tests/multi_bluetooth: Add bluetooth multi-test for deepsleep.

Signed-off-by: Andrew Leech <andrew.leech@planetinnovation.com.au>

tests/multi_bluetooth/ble_deepsleep.py

+# Test BLE re-connect after peripheral deepsleep.
+# instance0 needs to be a device capable of deepsleep without disconnecting the
+# REPL, eg. STM32WB55 Nucleo board with REPL on UART port.
+
+from micropython import const
+import time, machine, bluetooth
+
+TIMEOUT_MS = 4000
+
+_IRQ_CENTRAL_CONNECT = const(1)
+_IRQ_CENTRAL_DISCONNECT = const(2)
+_IRQ_PERIPHERAL_CONNECT = const(7)
+_IRQ_PERIPHERAL_DISCONNECT = const(8)
+
+waiting_events = {}
+
+
+def irq(event, data):
+    if event == _IRQ_CENTRAL_CONNECT:
+        print("_IRQ_CENTRAL_CONNECT")
+        waiting_events[event] = data[0]
+    elif event == _IRQ_CENTRAL_DISCONNECT:
+        print("_IRQ_CENTRAL_DISCONNECT")
+    elif event == _IRQ_PERIPHERAL_CONNECT:
+        print("_IRQ_PERIPHERAL_CONNECT")
+        waiting_events[event] = data[0]
+    elif event == _IRQ_PERIPHERAL_DISCONNECT:
+        print("_IRQ_PERIPHERAL_DISCONNECT")
+
+    if event not in waiting_events:
+        waiting_events[event] = None
+
+
+def wait_for_event(event, timeout_ms):
+    t0 = time.ticks_ms()
+    while time.ticks_diff(time.ticks_ms(), t0) < timeout_ms:
+        if event in waiting_events:
+            return waiting_events.pop(event)
+        machine.idle()
+    raise ValueError("Timeout waiting for {}".format(event))
+
+
+# Acting in peripheral role.
+def instance0():
+    multitest.globals(BDADDR=ble.config("mac"))
+    print("gap_advertise")
+    ble.gap_advertise(20_000, b"\x02\x01\x06\x04\tMPY")
+    multitest.next()
+    # Wait for central to connect, then wait for it to disconnect.
+    wait_for_event(_IRQ_CENTRAL_CONNECT, TIMEOUT_MS)
+    wait_for_event(_IRQ_CENTRAL_DISCONNECT, TIMEOUT_MS)
+
+    multitest.expect_reboot(resume="instance0_resume", delay_ms=100)
+    machine.deepsleep(100)
+
+
+# Acting in peripheral role.
+def instance0_resume():
+    # continue here after reboot
+    print("restarted")
+    print("gap_advertise")
+    ble.gap_advertise(20_000, b"\x02\x01\x06\x04\tMPY")
+    try:
+        # Wait for central to connect, then disconnect it.
+        conn_handle = wait_for_event(_IRQ_CENTRAL_CONNECT, TIMEOUT_MS)
+        print("gap_disconnect:", ble.gap_disconnect(conn_handle))
+        wait_for_event(_IRQ_CENTRAL_DISCONNECT, TIMEOUT_MS)
+    finally:
+        ble.active(0)
+
+
+# Acting in central role.
+def instance1():
+    multitest.next()
+    try:
+        # Connect to peripheral and then disconnect.
+        print("gap_connect")
+        ble.gap_connect(*BDADDR)
+        conn_handle = wait_for_event(_IRQ_PERIPHERAL_CONNECT, TIMEOUT_MS)
+        print("gap_disconnect:", ble.gap_disconnect(conn_handle))
+        wait_for_event(_IRQ_PERIPHERAL_DISCONNECT, TIMEOUT_MS)
+
+        # Connect to peripheral and then let the peripheral disconnect us.
+        # Extra scan timeout allows for the peripheral to receive the disconnect
+        # event and start advertising again.
+        print("gap_connect")
+        ble.gap_connect(BDADDR[0], BDADDR[1], 5000)
+        wait_for_event(_IRQ_PERIPHERAL_CONNECT, TIMEOUT_MS)
+        wait_for_event(_IRQ_PERIPHERAL_DISCONNECT, TIMEOUT_MS)
+    finally:
+        ble.active(0)
+
+
+ble = bluetooth.BLE()
+ble.active(1)
+ble.irq(irq)

tests/multi_bluetooth/ble_deepsleep.py.exp

+--- instance0 ---
+gap_advertise
+_IRQ_CENTRAL_CONNECT
+_IRQ_CENTRAL_DISCONNECT
+WAIT_FOR_REBOOT instance0_resume 100
+restarted
+gap_advertise
+_IRQ_CENTRAL_CONNECT
+gap_disconnect: True
+_IRQ_CENTRAL_DISCONNECT
+--- instance1 ---
+gap_connect
+_IRQ_PERIPHERAL_CONNECT
+gap_disconnect: True
+_IRQ_PERIPHERAL_DISCONNECT
+gap_connect
+_IRQ_PERIPHERAL_CONNECT
+_IRQ_PERIPHERAL_DISCONNECT