Communicating with Wiznet5100

Archive
21

@ Dave McLaughlin - I’ve tried it at 5Khz, no go.

22

I wonder what speed your bit banging is now running it?

It still sounds like a timing issue, especially is bit banging works.

23 

using Microsoft.SPOT;
using Microsoft.SPOT.Hardware;
using System;
using System.Threading;
using Toolbox.NETMF;

public static class Wiznet5100 {
    /// <summary>
    /// MAC Address 59-1A-4F-3A-84-A2
    /// </summary>
    static OutputPort reset = new OutputPort((Cpu.Pin)FEZCerbuino.Pin.Digital.D9, true);

    static OutputPort chipSelect = new OutputPort((Cpu.Pin)FEZCerbuino.Pin.Digital.D10, true);
    static OutputPort clock = new OutputPort((Cpu.Pin)FEZCerbuino.Pin.Digital.D13, false);
    static OutputPort mosi = new OutputPort((Cpu.Pin)FEZCerbuino.Pin.Digital.D11, false);
    static InputPort miso = new InputPort((Cpu.Pin)FEZCerbuino.Pin.Digital.D12, false, Port.ResistorMode.Disabled);

    static InterruptPort interrupt = new InterruptPort((Cpu.Pin)FEZCerbuino.Pin.Digital.D8, false, Port.ResistorMode.Disabled, Port.InterruptMode.InterruptEdgeLevelLow);

    //static SPI.Configuration config = new SPI.Configuration((Cpu.Pin)FEZCerbuino.Pin.Digital.D7,
    //    false, // Chip Select, active-low
    //    0, // 1 millisecond setup time
    //    0, // 1 millisecond hold time
    //    true, // Clock low on idle
    //    false, // Data valid on falling edge 
    //    5000, // 5Mhz Clock Rate
    //    SPI.SPI_module.SPI1);
    //static SPI port = new SPI(config);

    public static void Test() {
        reset.Write(false);
        Thread.Sleep(20);
        reset.Write(true);
        //Subnet Mask
        BitBang(0xF00005FF); //255
        BitBang(0xF00006FF); //255
        BitBang(0xF00007FF); //255
        BitBang(0xF0000800); //0
        //MAC Address
        BitBang(0xF0000959); //59
        BitBang(0xF0000A1A); //1A
        BitBang(0xF0000B4F); //4F
        BitBang(0xF0000C3A); //3A
        BitBang(0xF0000D84); //84
        BitBang(0xF0000EA2); //A2
        //Source IP
        BitBang(0xF0000FC0); //192
        BitBang(0xF00010A8 ); //168
        BitBang(0xF0001102); //2
        BitBang(0xF0001202); //2

        //validate
        Debug.Print("MAC Address: " + Tools.Dec2Hex(BitBang(0x0F000900)) + "-" + Tools.Dec2Hex(BitBang(0x0F000A00)) + "-" + Tools.Dec2Hex(BitBang(0x0F000B00))
            + "-" + Tools.Dec2Hex(BitBang(0x0F000C00)) + "-" + Tools.Dec2Hex(BitBang(0x0F000D00)) + "-" + Tools.Dec2Hex(BitBang(0x0F000E00)));
        Debug.Print("Source IP  : " + BitBang(0x0F000F00).ToString() + "." + BitBang(0x0F001000).ToString() + "." + BitBang(0x0F001100).ToString() + "." + BitBang(0x0F001200).ToString());
        Debug.Print("Mask       : " + BitBang(0x0F000500).ToString() + "." + BitBang(0x0F000600).ToString() + "." + BitBang(0x0F000700).ToString() + "." + BitBang(0x0F000800).ToString());
    }

    static byte BitBang(uint command) {
        uint _value = 0;
        chipSelect.Write(false);
        for (int i = 0; i < 32; i++) {
            mosi.Write(((command << i) & 0x80000000) == 0x80000000);
            clock.Write(true);
            _value = _value << 1 | (uint)(miso.Read() ? 1 : 0);
            clock.Write(false);
        }
        chipSelect.Write(true);
        return (byte)(_value & 0xFF);
    }
}

It’s kinda weird that bit banging works where the native stuff doesn’t
EDIT: I keep forgetting to put the debug output
MAC Address: 59-1A-4F-3A-84-A2
Source IP : 192.168.2.2
Mask : 255.255.255.0

Also GHI I found a bug in your forums. If it’s within code tags, I don’t think you should be parsing for smilies.


BitBang(0xF00010A8 ); //168
24

I think you need to use Mode0 SPI (low on idle, valid on rising edge) or Mode 3 (high on idle, valid on rising edge). So SPI args 5 and 6 should be false,true or true,true.

This worked for me:

var spiConfig = new SPI.Configuration(
                csPin,      // pin to use as chip select
                false,      // CS active state 
                0,          // CS setup time
                0,          // CS hold time
                false,      // clock is idle shen SCLK is in this state
                true,       // true=sample on rising edge; false=falling edge
                5000,       // Clock rate, in kHz
                spiModule); // SPI module id
25

@ mcalsyn - That works!

using Microsoft.SPOT;
using Microsoft.SPOT.Hardware;
using System;
using System.Threading;
using Toolbox.NETMF;

public static class Wiznet5100 {
    /// <summary>
    /// MAC Address 59-1A-4F-3A-84-A2
    /// </summary>
    static OutputPort reset = new OutputPort((Cpu.Pin)FEZCerbuino.Pin.Digital.D9, true);
    static InterruptPort interrupt = new InterruptPort((Cpu.Pin)FEZCerbuino.Pin.Digital.D8, false, Port.ResistorMode.Disabled, Port.InterruptMode.InterruptEdgeLevelLow);
    static SPI.Configuration config = new SPI.Configuration((Cpu.Pin)FEZCerbuino.Pin.Digital.D10,
        false,      // CS active state 
        0,          // CS setup time
        0,          // CS hold time
        false,      // clock is idle shen SCLK is in this state
        true,       // true=sample on rising edge; false=falling edge
        5000,       // Clock rate, in kHz
        SPI.SPI_module.SPI1); // SPI module id
    static SPI port = new SPI(config);

    public static void Test() {
        reset.Write(false);
        Thread.Sleep(20);
        reset.Write(true);
        byte[] _read = new byte[4];
        while (true) {
            port.WriteRead(new byte[] { 0x0F, 0x00, 0x17, 0x00 }, _read);
            Debug.Print("0x0017 : " + _read[3].ToString());
            port.WriteRead(new byte[] { 0x0F, 0x00, 0x18, 0x00 }, _read);
            Debug.Print("0x0018 : " + _read[3].ToString());
        }
    }
}

So therefore, it was the clock idle setting all along. What a way to spend 3 days.

EDIT: And now on to our next issue: Why is it not responding to pings :slight_smile: