Readings on a Google sheet, with deep sleep

Every ten minutes the board wakes up, reads temperature, humidity and pressure, adds a row to a Google sheet and goes back to sleep. From your phone you see the history and make charts with the sheet's own tools. It is free, and the board sleeps almost all the time.

// Google Apps Script: receives the readings from the board and appends them as a row to the sheet.
// Paste it in Extensions > Apps Script of the Google sheet, then deploy it as a web app.
function doGet(e) {
  const sheet = SpreadsheetApp.getActiveSpreadsheet().getSheets()[0];
  const t = e.parameter.t;               // temperature
  const u = e.parameter.u;               // humidity
  const p = e.parameter.p;               // pressure
  sheet.appendRow([new Date(), t, u, p]);    // date and time, then the three values
  return ContentService.createTextOutput('ok');
}

// Every 10 minutes the board wakes up, reads the BME280, sends the values to a Google sheet and goes back to sleep.
#include <WiFi.h>
#include <WiFiClientSecure.h>
#include <HTTPClient.h>
#include <Adafruit_BME280.h>

const char* NETWORK = "your-network-name";
const char* PASSWORD = "your-network-password";
const String SCRIPT_URL = "https://script.google.com/macros/s/YOUR-ID/exec";   // from the web app (step 3)
const uint64_t MINUTES = 10;                                                  // how often to measure

RTC_DATA_ATTR int wakeups = 0;     // stays in memory even during deep sleep
Adafruit_BME280 bme;

void sleepNow() {
  Serial.printf("Going to sleep for %llu minutes\n", MINUTES);
  Serial.flush();
  esp_sleep_enable_timer_wakeup(MINUTES * 60ULL * 1000000ULL);   // the time is in microseconds
  esp_deep_sleep_start();                                         // there is no coming back from here: on waking, setup() starts again
}

void setup() {
  Serial.begin(115200);
  wakeups++;
  Serial.printf("Wake-up no. %d\n", wakeups);
  if (!bme.begin(0x77)) {
    Serial.println("BME280 not found");
    sleepNow();
  }
  float t = bme.readTemperature();
  float u = bme.readHumidity();
  float p = bme.readPressure() / 100.0;

  WiFi.mode(WIFI_STA);
  WiFi.begin(NETWORK, PASSWORD);
  unsigned long start = millis();
  while (WiFi.status() != WL_CONNECTED && millis() - start < 15000) delay(250);
  if (WiFi.status() != WL_CONNECTED) {        // no network: try again at the next wake-up
    Serial.println("Wi-Fi not available");
    sleepNow();
  }

  WiFiClientSecure client;
  client.setInsecure();                       // no certificate check: see the guide
  HTTPClient http;
  http.setFollowRedirects(HTTPC_STRICT_FOLLOW_REDIRECTS);   // Google answers with a redirect to follow
  String url = SCRIPT_URL + "?t=" + String(t, 1) + "&u=" + String(u, 0) + "&p=" + String(p, 0);
  http.begin(client, url);
  int code = http.GET();
  Serial.printf("Response: %d %s\n", code, http.getString().c_str());
  http.end();
  sleepNow();
}

void loop() {}   // never reached: after setup() the board sleeps