Merge pull request 'dev' (#1) from dev into main

Reviewed-on: https://git.dwestgate.us/david/cat-tracker/pulls/1

.gitignore

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

.vscode/settings.json

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+{
+    "python.analysis.stubPath": "./typings"
+}

README.md

@@ -1,3 +1,109 @@
 # cat-tracker
 
-A multi-function application designed to run on a pi node. When used in a mesh network, this app will help track your cat with a CC2500 based radio collar, using complementary CC2500 based radio modules interfaced with your Pi. 
+A multi-function application designed to run on a pi node. When used in a mesh network, this app will help track your cat with a CC2500 based radio collar, using complementary CC2500 based radio modules interfaced with your Pi. 
+
+The implementation here uses CC2500 register values which intend to mimic my [Girafus M07A](https://www.girafus.com/en-en/collections/peilsender/products/ersatzteil-basismodul-fur-girafus%C2%AE-pro-track-tor-katzen-hunde-haustier-kleintier-sucher) unit. This unit is paired with my associated [tracker](https://www.girafus.com/en-en/collections/peilsender/products/extra-sender-tag-fur-den-girafus%C2%AE-pro-track-tor-haustier-hund-katze-kleintier-finder-sucher-ortung) 
+
+## Links
+* [Arduion Forum Port](https://forum.arduino.cc/t/replicating-a-signal-from-a-locating-device-2-4ghz-to-locate-tag/321993/2)
+* [cc2500 data sheet](./cc2500.pdf)
+* [C Code transciever example](https://github.com/alexbirkett/cc2500-raspberry-pi)
+
+## CC2500 to Raspberry Pi GPIO Pin Mapping
+
+| CC2500 Pin | Function Description                                 | Raspberry Pi GPIO Pin         | GPIO Number |
+|------------|------------------------------------------------------|-------------------------------|-------------|
+| GND        | Ground                                               | Pin 6                         | -           |
+| VCC        | 3.3V Power (⚠️ **Do not use 5V**)                     | Pin 1 or Pin 17               | -           |
+
+### SPI Connections
+
+| CC2500 Pin | Function | Raspberry Pi GPIO Pin         | GPIO Number |
+|------------|----------|-------------------------------|-------------|
+| SI         | MOSI     | Pin 19                        | GPIO 10     |
+| SCK        | SCLK     | Pin 23                        | GPIO 11     |
+| CSN        | CE0 (Chip Select) | Pin 24              | GPIO 8      |
+| SO         | MISO     | Pin 21                        | GPIO 9      |
+
+### Interrupt Pins
+
+| CC2500 Pin | Function                                  | Raspberry Pi GPIO Pin         | GPIO Number |
+|------------|-------------------------------------------|-------------------------------|-------------|
+| GDO0       | Interrupt/Data Ready                      | Pin 11                        | GPIO 17     |
+| GDO2       | Additional Interrupt/Data Line            | Pin 23                        | GPIO 27     |
+
+### Power Amplifier Pins (If Applicable)
+
+| CC2500 Pin | Function                                  | Raspberry Pi GPIO Pin         | Notes                                  |
+|------------|-------------------------------------------|-------------------------------|----------------------------------------|
