1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
# Test GATTC/S data transfer between peripheral and central, and use of gatts_set_buffer()
from micropython import const
import time, machine, bluetooth
TIMEOUT_MS = 5000
_IRQ_CENTRAL_CONNECT = const(1 << 0)
_IRQ_CENTRAL_DISCONNECT = const(1 << 1)
_IRQ_GATTS_WRITE = const(1 << 2)
_IRQ_PERIPHERAL_CONNECT = const(1 << 6)
_IRQ_PERIPHERAL_DISCONNECT = const(1 << 7)
_IRQ_GATTC_SERVICE_RESULT = const(1 << 8)
_IRQ_GATTC_CHARACTERISTIC_RESULT = const(1 << 9)
_IRQ_GATTC_READ_RESULT = const(1 << 11)
_IRQ_GATTC_WRITE_STATUS = const(1 << 12)
_IRQ_GATTC_NOTIFY = const(1 << 13)
SERVICE_UUID = bluetooth.UUID("00000001-1111-2222-3333-444444444444")
CHAR_CTRL_UUID = bluetooth.UUID("00000002-1111-2222-3333-444444444444")
CHAR_RX_UUID = bluetooth.UUID("00000003-1111-2222-3333-444444444444")
CHAR_TX_UUID = bluetooth.UUID("00000004-1111-2222-3333-444444444444")
CHAR_CTRL = (CHAR_CTRL_UUID, bluetooth.FLAG_WRITE | bluetooth.FLAG_NOTIFY)
CHAR_RX = (CHAR_RX_UUID, bluetooth.FLAG_WRITE | bluetooth.FLAG_WRITE_NO_RESPONSE)
CHAR_TX = (CHAR_TX_UUID, bluetooth.FLAG_NOTIFY)
SERVICE = (SERVICE_UUID, (CHAR_CTRL, CHAR_RX, CHAR_TX))
SERVICES = (SERVICE,)
last_event = None
last_data = None
ctrl_value_handle = 0
rx_value_handle = 0
tx_value_handle = 0
def irq(event, data):
global last_event, last_data, ctrl_value_handle, rx_value_handle, tx_value_handle
last_event = event
last_data = data
if event == _IRQ_CENTRAL_CONNECT:
print("_IRQ_CENTRAL_CONNECT")
elif event == _IRQ_CENTRAL_DISCONNECT:
print("_IRQ_CENTRAL_DISCONNECT")
elif event == _IRQ_GATTS_WRITE:
print("_IRQ_GATTS_WRITE")
elif event == _IRQ_PERIPHERAL_CONNECT:
print("_IRQ_PERIPHERAL_CONNECT")
elif event == _IRQ_PERIPHERAL_DISCONNECT:
print("_IRQ_PERIPHERAL_DISCONNECT")
elif event == _IRQ_GATTC_CHARACTERISTIC_RESULT:
if data[-1] == CHAR_CTRL_UUID:
print("_IRQ_GATTC_SERVICE_RESULT", data[-1])
ctrl_value_handle = data[2]
elif data[-1] == CHAR_RX_UUID:
print("_IRQ_GATTC_SERVICE_RESULT", data[-1])
rx_value_handle = data[2]
elif data[-1] == CHAR_TX_UUID:
print("_IRQ_GATTC_SERVICE_RESULT", data[-1])
tx_value_handle = data[2]
elif event == _IRQ_GATTC_READ_RESULT:
print("_IRQ_GATTC_READ_RESULT", data[-1])
elif event == _IRQ_GATTC_WRITE_STATUS:
print("_IRQ_GATTC_WRITE_STATUS", data[-1])
elif event == _IRQ_GATTC_NOTIFY:
print("_IRQ_GATTC_NOTIFY", data[-1])
def wait_for_event(event, timeout_ms):
t0 = time.ticks_ms()
while time.ticks_diff(time.ticks_ms(), t0) < timeout_ms:
if isinstance(event, int):
if last_event == event:
break
elif event():
break
machine.idle()
# Acting in peripheral role.
def instance0():
multitest.globals(BDADDR=ble.config("mac"))
((char_ctrl_handle, char_rx_handle, char_tx_handle),) = ble.gatts_register_services(SERVICES)
# Increase the size of the rx buffer and enable append mode.
ble.gatts_set_buffer(char_rx_handle, 100, True)
print("gap_advertise")
ble.gap_advertise(20_000, b"\x02\x01\x06\x04\xffMPY")
multitest.next()
try:
# Wait for central to connect to us.
wait_for_event(_IRQ_CENTRAL_CONNECT, TIMEOUT_MS)
if last_event != _IRQ_CENTRAL_CONNECT:
return
conn_handle, _, _ = last_data
# Wait for the central to signal that it's done with its part of the test.
wait_for_event(
lambda: last_event == _IRQ_GATTS_WRITE and last_data[1] == char_ctrl_handle,
2 * TIMEOUT_MS,
)
# Read all accumulated data from the central.
print("gatts_read:", ble.gatts_read(char_rx_handle))
# Notify the central a few times.
for i in range(4):
time.sleep_ms(300)
ble.gatts_notify(conn_handle, char_tx_handle, "message{}".format(i))
# Notify the central that we are done with our part of the test.
time.sleep_ms(300)
ble.gatts_notify(conn_handle, char_ctrl_handle, "OK")
# Wait for the central to disconnect.
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(0, BDADDR)
wait_for_event(_IRQ_PERIPHERAL_CONNECT, TIMEOUT_MS)
if last_event != _IRQ_PERIPHERAL_CONNECT:
return
conn_handle, _, _ = last_data
# Discover characteristics.
ble.gattc_discover_characteristics(conn_handle, 1, 65535)
wait_for_event(
lambda: ctrl_value_handle and rx_value_handle and tx_value_handle, TIMEOUT_MS
)
# Write to the characteristic a few times, with and without response.
for i in range(4):
print("gattc_write")
ble.gattc_write(conn_handle, rx_value_handle, "central{}".format(i), i & 1)
if i & 1:
wait_for_event(_IRQ_GATTC_WRITE_STATUS, TIMEOUT_MS)
time.sleep_ms(400)
# Write to say that we are done with our part of the test.
ble.gattc_write(conn_handle, ctrl_value_handle, "OK", 1)
wait_for_event(_IRQ_GATTC_WRITE_STATUS, TIMEOUT_MS)
# Wait for notification that peripheral is done with its part of the test.
wait_for_event(
lambda: last_event == _IRQ_GATTC_NOTIFY and last_data[1] == ctrl_value_handle,
TIMEOUT_MS,
)
# Disconnect from peripheral.
print("gap_disconnect:", ble.gap_disconnect(conn_handle))
wait_for_event(_IRQ_PERIPHERAL_DISCONNECT, TIMEOUT_MS)
finally:
ble.active(0)
ble = bluetooth.BLE()
ble.active(1)
ble.irq(irq)
|
