Updated documentation

README.md

@@ -2,6 +2,20 @@
 
 This repository contains the firmware source code used by Btlejack to communicate and attack BLE connections with Micro:Bit devices.
 
+Two versions of this firmware can be compiled:
+
+ * a version for the BBC Micro:Bit
+ * a version for BLE400 and Adafruit's Bluefruit LE boards
+
+To compile these two versions:
+
+```
+$ make all
+```
+
+Firmware hex files are then available in the `dist` directory (not versioned). 
+
+
 ## Links
 
 [micro:bit runtime docs](http://lancaster-university.github.io/microbit-docs/) | [microbit-dal](https://github.com/lancaster-university/microbit-dal) |  [uBit](https://github.com/lancaster-university/microbit)
@@ -13,56 +27,6 @@ This repository contains the firmware source code used by Btlejack to communicat
 | ARM mbed online | http://lancaster-university.github.io/microbit-docs/online-toolchains/#mbed |
 | yotta  | http://lancaster-university.github.io/microbit-docs/offline-toolchains/#yotta |
 
-##  microbit-dal Configuration
-
-The DAL also contains a number of compile time options can be modified. A full list and explanation
-can be found in our [documentation](http://lancaster-university.github.io/microbit-docs/advanced/#compile-time-options-with-microbitconfigh).
-
-Alternately, `yotta` can be used to configure the dal regardless of module/folder structure, through providing a
-`config.json` in this directory.
-
-Here is an example of `config.json` with all available options configured:
-```json
-{
-    "microbit-dal":{
-        "bluetooth":{
-            "enabled": 1,
-            "pairing_mode": 1,
-            "private_addressing": 0,
-            "open": 0,
-            "whitelist": 1,
-            "advertising_timeout": 0,
-            "tx_power": 0,
-            "dfu_service": 1,
-            "event_service": 1,
-            "device_info_service": 1
-        },
-        "reuse_sd": 1,
-        "default_pullmode":"PullDown",
-        "gatt_table_size": "0x300",
-        "heap_allocator": 1,
-        "nested_heap_proportion": 0.75,
-        "system_tick_period": 6,
-        "system_components": 10,
-        "idle_components": 6,
-        "use_accel_lsb": 0,
-        "min_display_brightness": 1,
-        "max_display_brightness": 255,
-        "display_scroll_speed": 120,
-        "display_scroll_stride": -1,
-        "display_print_speed": 400,
-        "panic_on_heap_full": 1,
-        "debug": 0,
-        "heap_debug": 0,
-        "stack_size":2048,
-        "sram_base":"0x20000008",
-        "sram_end":"0x20004000",
-        "sd_limit":"0x20002000",
-        "gatt_table_start":"0x20001900"
-    }
-}
-```
-
 ## BBC Community Guidelines
 
 [BBC Community Guidelines](https://www.microbit.co.uk/help#sect_cg)