+| PA_EN      | Control Power Amplifier (Optional)        | Any GPIO Pin                  | Connect if amplifier control is needed |
+| PA_EX      | Reserved                                  | Not Connected                 | Only connect if required               |
+
+## Reverse Engineering the Registers
+
+### SmartRF Studio
+
+#### Install
+[SmartRF Studio](https://www.ti.com/tool/SMARTRFTM-STUDIO#downloads) will automatically generate a configuration for the CC2500 Radio based on some RF parameters
+* A free registration and login is required to download this app from Texas Instruments
+* The app seems to run well via `wine` on linux. I chose to install it on an actual Windows OS, then copy the binaries.
+
+#### Copy Register JSON template
+When this is installed, copy the code export json file to help export the initial register configuration in a JSON format
+
+```bash
+cp srfexp_json.xml "~/Documents/Texas Instruments/SmartRF Studio v7/codeexport/."
+# Example copy command for linux+wine 
+```
+
+#### Understanding necessary RF Parameters
+In SmartRF Studio, open the CC2500 Device Controller under the 2.4 GHZ list.
+
+At the time of writing, it is believed this device uses 250 kBaud MSK encoding. We will choose this option.
+
+Next we need to figure out the Base Frequency, Channel numbers, and Channel Spacing
+![smart_rf](./images/smart_rf.png)
+
+### Singal Capture
+I have captured the initial signal emitted by the handheld unit when it is first powered on. To do this, I have used a HackRF SDR + gqrx application on linux.
+
+The known frequency range is 2400 – 2483.5 MHz, and my SDR has a 20 MHZ bandwidth. I choose sweep for signals by tuning the following frequencies
+| Sweep # | Center Frequency | Center Frequency (kHz) | Approx. Coverage (MHz) | Approx. Coverage (kHz)     |
+|---------|------------------|-------------------------|-------------------------|-----------------------------|
+| 1       | 2410 MHz         | 2,410,000 kHz           | 2400 – 2420 MHz         | 2,400,000 – 2,420,000 kHz   |
+| 2       | 2430 MHz         | 2,430,000 kHz           | 2420 – 2440 MHz         | 2,420,000 – 2,440,000 kHz   |
+| 3       | 2450 MHz         | 2,450,000 kHz           | 2440 – 2460 MHz         | 2,440,000 – 2,460,000 kHz   |
+| 4       | 2470 MHz         | 2,470,000 kHz           | 2460 – 2480 MHz         | 2,460,000 – 2,480,000 kHz   |
+| 5       | 2483.5 MHz       | 2,483,500 kHz           | 2473.5 – 2483.5 MHz     | 2,473,500 – 2,483,500 kHz   |
+
+#### Signal 00
+2.423257000 GHz | 2423.257000 MHz | 2423257.000 kHz |
+![signal_00](./images/signals/signal00.png)
+#### Signal 0
+2.431258000 GHz | 2431.258000 MHz| 2431258.000 kHz
+![signal_0](./images/signals/signal0.png)
+#### Signal 1
+2.447257000 GHz | 2447.257000 MHz | 2447257.000 kHz
+![signal_1](./images/signals/signal1.png)
+#### Signal 2
+2.450225000 GHz | 2450.225000 MHz | 2450225.000 kHz
+![signal_2](./images/signals/signal2.png)
+#### Signal 3
+2.471275000 GHz | 2471.275000 MHz | 2471275.000 kHz
+![signal_3](./images/signals/signal3.png)
+
+#### Signal Summary
+
+* Base frequency: ? MHz
+* Date Rate ? Baud
+* Channel spacing: ? kHz
+* Signal channels:
+* Signal 00 → Channel ?
+* Signal 0 → Channel ?
+* Signal 1 → Channel ?
+* Signal 2 → Channel ?
+* Signal 3 → Channel ?
+
+
+## Run
+`python3 -m src.main`

