Tici hardware abstraction layer (#2183)

* rename android hardware

* add tici class

* elif

* read correct serial number

* Update release files

* Get IMEI

* Refactor AT command

* move get_cmdline into base class

* Remove unused import

* Small cleanup
old-commit-hash: c90cb1b529

common/hardware.py

@@ -3,7 +3,8 @@ import random
 from typing import cast
 
 from cereal import log
-from common.android import Android
+from common.hardware_android import Android
+from common.hardware_tici import Tici
 from common.hardware_base import HardwareBase
 
 EON = os.path.isfile('/EON')
@@ -50,5 +51,7 @@ class Pc(HardwareBase):
 
 if EON:
   HARDWARE = cast(HardwareBase, Android())
+elif TICI:
+  HARDWARE = cast(HardwareBase, Tici())
 else:
   HARDWARE = cast(HardwareBase, Pc())

common/hardware_base.py

@@ -1,6 +1,13 @@
 from abc import abstractmethod
 
+
 class HardwareBase:
+  @staticmethod
+  def get_cmdline():
+    with open('/proc/cmdline') as f:
+      cmdline = f.read()
+    return {kv[0]: kv[1] for kv in [s.split('=') for s in cmdline.split(' ')] if len(kv) == 2}
+
   @abstractmethod
   def get_sound_card_online(self):
     pass

common/hardware_tici.py

@@ -0,0 +1,58 @@
+import serial
+
+from common.hardware_base import HardwareBase
+from cereal import log
+
+
+NetworkType = log.ThermalData.NetworkType
+NetworkStrength = log.ThermalData.NetworkStrength
+
+
+def run_at_command(cmd, timeout=0.1):
+  with serial.Serial("/dev/ttyUSB2", timeout=timeout) as ser:
+    ser.write(cmd + b"\r\n")
+    ser.readline()  # Modem echos request
+    return ser.readline().decode().rstrip()
+
+
+class Tici(HardwareBase):
+  def get_sound_card_online(self):
+    return True
+
+  def get_imei(self, slot):
+    if slot != 0:
+      return ""
+
+    for _ in range(10):
+      try:
+        imei = run_at_command(b"AT+CGSN")
+        if len(imei) == 15:
+          return imei
+      except serial.SerialException:
+        pass
+
+    raise RuntimeError("Error getting IMEI")
+
+  def get_serial(self):
+    return self.get_cmdline()['androidboot.serialno']
+
+  def get_subscriber_info(self):
+    return ""
+
+  def reboot(self, reason=None):
+    print("REBOOT!")
+
+  def get_network_type(self):
+    return NetworkType.wifi
+
+  def get_sim_info(self):
+    return {
+      'sim_id': '',
+      'mcc_mnc': None,
+      'network_type': ["Unknown"],
+      'sim_state': ["ABSENT"],
+      'data_connected': False
+    }
+
+  def get_network_strength(self, network_type):
+    return NetworkStrength.unknown

release/files_common

@@ -17,8 +17,9 @@ apk/ai.comma*.apk
 
 common/.gitignore
 common/__init__.py
-common/android.py
 common/hardware.py
+common/hardware_android.py
+common/hardware_tici.py
 common/hardware_base.py
 common/gpio.py
 common/realtime.py