configurable delay

si7021d

@@ -9,11 +9,12 @@ import logging
 logger = logging.getLogger(__name__)
 bus = None
 lock = asyncio.Lock()
+delay = 0.01
 
 
 async def si7021_read():
     async with lock:
-        await asyncio.sleep(0.01)
+        await asyncio.sleep(delay)
 
         # these are still blocking... meh
         raw = bus.read_i2c_block_data(0x40, 0xE3, 2)
@@ -61,8 +62,12 @@ if __name__ == '__main__':
     parser.add_argument('--port', type=int, default=8306)
     parser.add_argument('--bus', type=int, default=0,
                         help='Bus number (X for /dev/i2c-X)')
+    parser.add_argument('--delay', type=float, default=delay,
+                        help='Delay before reading')
 
     args = parser.parse_args()
+
+    delay = args.delay
     logging.basicConfig(level=logging.INFO)
 
     bus = smbus.SMBus(args.bus)