src/common.py

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+from spidev import SpiDev
+import RPi.GPIO as GPIO
+from .util import sleep, get_addr
+from .init_regs_value import init_regs_value
+from .regs_addr import regs_addr
+
+CONFIG_REGS = regs_addr["CONFIG_REGS"]
+STROBES = regs_addr["STROBES"]
+STATUS = regs_addr["STATUS"]
+MEMORY = regs_addr["MEMORY"]
+MASKS = regs_addr["MASKS"]
+ACCESS = regs_addr["ACCESS"]
+SRES = STROBES["SRES"]
+SNOP = STROBES["SNOP"]
+VERSION = STATUS["VERSION"]
+MARCSTATE = STATUS["MARCSTATE"]
+
+
+def write_reg(spi: SpiDev, addr: int, value: int):
+    """Write single byte to a register"""
+    spi.xfer2([addr, value])
+    sleep(0.1)
+
+
+def read_register(spi: SpiDev, addr: int):
+    READ_SINGLE = get_addr("READ_SINGLE")
+    # Send address | 0x80 (read), then 0x00 dummy to clock in response
+    response = spi.xfer2([READ_SINGLE | addr, 0x00])
+    # sleep(0.1)
+    return response[1]
+
+
+def write_burst(spi: SpiDev, addr: int, data):
+    """Write multiple bytes using burst write"""
+    WRITE_BURST = get_addr("WRITE_BURST")
+    tbuf = [addr | WRITE_BURST] + data
+    spi.xfer2(tbuf)
+    sleep(0.1)
+
+
+def read_burst(spi: SpiDev, addr: int, length):
+    """Read multiple bytes using burst read"""
+    READ_BURST = get_addr("READ_BURST")
+    rbuf = [addr | READ_BURST] + [0x00] * length
+    response = spi.xfer2(rbuf)
+    sleep(0.1)
+    return response[1:]  # Skip status byte
+
+
+def strobe(spi: SpiDev, command: int):
+    """Send a command strobe to CC2500"""
+    spi.xfer2([command])
+    sleep(0.1)
+
+
+def init_cc_2500(spi: SpiDev):
+    for reg_name, value in init_regs_value.items():
+        addr = get_addr(reg_name)
+        write_reg(spi, addr, value)
+
+
+def setup_spi():
+    spi = SpiDev()
+    spi.open(0, 0)  # Bus 0, CE0 (Pin 24)
+    spi.max_speed_hz = 100_000  # Safe start speed
+    spi.mode = 0b00  # SPI mode 0
+    return spi
+
+
+def setup_gpio(GDO0_PIN=17, GDO2_PIN=27):
+    GPIO.setmode(GPIO.BCM)
+    GPIO.setup(GDO0_PIN, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
+    GPIO.setup(GDO2_PIN, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
+    sleep(0.1)
+
+
+def reset(spi: SpiDev):
+    # print("Sending SRES (reset)...")
+    spi.xfer2([SRES])
+    sleep(0.5)
+
+    # print("Sending SNOP (no-op)...")
+    status = spi.xfer2([SNOP])[0]
+    print(f"Status byte: 0x{status:02X}")
+
+    # print("Reading MARCSTATE...")
+    marc = spi.xfer2([MARCSTATE | 0x80, 0x00])[0]
+    print(f"Marcstate byte: 0x{marc:02X}")
+
+    print("Reading VERSION register...")
+    version = read_register(spi, VERSION)
+    print(f"CC2500 VERSION register: 0x{version:02X}")
+    # if version != 0x2F:
+    #     raise Exception("Expected Version was 0x2F!! Quitting")
+
+
+def test_read_write_reg(spi: SpiDev, dbg=False):
+    FIFOTHR = get_addr("FIFOTHR")
+    initial_val = read_register(spi, FIFOTHR)
+    test_value = initial_val + 1
+    write_reg(spi, FIFOTHR, test_value)
+    check = read_register(spi, FIFOTHR)
+    write_reg(spi, FIFOTHR, initial_val)
+    if (check != test_value) or dbg:
+        print("initial value ", initial_val)
+        print("test value ", test_value)
+        print("check ", check)
+        if not dbg:
+            raise Exception("Test Read+Write failed")
+    return check == test_value

