Mercurial Mercurial > beremiz / file revision
summary | shortlog | changelog | graph | tags | bookmarks | branches | files | changeset | file | latest | revisions | annotate | diff | comparison | raw | help
tests/canopen_slave/canopen@canfestival/slave@CanOpenSlave/slave.od
author Andrey Skvortsov <andrej.skvortzov@gmail.com>
Sun, 06 Jan 2019 01:22:46 +0300
changeset 2499 68f4f2d4516b
parent 411 8261c8f1e365
permissions -rw-r--r--
use pregenerated CRC32 lookup tables for retain on Win32 and GNU/Linux

This code could be possible reused on low-end targets with limited RAM.

code to generate lookup table:
[---------------------------------------------------------------------]

/* CRC lookup table and initial state. */
uint32_t crc32_table[256];

/* Generate CRC32 lookup table. */
void GenerateCRC32Table(void)
{
unsigned int i, j;
/* Use CRC-32-IEEE 802.3 polynomial 0x04C11DB7 (bit reflected). */
uint32_t poly = 0xEDB88320;

for (i = 0; i <= 0xFF; i++)
{
uint32_t c = i;
for (j = 0 ; j < 8 ; j++)
c = (c & 1) ? (c >> 1 ) ^ poly : (c >> 1);
crc32_table[i] = c;
}
}

