at-command

I want to read the RSSI of my Huawei E3531. So I found some documentations that show an easy way to get those informations using the AT command. The problem is that I can't even connect to my Huawei E3531. I mean, it works really well as a modem. I have a good connection. But when I am looking for the device in dev, I just find 2 devices ("sdb" and "sgm") which seem to be 2 disc, but nothing to do with serial port. So I tried somethin I found: -After I plugged the Huawei, I find the Idvendor and Idproduct doing an lsusb. -They I do a sudo modprobe usbserial vendor=0X"Idvendor" product=0X

Can anyone help me with the AT command to write characteristic value, Or how to send data from arduino to another ble device using Hm10 module. The HM10 after sending the AT+START, does advertise packets, and can detect the service and characteristic, But the characteristic value is the default 0x00, How can I change that? Have checked the data sheet multiple times but can not find an AT command that is capable of doing the same. UPDATE: Similar problem with setting the HM10 in Central Mode: Central Mode Setup! 1) AT+ROLE1 - Set up to Central Mode 2) AT+IMME1 - Start from RESET 3) AT+SHOW1 -

I'm stumped with sending data to a remote server , I'm able to send a post request but not sure how to add data which is then received by the server. I've went through the datasheet http://www.jarzebski.pl/datasheets/SIM900_https-121018-1.00.pdf tried # usual at+sapbr=1,1 set up +HTTPINIT +HTTPPARA = “CID”,1 +HTTPPARA="URL","IP-ADDRESS:PORT" +httpdata=100,10000 # Where do I add the post data ? +httpaction=1 which sends the http post request. But how do I add data - I've tried adding it to the url ?key=val but no joy - any help here will be appreciated httpdata=100,10000 means that SIM800

I am trying to do the following I am getting a call to another person using my java application (Already done & works fine). Then I am playing a recording, for example "Please press 1 one to continue in english" (Already done & works fine). Now I want to detect that person press one, As per my researches in google search I got that this can do using DTMF.If the person press 1 I want to do the actions according to my condition. My question is how to detect that number using DTMF in java (J2SE). I am using ZTE USB dongle to make the call. Dialing, Hangup, And other controls did by using AT

I'm having trouble sending commands to a 3G modem connected on COM5. The modem is accepting the connection and receiving the commands. But there is something wrong (I think it is in my syntax/AT commands). In hyperterminal the commands are returning errors. If anyone can help I would gladly appreciate it. -------CODE BELOW------- <? exec("mode COM5 BAUD=9600 PARITY=N data=8 stop=1 xon=off"); $fp = fopen ("\\.\COM5:", "r+"); //$fp = dio_open('COM5:', O_RDWR | O_NOCTTY | O_NONBLOCK); if (!$fp) { echo "Uh-oh. Port not opened."; } else { $string = "AT+CMGF=1"; $string = $string."OK"; $string =

I have looked all over the net for a good library to use in sending and receiving sms's using python but all in vain! Are there GSM libraries for python out there? Have you looked at py-sms ? Python-binding for Gammu perhaps? BTW. It's GUI version ( Wammu ) is written in wxPython. I have recently written some code for interacting with Huawei 3G USB modems in python. My initial prototype used pyserial directly, and then my production code used Twisted's Serial support so I can access the modem asynchronously. I found that by accessing the modem programatically using the serial port I was able

I have a GSM modem connected to my computer, i want to receive text messages sent to it using a python program i have written, am just wondering what is the best technique to poll for data. Should i write a program that has a infinite loop that continuously checks for incoming sms's i.e within the loop the program sends the AT commands and reads the input data. or do modems have a way of signaling an application of an incoming data(sms). Am trying to imagine a cellphone is just a GSM modem, and when an sms is received, the phone alerts you of the event, or does the phone software have an