From 1d9528210b8a29be7e799be37224706633f7a4d5 Mon Sep 17 00:00:00 2001 From: Damien George Date: Wed, 10 Mar 2021 23:32:59 +1100 Subject: [PATCH] tests/multi_bluetooth: Add performance test for gatt char writes. Signed-off-by: Damien George --- tests/multi_bluetooth/perf_gatt_char_write.py | 151 ++++++++++++++++++ .../perf_gatt_char_write.py.exp | 24 +++ 2 files changed, 175 insertions(+) create mode 100644 tests/multi_bluetooth/perf_gatt_char_write.py create mode 100644 tests/multi_bluetooth/perf_gatt_char_write.py.exp diff --git a/tests/multi_bluetooth/perf_gatt_char_write.py b/tests/multi_bluetooth/perf_gatt_char_write.py new file mode 100644 index 0000000000..00607f0090 --- /dev/null +++ b/tests/multi_bluetooth/perf_gatt_char_write.py @@ -0,0 +1,151 @@ +# Write characteristic from central to peripheral and time data rate. + +from micropython import const +import time, machine, bluetooth + +TIMEOUT_MS = 2000 + +_IRQ_CENTRAL_CONNECT = const(1) +_IRQ_CENTRAL_DISCONNECT = const(2) +_IRQ_GATTS_WRITE = const(3) +_IRQ_PERIPHERAL_CONNECT = const(7) +_IRQ_PERIPHERAL_DISCONNECT = const(8) +_IRQ_GATTC_CHARACTERISTIC_RESULT = const(11) +_IRQ_GATTC_CHARACTERISTIC_DONE = const(12) +_IRQ_GATTC_WRITE_DONE = const(17) +_IRQ_MTU_EXCHANGED = const(21) + +# How long to run the test for. +_NUM_NOTIFICATIONS = const(40) +_MTU_SIZE = const(131) +_CHAR_SIZE = const(_MTU_SIZE - 3) + +SERVICE_UUID = bluetooth.UUID("A5A5A5A5-FFFF-9999-1111-5A5A5A5A5A5A") +CHAR_UUID = bluetooth.UUID("00000000-1111-2222-3333-444444444444") +CHAR = (CHAR_UUID, bluetooth.FLAG_WRITE | bluetooth.FLAG_WRITE_NO_RESPONSE) +SERVICE = (SERVICE_UUID, (CHAR,)) +SERVICES = (SERVICE,) + +packet_sequence = 0 +waiting_events = {} + + +def irq(event, data): + if event == _IRQ_CENTRAL_CONNECT: + waiting_events[event] = data[0] + elif event == _IRQ_PERIPHERAL_CONNECT: + waiting_events[event] = data[0] + elif event == _IRQ_GATTS_WRITE: + global packet_sequence + conn_handle, attr_handle = data + data = ble.gatts_read(attr_handle) + if not (data[0] == packet_sequence and data[-1] == (256 - packet_sequence) & 0xFF): + print("_IRQ_GATTS_WRITE data invalid:", packet_sequence, data) + elif packet_sequence % 10 == 0: + print("_IRQ_GATTS_WRITE", packet_sequence) + packet_sequence += 1 + elif event == _IRQ_GATTC_CHARACTERISTIC_RESULT: + # conn_handle, def_handle, value_handle, properties, uuid = data + if data[-1] == CHAR_UUID: + waiting_events[event] = data[2] + else: + return + elif event == _IRQ_MTU_EXCHANGED: + # ATT MTU exchange complete (either initiated by us or the remote device). + conn_handle, mtu = data + print("_IRQ_MTU_EXCHANGED:", mtu) + + 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")) + ((char_handle,),) = ble.gatts_register_services(SERVICES) + ble.gatts_set_buffer(char_handle, _CHAR_SIZE) + print("gap_advertise") + ble.gap_advertise(20_000, b"\x02\x01\x06\x04\xffMPY") + multitest.next() + try: + # Wait for central to connect to us. + conn_handle = wait_for_event(_IRQ_CENTRAL_CONNECT, TIMEOUT_MS) + # Wait for central to disconnect us. + wait_for_event(_IRQ_CENTRAL_DISCONNECT, 30000) + print("final packet_sequence:", packet_sequence) + finally: + ble.active(0) + + +# Acting in central role. +def instance1(): + global packet_sequence + ((char_handle,),) = ble.gatts_register_services(SERVICES) + multitest.next() + try: + # Connect to peripheral and then disconnect. + print("gap_connect") + ble.config(mtu=_MTU_SIZE) + ble.gap_connect(*BDADDR) + conn_handle = wait_for_event(_IRQ_PERIPHERAL_CONNECT, TIMEOUT_MS) + ble.gattc_exchange_mtu(conn_handle) + + # Discover characteristics. + ble.gattc_discover_characteristics(conn_handle, 1, 65535) + value_handle = wait_for_event(_IRQ_GATTC_CHARACTERISTIC_RESULT, TIMEOUT_MS) + wait_for_event(_IRQ_GATTC_CHARACTERISTIC_DONE, TIMEOUT_MS) + + # Send data! + data = bytearray(ord("A") + (i % 64) for i in range(_CHAR_SIZE)) + for mode in (0, 1): + ticks_start = time.ticks_ms() + for i in range(_NUM_NOTIFICATIONS): + data[0] = packet_sequence + data[-1] = 256 - packet_sequence + if packet_sequence % 10 == 0: + print("gattc_write", packet_sequence) + if mode == 0: + while True: + try: + ble.gattc_write(conn_handle, value_handle, data, mode) + break + except OSError: + pass + else: + ble.gattc_write(conn_handle, value_handle, data, mode) + wait_for_event(_IRQ_GATTC_WRITE_DONE, TIMEOUT_MS) + packet_sequence += 1 + + ticks_end = time.ticks_ms() + ticks_total = time.ticks_diff(ticks_end, ticks_start) + + print( + "Did {} writes in {} ms. {} ms/write, {} bytes/sec".format( + _NUM_NOTIFICATIONS, + ticks_total, + ticks_total / _NUM_NOTIFICATIONS, + _NUM_NOTIFICATIONS * len(data) * 1000 // ticks_total, + ) + ) + + time.sleep_ms(100) + + # DIsconnect the peripheral. + print("gap_disconnect:", ble.gap_disconnect(conn_handle)) + wait_for_event(_IRQ_PERIPHERAL_DISCONNECT, 20000) + finally: + ble.active(0) + + +ble = bluetooth.BLE() +ble.active(1) +ble.irq(irq) diff --git a/tests/multi_bluetooth/perf_gatt_char_write.py.exp b/tests/multi_bluetooth/perf_gatt_char_write.py.exp new file mode 100644 index 0000000000..4dda5e04f0 --- /dev/null +++ b/tests/multi_bluetooth/perf_gatt_char_write.py.exp @@ -0,0 +1,24 @@ +--- instance0 --- +gap_advertise +_IRQ_MTU_EXCHANGED: 131 +_IRQ_GATTS_WRITE 0 +_IRQ_GATTS_WRITE 10 +_IRQ_GATTS_WRITE 20 +_IRQ_GATTS_WRITE 30 +_IRQ_GATTS_WRITE 40 +_IRQ_GATTS_WRITE 50 +_IRQ_GATTS_WRITE 60 +_IRQ_GATTS_WRITE 70 +final packet_sequence: 80 +--- instance1 --- +gap_connect +_IRQ_MTU_EXCHANGED: 131 +gattc_write 0 +gattc_write 10 +gattc_write 20 +gattc_write 30 +gattc_write 40 +gattc_write 50 +gattc_write 60 +gattc_write 70 +gap_disconnect: True