Can't read firmware

[mgiesen]

I don't get the firmware version out of the sensor. Anyone know what to do?

Code:

#define HUMAN_PRESENCE_RX 17
#define HUMAN_PRESENCE_TX 18

ld2410 radar;

void setup()
{
  delay(100);

  Serial.begin(115200);

  delay(500);

  Serial2.begin(256000, SERIAL_8N1, HUMAN_PRESENCE_TX, HUMAN_PRESENCE_RX);

  delay(500);

  radar.debug(Serial);
  radar.begin(Serial2);

  Serial.println();
}

void loop()
{

  if (radar.read())
  {
    if (radar.presenceDetected())
    {
      Serial.println("True");
    }
    else
    {
      Serial.println("False");
    }
  }

  delay(1000);
}

Output:

ESP-ROM:esp32s3-20210327
Build:Mar 27 2021
rst:0x1 (POWERON),boot:0xb (SPI_FAST_FLASH_BOOT)
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fce3808,len:0x4bc
load:0x403c9700,len:0xbd8
load:0x403cc700,len:0x2a0c
entry 0x403c98d0
ld2410 started

LD2410 firmware: no response

Cmnd : FD FC FB FA 08 00 FF 01 00 00 01 00 40 00 04 03 02 01 
ACK frame payload: 8 bytes
ACK for entering configuration mode: OKFalse
True
True
True
True
True
False