Mark Qvist
7 years ago
parent
f40996f59e
commit
5f84685287
2 changed files with 494 additions and 0 deletions
@ -0,0 +1,472 @@ |
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from __future__ import print_function |
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from Interface import Interface |
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from time import sleep |
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import sys |
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import serial |
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import threading |
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import time |
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import math |
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import RNS |
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class KISS(): |
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FEND = chr(0xC0) |
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FESC = chr(0xDB) |
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TFEND = chr(0xDC) |
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TFESC = chr(0xDD) |
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CMD_UNKNOWN = chr(0xFE) |
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CMD_DATA = chr(0x00) |
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CMD_FREQUENCY = chr(0x01) |
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CMD_BANDWIDTH = chr(0x02) |
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CMD_TXPOWER = chr(0x03) |
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CMD_SF = chr(0x04) |
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CMD_CR = chr(0x05) |
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CMD_RADIO_STATE = chr(0x06) |
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CMD_RADIO_LOCK = chr(0x07) |
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CMD_DETECT = chr(0x08) |
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CMD_PROMISC = chr(0x0E) |
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CMD_READY = chr(0x0F) |
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CMD_STAT_RX = chr(0x21) |
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CMD_STAT_TX = chr(0x22) |
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CMD_STAT_RSSI = chr(0x23) |
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CMD_BLINK = chr(0x30) |
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CMD_RANDOM = chr(0x40) |
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CMD_FW_VERSION = chr(0x50) |
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CMD_ROM_READ = chr(0x51) |
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DETECT_REQ = chr(0x73) |
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DETECT_RESP = chr(0x46) |
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RADIO_STATE_OFF = chr(0x00) |
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RADIO_STATE_ON = chr(0x01) |
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RADIO_STATE_ASK = chr(0xFF) |
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CMD_ERROR = chr(0x90) |
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ERROR_INITRADIO = chr(0x01) |
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ERROR_TXFAILED = chr(0x02) |
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ERROR_EEPROM_LOCKED = chr(0x03) |
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@staticmethod |
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def escape(data): |
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data = data.replace(chr(0xdb), chr(0xdb)+chr(0xdd)) |
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data = data.replace(chr(0xc0), chr(0xdb)+chr(0xdc)) |
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return data |
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class RNodeInterface(): |
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MAX_CHUNK = 32768 |
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FREQ_MIN = 137000000 |
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FREQ_MAX = 1020000000 |
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LOG_CRITICAL = 0 |
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LOG_ERROR = 1 |
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LOG_WARNING = 2 |
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LOG_NOTICE = 3 |
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LOG_INFO = 4 |
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LOG_VERBOSE = 5 |
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LOG_DEBUG = 6 |
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LOG_EXTREME = 7 |
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def __init__(self, callback, name, port, frequency = None, bandwidth = None, txpower = None, sf = None, cr = None, loglevel = -1, flow_control = True): |
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self.serial = None |
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self.loglevel = loglevel |
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self.callback = callback |
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self.name = name |
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self.port = port |
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self.speed = 115200 |
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self.databits = 8 |
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self.parity = serial.PARITY_NONE |
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self.stopbits = 1 |
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self.timeout = 100 |
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self.online = False |
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self.frequency = frequency |
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self.bandwidth = bandwidth |
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self.txpower = txpower |
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self.sf = sf |
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self.cr = cr |
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self.state = KISS.RADIO_STATE_OFF |
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self.bitrate = 0 |
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self.r_frequency = None |
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self.r_bandwidth = None |
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self.r_txpower = None |
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self.r_sf = None |
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self.r_cr = None |
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self.r_state = None |
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self.r_lock = None |
