ESP8266 Community Forum

- Mon Jan 30, 2017 8:03 am #61766 Sketch that compiles OK for Arduino, doesn't for NodeMCU 1.0 (ESP-12E) V3 (LoLin) Module

Setup details
Arduino IDE (version 1.8.2), Running on a Raspberry Pi 3
(Rpi OS: "Raspbian GNU/Linux", VERSION="8 (jessie)", Debian)

NodeMCU (ESP_12E) V3 (LoLin) Module connected to Raspberry Pi USB Port

DHT22 and a 20x4 LCD I2C Display connected to NodeMCU Module
NodeMCU Conections data:

DHT and LCD Display Pins connections to Node MCU Pins
------------------------------------------------------------------------------------
DHT22 and LCD Display “VCC” Pins to VU
DHT22 “Data” Pin to D4 (GPIO2)
DHT22 and LCD Display “GND” Pins to G
LCD Display “SCL” Pin to D1
LCD Display “SDA” Pin to D2


Error Message while Compiling Sketch for NodeMCU 1.0 (ESP-12E) V3 (LoLin) Module
Arduino: 1.8.2 Hourly Build 2017/01/20 06:19 (Linux), Board: "NodeMCU 1.0 (ESP-12E Module), 160 MHz, 115200, 4M (3M SPIFFS)"

Build options changed, rebuilding all
In file included from /home/pi/Arduino/libraries/DHT/dht.h:18:0,
from /home/pi/Arduino/libraries/DHT/dht.cpp:30:
/home/pi/Arduino/libraries/DHT/dht.cpp: In member function 'int dht::_readSensor(uint8_t, uint8_t)':
/home/pi/.arduino15/packages/esp8266/hardware/esp8266/2.3.0/cores/esp8266/Arduino.h:226:63: error: cannot convert 'volatile uint32_t* {aka volatile unsigned int*}' to 'volatile uint8_t* {aka volatile unsigned char*}' in initialization
#define portInputRegister(port) ((volatile uint32_t*) &GPI)
^
/home/pi/Arduino/libraries/DHT/dht.cpp:116:29: note: in expansion of macro 'portInputRegister'
volatile uint8_t *PIR = portInputRegister(port);
^
exit status 1
Error compiling for board NodeMCU 1.0 (ESP-12E Module).

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

(Error Message with showing Verbose Output, and the Sketch used are attached)
(However, I did find other functions to have the NodeMCU Module to Read Humidity and Temp. data using DHT22 work satisfactorily.)

You do not have the required permissions to view the files attached to this post.

- Tue Jan 31, 2017 10:50 am #61822 I tested the Sketch with a NodeMCU Version 0.9 (ESP-12) Module also, and I have the same problem.
(My initial post/Report was for a test with Version 1.0 LoLin V3 Module)

- Tue Jan 31, 2017 7:45 pm #61847 The DHT library has code specific to AVR CPUs so will not work on the ESP8266. Update the DHT library to the latest version or try a different DHT library that is designed to work on the ESP8266.