ESP32 String'den Char*'a çevirme

#include "BluetoothSerial.h"

#if !defined(CONFIG_BT_ENABLED) || !defined(CONFIG_BLUEDROID_ENABLED)
#error Bluetooth is not enabled! Please run `make menuconfig` to and enable it
#endif
char* veri;

BluetoothSerial SerialBT;


void setup() {
  Serial.begin(115200);
  SerialBT.begin("ESP32test"); //Bluetooth device name

}

void loop() {
  if (SerialBT.available()) {
    char veri = SerialBT.readStringUntil('\n');
    Serial.println(veri);