Unable to wake the XIAO ESP32C3 up from deep sleep with a PIR sensor

[PJ_Glasso]

Hi there,
5ven and welcome,
I have this code working with a button on D0, Blinks 10 times , Sleeps and wakes up If you press the button.
Here’s the code and the Output and a picture of the hardware setup

#define LED 10  // or use LED_BUILTIN for on-board LED
#define INTERRUPT_PIN 2
RTC_DATA_ATTR int bootCount = 0;

void setup() {
  Serial.begin(115200);
  delay(1000);

  pinMode(LED, OUTPUT);
  digitalWrite(LED, LOW);

  ++bootCount;
  Serial.println("Boot number: " + String(bootCount));

  print_wakeup_reason();

  Serial.println("Going to blink the LED 10 times");
  blink(10);  // Allow time for wakeup
  Serial.println("Going to sleep now");
  delay (250);
 // esp_sleep_enable_bt_wakeup(void)
  esp_deep_sleep_enable_gpio_wakeup(1 << INTERRUPT_PIN, ESP_GPIO_WAKEUP_GPIO_HIGH);
    delay (250);
  esp_deep_sleep_start();

  Serial.println("This will never be printed");
}

void loop() { }

void blink(int times) {
  for (int i = 0; i < times; i++) {
    digitalWrite(LED, HIGH);
    delay(1000);

    digitalWrite(LED, LOW);
    delay(1000);
    Serial.print("Blink ");
    Serial.println(i + 1);
  }
}

void print_wakeup_reason() {
  esp_sleep_wakeup_cause_t wakeup_reason;

  wakeup_reason = esp_sleep_get_wakeup_cause();

  switch (wakeup_reason) {
    case ESP_SLEEP_WAKEUP_EXT0:
      Serial.println("Wakeup caused by external signal using RTC_IO");
      break;
    case ESP_SLEEP_WAKEUP_EXT1:
      Serial.println("Wakeup caused by external signal using RTC_CNTL");
      break;
    case ESP_SLEEP_WAKEUP_TIMER:
      Serial.println("Wakeup caused by timer");
      break;
    case ESP_SLEEP_WAKEUP_TOUCHPAD:
      Serial.println("Wakeup caused by touchpad");
      break;
    case ESP_SLEEP_WAKEUP_ULP:
      Serial.println("Wakeup caused by ULP program");
      break;
    default:
      Serial.printf("Wakeup was not caused by deep sleep: %d\n", wakeup_reason);
      break;
  }
}

The Serial Out.

ESP-ROM:esp32c3-api1-20210207
Build:Feb  7 2021
rst:0x15 (USB_UART_CHIP_RESET),boot:0x8 (SPI_FAST_FLASH_BOOT)
Saved PC:0x4200f3a4
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fcd5810,len:0x438
load:0x403cc710,len:0x918
load:0x403ce710,len:0x25f4
entry 0x403cc710
Boot number: 1
Wakeup was not caused by deep sleep: 0
Going to blink the LED 10 times
Blink 1
Blink 2
Blink 3
Blink 4
Blink 5
Blink 6
Blink 7
Blink 8
Blink 9
Blink 10
Going to sleep now

push the button it wakes up.
HTH
GL PJ