Serial Number, Unique ID available on interface for powerStep01

[pf8645]

For a project using several powerStep01 drivers it would be very useful, if each powerStep01 could be identified by a unique ID or a serial number.

In the interface description no such register is defined. Is there maybe a hidden register available which could be used?

[Peter BENSCH]

No, the PowerSTEP01 does not contain a Dev_ID or similar.

This should not be necessary, as each individual PowerSTEP01 connected to a common MCU can be identified either by its /CS line or by its position in the daisy chain.

Does it answer your question?

Regards

/Peter

[pf8645]

thanks, it does answer my question.

The unique ID would have been handy to identify individual driver boards that are connected by a connector to the main MCU (e. g. for field returns, ect)

[Peter BENSCH · Accepted solution]

Such an identification of a board could be realised in different ways, e.g. by a small EEPROM on the driver board, which is read out via I2C or SPI. But I agree with you that this is probably not feasible without a hardware change.

If the problem is solved, please mark this thread as answered by selecting Select as best, as also explained here. This will help other users find that answer faster.

Good luck!

/Peter

[SJank.3]

Also probably there was no need for such an ID register yet, because you can use your SPI protocol in Daisy Chain configuration and with one GPIO pin for every CS pin on each powerstep01 you can can choose which of them gets the information you want them to get