def main():
# io_callbacks must be called before `ble.config` to enable
# Require MITM.
ble.io_callbacks(display_cb=display_cb,
request_cb=request_cb,
confirm_cb=confirm_cb)
ble.config(security=ble.PAIRING_REQUIRE_MITM)
# Comment the line above, and uncomment the line below to use
# bonding. Once bonded the pairing activity will no longer be
# necessary on each connection as long as the keys are retained by
# the devices.
# ble.config(security=ble.PAIRING_REQUIRE_MITM | ble.PAIRING_REQUIRE_BONDING)
print("Connecting")
conn = ble.gap_connect(address_type, address)
print("Connected")
# The delay is not necessary, just here to easily observe the
# secured vs unsecured state.
print("Wait for a bit before securing")
time.sleep(5)
print("Securing")
conn.secure(secure_cb)
print("Sleep forever")
while True:
time.sleep(1)
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
from digi import ble
def form_mac_address(addr: bytes) -> str:
return ":".join('{:02x}'.format(b) for b in addr)
# Turn on Bluetooth
ble.active(True)
print("Started Bluetooth with address of: {}".format(form_mac_address(ble.config("mac"))))
scanner = None
try:
# Start a scan to run for 30 seconds
scanner = ble.gap_scan(30000, interval_us=50000, window_us=50000)
# Loop through all advertisements until the scan has stopped.
for adv in scanner:
print(adv)
finally:
if scanner is not None:
scanner.stop()
# Scan with a context manager this time.
with ble.gap_scan(30000, interval_us=50000, window_us=50000) as scanner:
# Loop through the available advertisements, blocking if there are none. Exits when the scan stops.
time.sleep(time_sec)
# stop advertising
ble.gap_advertise(None)
# Calculate the number of advertisements sent
return time_sec * 1000000 // interval_usec
# Advertising constants
TIME_BETWEEN_BEACON_TYPES_SEC = 10
ADVERTISE_INTERVAL_USEC = 50000
# Turn on BLE
ble.active(True)
# Print out the BLE Mac
print("Started Bluetooth with address of: {}".format(
form_mac_address(ble.config("mac"))))
# The Ranging Data is the Tx power in dBm emitted by the beacon at 0 meters.
calibrated_ranging_data = -10 # This will need to be configured to your beacons actual value.
# The Eddystone TLM frame keeps track of the beacon's time alive and advertisement count.
count = 0
start_time = time.ticks_ms()
# A URL to advertise
url = "http://www.digi.com/"
# This is a unique ID given to each beacon, for this example it will be random.
uid = os.urandom(16)
# The TLM frame advertises the beacon's battery voltage if available. It is set to 0 if unavailable.