fix ping, prettier example

Author: ladyada

adafruit_esp32spi/adafruit_esp32spi.py

@@ -123,7 +123,7 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods
     TLS_MODE = const(2)
 
     # pylint: disable=too-many-arguments
-    def __init__(self, spi, cs_pin, ready_pin, reset_pin, gpio0_pin, *, debug=False):
+    def __init__(self, spi, cs_pin, ready_pin, reset_pin, gpio0_pin=None, *, debug=False):
         self._debug = debug
         self._buffer = bytearray(10)
         self._pbuf = bytearray(1)  # buffer for param read
@@ -138,22 +138,25 @@ def __init__(self, spi, cs_pin, ready_pin, reset_pin, gpio0_pin, *, debug=False)
         self._cs.direction = Direction.OUTPUT
         self._ready.direction = Direction.INPUT
         self._reset.direction = Direction.OUTPUT
-        self._gpio0.direction = Direction.INPUT
+        if self._gpio0:
+            self._gpio0.direction = Direction.INPUT
         self.reset()
     # pylint: enable=too-many-arguments
 
     def reset(self):
         """Hard reset the ESP32 using the reset pin"""
-        self._gpio0.direction = Direction.OUTPUT
         if self._debug:
             print("Reset ESP32")
-        self._gpio0.value = True  # not bootload mode
+        if self._gpio0:
+            self._gpio0.direction = Direction.OUTPUT
+            self._gpio0.value = True  # not bootload mode
         self._cs.value = True
         self._reset.value = False
         time.sleep(0.01)    # reset
         self._reset.value = True
         time.sleep(0.75)    # wait for it to boot up
-        self._gpio0.direction = Direction.INPUT
+        if self._gpio0:
+            self._gpio0.direction = Direction.INPUT
 
     def _wait_for_ready(self):
         """Wait until the ready pin goes low"""
@@ -338,7 +341,7 @@ def get_scan_networks(self):
         'ssid', 'rssi' and 'encryption' entries, one for each AP found"""
         self._send_command(_SCAN_NETWORKS)
         names = self._wait_response_cmd(_SCAN_NETWORKS)
-        print("SSID names:", names)
+        #print("SSID names:", names)
         APs = []                         # pylint: disable=invalid-name
         for i, name in enumerate(names):
             a_p = {'ssid': name}
@@ -466,7 +469,7 @@ def ping(self, dest, ttl=250):
             dest = self.get_host_by_name(dest)
         # ttl must be between 0 and 255
         ttl = max(0, min(ttl, 255))
-        resp = self._send_command_get_response(_PING_CMD, (dest, (ttl)))
+        resp = self._send_command_get_response(_PING_CMD, (dest, (ttl,)))
         return struct.unpack('<H', resp[0])[0]
 
     def get_socket(self):

examples/esp32spi_simpletest.py

@@ -10,36 +10,47 @@
 TEXT_URL = "http://wifitest.adafruit.com/testwifi/index.html"
 JSON_URL = "http://api.coindesk.com/v1/bpi/currentprice/USD.json"
 
-esp32_cs = DigitalInOut(board.ESP_CS)
-esp32_ready = DigitalInOut(board.ESP_BUSY)
-esp32_gpio0 = DigitalInOut(board.ESP_GPIO0)
-esp32_reset = DigitalInOut(board.ESP_RESET)
+#esp32_cs = DigitalInOut(board.ESP_CS)
+#esp32_ready = DigitalInOut(board.ESP_BUSY)
+#esp32_reset = DigitalInOut(board.ESP_RESET)
+
+import microcontroller
+esp32_cs = DigitalInOut(microcontroller.pin.PB14)
+esp32_ready = DigitalInOut(microcontroller.pin.PB16)
+esp32_reset = DigitalInOut(microcontroller.pin.PB17)
+
 spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
-esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset, esp32_gpio0)
+esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset)
 
 requests.set_interface(esp)
 
 if esp.status == adafruit_esp32spi.WL_IDLE_STATUS:
     print("ESP32 found and in idle mode")
 print("Firmware vers.", esp.firmware_version)
 print("MAC addr:", [hex(i) for i in esp.MAC_address])
-print("APs: ", esp.scan_networks())
+for ap in esp.scan_networks():
+    print("\t%s\t\tRSSI: %d" % (str(ap['ssid'], 'utf-8'), ap['rssi']))
 print("Connecting to AP...")
 esp.connect_AP(b'adafruit', b'ffffffff')
-print("Connected to", esp.ssid, "RSSI", esp.rssi)
+print("Connected to", str(esp.ssid, 'utf-8'), "\tRSSI:", esp.rssi)
 print("My IP address is", esp.pretty_ip(esp.ip_address))
 print("IP lookup adafruit.com: %s" % esp.pretty_ip(esp.get_host_by_name("adafruit.com")))
 print("Ping google.com: %d ms" % esp.ping("google.com"))
 
 #esp._debug = True
 print("Fetching text from", TEXT_URL)
 r = requests.get(TEXT_URL)
+print('-'*40)
 print(r.text)
+print('-'*40)
 r.close()
 
+print()
 print("Fetching json from", JSON_URL)
 r = requests.get(JSON_URL)
+print('-'*40)
 print(r.json())
+print('-'*40)
 r.close()
 
 print("Done!")