Ai-Thinker RD-01 24GHz mmWave Radar Sensor

#include <stdio.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "driver/uart.h"

// Rd-01 on UART2: module TX -> GPIO16 (RX2), RX -> GPIO17 (TX2), 115200 baud
#define RADAR_UART UART_NUM_2

void app_main(void)
{
    uart_config_t config = {
        .baud_rate = 115200,
        .data_bits = UART_DATA_8_BITS,
        .parity = UART_PARITY_DISABLE,
        .stop_bits = UART_STOP_BITS_1,
        .flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
    };
    ESP_ERROR_CHECK(uart_param_config(RADAR_UART, &config));
    ESP_ERROR_CHECK(uart_set_pin(RADAR_UART, 17, 16, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE));
    ESP_ERROR_CHECK(uart_driver_install(RADAR_UART, 1024, 0, 0, NULL, 0));

    uint8_t buf[64];
    while (1) {
        int len = uart_read_bytes(RADAR_UART, buf, sizeof(buf), pdMS_TO_TICKS(200));
        if (len > 0) {
            for (int i = 0; i < len; i++)
                printf("%02X ", buf[i]);
            printf("\n");
        }
    }
}

[env:esp32dev]
platform = espressif32
board = esp32dev
framework = arduino
monitor_speed = 115200

#include <Arduino.h>
// Rd-01: module TX -> GPIO16 (RX2), RX -> GPIO17 (TX2), 115200 baud
HardwareSerial radar(2);

void setup() {
  Serial.begin(115200);
  radar.begin(115200, SERIAL_8N1, 16, 17);
  Serial.println("Rd-01 frame monitor");
}

void loop() {
  while (radar.available()) {
    uint8_t b = radar.read();
    if (b < 0x10) Serial.print("0");
    Serial.print(b, HEX);
    Serial.print(" ");
  }
  Serial.println();
  delay(200);
}

from machine import UART
import time

# Rd-01: module TX -> GPIO16 (RX2), RX -> GPIO17 (TX2), 115200 baud
uart = UART(2, baudrate=115200, tx=17, rx=16)

while True:
    data = uart.read()
    if data:
        print(" ".join("{:02X}".format(b) for b in data))
    time.sleep(0.2)