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Read MAC address from EEPROM #45

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Merged
oddstr13 merged 1 commit into from
Feb 7, 2025
Merged

Read MAC address from EEPROM #45

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31 changes: 25 additions & 6 deletions src/src.ino
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Original file line number Diff line number Diff line change
Expand Up @@ -17,15 +17,15 @@
#define PN7150_VEN (uint8_t)(12)
#define PN7150_ADDR (uint8_t)(0x28)

#define MAC_EEPROM_ADDR (uint8_t)(0x50)

Electroniccats_PN7150 nfc(PN7150_IRQ, PN7150_VEN, PN7150_ADDR, &PN7150_WIRE);
String getHexRepresentation(const byte* data, const uint32_t numBytes);
void displayCardInfo();

// assign a MAC address for the Ethernet controller.
// fill in your address here:
// TODO: Automatic MAC address configuration

byte mac[] = {
0x98, 0x76, 0xB6, 0x12, 0xE9, 0x97
0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
// Set the static IP address to use if the DHCP fails to assign
IPAddress ip(192, 168, 42, 177);
Expand All @@ -41,14 +41,33 @@ HttpClient http = HttpClient(ethernet, url.host(), url.port());
IPAddress my_ip;

void setup() {
// You can use Ethernet.init(pin) to configure the CS pin
Ethernet.init(D10); // D10 challenger NFC marking == GPIO5, matches with FeatherWing Ethernet

// start serial port:
Serial.begin(115200);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
Serial.print("NFCScanner "); // TODO: Print version
Serial.println();

// Read MAC address from EEPROM
Wire.begin();

Wire.beginTransmission(MAC_EEPROM_ADDR);
Wire.write(0xFA); // EUI-48 address location
Wire.endTransmission(false);

Wire.requestFrom(MAC_EEPROM_ADDR, 6);
size_t mac_bytes_read = 0;
if (Wire.available() > 0) {
mac_bytes_read = Wire.readBytes(mac, 6);
}

Serial.print("MAC: ");
Serial.println(getHexRepresentation(mac, 6));

// You can use Ethernet.init(pin) to configure the CS pin
Ethernet.init(D10); // D10 challenger NFC marking == GPIO5, matches with FeatherWing Ethernet

// start the Ethernet connection:
Serial.println("Initialize Ethernet with DHCP:");
Expand Down