initial commit

.gitignore

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+.pioenvs
+.piolibdeps
+.vscode/.browse.c_cpp.db*
+.vscode/c_cpp_properties.json
+.vscode/launch.json

.travis.yml

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+# Continuous Integration (CI) is the practice, in software
+# engineering, of merging all developer working copies with a shared mainline
+# several times a day < http://docs.platformio.org/page/ci/index.html >
+#
+# Documentation:
+#
+# * Travis CI Embedded Builds with PlatformIO
+#   < https://docs.travis-ci.com/user/integration/platformio/ >
+#
+# * PlatformIO integration with Travis CI
+#   < http://docs.platformio.org/page/ci/travis.html >
+#
+# * User Guide for `platformio ci` command
+#   < http://docs.platformio.org/page/userguide/cmd_ci.html >
+#
+#
+# Please choice one of the following templates (proposed below) and uncomment
+# it (remove "# " before each line) or use own configuration according to the
+# Travis CI documentation (see above).
+#
+
+
+#
+# Template #1: General project. Test it using existing `platformio.ini`.
+#
+
+# language: python
+# python:
+#     - "2.7"
+#
+# sudo: false
+# cache:
+#     directories:
+#         - "~/.platformio"
+#
+# install:
+#     - pip install -U platformio
+#     - platformio update
+#
+# script:
+#     - platformio run
+
+
+#
+# Template #2: The project is intended to by used as a library with examples
+#
+
+# language: python
+# python:
+#     - "2.7"
+#
+# sudo: false
+# cache:
+#     directories:
+#         - "~/.platformio"
+#
+# env:
+#     - PLATFORMIO_CI_SRC=path/to/test/file.c
+#     - PLATFORMIO_CI_SRC=examples/file.ino
+#     - PLATFORMIO_CI_SRC=path/to/test/directory
+#
+# install:
+#     - pip install -U platformio
+#     - platformio update
+#
+# script:
+#     - platformio ci --lib="." --board=ID_1 --board=ID_2 --board=ID_N

.vscode/extensions.json

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+{
+	// See http://go.microsoft.com/fwlink/?LinkId=827846
+	// for the documentation about the extensions.json format
+	"recommendations": [
+		"platformio.platformio-ide"
+	]
+}

.vscode/settings.json

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+{
+    "terminal.integrated.env.linux": {
+        "PATH": "/home/salfter/.platformio/penv/bin:/home/salfter/.platformio/penv:/usr/x86_64-pc-linux-gnu/gcc-bin/7.3.0:/usr/x86_64-pc-linux-gnu/aarch64-unknown-linux-gnu/gcc-bin/7.3.0:/usr/x86_64-pc-linux-gnu/avr/gcc-bin/7.3.0:/usr/lib/llvm/5/bin:/usr/local/bin:/usr/bin:/bin:/opt/bin:/usr/games/bin:/mnt/media/scripts",
+        "PLATFORMIO_CALLER": "vscode"
+    }
+}

lib/readme.txt

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+
+This directory is intended for the project specific (private) libraries.
+PlatformIO will compile them to static libraries and link to executable file.
+
+The source code of each library should be placed in separate directory, like
+"lib/private_lib/[here are source files]".
+
+For example, see how can be organized `Foo` and `Bar` libraries:
+
+|--lib
+|  |
+|  |--Bar
+|  |  |--docs
+|  |  |--examples
+|  |  |--src
+|  |     |- Bar.c
+|  |     |- Bar.h
+|  |  |- library.json (optional, custom build options, etc) http://docs.platformio.org/page/librarymanager/config.html
+|  |
+|  |--Foo
+|  |  |- Foo.c
+|  |  |- Foo.h
+|  |
+|  |- readme.txt --> THIS FILE
+|
+|- platformio.ini
+|--src
+   |- main.c
+
+Then in `src/main.c` you should use:
+
+#include <Foo.h>
+#include <Bar.h>
+
+// rest H/C/CPP code
+
+PlatformIO will find your libraries automatically, configure preprocessor's
+include paths and build them.
+
+More information about PlatformIO Library Dependency Finder
+- http://docs.platformio.org/page/librarymanager/ldf.html

platformio.ini

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+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; http://docs.platformio.org/page/projectconf.html
+
+[env:uno]
+platform = atmelavr
+board = uno
+framework = arduino

src/main.cpp

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+#include <Arduino.h>
+#include <LiquidCrystal.h>
+
+LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
+int ThermistorPin = 0;
+
+int rv; // raw value from input
+
+float R1 = 10000; // fixed resistance
+float R2; // thermistor resistance
+
+float Rt = 100000; // thermistor resistance at standard temperature
+float B = 4267; // beta for thermistor
+float T1 = 25; // standard temperature (deg C)
+
+float lnrtr2;
+float T;
+
+void setup() {
+  lcd.begin(16, 2);
+  Serial.begin(9600);
+  T1+=273.15; // convert to K
+}
+
+void loop() {
+
+  rv=analogRead(ThermistorPin);
+  R2 = R1 * (1023.0 / (float)rv - 1.0);
+
+  // http://www.daycounter.com/Calculators/Steinhart-Hart-Thermistor-Calculator.phtml
+
+  lnrtr2=log(Rt/R2);
+  T=(T1*B/lnrtr2)/(B/lnrtr2-T1)-273.15;
+
+  T = (T * 9.0)/ 5.0 + 32.0; 
+
+  Serial.print("Temperature: "); 
+  Serial.print(T);
+  Serial.println(" F"); 
+
+  lcd.clear();
+  lcd.print("Temp = ");
+  lcd.print(T);   
+  lcd.print(" F");
+
+  Serial.print("R2=");
+  Serial.print(R2);
+  Serial.println(" ohms");
+
+  Serial.println("");
+
+  delay(500);
+}