src/init_regs_value.py

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+# Address Config = No address check 
+# Base Frequency = 2447.256836 
+# CRC Autoflush = false 
+# CRC Enable = true 
+# Carrier Frequency = 2447.256836 
+# Channel Number = 0 
+# Channel Spacing = 199.951172 
+# Data Format = Normal mode 
+# Data Rate = 249.939 
+# Device Address = 0 
+# Manchester Enable = false 
+# Modulated = true 
+# Modulation Format = MSK 
+# Packet Length = 255 
+# Packet Length Mode = Variable packet length mode. Packet length configured by the first byte after sync word 
+# Phase Transition Time = 0 
+# Preamble Count = 4 
+# RX Filter BW = 541.666667 
+# Sync Word Qualifier Mode = 30/32 sync word bits detected 
+# TX Power = 0 
+# Whitening = false 
+init_regs_value = {
+    "IOCFG0"  :     0x06,      # 6 - GDO0OUTPUT PIN CONFIGURATION 
+    "PKTCTRL0":     0b00000001,# 5 - PACKET AUTOMATION CONTROL
+    "PKTCTRL1":     0b00000100,# 4 - PACKET AUTOMATION CONTROL
+    "FSCTRL1" :     0x12,      # 18 - FREQUENCY SYNTHESIZER CONTROL 
+    "FREQ1"   :     0x20,      # 32 - FREQUENCY CONTROL WORD, MIDDLE BYTE 
+    "FREQ0"   :     0x11,      # 17 - FREQUENCY CONTROL WORD, LOW BYTE 
+    "MDMCFG4" :     0x2D,      # 45 - MODEM CONFIGURATION 
+    "MDMCFG3" :     0x3B,      # 59 - MODEM CONFIGURATION 
+    "MDMCFG2" :     0xF3,      # 243 - MODEM CONFIGURATION
+    "DEVIATN" :     0x00,      # 0 - MODEM DEVIATION SETTING 
+    "MCSM0"   :     0x18,      # 24 - MAIN RADIO CONTROL STATE MACHINE CONFIGURATION 
+    "FOCCFG"  :     0x1D,      # 29 - FREQUENCY OFFSET COMPENSATION CONFIGURATION
+    "BSCFG"   :     0x1C,      # 28 - BIT SYNCHRONIZATION CONFIGURATION
+    "AGCCTRL2":     0xC7,      # 199 - AGC CONTROL
+    "AGCCTRL1":     0x00,      # 0 - AGC CONTROL
+    "AGCCTRL0":     0xB0,      # 176 - AGC CONTROL
+    "FREND1"  :     0xB6,      # 182 - FRONT END RX CONFIGURATION 
+    "FSCAL3"  :     0xEA,      # 234 - FREQUENCY SYNTHESIZER CALIBRATION 
+    "FSCAL1"  :     0x00,      # 0 - FREQUENCY SYNTHESIZER CALIBRATION 
+    "FSCAL0"  :     0x11,      # 17 - FREQUENCY SYNTHESIZER CALIBRATION 
+}

src/main.py

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+import spidev
+from .util import print_gdo_state, sleep, get_addr, dump_regs, debug, GDO0_PIN, GDO2_PIN
+from .receive import rx_data_rf
+from .transmit import transmit_packet
+from .common import (
+    reset,
+    setup_spi,
+    setup_gpio,
+    read_register,
+    test_read_write_reg,
+    init_cc_2500,
+    write_reg,
+    SRES,
+    SNOP,
+    MARCSTATE,
+    VERSION,
+)
+
+
+def menu():
+    print("\nMenu")
+    print("1: Read Reg by name")
+    print("2: Write reg hex value by name")
+    print("3: Dump registers")
+    print("4: rx_data_rf")
+    print("5: transmit_packet")
+    print("6: Run Read+Write test")
+    print("7: Print GDO state")
+    print("0: Quit")
+
+
+if __name__ == "__main__":
+    setup_gpio(GDO0_PIN, GDO2_PIN)
+    print_gdo_state(GDO0_PIN, GDO2_PIN)
+    spi = setup_spi()
+    reg_name = ""
+    reg_hex_val = ""
+    try:
+
+        reset(spi)
+        test_read_write_reg(spi)
+        init_cc_2500(spi)
+        stop = False
+        while not stop:
+            menu()
+            cmd = int(input("$: "))
+            if cmd == 0:
+                stop = True
+            elif cmd == 1:
+                reg_name = input("Register name: ")
+                addr = get_addr(reg_name)
+                value = read_register(spi, addr)
+                print(
+                    "Address: "
+                    + hex(addr)
+                    + ", Value: "
+                    + hex(value)
+                    + " == "
+                    + str(value)
+                )
+            elif cmd == 2:
+                reg_name = input("Register name: ")
+                addr = get_addr(reg_name)
+                value = int(input("New Register value (hex): "), 16)
+                write_reg(spi, addr, value)
+                sleep(0.1)
+                value_check = read_register(spi, addr)
+                print("Updated Value: " + hex(value) + " == " + str(value))
+            elif cmd == 3:
+                dump_regs(spi, True)
+            elif cmd == 4:
+                while True:
+                    rx_data_rf(spi)
+            elif cmd == 5:
+                transmit_packet(spi)
+            elif cmd == 6:
+                res = test_read_write_reg(spi, True)
+                print("Test result : " + str(res))
+            elif cmd == 7:
+                print_gdo_state(GDO0_PIN, GDO2_PIN)
+            else:
+                print("Invalid command")
+    finally:
+        print("Closing SPI...")
+        sleep(0.1)
+        spi.close()
+        sleep(0.1)