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self.r_stat_rx = None |
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self.r_stat_tx = None |
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self.r_stat_rssi = None |
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self.r_random = None |
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self.packet_queue = [] |
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self.flow_control = flow_control |
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self.interface_ready = False |
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self.validcfg = True |
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if (self.frequency < RNodeInterface.FREQ_MIN or self.frequency > RNodeInterface.FREQ_MAX): |
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self.log("Invalid frequency configured for "+str(self), RNodeInterface.LOG_ERROR) |
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self.validcfg = False |
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if (self.txpower < 0 or self.txpower > 17): |
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self.log("Invalid TX power configured for "+str(self), RNodeInterface.LOG_ERROR) |
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self.validcfg = False |
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if (self.bandwidth < 7800 or self.bandwidth > 500000): |
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self.log("Invalid bandwidth configured for "+str(self), RNodeInterface.LOG_ERROR) |
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self.validcfg = False |
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if (self.sf < 7 or self.sf > 12): |
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self.log("Invalid spreading factor configured for "+str(self), RNodeInterface.LOG_ERROR) |
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self.validcfg = False |
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if (not self.validcfg): |
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raise ValueError("The configuration for "+str(self)+" contains errors, interface is offline") |
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try: |
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self.log("Opening serial port "+self.port+"...") |
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self.serial = serial.Serial( |
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port = self.port, |
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baudrate = self.speed, |
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bytesize = self.databits, |
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parity = self.parity, |
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stopbits = self.stopbits, |
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xonxoff = False, |
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rtscts = False, |
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timeout = 0, |
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inter_byte_timeout = None, |
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write_timeout = None, |
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dsrdtr = False, |
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) |
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except Exception as e: |
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self.log("Could not open serial port for interface "+str(self), RNodeInterface.LOG_ERROR) |
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raise e |
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if self.serial.is_open: |
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sleep(2.0) |
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thread = threading.Thread(target=self.readLoop) |
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thread.setDaemon(True) |
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thread.start() |
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self.online = True |
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self.log("Serial port "+self.port+" is now open") |
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self.log("Configuring RNode interface...", RNodeInterface.LOG_VERBOSE) |
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self.initRadio() |
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if (self.validateRadioState()): |
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self.interface_ready = True |
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self.log(str(self)+" is configured and powered up") |
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sleep(1.0) |
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else: |
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self.log("After configuring "+str(self)+", the actual radio parameters did not match your configuration.", RNodeInterface.LOG_ERROR) |
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self.log("Make sure that your hardware actually supports the parameters specified in the configuration", RNodeInterface.LOG_ERROR) |
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self.log("Aborting RNode startup", RNodeInterface.LOG_ERROR) |
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self.serial.close() |
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raise IOError("RNode interface did not pass validation") |
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else: |
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raise IOError("Could not open serial port") |
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def log(self, message, level): |
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pass |
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def initRadio(self): |
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self.setFrequency() |
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self.setBandwidth() |
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self.setTXPower() |
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self.setSpreadingFactor() |
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self.setRadioState(KISS.RADIO_STATE_ON) |
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def setFrequency(self): |
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c1 = self.frequency >> 24 |
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c2 = self.frequency >> 16 & 0xFF |
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c3 = self.frequency >> 8 & 0xFF |
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c4 = self.frequency & 0xFF |
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data = KISS.escape(chr(c1)+chr(c2)+chr(c3)+chr(c4)) |
