Example LimeRFE WSRP PTT control script

limeRFE_ptt.py

import ctypes
from ctypes import *
import sys
import os
import time
import datetime

import limeRFE_H as LH

libLimeSuite = ctypes.cdll.LoadLibrary('/usr/local/lib64/libLimeSuite.so')

baudrate = 9600

# Open port
fd = libLimeSuite.LIMERFE_Open(c_char_p(b"/dev/ttyUSB0"), c_int(baudrate));    

if (fd == -1):
    print(stderr, "Error initializing serial port\n")
    exit(1)

cinfo = (c_ubyte*4)()
print("Port opened; fd =", fd)

# Configure LimeRFE to use channel HAM 2m channel in receive mode.
# Transmit output is routed to TX output. Notch is off. Attenuation is 0.
#libLimeSuite.LIMERFE_Configure(c_int(LH.LIMERFE_USB), c_int(0), c_int(0), c_int(fd), c_int(LH.CID_HAM_0030), c_int(LH.TX2TXRX_INDEX_TX), c_int(LH.NOTCH_VALUE_OFF), c_int(0))

#time.sleep(1.0)

# Change mode to transmit
#libLimeSuite.LIMERFE_Mode(c_int(LH.LIMERFE_USB), c_int(0), c_int(0), c_int(fd), c_int(LH.RFE_MODE_TX))

while True:
    t = datetime.datetime.utcnow()
    s = t.minute * 60 + t.second
    x = s % (4 * 60)
    print(t.isoformat())
    if x > 4 * 60 - 3 or x < 2 * 60:
        print('PTT on')
        libLimeSuite.LIMERFE_Mode(c_int(LH.LIMERFE_USB), c_int(0), c_int(0), c_int(fd), c_int(LH.RFE_MODE_TX))
    else:
        print('PTT off')
        libLimeSuite.LIMERFE_Mode(c_int(LH.LIMERFE_USB), c_int(0), c_int(0), c_int(fd), c_int(LH.RFE_MODE_RX))
    time.sleep(1.0)

#time.sleep(1.0)

# Reset LimeRFE
#libLimeSuite.LIMERFE_Reset(c_int(fd))

# Close port
libLimeSuite.LIMERFE_Close(c_int(fd))