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Add ESP.getChipId() function to get ESP32's ChipID. (#322)

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* Add ESP.getChipId() function to get ESP32's ChipID.

* change getChipId() to getEfuseMac()
This commit is contained in:
WEMOS Electronics 2017-05-05 01:59:54 -05:00 committed by Me No Dev
parent cc73f17add
commit a38ffe58fe
3 changed files with 24 additions and 0 deletions
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8
cores/esp32/Esp.cpp
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@ -212,3 +212,11 @@ bool EspClass::flashRead(uint32_t offset, uint32_t *data, size_t size)
{ {
return spi_flash_read(offset, (uint32_t*) data, size) == ESP_OK; return spi_flash_read(offset, (uint32_t*) data, size) == ESP_OK;
} }
uint64_t EspClass::getEfuseMac(void)
{
uint64_t _chipmacid;
esp_efuse_read_mac((uint8_t*) (&_chipmacid));
return _chipmacid;
}

2
cores/esp32/Esp.h
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@ -76,6 +76,8 @@ public:
bool flashWrite(uint32_t offset, uint32_t *data, size_t size); bool flashWrite(uint32_t offset, uint32_t *data, size_t size);
bool flashRead(uint32_t offset, uint32_t *data, size_t size); bool flashRead(uint32_t offset, uint32_t *data, size_t size);
uint64_t getEfuseMac();
}; };
extern EspClass ESP; extern EspClass ESP;

14
libraries/ESP32/examples/ChipID/GetChipID/GetChipID.ino Normal file
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@ -0,0 +1,14 @@
uint64_t chipid;
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.
delay(3000);
}