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kiss_command = KISS.FEND+KISS.CMD_FREQUENCY+data+KISS.FEND |
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written = self.serial.write(kiss_command) |
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if written != len(kiss_command): |
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raise IOError("An IO error occurred while configuring frequency for "+self(str)) |
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def setBandwidth(self): |
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c1 = self.bandwidth >> 24 |
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c2 = self.bandwidth >> 16 & 0xFF |
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c3 = self.bandwidth >> 8 & 0xFF |
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c4 = self.bandwidth & 0xFF |
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data = KISS.escape(chr(c1)+chr(c2)+chr(c3)+chr(c4)) |
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kiss_command = KISS.FEND+KISS.CMD_BANDWIDTH+data+KISS.FEND |
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written = self.serial.write(kiss_command) |
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if written != len(kiss_command): |
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raise IOError("An IO error occurred while configuring bandwidth for "+self(str)) |
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def setTXPower(self): |
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txp = chr(self.txpower) |
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kiss_command = KISS.FEND+KISS.CMD_TXPOWER+txp+KISS.FEND |
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written = self.serial.write(kiss_command) |
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if written != len(kiss_command): |
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raise IOError("An IO error occurred while configuring TX power for "+self(str)) |
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def setSpreadingFactor(self): |
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sf = chr(self.sf) |
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kiss_command = KISS.FEND+KISS.CMD_SF+sf+KISS.FEND |
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written = self.serial.write(kiss_command) |
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if written != len(kiss_command): |
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raise IOError("An IO error occurred while configuring spreading factor for "+self(str)) |
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def setCodingRate(self): |
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cr = chr(self.cr) |
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kiss_command = KISS.FEND+KISS.CMD_CR+cr+KISS.FEND |
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written = self.serial.write(kiss_command) |
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if written != len(kiss_command): |
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raise IOError("An IO error occurred while configuring coding rate for "+self(str)) |
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def setRadioState(self, state): |
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kiss_command = KISS.FEND+KISS.CMD_RADIO_STATE+state+KISS.FEND |
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written = self.serial.write(kiss_command) |
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if written != len(kiss_command): |
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raise IOError("An IO error occurred while configuring radio state for "+self(str)) |
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def validateRadioState(self): |
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self.log("Validating radio configuration for "+str(self)+"...", RNodeInterface.LOG_VERBOSE) |
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sleep(0.25); |
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if (self.frequency != self.r_frequency): |
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self.log("Frequency mismatch", RNodeInterface.LOG_ERROR) |
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self.validcfg = False |
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if (self.bandwidth != self.r_bandwidth): |
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self.log("Bandwidth mismatch", RNodeInterface.LOG_ERROR) |
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self.validcfg = False |
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if (self.txpower != self.r_txpower): |
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self.log("TX power mismatch", RNodeInterface.LOG_ERROR) |
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self.validcfg = False |
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if (self.sf != self.r_sf): |
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self.log("Spreading factor mismatch", RNodeInterface.LOG_ERROR) |
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self.validcfg = False |
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if (self.validcfg): |
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return True |
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else: |
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return False |
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def setPromiscuousMode(self, state): |
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if state == True |
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kiss_command = KISS.FEND+KISS.CMD_PROMISC+chr(0x01)+KISS.FEND |
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else: |
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kiss_command = KISS.FEND+KISS.CMD_PROMISC+chr(0x00)+KISS.FEND |
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written = self.serial.write(kiss_command) |
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if written != len(kiss_command): |
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raise IOError("An IO error occurred while configuring promiscuous mode for "+self(str)) |
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def updateBitrate(self): |
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try: |
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self.bitrate = self.r_sf * ( (4.0/self.cr) / (math.pow(2,self.r_sf)/(self.r_bandwidth/1000)) ) * 1000 |
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self.bitrate_kbps = round(self.bitrate/1000.0, 2) |
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self.log(str(self)+" On-air bitrate is now "+str(self.bitrate_kbps)+ " kbps", RNodeInterface.LOG_DEBUG) |
