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Update GetChipID.ino (#4070)

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Co-authored-by: Me No Dev <me-no-dev@users.noreply.github.com>
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cweinhofer 2020-09-30 08:24:29 -04:00 committed by GitHub
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commit d56267bd8c
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1 changed files with 18 additions and 5 deletions
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libraries/ESP32/examples/ChipID/GetChipID/GetChipID.ino
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@ -1,17 +1,30 @@
uint64_t chipid;
/* The true ESP32 chip ID is essentially its MAC address.
This sketch provides an alternate chip ID that matches
the output of the ESP.getChipId() function on ESP8266
(i.e. a 32-bit integer matching the last 3 bytes of
the MAC address. This is less unique than the
MAC address chip ID, but is helpful when you need
an identifier that can be no more than a 32-bit integer
(like for switch...case).
created 2020-06-07 by cweinhofer
with help from Cicicok */
uint32_t chipId = 0;
void setup() {
Serial.begin(115200);
}
void loop() {
chipid=ESP.getEfuseMac();//The chip ID is essentially its MAC address(length: 6 bytes).
Serial.printf("ESP32 Chip ID = %04X",(uint16_t)(chipid>>32));//print High 2 bytes
Serial.printf("%08X\n",(uint32_t)chipid);//print Low 4bytes.
for(int i=0; i<17; i=i+8) {
chipId |= ((ESP.getEfuseMac() >> (40 - i)) & 0xff) << i;
}
Serial.printf("ESP32 Chip model = %s Rev %d\n", ESP.getChipModel(), ESP.getChipRevision());
Serial.printf("This chip has %d cores\n", ESP.getChipCores());
Serial.print("Chip ID: "); Serial.println(chipId);
delay(3000);
}