Fix bt examples

CMakeLists.txt

@@ -95,3 +95,4 @@ add_subdirectory(usb)
 add_subdirectory(watchdog)
 add_subdirectory(sha)
 add_subdirectory(freertos)
+add_subdirectory(bluetooth)

README.md

@@ -195,6 +195,7 @@ These networking examples are only available if Wi-Fi is supported by the board.
 App|Description
 ---|---
 [picow_access_point](pico_w/wifi/access_point) | Starts a WiFi access point, and fields DHCP requests.
+[picow_access_point_wifi_provisioning](pico_w/wifi/access_point_wifi_provisioning) | Starts a WiFi access point, and allows WiFi credentials to be provisioned through a web page.
 [picow_blink](pico_w/wifi/blink) | Blinks the on-board LED (which is connected via the WiFi chip).
 [picow_blink_slow_clock](pico_w/wifi/blink) | Blinks the on-board LED (which is connected via the WiFi chip) with a slower system clock to show how to reconfigure communication with the WiFi chip at run time under those circumstances.
 [picow_blink_fast_clock](pico_w/wifi/blink) | Blinks the on-board LED (which is connected via the WiFi chip) with a faster system clock to show how to reconfigure communication with the WiFi chip at build time under those circumstances.
@@ -295,9 +296,13 @@ Some standalone Bluetooth examples (without all the common example build infrast
 
 App|Description
 ---|---
-[picow_ble_temp_sensor](pico_w/bt/standalone) | Reads from the on board temperature sensor and sends notifications via BLE.
-[picow_ble_temp_sensor_with_wifi](pico_w/bt/standalone) | Same as above but also connects to Wi-Fi and starts an "iperf" server.
-[picow_ble_temp_reader](pico_w/bt/standalone) | Connects to one of the above "sensors" and reads the temperature.
+[ble_pointer](bluetooth/ble_pointer) | Bluetooth HID mouse using mpu6050 to detect angle and move cursor.
+[doorbell](bluetooth/doorbell) | Detects button press on transmitter Pico and illuminates LED on reciever Pico.
+[temp_server](bluetooth/temp_sensor) | Reads from the on board temperature sensor and sends notifications via BLE.
+[temp_client](bluetooth/temp_sensor) | Connects to the above temp_server and reads the temperature.
+[secure_temp_server](bluetooth/secure_temp_sensor) | Variant of temp_server which allows exploration of LE_secure configurations.
+[secure_temp_client](bluetooth/secure_temp_sensor) | Connects to the above secure_temp_server and reads the temperature.
+[wifi_provisioner](bluetooth/wifi_provisioner) | Allows WiFi credentials to be provisioned over BLE, either using a mobile app or with the included python script.
 
 ### PIO
 

bluetooth/CMakeLists.txt

@@ -0,0 +1,27 @@
+if (NOT PICO_CYW43_SUPPORTED)
+    return()
+endif()
+if (DEFINED ENV{PICO_BTSTACK_PATH} AND (NOT PICO_BTSTACK_PATH))
+    set(PICO_BTSTACK_PATH $ENV{PICO_BTSTACK_PATH})
+    message("Using PICO_BTSTACK_PATH from environment ('${PICO_BTSTACK_PATH}')")
+endif ()
+set(BTSTACK_TEST_PATH "src/bluetooth.h")
+if (NOT PICO_BTSTACK_PATH)
+    set(PICO_BTSTACK_PATH ${PICO_SDK_PATH}/lib/btstack)
+    if (PICO_CYW43_SUPPORTED AND NOT EXISTS ${PICO_BTSTACK_PATH}/${BTSTACK_TEST_PATH})
+        message(WARNING "btstack submodule has not been initialized; Pico Bluetooth support will be unavailable.
+            hint: try 'git submodule update --init' from your SDK directory (${PICO_SDK_PATH}).")
+    endif()
+elseif (NOT EXISTS ${PICO_BTSTACK_PATH}/${BTSTACK_TEST_PATH})
+    message(WARNING "PICO_BTSTACK_PATH specified but content not present.")
+endif()
+if (NOT TARGET pico_btstack_base)
+    message("Skipping Pico Bluetooth examples as support is not available")
+else()
+    add_subdirectory(btstack_examples)
+    add_subdirectory(secure_temp_sensor)
+    add_subdirectory(doorbell)
+    add_subdirectory(wifi_provisioner)
+    add_subdirectory(ble_pointer)
+    add_subdirectory(temp_sensor)
+endif()

pico_w/bt/README.md → bluetooth/README.md

@@ -6,11 +6,7 @@ There's a standalone example in `pico-examples/pico_w/bt/standalone`.
 ## Debugging
 
 To debug Bluetooth issues you can enable [btstack](https://github.com/bluekitchen/btstack) debug output which also enables packet logging.
-Define `WANT_HCI_DUMP=1` in your CMakeLists.txt file. Uncomment this line to enable debug in the btstack examples.
-
-	target_compile_definitions(picow_bt_example_common INTERFACE
-	    #WANT_HCI_DUMP=1 # This enables btstack debug
-	    )
+Define `WANT_HCI_DUMP=1` in your CMakeLists.txt file.
 
 ## Packet logging
 

bluetooth/ble_pointer/CMakeLists.txt

@@ -0,0 +1,33 @@
+# Add mpu6050 libary
+add_library(mpu6050_i2c_lib INTERFACE)
+target_sources(mpu6050_i2c_lib INTERFACE
+    ${CMAKE_CURRENT_LIST_DIR}/mpu6050_i2c_lib.c
+)
+target_include_directories(mpu6050_i2c_lib INTERFACE
+    ${CMAKE_CURRENT_LIST_DIR}
+)
+target_link_libraries(mpu6050_i2c_lib INTERFACE
+    pico_stdlib
+    hardware_i2c
+)
+
+add_executable(ble_pointer 
+    ble_pointer.c
+)
+target_link_libraries(ble_pointer
+    pico_stdlib
+    pico_btstack_ble
+    pico_btstack_cyw43
+    pico_cyw43_arch_none
+    mpu6050_i2c_lib
+)
+target_include_directories(ble_pointer PRIVATE
+    ${CMAKE_CURRENT_LIST_DIR}
+    ${CMAKE_CURRENT_LIST_DIR}/..
+)
+target_compile_definitions(ble_pointer PRIVATE
+    #WANT_HCI_DUMP=1
+)
+pico_btstack_make_gatt_header(ble_pointer PRIVATE "${CMAKE_CURRENT_LIST_DIR}/ble_pointer.gatt")
+pico_add_extra_outputs(ble_pointer)
+

bluetooth/ble_pointer/README.md

@@ -0,0 +1,7 @@
+### BLE pointer
+
+This example is based on BTstack's 'hog_mouse_demo' and demonstrates a Bluetooth HID mouse. Cursor position is controlled by mpu6050 angle measurements, allowing you to point at the screen and move the mouse cursor. 
+
+To use this example connect a mpu6050 (which can be found at https://thepihut.com/products/6-dof-sensor-mpu6050) to the pico, with SDA connected to pin 4 and SCL connected to pin 5. Also, connect 2 buttons to pins 15 and 16 and ground for left and right click.
+
+Once powered, you should be able to pair your computer with 'HID Mouse' and use the pointer.