NodeMCU

Version 4.1 by Leon Poon on 2021/01/20 14:15

Nodemcu V3 Lua WiFi module integrated ESP8266 + additional memory 32Mbit FLASH, USB serial port CP2102

platformio.ini

[env:nodemcuv2]
platform = espressif8266
board = nodemcuv2
framework = arduino
lib_deps = arduino-libraries/NTPClient@^3.1.0

Blink all GPIO pin and NTP (uses https://platformio.org/lib/show/551/NTPClient/):

main.cpp

#include <Arduino.h>
#include <ESP8266WiFi.h>
#include <WiFiUdp.h>
#include <NTPClient.h>
const char *ssid     = "<ssid>";
const char *password = "<wpa_password>";

WiFiUDP ntpUDP;

NTPClient timeClient(ntpUDP, "ntp-b.nist.gov", 0, 60000);

void setup() {
for (uint8_t i = 0; i <= 5; i++)
  pinMode(i, OUTPUT);
for (uint8_t i = 12; i <= 16; i++)
  pinMode(i, OUTPUT);

// Serial.begin(115200);

  WiFi.begin(ssid, password);

while ( WiFi.status() != WL_CONNECTED ) {
    delay ( 500 );
   // Serial.print ( "." );
}

  timeClient.begin();
}

unsigned long t;

void f(uint8_t hl) {
  timeClient.update();
unsigned long t1;
for (; (t1 = timeClient.getEpochTime()) == t; delay(1));

  t = t1;
// Serial.println(timeClient.getFormattedTime());

for (uint8_t i = 0; i <= 5; i++)
  digitalWrite(i, hl);
for (uint8_t i = 12; i <= 16; i++)
  digitalWrite(i, hl);
}

void loop() {
  f(HIGH);
  f(LOW);
}

Upload log

Configuring upload protocol...
AVAILABLE: espota, esptool
CURRENT: upload_protocol = esptool
Looking for upload port...
Auto-detected: /dev/ttyUSB0
Uploading .pio/build/nodemcuv2/firmware.bin
esptool.py v2.8
Serial port /dev/ttyUSB0
Connecting....
Chip is ESP8266EX
Features: WiFi
Crystal is 26MHz
MAC: AA:BB:CC:DD:EE:FF
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Auto-detected Flash size: 4MB
Compressed 269888 bytes to 199316...

Writing at 0x00000000... (7 %)
Writing at 0x00004000... (15 %)
Writing at 0x00008000... (23 %)
Writing at 0x0000c000... (30 %)
Writing at 0x00010000... (38 %)
Writing at 0x00014000... (46 %)
Writing at 0x00018000... (53 %)
Writing at 0x0001c000... (61 %)
Writing at 0x00020000... (69 %)
Writing at 0x00024000... (76 %)
Writing at 0x00028000... (84 %)
Writing at 0x0002c000... (92 %)
Writing at 0x00030000... (100 %)
Wrote 269888 bytes (199316 compressed) at 0x00000000 in 17.6 seconds (effective 122.6 kbit/s)...
Hash of data verified.

Leaving...
Hard resetting via RTS pin...