Merge pull request #27 from jerryneedell/jerryn_scan

 increase CWLAP timeout, modify simpletest to fix AP Scan

Author: ladyada

adafruit_espatcontrol/adafruit_espatcontrol.py

@@ -450,7 +450,7 @@ def scan_APs(self, retries=3): # pylint: disable=invalid-name
             try:
                 if self.mode != self.MODE_STATION:
                     self.mode = self.MODE_STATION
-                scan = self.at_response("AT+CWLAP", timeout=3).split(b'\r\n')
+                scan = self.at_response("AT+CWLAP", timeout=5).split(b'\r\n')
             except RuntimeError:
                 continue
             routers = []

examples/espatcontrol_simpletest.py

@@ -14,6 +14,7 @@
 # With a Metro or Feather M4
 uart = busio.UART(board.TX, board.RX, timeout=0.1)
 resetpin = DigitalInOut(board.D5)
+rtspin = DigitalInOut(board.D6)
 
 # With a Particle Argon
 """
@@ -28,23 +29,31 @@
 esp_boot.value = True
 """
 
+
 print("ESP AT commands")
-esp = adafruit_espatcontrol.ESP_ATcontrol(uart, 115200, run_baudrate=9600,
-                                          reset_pin=resetpin, debug=False)
+esp = adafruit_espatcontrol.ESP_ATcontrol(uart, 115200,
+                                          reset_pin=resetpin, rts_pin=rtspin, debug=False)
 print("Resetting ESP module")
 esp.hard_reset()
 
+first_pass = True
 while True:
     try:
-        print("Checking connection...")
-        while not esp.is_connected:
-            print("Initializing ESP module")
+        if first_pass :
+            print("Scanning for AP's")
+            for ap in esp.scan_APs():
+                print(ap)
+            print("Checking connection...")
+            # secrets dictionary must contain 'ssid' and 'password' at a minimum
             print("Connecting...")
             esp.connect(secrets)
             print("Connected to AT software version ", esp.version)
+            first_pass = False
         print("Pinging 8.8.8.8...", end="")
         print(esp.ping("8.8.8.8"))
         time.sleep(10)
     except (ValueError,RuntimeError, adafruit_espatcontrol.OKError) as e:
         print("Failed to get data, retrying\n", e)
+        print("Resetting ESP module")
+        esp.hard_reset()
         continue

examples/espatcontrol_webclient.py

@@ -15,11 +15,13 @@
 # With a Metro or Feather M4
 uart = busio.UART(board.TX, board.RX, timeout=0.1)
 resetpin = DigitalInOut(board.D5)
+rtspin = DigitalInOut(board.D6)
 
 # With a Particle Argon
 """
 uart = busio.UART(board.ESP_RX, board.ESP_TX, timeout=0.1)
 resetpin = DigitalInOut(board.ESP_WIFI_EN)
+rtspin = DigitalInOut(board.ESP_CTS)
 esp_boot = DigitalInOut(board.ESP_BOOT_MODE)
 from digitalio import Direction
 esp_boot.direction = Direction.OUTPUT
@@ -29,8 +31,8 @@
 URL = "http://wifitest.adafruit.com/testwifi/index.html"
 print("ESP AT GET URL", URL)
 
-esp = adafruit_espatcontrol.ESP_ATcontrol(uart, 115200, run_baudrate=9600,
-                                          reset_pin=resetpin, debug=False)
+esp = adafruit_espatcontrol.ESP_ATcontrol(uart, 115200,
+                                          reset_pin=resetpin, rts_pin=rtspin, debug=False)
 print("Resetting ESP module")
 esp.hard_reset()