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except: |
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self.bitrate = 0 |
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def processIncoming(self, data): |
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self.callback(data, self) |
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def send(self, data): |
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processOutgoing(data) |
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def processOutgoing(self,data): |
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if self.online: |
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if self.interface_ready: |
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if self.flow_control: |
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self.interface_ready = False |
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data = KISS.escape(data) |
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frame = chr(0xc0)+chr(0x00)+data+chr(0xc0) |
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written = self.serial.write(frame) |
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if written != len(frame): |
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raise IOError("Serial interface only wrote "+str(written)+" bytes of "+str(len(data))) |
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else: |
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self.queue(data) |
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def queue(self, data): |
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self.packet_queue.append(data) |
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def process_queue(self): |
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if len(self.packet_queue) > 0: |
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data = self.packet_queue.pop(0) |
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self.interface_ready = True |
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self.processOutgoing(data) |
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elif len(self.packet_queue) == 0: |
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self.interface_ready = True |
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def readLoop(self): |
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try: |
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in_frame = False |
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escape = False |
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command = KISS.CMD_UNKNOWN |
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data_buffer = "" |
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command_buffer = "" |
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last_read_ms = int(time.time()*1000) |
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while self.serial.is_open: |
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if self.serial.in_waiting: |
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byte = self.serial.read(1) |
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last_read_ms = int(time.time()*1000) |
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if (in_frame and byte == KISS.FEND and command == KISS.CMD_DATA): |
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in_frame = False |
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self.processIncoming(data_buffer) |
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data_buffer = "" |
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command_buffer = "" |
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elif (byte == KISS.FEND): |
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in_frame = True |
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command = KISS.CMD_UNKNOWN |
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data_buffer = "" |
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command_buffer = "" |
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elif (in_frame and len(data_buffer) < RNS.Reticulum.MTU): |
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if (len(data_buffer) == 0 and command == KISS.CMD_UNKNOWN): |
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command = byte |
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elif (command == KISS.CMD_DATA): |
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if (byte == KISS.FESC): |
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escape = True |
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else: |
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if (escape): |
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if (byte == KISS.TFEND): |
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byte = KISS.FEND |
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if (byte == KISS.TFESC): |
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byte = KISS.FESC |
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escape = False |
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data_buffer = data_buffer+byte |
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elif (command == KISS.CMD_FREQUENCY): |
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if (byte == KISS.FESC): |
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escape = True |
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else: |
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if (escape): |
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if (byte == KISS.TFEND): |
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byte = KISS.FEND |
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if (byte == KISS.TFESC): |
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byte = KISS.FESC |
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escape = False |
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command_buffer = command_buffer+byte |
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if (len(command_buffer) == 4): |
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self.r_frequency = ord(command_buffer[0]) << 24 | ord(command_buffer[1]) << 16 | ord(command_buffer[2]) << 8 | ord(command_buffer[3]) |
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self.log(str(self)+" Radio reporting frequency is "+str(self.r_frequency/1000000.0)+" MHz", RNodeInterface.LOG_DEBUG) |
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self.updateBitrate() |
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elif (command == KISS.CMD_BANDWIDTH): |
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if (byte == KISS.FESC): |
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escape = True |
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else: |