void main(void)
{
GenerateCRC32Table();
int j=0;
for(int i=0; i<256; i++) {
printf("0x%08X, ", crc32_table[i]);
if (++j >= 8) {
j = 0;
printf("\n");
}
}
}
[---------------------------------------------------------------------] 
<?xml version="1.0"?>
<!DOCTYPE PyObject SYSTEM "PyObjects.dtd">
<PyObject module="node" class="Node" id="157806348">
<attr name="Profile" type="dict" id="157588716" >
</attr>
<attr name="Description" type="string" value="" />
<attr name="Dictionary" type="dict" id="157588580" >
  <entry>
    <key type="numeric" value="4096" />
    <val type="numeric" value="0" />
  </entry>
  <entry>
    <key type="numeric" value="4097" />
    <val type="numeric" value="0" />
  </entry>
  <entry>
    <key type="numeric" value="5122" />
    <val type="list" id="160478380" >
      <item type="string" value="{True:&quot;$NODEID+0x%X00&quot;%(base+2),False:0x80000000}[base&lt;4]" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
    </val>
  </entry>
  <entry>
    <key type="numeric" value="5123" />
    <val type="list" id="158303244" >
      <item type="string" value="{True:&quot;$NODEID+0x%X00&quot;%(base+2),False:0x80000000}[base&lt;4]" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
    </val>
  </entry>
  <entry>
    <key type="numeric" value="8192" />
    <val type="numeric" value="0" />
  </entry>
  <entry>
    <key type="numeric" value="8193" />
    <val type="numeric" value="0" />
  </entry>
  <entry>
    <key type="numeric" value="5634" />
    <val type="list" id="158305356" >
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
    </val>
  </entry>
  <entry>
    <key type="numeric" value="5635" />
    <val type="list" id="158305388" >
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
    </val>
  </entry>
  <entry>
    <key type="numeric" value="6146" />
    <val type="list" id="158305420" >
      <item type="string" value="{True:&quot;$NODEID+0x%X80&quot;%(base+1),False:0x80000000}[base&lt;4]" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
    </val>
  </entry>
  <entry>
    <key type="numeric" value="6658" />
    <val type="list" id="158305932" >
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
    </val>
  </entry>
  <entry>
    <key type="numeric" value="6147" />
    <val type="list" id="158305516" >
      <item type="string" value="{True:&quot;$NODEID+0x%X80&quot;%(base+1),False:0x80000000}[base&lt;4]" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
    </val>
  </entry>
  <entry>
    <key type="numeric" value="4608" />
    <val type="list" id="158305068" >
      <item type="string" value="&quot;$NODEID+0x600&quot;" />
      <item type="string" value="&quot;$NODEID+0x580&quot;" />
    </val>
  </entry>
  <entry>
    <key type="numeric" value="4120" />
    <val type="list" id="158304940" >
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
    </val>
  </entry>
  <entry>
    <key type="numeric" value="5120" />
    <val type="list" id="158051500" >
      <item type="string" value="{True:&quot;$NODEID+0x%X00&quot;%(base+2),False:0x80000000}[base&lt;4]" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
    </val>
  </entry>
  <entry>
    <key type="numeric" value="6659" />
    <val type="list" id="158052300" >
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
    </val>
  </entry>
  <entry>
    <key type="numeric" value="5632" />
    <val type="list" id="158049740" >
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
    </val>
  </entry>
  <entry>
    <key type="numeric" value="5121" />
    <val type="list" id="158048716" >
      <item type="string" value="{True:&quot;$NODEID+0x%X00&quot;%(base+2),False:0x80000000}[base&lt;4]" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
    </val>
  </entry>
  <entry>
    <key type="numeric" value="6144" />
    <val type="list" id="158048428" >
      <item type="string" value="{True:&quot;$NODEID+0x%X80&quot;%(base+1),False:0x80000000}[base&lt;4]" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
    </val>
  </entry>
  <entry>
    <key type="numeric" value="5633" />
    <val type="list" id="158052172" >
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
    </val>
  </entry>
  <entry>
    <key type="numeric" value="6656" />
    <val type="list" id="158052204" >
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
    </val>
  </entry>
  <entry>
    <key type="numeric" value="6145" />
    <val type="list" id="158052108" >
      <item type="string" value="{True:&quot;$NODEID+0x%X80&quot;%(base+1),False:0x80000000}[base&lt;4]" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
    </val>
  </entry>
  <entry>
    <key type="numeric" value="6657" />
    <val type="list" id="158048588" >
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
      <item type="numeric" value="0" />
    </val>
  </entry>
</attr>
<attr name="SpecificMenu" type="list" id="158048396" >
</attr>
<attr name="ParamsDictionary" type="dict" id="157588308" >
</attr>
<attr name="UserMapping" type="dict" id="157588852" >
  <entry>
    <key type="numeric" value="8192" />
    <val type="dict" id="157602516" >
      <entry>
        <key type="string" value="need" />
        <val type="False" value="" />
      </entry>
      <entry>
        <key type="string" value="values" />
        <val type="list" id="158052332" >
          <item type="dict" id="157586676" >
            <entry>
              <key type="string" value="access" />
              <val type="string" value="rw" />
            </entry>
            <entry>
              <key type="string" value="pdo" />
              <val type="True" value="" />
            </entry>
            <entry>
              <key type="string" value="type" />
              <val type="numeric" value="3" />
            </entry>
            <entry>
              <key type="string" value="name" />
              <val type="string">OutVar</val>
            </entry>
          </item>
        </val>
      </entry>
      <entry>
        <key type="string" value="name" />
        <val type="string">OutVar</val>
      </entry>
      <entry>
        <key type="string" value="struct" />
        <val type="numeric" value="1" />
      </entry>
    </val>
  </entry>
  <entry>
    <key type="numeric" value="8193" />
    <val type="dict" id="157535468" >
      <entry>
        <key type="string" value="need" />
        <val type="False" value="" />
      </entry>
      <entry>
        <key type="string" value="values" />
        <val type="list" id="158305004" >
          <item type="dict" id="158343620" >
            <entry>
              <key type="string" value="access" />
              <val type="string" value="rw" />
            </entry>
            <entry>
              <key type="string" value="pdo" />
              <val type="True" value="" />
            </entry>
            <entry>
              <key type="string" value="type" />
              <val type="numeric" value="3" />
            </entry>
            <entry>
              <key type="string" value="name" />
              <val type="string">InVar</val>
            </entry>
          </item>
        </val>
      </entry>
      <entry>
        <key type="string" value="name" />
        <val type="string">InVar</val>
      </entry>
      <entry>
        <key type="string" value="struct" />
        <val type="numeric" value="1" />
      </entry>
    </val>
  </entry>
</attr>
<attr name="DS302" type="dict" id="158328188" >
</attr>
<attr name="ProfileName" type="string" value="None" />
<attr name="Type" type="string" value="slave" />
<attr name="ID" type="numeric" value="0" />
<attr name="Name" type="string" value="SlaveNode" />
</PyObject>
beremiz