initial commit

.gitignore

@@ -0,0 +1,5 @@
+.pio
+.vscode/.browse.c_cpp.db*
+.vscode/c_cpp_properties.json
+.vscode/launch.json
+.vscode/ipch

.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"
+    ]
+}

README.md

@@ -1,2 +1,4 @@
 # micro_beacons
 
+Quellcode zum Vortrag: https://media.ccc.de/v/ds20-11329-micro_beacons
+

boards/bbcmicrobit.json

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+{
+  "build": {
+    "arduino":{
+      "ldscript": "nrf51_xxaa.ld"
+    },
+    "core": "nRF5",
+    "cpu": "cortex-m0",
+    "extra_flags": "-DARDUINO_BBC_MICROBIT -DUSE_LFRC",
+    "f_cpu": "16000000L",
+    "mcu": "nrf51822",
+    "variant": "BBCmicrobit",
+    "zephyr": {
+       "variant": "bbc_microbit"
+    }
+  },
+  "connectivity": [
+    "bluetooth"
+  ],
+  "debug": {
+    "onboard_tools": [
+      "cmsis-dap"
+    ],
+    "svd_path": "nrf51.svd",
+    "jlink_device": "nRF51822_xxAA"
+  },
+  "frameworks": [
+    "arduino",
+    "mbed",
+    "zephyr"
+  ],
+  "name": "BBC micro:bit",
+  "upload": {
+    "maximum_ram_size": 16384,
+    "maximum_size": 262144,
+    "protocol": "cmsis-dap",
+    "protocols": [
+      "cmsis-dap",
+      "mbed",
+      "jlink"
+    ]
+  },
+  "url": "https://developer.mbed.org/platforms/Microbit/",
+  "vendor": "BBC"
+}

boards/bbcmicrobit_b.json

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+{
+  "build": {
+    "cpu": "cortex-m0",
+    "f_cpu": "16000000L",
+    "mcu": "nrf51822"
+  },
+  "connectivity": [
+    "bluetooth"
+  ],
+  "debug": {
+    "onboard_tools": [
+      "cmsis-dap"
+    ],
+    "svd_path": "nrf51.svd",
+    "jlink_device": "nRF51822_xxAA"
+  },
+  "frameworks": [
+    "mbed"
+  ],
+  "name": "BBC micro:bit B(S130)",
+  "upload": {
+    "maximum_ram_size": 16384,
+    "maximum_size": 262144,
+    "protocol": "cmsis-dap",
+    "protocols": [
+      "cmsis-dap",
+      "mbed",
+      "jlink"
+    ]
+  },
+  "url": "https://developer.mbed.org/platforms/Microbit/",
+  "vendor": "BBC"
+}
+

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

mbed_app.json

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+{
+    "target_overrides": {
+        "*": {
+            "target.features_add": ["BLE"]
+        }
+    }
+}

platformio.ini

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+[env:bbcmicrobit]
+platform = nordicnrf51
+board = bbcmicrobit_b
+framework = mbed
+
+lib_deps =
+  microbit
+
+build_flags = -DNRF51_S130 
+              -std=c++11 
+              -I$PLATFORMIO_HOME_DIR/packages/framework-mbed@5.51105.190312/features/FEATURE_BLE
+build_unflags = -std=gnu++98 
+upload_protocol = mbed
+
+monitor_speed = 115200

src/main.cpp

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+#include "MicroBit.h"
+#include "ble/DiscoveredCharacteristic.h"
+#include "ble/DiscoveredService.h"
+
+uint8_t counter;
+MicroBit uBit;
+
+void advertisementCallback(const Gap::AdvertisementCallbackParams_t *params) 
+{
+
+  if (params->advertisingDataLen == 31)
+  {
+    //len=31
+    //data=02011A03036FFD17166FFD86BFAF5ACE16AB0C809B47092C07E20DF6017412
+    //     ^ ^ ^ ^ ^ ^   ^ ^ ^   ^                               ^
+    //     | | | | | |   | | |   |                               +-- Associated Encrypted Metadata
+    //     | | | | | |   | | |   +-- Rolling Proximity Identifier
+    //     | | | | | |   | | +------ Service - 0xFD6F
+    //     | | | | | |   | +-------- Type    - 0x16
+    //     | | | | | |   +---------- Length  - 0x17
+    //     | | | | | +-------------- Service - 0xFD6F
+    if (params->advertisingData[0] == 0x02 &&
+        params->advertisingData[1] == 0x01 &&
+        params->advertisingData[2] == 0x1a &&
+        params->advertisingData[3] == 0x03 &&
+        params->advertisingData[4] == 0x03 &&
+        params->advertisingData[5] == 0x6f &&
+        params->advertisingData[6] == 0xfd
+        ) {
+      int x;
+      int y;
+      x = (counter) % 5;
+      y = (counter) / 5;
+      uBit.display.image.setPixelValue(x, y, 0);
+      counter++;
+      counter = counter % 25;
+      x = counter % 5;
+      y = counter / 5;
+      char id[33];
+      int8_t rssi = params->rssi;
+      uBit.display.image.setPixelValue(x, y, (uint8_t)rssi);
+      BLEProtocol::AddressBytes_t peer;
+      memcpy(peer, params->peerAddr, BLEProtocol::ADDR_LEN);
+
+      for (int i = 0; i < 16; i++)
+      {
+        sprintf(&id[i * 2], "%02X", params->advertisingData[i + 11]);
+      }
+      uBit.serial.printf("id=%s - %i (%02x:%02x:%02x:%02x:%02x:%02x)\r\n", 
+          id, (uint8_t)rssi, peer[5], peer[4], peer[3], peer[2], peer[1], peer[0]);
+    }
+  }
+}
+
+int main() 
+{
+  counter = 0;
+  uBit.display.setDisplayMode(DISPLAY_MODE_GREYSCALE);
+  scheduler_init(uBit.messageBus);
+  uBit.serial.printf("Scanner.....\r\n");
+
+  uBit.ble = new BLEDevice();
+  uBit.ble->init();
+  uBit.ble->gap().setScanParams(500, 400);
+  uBit.ble->gap().startScan(advertisementCallback);
+
+  while (true) {
+    uBit.ble->waitForEvent();
+  }
+  return 0;
+}
+

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