can restart modemPool and detected disabled sim card

card_pool.py

@@ -0,0 +1,51 @@
+import logging
+
+import serial
+
+PORT = "/dev/tty.usbmodem11301"
+
+BAUDRATE = 115200
+
+
+class CardPool:
+
+    def __init__(self, port):
+        self.logger = logging.getLogger("CardPool")
+        self._serial = serial.Serial(port, BAUDRATE, timeout=1)
+
+    def _send_command(self, cmd: str) -> bytes:
+        print("send command {}".format(cmd))
+        self._serial.write(cmd.encode())
+        msg = self._serial.read(100)
+        self.logger.info(msg)
+        return msg
+
+    # info: after reset, we need to restart modem pool
+    def reset(self):
+        self._send_command("AT+NEXT00\r")
+
+    def switch_to_next(self):
+        self._send_command("AT+NEXT11\r")
+
+    def switch_to_slot(self, slot_number: int):
+        if slot_number < 10:
+            self._send_command("AT+SWIT00-000{}\r".format(slot_number))
+        else:
+            self._send_command("AT+SWIT00-0{}\r".format(slot_number))
+
+    # not work for the pool
+    def find_current_slot(self):
+        self._send_command("AT+USIM\r")
+
+
+if __name__ == '__main__':
+    card_pool = CardPool(PORT)
+    # print(card_pool.find_current_slot())
+    card_pool.reset()
+    # card_pool.switch_to_next()
+    # reset modem pool
+    # for port in get_devices_ports():
+    #     ser = serial.Serial(port, BAUDRATE, timeout=1)
+    #     send_command("AT+RESET\r", ser)
+    #     ser.close()
+    # card_pool.switch_to_slot(12)