
Console.WriteLine(pin4.Pin.ToString() + " " + pin4.State.ToString());
Console.WriteLine(pin5.Pin.ToString() + " " + pin5.State.ToString());
Console.WriteLine(pin6.Pin.ToString() + " " + pin6.State.ToString());
Console.WriteLine(pin7.Pin.ToString() + " " + pin7.State.ToString());
Console.WriteLine(pin8.Pin.ToString() + " " + pin8.State.ToString());
Console.WriteLine(pin9.Pin.ToString() + " " + pin9.State.ToString() + "");
}
}
}
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