Question about "ecx_siifind" function

[starofsky]

• Why we do a = ECT_SII_START << 1; ?

• In code we have: context->slavelist[slave].CoEdetails = ecx_siigetbyte(context, slave, ssigen + 0x07); context->slavelist[slave].FoEdetails = ecx_siigetbyte(context, slave, ssigen + 0x08); context->slavelist[slave].EoEdetails = ecx_siigetbyte(context, slave, ssigen + 0x09); context->slavelist[slave].SoEdetails = ecx_siigetbyte(context, slave, ssigen + 0x0a); do "0x07->0x0a" have relative with "ETG.1000 EtherCAT Specification, Part 6, table 21" Parameter	Byte address
  COE detail	0x0005
  FOE detail	0x0006
  EOE detail	0x0007

[mheden]

Yes, It relates to table 21 in 1000/6. The reason that all offsets are +2 compared to the values in the table is that there is a uint16 value after the category header containing the size that we need to step over.

See Table 17 for more info on the structure.

[mheden]

The << 2 is to convert a word offset to a byte offset.

[nakarlsson]

No respone but thumbs up so we Close it