Initial commit

.gitignore

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+.pio
+.pioenvs
+.piolibdeps
+.clang_complete
+.gcc-flags.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 < https://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
+#   < https://docs.platformio.org/page/ci/travis.html >
+#
+# * User Guide for `platformio ci` command
+#   < https://docs.platformio.org/page/userguide/cmd_ci.html >
+#
+#
+# Please choose 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 be 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

include/README

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+
+This directory is intended for project header files.
+
+A header file is a file containing C declarations and macro definitions
+to be shared between several project source files. You request the use of a
+header file in your project source file (C, C++, etc) located in `src` folder
+by including it, with the C preprocessing directive `#include'.
+
+```src/main.c
+
+#include "header.h"
+
+int main (void)
+{
+ ...
+}
+```
+
+Including a header file produces the same results as copying the header file
+into each source file that needs it. Such copying would be time-consuming
+and error-prone. With a header file, the related declarations appear
+in only one place. If they need to be changed, they can be changed in one
+place, and programs that include the header file will automatically use the
+new version when next recompiled. The header file eliminates the labor of
+finding and changing all the copies as well as the risk that a failure to
+find one copy will result in inconsistencies within a program.
+
+In C, the usual convention is to give header files names that end with `.h'.
+It is most portable to use only letters, digits, dashes, and underscores in
+header file names, and at most one dot.
+
+Read more about using header files in official GCC documentation:
+
+* Include Syntax
+* Include Operation
+* Once-Only Headers
+* Computed Includes
+
+https://gcc.gnu.org/onlinedocs/cpp/Header-Files.html

lib/README

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+
+This directory is intended for project specific (private) libraries.
+PlatformIO will compile them to static libraries and link into executable file.
+
+The source code of each library should be placed in a an own separate directory
+("lib/your_library_name/[here are source files]").
+
+For example, see a structure of the following two libraries `Foo` and `Bar`:
+
+|--lib
+|  |
+|  |--Bar
+|  |  |--docs
+|  |  |--examples
+|  |  |--src
+|  |     |- Bar.c
+|  |     |- Bar.h
+|  |  |- library.json (optional, custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html
+|  |
+|  |--Foo
+|  |  |- Foo.c
+|  |  |- Foo.h
+|  |
+|  |- README --> THIS FILE
+|
+|- platformio.ini
+|--src
+   |- main.c
+
+and a contents of `src/main.c`:
+```
+#include <Foo.h>
+#include <Bar.h>
+
+int main (void)
+{
+  ...
+}
+
+```
+
+PlatformIO Library Dependency Finder will find automatically dependent
+libraries scanning project source files.
+
+More information about PlatformIO Library Dependency Finder
+- https://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
+; https://docs.platformio.org/page/projectconf.html
+
+[env:nanoatmega168]
+platform = atmelavr
+board = nanoatmega168
+framework = arduino
+lib_deps = RF24
+upload_speed = 19200
+upload_port = COM8