src/receive.py

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+from datetime import datetime
+from pathlib import Path
+
+from spidev import SpiDev
+from .util import sleep, get_addr, digital_read, GDO0_PIN, GDO2_PIN, debug, delay
+from .common import strobe, read_register
+
+SIDLE = get_addr("SIDLE")
+SFRX = get_addr("SFRX")
+SRX = get_addr("SRX")
+RXFIFO = get_addr("RXFIFO")
+RSSI = get_addr("RSSI")
+
+
+def print_packet(spi: SpiDev, packet_length):
+    for i in range(packet_length):
+        print(f", byte: {0}: 0x{1}", i, read_register(spi, RXFIFO))
+
+
+# Save packet to a timestamped binary file
+def save_packet(packet: list[int]):
+    # 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: list[int]):
+    if len(packet) < 2:
+        raise ValueError("Packet too short to contain RSSI and status bytes.")
+    rssi_raw = packet[-2]  # Second-to-last byte is RSSI
+    return rssi_raw
+
+
+def get_rssi_from_reg(spi: SpiDev):
+    return read_register(spi, RSSI)
+
+
+def get_signal_strength_rssi_raw(rssi_raw: int) -> float:
+    if rssi_raw >= 128:
+        rssi_dec = rssi_raw - 256
+    else:
+        rssi_dec = rssi_raw
+    return rssi_dec / 2.0 - 74  # According to CC2500 datasheet
+
+
+def flush_rx(spi: SpiDev):
+    # 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)
+    delay(10)
+    strobe(spi, SIDLE)
+    delay(10)
+    # Flush RX FIFO
+    strobe(spi, SFRX)
+    delay(10)
+
+
+def rx_data_rf(spi: SpiDev):
+    strobe(spi, SRX)
+    gdo2_state = False
+    count = 0
+    strength = 0
+    while gdo2_state == False:
+        gdo2_state = digital_read(GDO2_PIN)
+        delay(1)
+        count = count + 1
+        if count > 1000:
+            flush_rx(spi)
+            # print("ERR NO DATA")
+            return
+    while gdo2_state == True:
+        gdo2_state = digital_read(GDO2_PIN)
+        delay(100)
+    packet_length: int = read_register(spi, RXFIFO)
+    packet: list[int] = [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)

