Initial basic ground station [DRAFT]

ground_station/main.py

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+
+# Import Python System Libraries
+import time
+import busio
+from digitalio import DigitalInOut, Direction, Pull
+import board
+import adafruit_ssd1306
+import pycubed_rfm9x as adafruit_rfm9x
+
+#RxEN and TxEN
+RxEN = DigitalInOut(board.D22)
+RxEN.direction = Direction.OUTPUT
+RxEN.value = True
+
+TxEN = DigitalInOut(board.D27)
+TxEN.direction = Direction.OUTPUT
+TxEN.value = False
+
+# Create the I2C interface.
+i2c = busio.I2C(board.SCL, board.SDA)
+
+# 128x32 OLED Display
+reset_pin = DigitalInOut(board.D4)
+display = adafruit_ssd1306.SSD1306_I2C(128, 32, i2c, reset=reset_pin)
+# Clear the display.
+display.fill(0)
+display.show()
+width = display.width
+height = display.height
+
+# Configure LoRa Radio
+CS = DigitalInOut(board.CE1)
+RESET = DigitalInOut(board.D25)
+spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
+rfm9x = adafruit_rfm9x.RFM9x(spi, CS, RESET, 401.0)
+rfm9x.tx_power = 23
+prev_packet = None
+rfm9x.node = 0xBA
+rfm9x.destination = 0xAB
+
+#mode = False for Rx and True for Tx
+def SwitchPins(mode):
+    if(not mode):
+        RxEN.value = True
+        TxEN.value = False
+    else:
+        RxEN.value = False
+        TxEN.value = True
+
+while True:
+    SwitchPins(False)
+    packet = None
+    # draw a box to clear the image
+    display.fill(0)
+    display.text('RasPi LoRa', 35, 0, 1)
+
+    # check for packet rx
+    packet = rfm9x.receive(with_ack = True)
+    print(packet)
+    if packet is None:
+        display.show()
+        display.text('- Waiting for PKT -', 15, 20, 1)
+    else:
+        # Display the packet text and rssi
+        display.fill(0)
+        prev_packet = packet
+        packet_text = str([hex(c) for c in prev_packet])
+
+        #packet_text = str(prev_packet, "utf8")
+        display.text('RX RECIEVED: ', 0, 0, 1)
+        display.text(packet_text, 25, 0, 1)
+        time.sleep(3)
+
+    # Send Test
+#     virtualButton = input()
+#     if(virtualButton == "s"):
+#         SwitchPins(True)
+#         display.fill(0)
+#         button_c_data = bytes("SpicySpaceCraft","utf-8")
+#         rfm9x.send(button_c_data)
+#         display.text('SpicySpaceCraft', 25, 15, 1)
+
+
+    display.show()
+    time.sleep(0.1)
+