src/main.cpp

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+/*
+* Getting Started example sketch for nRF24L01+ radios
+* This is a very basic example of how to send data from one node to another
+* Updated: Dec 2014 by TMRh20
+*/
+
+#include <SPI.h>
+#include "nRF24L01.h"
+#include "RF24.h"
+
+/****************** User Config ***************************/
+/***      Set this radio as radio number 0 or 1         ***/
+bool radioNumber = 0;
+
+/* Hardware configuration: Set up nRF24L01 radio on SPI bus plus pins 7 & 8 */
+RF24 radio(8, 10); // CSN, CE
+/**********************************************************/
+
+byte addresses[][6] = {"1ClkM","2ClkM"};
+
+// Used to control whether this node is sending or receiving
+bool role = 0;
+
+void setup() {
+  Serial.begin(19200);
+  Serial.println(F("*** RECEIVE DUMP ****"));
+  //Serial.println(F("*** PRESS 'T' to begin transmitting to the other node"));
+
+  radio.begin();
+
+  // Set the PA Level low to prevent power supply related issues since this is a
+ // getting_started sketch, and the likelihood of close proximity of the devices. RF24_PA_MAX is default.
+  radio.setPALevel(RF24_PA_LOW);
+  radio.setChannel(1);
+  radio.setDataRate(RF24_2MBPS);
+  radio.setCRCLength(RF24_CRC_8);
+  radio.setAutoAck(0);
+
+  // Open a writing and reading pipe on each radio, with opposite addresses
+  if (radioNumber) {
+    radio.openWritingPipe(addresses[1]);
+    radio.openReadingPipe(1,addresses[0]);
+  } else {
+    radio.openWritingPipe(addresses[0]);
+    radio.openReadingPipe(1,addresses[1]);
+  }
+  radio.powerUp();
+  Serial.println("Radio details:");
+  radio.printDetails();
+
+  // Start the radio listening for data
+  radio.startListening();
+}
+
+void loop() {
+  char buffer[32];
+  memset(buffer, 0, 32);
+
+  if (radio.available()) {
+    radio.read(buffer, 32);
+    Serial.print(F("Received: type="));
+    Serial.print(buffer[0]);
+    if (buffer[0] == 'c') {
+      Serial.print(F(", day="));
+      Serial.print((int) buffer[1]);
+      Serial.print(F(", time="));
+      Serial.print((int) buffer[2]);
+      Serial.print(':');
+      Serial.print((int) buffer[3]);
+      Serial.print(':');
+      Serial.print((int) buffer[4]);
+      Serial.print(F(", speed=1:"));
+      Serial.println(1000.0 / ((int) buffer[5] << 2));
+    } else if (buffer[0] == 'R') {
+      Serial.print(F(", clockName="));
+      Serial.println(buffer+1);
+    } else {
+      Serial.print(F("Unknown message received. Type="));
+      Serial.print(buffer[0]);
+      for (int i=0; i<8; ++i) {
+        Serial.print(' '); Serial.print(buffer[i+1], HEX);
+      }
+      Serial.println(F(" ..."));
+    }
+ }
+
+ static unsigned long lastTick = 0;
+ if (millis() - lastTick > 5000) {
+   lastTick = millis();
+   Serial.print("#");
+ }
+
+
+
+
+#if 0
+/****************** Ping Out Role ***************************/
+if (role == 1)  {
+
+    radio.stopListening();                                    // First, stop listening so we can talk.
+
+
+    Serial.println(F("Now sending"));
+
+    unsigned long start_time = micros();                             // Take the time, and send it.  This will block until complete
+     if (!radio.write( &start_time, sizeof(unsigned long) )){
+       Serial.println(F("failed"));
+     }
+
+    radio.startListening();                                    // Now, continue listening
+
+    unsigned long started_waiting_at = micros();               // Set up a timeout period, get the current microseconds
+    boolean timeout = false;                                   // Set up a variable to indicate if a response was received or not
+
+    while ( ! radio.available() ){                             // While nothing is received
+      if (micros() - started_waiting_at > 200000 ){            // If waited longer than 200ms, indicate timeout and exit while loop
+          timeout = true;
+          break;
+      }
+    }
+
+    if ( timeout ){                                             // Describe the results
+        Serial.println(F("Failed, response timed out."));
+    }else{
+        unsigned long got_time;                                 // Grab the response, compare, and send to debugging spew
+        radio.read( &got_time, sizeof(unsigned long) );
+        unsigned long end_time = micros();
+
+        // Spew it
+        Serial.print(F("Sent "));
+        Serial.print(start_time);
+        Serial.print(F(", Got response "));
+        Serial.print(got_time);
+        Serial.print(F(", Round-trip delay "));
+        Serial.print(end_time-start_time);
+        Serial.println(F(" microseconds"));
+    }
+
+    // Try again 1s later
+    delay(1000);
+  }
+
+
+
+/****************** Pong Back Role ***************************/
+
+  if ( role == 0 )
+  {
+    unsigned long got_time;
+
+    if( radio.available()){
+                                                                    // Variable for the received timestamp
+      while (radio.available()) {                                   // While there is data ready
+        radio.read( &got_time, sizeof(unsigned long) );             // Get the payload
+      }
+
+      radio.stopListening();                                        // First, stop listening so we can talk
+      radio.write( &got_time, sizeof(unsigned long) );              // Send the final one back.
+      radio.startListening();                                       // Now, resume listening so we catch the next packets.
+      Serial.print(F("Sent response "));
+      Serial.println(got_time);
+   }
+ }
+
+
+
+
+/****************** Change Roles via Serial Commands ***************************/
+
+  if ( Serial.available() )
+  {
+    char c = toupper(Serial.read());
+    if ( c == 'T' && role == 0 ){
+      Serial.println(F("*** CHANGING TO TRANSMIT ROLE -- PRESS 'R' TO SWITCH BACK"));
+      role = 1;                  // Become the primary transmitter (ping out)
+
+   }else
+    if ( c == 'R' && role == 1 ){
+      Serial.println(F("*** CHANGING TO RECEIVE ROLE -- PRESS 'T' TO SWITCH BACK"));
+       role = 0;                // Become the primary receiver (pong back)
+       radio.startListening();
+
+    }
+  }
+#endif
+
+} // Loop

test/README

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+
+This directory is intended for PIO Unit Testing and project tests.
+
+Unit Testing is a software testing method by which individual units of
+source code, sets of one or more MCU program modules together with associated
+control data, usage procedures, and operating procedures, are tested to
+determine whether they are fit for use. Unit testing finds problems early
+in the development cycle.
+
+More information about PIO Unit Testing:
+- https://docs.platformio.org/page/plus/unit-testing.html