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if (escape): |
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if (byte == KISS.TFEND): |
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byte = KISS.FEND |
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if (byte == KISS.TFESC): |
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byte = KISS.FESC |
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escape = False |
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command_buffer = command_buffer+byte |
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if (len(command_buffer) == 4): |
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self.r_bandwidth = ord(command_buffer[0]) << 24 | ord(command_buffer[1]) << 16 | ord(command_buffer[2]) << 8 | ord(command_buffer[3]) |
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self.log(str(self)+" Radio reporting bandwidth is "+str(self.r_bandwidth/1000.0)+" KHz", RNodeInterface.LOG_DEBUG) |
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self.updateBitrate() |
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elif (command == KISS.CMD_TXPOWER): |
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self.r_txpower = ord(byte) |
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self.log(str(self)+" Radio reporting TX power is "+str(self.r_txpower)+" dBm", RNodeInterface.LOG_DEBUG) |
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elif (command == KISS.CMD_SF): |
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self.r_sf = ord(byte) |
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self.log(str(self)+" Radio reporting spreading factor is "+str(self.r_sf), RNodeInterface.LOG_DEBUG) |
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self.updateBitrate() |
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elif (command == KISS.CMD_CR): |
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self.r_cr = ord(byte) |
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self.log(str(self)+" Radio reporting coding rate is "+str(self.r_cr), RNodeInterface.LOG_DEBUG) |
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self.updateBitrate() |
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elif (command == KISS.CMD_RADIO_STATE): |
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self.r_state = ord(byte) |
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elif (command == KISS.CMD_RADIO_LOCK): |
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self.r_lock = ord(byte) |
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elif (command == KISS.CMD_STAT_RX): |
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if (byte == KISS.FESC): |
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escape = True |
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else: |
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if (escape): |
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if (byte == KISS.TFEND): |
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byte = KISS.FEND |
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if (byte == KISS.TFESC): |
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byte = KISS.FESC |
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escape = False |
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command_buffer = command_buffer+byte |
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if (len(command_buffer) == 4): |
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self.r_stat_rx = ord(command_buffer[0]) << 24 | ord(command_buffer[1]) << 16 | ord(command_buffer[2]) << 8 | ord(command_buffer[3]) |
||||||
|
|
||||||
|
elif (command == KISS.CMD_STAT_TX): |
||||||
|
if (byte == KISS.FESC): |
||||||
|
escape = True |
||||||
|
else: |
||||||
|
if (escape): |
||||||
|
if (byte == KISS.TFEND): |
||||||
|
byte = KISS.FEND |
||||||
|
if (byte == KISS.TFESC): |
||||||
|
byte = KISS.FESC |
||||||
|
escape = False |
||||||
|
command_buffer = command_buffer+byte |
||||||
|
if (len(command_buffer) == 4): |
||||||
|
self.r_stat_tx = ord(command_buffer[0]) << 24 | ord(command_buffer[1]) << 16 | ord(command_buffer[2]) << 8 | ord(command_buffer[3]) |
||||||
|
|
||||||
|
elif (command == KISS.CMD_STAT_RSSI): |
||||||
|
self.r_stat_rssi = ord(byte) |
||||||
|
elif (command == KISS.CMD_RANDOM): |
||||||
|
self.r_random = ord(byte) |
||||||
|
elif (command == KISS.CMD_ERROR): |
||||||
|
if (byte == KISS.ERROR_INITRADIO): |
||||||
|
self.log(str(self)+" hardware initialisation error (code "+RNS.hexrep(byte)+")", RNodeInterface.LOG_ERROR) |
||||||
|
elif (byte == KISS.ERROR_INITRADIO): |
||||||
|
self.log(str(self)+" hardware TX error (code "+RNS.hexrep(byte)+")", RNodeInterface.LOG_ERROR) |
||||||
|
else: |
||||||
|
self.log(str(self)+" hardware error (code "+RNS.hexrep(byte)+")", RNodeInterface.LOG_ERROR) |
||||||
|
elif (command == KISS.CMD_READY): |
||||||
|
# TODO: add timeout and reset if ready |
||||||
|
# command never arrives |
||||||
|
self.process_queue() |
||||||
|
|
||||||
|
else: |
||||||
|
time_since_last = int(time.time()*1000) - last_read_ms |
||||||
|
if len(data_buffer) > 0 and time_since_last > self.timeout: |
||||||
|
self.log(str(self)+" serial read timeout", RNodeInterface.LOG_DEBUG) |
||||||
|
data_buffer = "" |
||||||
|
in_frame = False |
||||||
|
command = KISS.CMD_UNKNOWN |
||||||
|
escape = False |
||||||
|
sleep(0.08) |
||||||
|
|
||||||
|
except Exception as e: |
||||||
|
self.online = False |
||||||
|
self.log("A serial port error occurred, the contained exception was: "+str(e), RNodeInterface.LOG_ERROR) |
||||||
|
self.log("The interface "+str(self.name)+" is now offline.", RNodeInterface.LOG_ERROR) |
||||||
|
|
||||||
|
def log(msg, level=3): |
||||||
|
if self.loglevel >= level: |
||||||
|
timestamp = time.time() |
||||||
|
logstring = "["+time.strftime(logtimefmt)+"] ["+self.loglevelname(level)+"] "+msg |
||||||
|
|
||||||
|
if (logdest == LOG_STDOUT): |
||||||
|
print(logstring) |
||||||
|
|
||||||
|
def loglevelname(level): |
||||||
|
if (level == RNodeInterface.LOG_CRITICAL): |
||||||
|
return "Critical" |
||||||
|
if (level == RNodeInterface.LOG_ERROR): |
||||||
|
return "Error" |
||||||
|
if (level == RNodeInterface.LOG_WARNING): |
||||||
|
return "Warning" |
||||||
|
if (level == RNodeInterface.LOG_NOTICE): |
||||||
|
return "Notice" |
||||||
|
if (level == RNodeInterface.LOG_INFO): |
||||||
|
return "Info" |
||||||
|
if (level == RNodeInterface.LOG_VERBOSE): |
||||||
|
return "Verbose" |
||||||
|
if (level == RNodeInterface.LOG_DEBUG): |
||||||
|
return "Debug" |
||||||
|
if (level == RNodeInterface.LOG_EXTREME): |
||||||
|
return "Extra" |
||||||
|
|
||||||
|
def __str__(self): |
||||||
|
return "RNodeInterface["+self.name+"]" |
||||||
|
|
||||||
Loading…
Reference in new issue