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by jassi007
Mon Mar 26, 2018 10:39 am
Forum: ESP8266 HDK
Topic: Is there a serial number or unique ID in the chip
Replies: 10
Views: 24241

Re: Is there a serial number or unique ID in the chip

The Chip ID is 32 bit. Check the return value of system_get_chip_id() function.
Hence, around 4.3 billion different Chip IDs.
And with Espressif claiming to have shipped 100 million chips as of January 2018, I believe the chip ID is unique so far.
by jassi007
Mon Mar 26, 2018 10:33 am
Forum: ESP8266 HDK
Topic: Is there a serial number or unique ID in the chip
Replies: 10
Views: 24241

Re: Is there a serial number or unique ID in the chip

blubb wrote:Chip id is only 24 bit, so if more than 16.8 million chips have been manufactured, it cannot be unique. ;)



The Chip ID is 32 bit. Check the return value of system_get_chip_id() function.

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