src/regs_addr.py

@@ -0,0 +1,197 @@
+from typing import TypedDict
+
+
+class ConfigRegs(TypedDict):
+    IOCFG2: int
+    IOCFG1: int
+    IOCFG0: int
+    FIFOTHR: int
+    SYNC1: int
+    SYNC0: int
+    PKTLEN: int
+    PKTCTRL1: int
+    PKTCTRL0: int
+    ADDR: int
+    CHANNR: int
+    FSCTRL1: int
+    FSCTRL0: int
+    FREQ2: int
+    FREQ1: int
+    FREQ0: int
+    MDMCFG4: int
+    MDMCFG3: int
+    MDMCFG2: int
+    MDMCFG1: int
+    MDMCFG0: int
+    DEVIATN: int
+    MCSM2: int
+    MCSM1: int
+    MCSM0: int
+    FOCCFG: int
+    BSCFG: int
+    AGCCTRL2: int
+    AGCCTRL1: int
+    AGCCTRL0: int
+    WOREVT1: int
+    WOREVT0: int
+    WORCTRL: int
+    FREND1: int
+    FREND0: int
+    FSCAL3: int
+    FSCAL2: int
+    FSCAL1: int
+    FSCAL0: int
+    RCCTRL1: int
+    RCCTRL0: int
+    FSTEST: int
+    PTEST: int
+    AGCTEST: int
+    TEST2: int
+    TEST1: int
+    TEST0: int
+
+
+class Strobes(TypedDict):
+    SRES: int
+    SFSTXON: int
+    SXOFF: int
+    SCAL: int
+    SRX: int
+    STX: int
+    SIDLE: int
+    SAFC: int
+    SWOR: int
+    SPWD: int
+    SFRX: int
+    SFTX: int
+    SWORRST: int
+    SNOP: int
+
+
+class Status(TypedDict):
+    PARTNUM: int
+    VERSION: int
+    FREQEST: int
+    LQI: int
+    RSSI: int
+    MARCSTATE: int
+    WORTIME1: int
+    WORTIME0: int
+    PKTSTATUS: int
+    VCO_VC_DAC: int
+    TXBYTES: int
+    RXBYTES: int
+    NUM_RXBYTES: int
+
+
+class Memory(TypedDict):
+    PATABLE: int
+    TXFIFO: int
+    RXFIFO: int
+
+
+class Masks(TypedDict):
+    LQI_RX: int
+    CRC_OK: int
+
+
+class Access(TypedDict):
+    WRITE_BURST: int
+    READ_SINGLE: int
+    READ_BURST: int
+
+
+class RegsAddr(TypedDict):
+    CONFIG_REGS: ConfigRegs
+    STROBES: Strobes
+    STATUS: Status
+    MEMORY: Memory
+    MASKS: Masks
+    ACCESS: Access
+
+
+regs_addr: RegsAddr = {
+    "CONFIG_REGS": {
+        "IOCFG2": 0x00,
+        "IOCFG1": 0x01,
+        "IOCFG0": 0x02,
+        "FIFOTHR": 0x03,
+        "SYNC1": 0x04,
+        "SYNC0": 0x05,
+        "PKTLEN": 0x06,
+        "PKTCTRL1": 0x07,
+        "PKTCTRL0": 0x08,
+        "ADDR": 0x09,
+        "CHANNR": 0x0A,
+        "FSCTRL1": 0x0B,
+        "FSCTRL0": 0x0C,
+        "FREQ2": 0x0D,
+        "FREQ1": 0x0E,
+        "FREQ0": 0x0F,
+        "MDMCFG4": 0x10,
+        "MDMCFG3": 0x11,
+        "MDMCFG2": 0x12,
+        "MDMCFG1": 0x13,
+        "MDMCFG0": 0x14,
+        "DEVIATN": 0x15,
+        "MCSM2": 0x16,
+        "MCSM1": 0x17,
+        "MCSM0": 0x18,
+        "FOCCFG": 0x19,
+        "BSCFG": 0x1A,
+        "AGCCTRL2": 0x1B,
+        "AGCCTRL1": 0x1C,
+        "AGCCTRL0": 0x1D,
+        "WOREVT1": 0x1E,
+        "WOREVT0": 0x1F,
+        "WORCTRL": 0x20,
+        "FREND1": 0x21,
+        "FREND0": 0x22,
+        "FSCAL3": 0x23,
+        "FSCAL2": 0x24,
+        "FSCAL1": 0x25,
+        "FSCAL0": 0x26,
+        "RCCTRL1": 0x27,
+        "RCCTRL0": 0x28,
+        "FSTEST": 0x29,
+        "PTEST": 0x2A,
+        "AGCTEST": 0x2B,
+        "TEST2": 0x2C,
+        "TEST1": 0x2D,
+        "TEST0": 0x2E,
+    },
+    "STROBES": {
+        "SRES": 0x30,
+        "SFSTXON": 0x31,
+        "SXOFF": 0x32,
+        "SCAL": 0x33,
+        "SRX": 0x34,
+        "STX": 0x35,
+        "SIDLE": 0x36,
+        "SAFC": 0x37,
+        "SWOR": 0x38,
+        "SPWD": 0x39,
+        "SFRX": 0x3A,
+        "SFTX": 0x3B,
+        "SWORRST": 0x3C,
+        "SNOP": 0x3D,
+    },
+    "STATUS": {
+        "PARTNUM": 0x30,
+        "VERSION": 0x31,
+        "FREQEST": 0x32,
+        "LQI": 0x33,
+        "RSSI": 0x34,
+        "MARCSTATE": 0x35,
+        "WORTIME1": 0x36,
+        "WORTIME0": 0x37,
+        "PKTSTATUS": 0x38,
+        "VCO_VC_DAC": 0x39,
+        "TXBYTES": 0x3A,
+        "RXBYTES": 0x3B,
+        "NUM_RXBYTES": 0x7F,
+    },
+    "MEMORY": {"PATABLE": 0x3E, "TXFIFO": 0x3F, "RXFIFO": 0x3F},
+    "MASKS": {"LQI_RX": 0x01, "CRC_OK": 0x80},
+    "ACCESS": {"WRITE_BURST": 0x40, "READ_SINGLE": 0x80, "READ_BURST": 0xC0},
+}

