save pkt in file

.gitignore

@@ -0,0 +1,2 @@
+saved_packets/*
+src/__pycache__

.vscode/settings.json

@@ -1,3 +1,3 @@
 {
- 
+    "python.analysis.stubPath": "./typings"
 }

README.md

@@ -106,4 +106,4 @@ The known frequency range is 2400 – 2483.5 MHz, and my SDR has a 20 MHZ bandwi
 
 
 ## Run
-`python3 read.py`
+`python3 -m src.main`

freq.txt

@@ -1,12 +0,0 @@
-Handheld Init
-2.4312 GHZ (mid)
-2.439256 (strong)
-2.447 GHZ (strong)
-2.4632 GHZ (strong)
-2.471 GHZ (weak)
-
-Test Pts
-2410000.000
-2430000.000
-2450000.000
-2470000.000

src/common.py

@@ -83,7 +83,7 @@ def reset(spi):
     version = read_register(spi, VERSION)
     print(f"CC2500 VERSION register: 0x{version:02X}")
     # if version != 0x2F:
-    #     raise Exception("Expected Version was 0x0F!! Quitting")
+    #     raise Exception("Expected Version was 0x2F!! Quitting")
 
 
 def test_read_write_reg(spi, dbg=False):

src/receive.py

@@ -1,3 +1,5 @@
+from datetime import datetime
+from pathlib import Path
 from .util import sleep, get_addr, digital_read, GDO0_PIN, GDO2_PIN, debug, delay
 import time
 from .common import strobe, read_register
@@ -12,9 +14,21 @@ def print_packet(spi, packet_length):
     for i in range(packet_length):
         print(f", byte: {0}: 0x{1}", i, read_register(spi, RXFIFO))
 
-#TODO
+# Save packet to a timestamped binary file
-def save_packet():
+def save_packet(packet: list):
-    print()
+    # Create directory to store packets if it doesn't exist
+    packet_dir = Path("saved_packets")
+    packet_dir.mkdir(parents=True, exist_ok=True)
+
+    # Create timestamped filename
+    timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
+    filename = packet_dir / f"packet_{timestamp}.bin"
+
+    # Save packet as binary data
+    with open(filename, "wb") as f:
+        f.write(bytearray(packet))
+
+    print(f"Packet saved to {filename}")
 
 
 def get_rssi_from_pkt(packet):
@@ -61,57 +75,13 @@ def rx_data_rf(spi):
         gdo2_state = digital_read(GDO2_PIN)
         delay(100)
     packet_length: int = read_register(spi, RXFIFO)
-    # print("Packet Length {0}".format(packet_length))
     packet: list = [read_register(spi, RXFIFO) for _ in range(packet_length)]
     rssi_raw = get_rssi_from_pkt(packet)
     strength = get_signal_strength_rssi_raw(rssi_raw)
     print("Length: {0} bytes\t Signal: {1} dBm".format(packet_length, strength) )
-
+    save_packet(packet)
     # Make sure that the radio is in IDLE state before flushing the FIFO
     # (Unless RXOFF_MODE has been changed, the radio should be in IDLE state at this point)
     strobe(spi, SIDLE)
     # Flush RX FIFO
     strobe(spi, SFRX)
-
-# def burst_read(spi, addr, length):
-#     """Read multiple bytes"""
-#     READ_SINGLE = get_addr("READ_SINGLE")
-#     READ_BURST = get_addr("READ_BURST")
-#     return spi.xfer2([addr | READ_SINGLE | READ_BURST] + [0x00] * length)
-
-
-
-# def read_fifo(spi):
-#     # Burst read RX FIFO
-#     READ_BURST = get_addr("READ_BURST")
-#     RXFIFO = get_addr("RXFIFO")
-#     fifo = spi.xfer2([RXFIFO | READ_BURST] + [0x00]*64)  # Max 64 bytes
-#     return fifo[1:]
-
-
-# def receive_packet(spi):
-#     SFRX = get_addr("SFRX")
-#     RXBYTES = get_addr("RXBYTES")
-#     SRX = get_addr("SRX")
-    
-#     # Flush RX FIFO
-#     strobe(spi, SFRX)
-#     time.sleep(0.5)  # 1 ms delay to allow flush
-#     # Go into RX mode
-#     strobe(spi, SRX) 
-
-#     # Wait for data (use GDO0 in real app)
-#     sleep(0.5)
-
-#     # Check RXBYTES
-    
-#     timeout = time.time() + 2  # 2-second timeout
-#     while time.time() < timeout:
-#         rx_bytes = read_register(spi, RXBYTES) & 0x7F
-#         if rx_bytes > 0:
-#             data = read_fifo(spi)
-#             print(f"Received: {data}")
-#             return data
-#         time.sleep(0.01)
-
-# print("Timeout: no data received.")

src/util.py

@@ -19,14 +19,7 @@ def print_gdo_state(GDO0_PIN=17, GDO2_PIN=27):
     sleep(0.1) 
 
 def digital_read(GDO_PIN: int):
-    bit = GPIO.input(GDO_PIN)
+    return GPIO.input(GDO_PIN)
-    # print("bit " + str(bit))
-    if bit == 1:
-        return True
-    elif bit == 0:
-        return False
-    else:
-        raise Exception("Unexpected digital read GDO_PIN{GDO_PIN} {bit}")
 
 def get_addr(name):
     addr = ""

typings/spidev/__init__.pyi

@@ -0,0 +1,6 @@
+class SpiDev:
+    def open(self, bus: int, device: int) -> None: ...
+    def close(self) -> None: ...
+    def xfer2(self, data: list[int]) -> list[int]: ...
+    max_speed_hz: int
+    mode: int

wiring.txt

@@ -1,31 +0,0 @@
-CC2500 Pins to Raspberry Pi GPIO Pins
-GND (CC2500) → Ground (Pin 6 on Raspberry Pi GPIO header)
-
-VCC (CC2500) → 3.3V Power (Pin 1 or Pin 17 on Raspberry Pi GPIO header)
-
-Ensure the CC2500 module operates at 3.3V. Connecting it to 5V may damage it.
-
-SPI Pins:
-SI (CC2500) → MOSI (GPIO 10) (Pin 19 on Raspberry Pi GPIO header)
-
-SCK (CC2500) → SCLK (GPIO 11) (Pin 23 on Raspberry Pi GPIO header)
-
-CSN (CC2500) → CE0 (GPIO 8) (Pin 24 on Raspberry Pi GPIO header)
-
-This is the Chip Select line.
-
-SO (CC2500) → MISO (GPIO 9) (Pin 21 on Raspberry Pi GPIO header)
-
-Optional Pins:
-GDO0 (CC2500) → Any GPIO Pin (e.g., GPIO 18) (Pin 12 on Raspberry Pi GPIO header)
-
-Use this for interrupt handling or data-ready signals if required.
-
-GDO2 (CC2500) → Any GPIO Pin (e.g., GPIO 25) (Pin 22 on Raspberry Pi GPIO header)
-
-Additional interrupt or data pin.
-
-Power Amplifier Pins (If Applicable):
-PA_EN (CC2500) → Any GPIO Pin (Optional, depending on whether you control the amplifier externally or not).
-
-PA_EX (CC2500) → Not Connected (unless needed for a specific configuration)