rssi - Trying to use the AT command with an Huawei E3531 -

i want read rssi of huawei e3531. found documentations show easy way informations using @ command. problem can't connect huawei e3531. mean, works modem. have connection. when looking device in dev, find 2 devices ("sdb" , "sgm") seem 2 disc, nothing serial port.

so tried somethin found: -after plugged huawei, find idvendor , idproduct doing lsusb. -they sudo modprobe usbserial vendor=0x"idvendor" product=0x"idproduct" -and when dmesg can read:

[ 1038.498282] usbcore: registered new interface driver usbserial [ 1038.498299] usbcore: registered new interface driver usbserial_generic [ 1038.498312] usbserial: usb serial support registered generic 

normally should have like:

usb 1-1: generic converter attached ttyusb0 

i think have not possible see sdb , sgm mac, doing ubuntu. , if enable wifi, modem cannot connect ( not see sdb , sgm)

if need here first part of dmesg:

[  742.756888] usb 3-1: usb disconnect, device number 6 [  743.123706] usb 3-1: new high-speed usb device number 7 using xhci_hcd [  743.252854] usb 3-1: new usb device found, idvendor=12d1, idproduct=14dc [  743.252861] usb 3-1: new usb device strings: mfr=1, product=2, serialnumber=0 [  743.252865] usb 3-1: product: huawei mobile [  743.252868] usb 3-1: manufacturer: huawei [  743.482312] cdc_ether 3-1:1.0 usb0: register 'cdc_ether' @ usb-0000:00:14.0-1, cdc ethernet device, 9a:c2:9b:ee:4c:d9 [  743.482859] usb-storage 3-1:1.2: usb mass storage device detected [  743.483249] scsi11 : usb-storage 3-1:1.2 [  743.520839] audit: type=1400 audit(1427889713.269:79): apparmor="denied" operation="file_inherit" profile="/usr/lib/networkmanager/nm-dhcp-client.action" pid=3414 comm="nm-dhcp-client." lport=29180 family="inet" sock_type="dgram" protocol=17 [  743.520857] audit: type=1400 audit(1427889713.269:80): apparmor="denied" operation="file_inherit" profile="/usr/lib/networkmanager/nm-dhcp-client.action" pid=3414 comm="nm-dhcp-client." lport=47709 family="inet6" sock_type="dgram" protocol=17 [  744.481267] scsi 11:0:0:0: direct-access     huawei   tf card storage  2.31 pq: 0 ansi: 2 [  744.481722] sd 11:0:0:0: attached scsi generic sg2 type 0 [  744.482933] sd 11:0:0:0: [sdb] attached scsi removable disk [  753.752310] audit: type=1400 audit(1427889723.496:81): apparmor="denied" operation="file_inherit" profile="/usr/lib/networkmanager/nm-dhcp-client.action" pid=3423 comm="nm-dhcp-client." lport=29180 family="inet" sock_type="dgram" protocol=17 [  753.752328] audit: type=1400 audit(1427889723.496:82): apparmor="denied" operation="file_inherit" profile="/usr/lib/networkmanager/nm-dhcp-client.action" pid=3423 comm="nm-dhcp-client." lport=47709 family="inet6" sock_type="dgram" protocol=17 [ 1038.498282] usbcore: registered new interface driver usbserial [ 1038.498299] usbcore: registered new interface driver usbserial_generic [ 1038.498312] usbserial: usb serial support registered generic 

thank again, if can give me small idea, take it! see soon

edit 9/04/2015 found something. lsusb see device as:

bus 003 device 020: id 12d1:1f01 huawei technologies co., ltd.

1f01 idproduct, can change sometime, because modem goes different mode on own. if 1f01, do:

sudo usb_modeswitch -v 12d1 -p 1f01 -m '55534243123456780000000000000011062000000100000000000000000000'  

this force device device change mode. device have idproduct iqual 1001. lsusb see it:

bus 003 device 023: id 12d1:1001 huawei technologies co., ltd. e169/e620/e800 hsdpa modem

and have 4 new usb dev: usb0, usb1, usb2 , usb3. going try minicom send @ command.

so basically, problem not see modem serial. explained how that, have force modem command:

sudo usb_modeswitch -v 12d1 -p 1f01 -m '55534243123456780000000000000011062000000100000000000000000000'

then tried minicom, nice, have connect using right parameters baud rate , port. , test. see writing in minicom, enable local echo (ctrl+a z option). can send information want.

but wanted integrate in python script here code:

def terminalcomandread(a,b) :     found = false     proc = subprocess.popen([a], stdout=subprocess.pipe, shell=true)#send command     (out, err) = proc.communicate()     string=str(out)     #print(string)     foundstring=string.find(b, 0, len(string))#look string b in serial answer of device     if foundstring != -1 :         found= true #send true if found     return found  def send(data,ser):     try:         ser.write(data)#write command serail port     except exception e:         print "couldn't send data serial port: %s" % str(e)     else:         try:             sleep(1)             data = ser.read(1)#read serial         except exception e:             print "couldn't read data serial port: %s" % str(e)         else:             if data:  # if data = none, timeout occurr                 n = ser.inwaiting()                 if n > 0: data += ser.read(n)                 return data  def searchmodem():      foundmob= false     foundusb= false      sudopassword='figaro5558_'#my sudo password     command="usb_modeswitch -v 12d1 -p 1f01 -m '55534243123456780000000000000011062000000100000000000000000000'" # command ce modem on serial mode     while foundusb!= true : # allows me modem usb , force          foundmob=terminalcomandread("lsusb",'12d1:1f01')#doing ls usb , looking id of device         changemob=terminalcomandread("lsusb",'12d1:1001')#this id of device when in serial mode          if foundmob == true :             sleep(1)             os.system('echo %s|sudo -s %s' % (sudopassword, command))# line execute command on sudo              foundusb=terminalcomandread("ls /dev/ttyusb*",'ttyusb1')           if changemob == true :             foundusb=terminalcomandread("ls /dev/ttyusb*",'ttyusb1')          if foundusb == true :                 print('modem ready connection')      ttyusb0=terminalcomandread('dmesg | tail -50','now attached ttyusb0') #look int dmesg if there new usb port      if ttyusb0 == true :         usbport='/dev/ttyusb0'#give path       return usbport  ser = serial.serial(usbport, 9600, bytesize=8, parity='n', stopbits=1, timeout=1, rtscts=false, dsrdtr=false) #connect serial  cmd="at^hcsq?\r\n"#the @ command msg=str(send(cmd,ser))#use send function send @ command print(msg) 

so worked me, hope you! cheers