src/transmit.py

@@ -0,0 +1,21 @@
+from .common import strobe, write_burst
+from .util import get_addr
+
+
+SIDLE = get_addr("SIDLE")
+SFTX = get_addr("SFTX")
+STX = get_addr("STX")
+WRITE_BURST = get_addr("WRITE_BURST")
+TXFIFO_BURST = 0x7F
+
+
+def transmit_packet(spi):
+    strobe(spi, SIDLE)
+    strobe(spi, SFTX)
+    data = [0] * 5
+    data[0] = 5
+    data[1] = 1
+    data[2] = 2
+    data[3] = 3
+    data[4] = 4
+    write_burst(spi, TXFIFO_BURST, data)

src/util.py

@@ -0,0 +1,72 @@
+from spidev import SpiDev
+from .regs_addr import regs_addr
+import RPi.GPIO as GPIO
+import time
+
+debug = True
+GDO0_PIN = 17
+GDO2_PIN = 27
+
+
+def rr(spi: SpiDev, addr):
+    READ_SINGLE = get_addr("READ_SINGLE")
+    # Send address | 0x80 (read), then 0x00 dummy to clock in response
+    response = spi.xfer2([READ_SINGLE | addr, 0x00])
+    sleep(0.1)
+    return response[1]
+
+
+def print_gdo_state(GDO0_PIN=17, GDO2_PIN=27):
+    gdo0 = GPIO.input(GDO0_PIN)  # Reads 1 or 0
+    gdo2 = GPIO.input(GDO2_PIN)
+    print(f"GDO0 (GPIO{GDO0_PIN}): {gdo0}, GDO2 (GPIO{GDO2_PIN}): {gdo2}")
+    sleep(0.1)
+
+
+def digital_read(GDO_PIN: int):
+    return GPIO.input(GDO_PIN)
+
+
+def get_addr(name: str):
+    addr = 0x00
+    stop = False
+    for reg_type, reg_data in regs_addr.items():
+        for reg_name, reg_addr in reg_data.items():
+            if reg_name == name:
+                stop = True
+                addr = int(reg_addr)
+    if stop == False:
+        raise Exception("Failed to find address for " + name)
+    return addr
+
+
+def dump_regs(spi: SpiDev, cfgonly=False):
+    if cfgonly:
+        for reg_name, reg_addr in regs_addr["CONFIG_REGS"].items():
+            name: str = reg_name
+            value = rr(spi, reg_addr)
+            print((name + ":").ljust(15) + hex(value).ljust(4) + "\t" + str(value))
+    else:
+        for reg_type, reg_data in regs_addr.items():
+            for reg_name, reg_addr in reg_data.items():
+                name: str = reg_name
+                value = rr(spi, reg_addr)
+                print((name + ":").ljust(15) + hex(value).ljust(4) + "\t" + str(value))
+
+
+# def disable_crc(spi):
+#     spi.xfer2([CONFIG_REGS["PKTCTRL0"], 0x01])
+
+
+def sleep(t):
+    return time.sleep(t)
+
+
+def delay(t):
+    """Delay for t milliseconds."""
+    time.sleep(t / 1000.0)
+
+
+def delayMicroseconds(t):
+    """Delay for t microseconds."""
+    time.sleep(t / 1_000_000.0)

srfexp_json.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<registerexporttemplate>
+  <name><![CDATA[JSON]]></name>
+  <commentStart><![CDATA[//]]></commentStart>
+  <commentEnd><![CDATA[]]></commentEnd>
+  <paramSummary><![CDATA[0]]></paramSummary>
+  <paTable><![CDATA[0]]></paTable>
+  <header><![CDATA[{
+]]></header>
+  <registers><![CDATA[    "@RN@"@<<@: @<<@{ "hex":"0x@VH@", "dec":@VD@},]]></registers>
+  <footer><![CDATA[}]]></footer>
+  <filename><![CDATA[@CHIPID@_simple_link_reg_config.json]]></filename>
+  <devices><![CDATA[]]></devices>
+</registerexporttemplate>

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