Function send_recv

testing/test_usb.py:38–45

(data, label="")

    return responses

def send_recv(data, label=""):
    send(data)
    r = recv()
    if r:
        print(f"  {label:25s} -> {r[:12].hex(' ')}")
    else:
        print(f"  {label:25s} -> TIMEOUT")
    return r

def f32_val(resp, offset=7):
    return struct.unpack('<f', resp[offset:offset+4])[0]