XCore Exchange

Hi all,

I have made a board with the XUF216-512 processor. It is booting fine and I can run programs on it using JTag as target I/O option. But when I try to run code with xScope target I/O option, it seems like the program gets stuck right at the very beginning. I am interfacing the board with the XTag 3 and a xSys header with link 0 (X0D40...X0D43) connected to pins 118,14,10,6 of the header. I haven't used 33 Ohm resistors at the transmitter. I have attached my target file. Any ideas where the problem is?

Thank you :-)

<?xml version="1.0" encoding="UTF-8"?>
<Network xmlns="http://www.xmos.com"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://www.xmos.com http://www.xmos.com"
         >
  <Type>Device</Type>
  <Name>XUF216-512-TQ128-C20 Device</Name>

  <Declarations>
    <Declaration>tileref tile[2]</Declaration>
    <Declaration>tileref usb_tile</Declaration>
  </Declarations>

  <Packages>
    <Package id="0" Type="XS2-UFnA-512-TQ128">
      <Nodes>
        <Node Id="0" InPackageId="0" Type="XS2-L16A-512" SystemFrequency="500MHz" Oscillator="24MHz" RoutingId="0x8000">
          <Boot>
            <Source Location="bootFlash"/>
          </Boot>
          <Tile Number="0" Reference="tile[0]">
            <Port Location="XS1_PORT_1B" Name="PORT_SQI_CS"/>
            <Port Location="XS1_PORT_1C" Name="PORT_SQI_SCLK"/>
            <Port Location="XS1_PORT_4B" Name="PORT_SQI_SIO"/>
          </Tile>
          <RoutingTable>
            <Bits>
              <Bit number="0" direction="0"/>
              <Bit number="15" direction="0"/>
            </Bits>
            <Links>
              <Link name="XL0" direction="0"/>
            </Links>
          </RoutingTable>
          <Tile Number="1" Reference="tile[1]"/>
        </Node>
      </Nodes>
<Links>
      </Links>
    </Package>
  </Packages>

  <ExternalDevices>
    <Device NodeId="0" Tile="0" Class="SQIFlash" Name="bootFlash">
      <Attribute Name="PORT_SQI_CS" Value="PORT_SQI_CS"/>
      <Attribute Name="PORT_SQI_SCLK" Value="PORT_SQI_SCLK"/>
      <Attribute Name="PORT_SQI_SIO" Value="PORT_SQI_SIO"/>
    </Device>
  </ExternalDevices>
<Nodes>
    <Node Id="1" Type="device:" routingId="0x8001" Reference="xscope_tile">
      <Service Id="0" Proto="xscope_host_data(chanend c);">
        <Chanend Identifier="c" end="3"/>
      </Service>
    </Node>
  </Nodes>
  <Links>
    <Link Encoding="2wire" Delays="4,4" Flags="XSCOPE">
      <LinkEndpoint NodeId="0" Link="XL0"/>
      <LinkEndpoint NodeId="1" Chanend="1"/>
    </Link>
  </Links>
  <JTAGChain>
    <JTAGDevice NodeId="0"/>
  </JTAGChain>

</Network>

For some reason the program runs if i change the routingId of the xscope node from 0x8001 to 0x8000 and the package routingId to any 0xhhh0. If anyone has an idea why this might be, I would be very interested.

Perhaps the attached document will help.

Hi mon2,

Thank you, but I already know that document. I still can't see the cause for this behavior. Maybe it has something to do with some faulty routing that was not detected by the compiler.

Could be a toolchain quirk...







reference:
https://www.xmos.com/support/tools/docu ... nent=14796