more Python 3 fixes, attempting to fix jenkins wifi regresison test (#295)

* more Python 3 fixes, attempting to fix jenkins wifi regresison test. Not successful, but closer.

Jenkinsfile

@@ -46,6 +46,21 @@ pipeline {
         }
       }
     }
+/*
+    stage('Test Dev Build (WIFI)') {
+      steps {
+        lock(resource: "Pandas", inversePrecedence: true, quantity: 1){
+          timeout(time: 60, unit: 'MINUTES') {
+            script {
+              sh "docker run --name ${env.DOCKER_NAME} --privileged --volume /dev/bus/usb:/dev/bus/usb --volume /var/run/dbus:/var/run/dbus --net host ${env.DOCKER_IMAGE_TAG} bash -c 'cd /tmp/panda; ./run_automated_tests.sh'"
+              sh "docker cp ${env.DOCKER_NAME}:/tmp/panda/nosetests.xml test_results_dev.xml"
+              sh "docker rm ${env.DOCKER_NAME}"
+            }
+          }
+        }
+      }
+    }
+*/
   }
   post {
     failure {

UPDATING.md

@@ -1,9 +1,9 @@
 # Updating your panda
 
-Panda should update automatically via the [Chffr](http://chffr.comma.ai/) app ([apple](https://itunes.apple.com/us/app/chffr-dash-cam-that-remembers/id1146683979) and [android](https://play.google.com/store/apps/details?id=ai.comma.chffr))
+Panda should update automatically via the [openpilot](http://openpilot.comma.ai/).
 
-If it doesn't however,  you can use the following commands on linux or Mac OSX
+On Linux or Mac OSX, you can manually update it using:
- `sudo pip install --upgrade pandacan`
+```
-` PYTHONPATH="" sudo python -c "import panda; panda.flash_release()"`
+sudo pip install --upgrade pandacan`
-
+PYTHONPATH="" sudo python -c "import panda; panda.flash_release()"`
-(You'll need to have `pip` and `sudo` installed.)
+```

examples/query_vin_and_stats.py

@@ -1,6 +1,7 @@
 #!/usr/bin/env python3
 import time
 import struct
+import binascii
 from panda import Panda
 from hexdump import hexdump
 from panda.python.isotp import isotp_send, isotp_recv
@@ -8,9 +9,10 @@ from panda.python.isotp import isotp_send, isotp_recv
 # 0x7e0 = Toyota
 # 0x18DB33F1 for Honda?
 
+
 def get_current_data_for_pid(pid):
   # 01 xx = Show current data
-  isotp_send(panda, "\x01"+chr(pid), 0x7e0)
+  isotp_send(panda, b"\x01"+ (chr(pid)).encode("utf8"), 0x7e0)
   return isotp_recv(panda, 0x7e8)
 
 def get_supported_pids():
@@ -33,15 +35,15 @@ if __name__ == "__main__":
   panda.can_clear(0)
 
   # 09 02 = Get VIN
-  isotp_send(panda, "\x09\x02", 0x7df)
+  isotp_send(panda, b"\x09\x02", 0x7df)
   ret = isotp_recv(panda, 0x7e8)
   hexdump(ret)
-  print("VIN: %s" % ret[2:])
+  print("VIN: %s" % "".join(map(chr, ret[:2])))
 
   # 03 = get DTCS
-  isotp_send(panda, "\x03", 0x7e0)
+  isotp_send(panda, b"\x03", 0x7e0)
   dtcs = isotp_recv(panda, 0x7e8)
-  print("DTCs:", dtcs[2:].encode("hex"))
+  print("DTCs:", "".join(map(chr, dtcs[:2])))
 
   supported_pids = get_supported_pids()
   print("Supported PIDs:",supported_pids)

examples/tesla_tester.py

@@ -29,11 +29,11 @@ def tesla_tester():
 
   # BDY 0x248 is the MCU_commands message, which includes folding mirrors, opening the trunk, frunk, setting the cars lock state and more. For our test, we will edit the 3rd byte, which is MCU_lockRequest. 0x01 will lock, 0x02 will unlock:
   print("Unlocking Tesla...")
-  p.can_send(0x248, "\x00\x00\x02\x00\x00\x00\x00\x00", body_bus_num)
+  p.can_send(0x248, b"\x00\x00\x02\x00\x00\x00\x00\x00", body_bus_num)
 
   #Or, we can set the first byte, MCU_frontHoodCommand + MCU_liftgateSwitch, to 0x01 to pop the frunk, or 0x04 to open/close the trunk (0x05 should open both)
   print("Opening Frunk...")
-  p.can_send(0x248, "\x01\x00\x00\x00\x00\x00\x00\x00", body_bus_num)
+  p.can_send(0x248, b"\x01\x00\x00\x00\x00\x00\x00\x00", body_bus_num)
 
   #Back to safety...
   print("Disabling output on Panda...")

python/__init__.py

@@ -387,7 +387,7 @@ class Panda(object):
     dat = self._handle.controlRead(Panda.REQUEST_IN, 0xd0, 0, 0, 0x20)
     hashsig, calc_hash = dat[0x1c:], hashlib.sha1(dat[0:0x1c]).digest()[0:4]
     assert(hashsig == calc_hash)
-    return [dat[0:0x10], dat[0x10:0x10+10]]
+    return [dat[0:0x10].decode("utf8"), dat[0x10:0x10+10].decode("utf8")]
 
   def get_secret(self):
     return self._handle.controlRead(Panda.REQUEST_IN, 0xd0, 1, 0, 0x10)

python/isotp.py

@@ -6,7 +6,7 @@ def msg(x):
   if DEBUG:
     print("S:", binascii.hexlify(x))
   if len(x) <= 7:
-    ret = chr(len(x)) + x
+    ret = chr(len(x)).encode("utf8") + x
   else:
     assert False
   return ret.ljust(8, b"\x00")
@@ -68,7 +68,7 @@ def isotp_send(panda, x, addr, bus=0, recvaddr=None, subaddr=None):
   if len(x) <= 7 and subaddr is None:
     panda.can_send(addr, msg(x), bus)
   elif len(x) <= 6 and subaddr is not None:
-    panda.can_send(addr, chr(subaddr)+msg(x)[0:7], bus)
+    panda.can_send(addr, chr(subaddr).encode("utf8") + msg(x)[0:7], bus)
   else:
     if subaddr:
       ss = (chr(subaddr) + chr(0x10 + (len(x)>>8)) + chr(len(x)&0xFF)).encode("utf8") + x[0:5]
@@ -122,7 +122,7 @@ def isotp_recv(panda, addr, bus=0, sendaddr=None, subaddr=None):
         assert mm[0] == (0x20 | (idx&0xF))
         dat += mm[1:]
         idx += 1
-    elif msg[0]&0xf0 == 0x00:
+    elif msg[0] & 0xf0 == 0x00:
       # single
       tlen = msg[0] & 0xf
       dat = msg[1:]

tests/automated/helpers.py

@@ -50,7 +50,7 @@ def connect_wifi(serial=None):
 
 FNULL = open(os.devnull, 'w')
 def _connect_wifi(dongle_id, pw, insecure_okay=False):
-  ssid = "panda-" + dongle_id.decode("utf8")
+  ssid = "panda-" + dongle_id
 
   r = subprocess.call(["ping", "-W", "4", "-c", "1", "192.168.0.10"], stdout=FNULL, stderr=subprocess.STDOUT)
   if not r:
@@ -69,7 +69,7 @@ def _connect_wifi(dongle_id, pw, insecure_okay=False):
     if sys.platform == "darwin":
       os.system("networksetup -setairportnetwork en0 %s %s" % (ssid, pw))
     else:
-      wlan_interface = subprocess.check_output(["sh", "-c", "iw dev | awk '/Interface/ {print $2}'"]).strip()
+      wlan_interface = subprocess.check_output(["sh", "-c", "iw dev | awk '/Interface/ {print $2}'"]).strip().decode('utf8')
       cnt = 0
       MAX_TRIES = 10
       while cnt < MAX_TRIES:
@@ -87,13 +87,13 @@ def _connect_wifi(dongle_id, pw, insecure_okay=False):
       if "-pair" in wifi_scan[0]:
         os.system("nmcli d wifi connect %s-pair" % (ssid))
         connect_cnt = 0
-        MAX_TRIES = 20
+        MAX_TRIES = 100
         while connect_cnt < MAX_TRIES:
           connect_cnt += 1
           r = subprocess.call(["ping", "-W", "4", "-c", "1", "192.168.0.10"], stdout=FNULL, stderr=subprocess.STDOUT)
           if r:
             print("Waiting for panda to ping...")
-            time.sleep(0.1)
+            time.sleep(0.5)
           else:
             break
         if insecure_okay: