I have one GSM Modem Series 900. I want to test it for sending and receiving message to mobile. I can connect with this modem, but when I put my SIM Card and I type AT command like here:
AT: Status "OK"
AT+CPIN?: Status "+CPIN: PH-NET PIN"
AT+CPIN="xxxx": Status "Error"
I don't know why it can't connect with the SIM Card. So do you any solution to help me on this problem?
Thanks,
Sopolin
HI,
Check the end of this thread:
http://www.mail-archive.com/smartphones-standards#linuxtogo.org/msg00052.html
It seems that your modem is locked on a network, you´ll have to unlock it.
Is it second-hand or does it come from another country?
It seems that there are a lot of answers just searching for "+CPIN: PH NET PIN"
Related
I tried to flash an ESP32 but I didn't succeed, I tried with esptool.py and Arduino IDE. I tried to press the boot button and reset but it didn't work. Here is the error:
A fatal error occurred: Failed to connect to ESP32: Timed out waiting for packet header
If using the Arduino IDE, try lowering the upload speed (Tools/Upload Speed). Lowering mine from 921600 to 460800 did the trick.
First ensure that you are in download mode:
Start the serial monitor and set the speed (mine is 115200).
While pressing the "boot" button, press and release the "en" button (your buttons may be labeled differently).
You should see something like this on the serial monitor:
waiting for download
Now start the upload
My development machine, a 2013 iMac is connected via USB to the USB-c port on my ESP32 Dev Module. Apparently the iMac's USB or ESP32 board's USB cannot keep up at the 921600 upload speed.
DISCLAIMER! May not be correct answer but may help to save time for someone.
Quick answer if you do not want read my experience: Disconnect all wires from pins and try uploading again! It may help.
I came across with the same error and could not figure it out. I first thought that something is wrong with the code, because it happened after I edited working code while figuring out where to connect what pin 😀. I also wasn't able to upload simple HelloWorld after it happened with connected wires. But then I disconnected all my wires from the board and the upload works fine.
I can not figure out the WHY factor but I think it must had been the input/data pin I was using, in my case D13. I have the DevKit with fewer pins. Maybe someone can comment why connected pins may make the error come up?
To make your ESP32 board go into flashing/uploading mode automatically, you can connect a 10 μF electrolytic capacitor between the EN pin and GND. When I had the same problem, when I followed this advice, the problem was solved.
References
Failed to connect to ESP32: Timed out waiting for packet header
espressif/arduino-esp32 - issue
On some AliExpress-like ESP32s you have to press the boot button in order to upload your sketch.
If you are watching the Arduino IDE console ouput and Connecting ... appears, you have to press the boot button for approximately 2 seconds until the console output changes.
Try to do this one after the other
Press the boot button when press uploading button until it write the code.
Try disconnect esp32 from the board/header/pcb that you are using right at the time.
Disconnect any other connection that your esp32 might have.
Do not connect to anything even your hand if possible.
Try put it in something that doesnt have a moist surface. look pic number 3.
MY CASES(30 pin version):
Case 1: I dont know why. I was connecting the pin to a female header it doesnt work and sometimes it just work like that. look pic number 1.
Case 2: when Im holding esp32 on my hand sometimes it wont work then i put it on my table and another time it doing well.
Case 3: pressing boot button when uploading it helped sometimes, and the other time it just work like it should.
Case 4: when it connected to pcb its simply just wont work, but when disconnected boom it work like nothing ever happen. look pic number 2.
Maybe just maybe something with capacitive or something like that (just assuming because number Case 1). hope that will help you out.
pic 1pic 2pic 3
This technique definitely working
Goto Tools > programmer, Select ISP and Upload Your Code.
if you can't see any programmer, then download 1.8.12 version.
https://www.arduino.cc/en/software/OldSoftwareReleases
With Arduino IDE
Make sure the Com port is selected under Tools menu. My experience with ESP32 is Com 5.
If it is not available as an option, try changing USB ports and/or re-select Tools - Board - ESP32 dev module.
Watch the "Compiling Sketch" window.
Press the "Boot" button as soon as you get the red message "Serial port Com 5" You can release the button as soon as it starts to upload.
If this doesn't work,try plugging into another USB port.
The Reset button only resets the uploaded sketch to re-initialise and has nothing to do with the uploading.
Install expressif.exe and port drivers,connect the port and flash the esp32 ,upload the code using ardiuno,solve the error
in my case buttons are new but not shorting properly as multimeter showed ..opened both scratched resoldered and all working
Changing by upload speed from 921600bps to 115200bps fixed it. No need to press any buttons.
Just download the drivers x)
CP210x: CP210x USB to UART Bridge VCP Drivers
FTDI: FTDI Virtual COM Port Drivers
I'm using a LTE Module QUECTEL EC20 of this model connected to my Arduino as software Serial monitor and AT Commands directly, I can communicate perfectly with the Module, I get answer OK, Signal, IMEI, and a lot of commands with any problem.
Quectel ec20
I have tone and I can answer the incoming call with ATA or hang up a call.
I'have tried changing the baud rate from 115200 to 19200 and 9600
I check all these commands:
AT+CLIP=1
AT+CREG=1
AT+COPS?
Everything look perfect but I dont get incomming data in my serial when I call or send a sms.
I have experience with SIM800, SIM5320, SIM7600 of SIMCOM brand working perfectly, But this is my first time trying this model and I have a lot of 5, I tried with all.
I have like one week looking information and trying but without success.
Thanks in advance.
Finally I had to contact to QUECTEL support and they responded very kindly and fast.
They suggest to add this at command to change the port of data delivery.
at+qurccfg="urcport","uart1"
after that! finally it start working perfectly. If any need extra help please contact me. Thanks
I'm working on an Arduino Uno + ESP8266 project.
I try to use them as a web server on Wi-Fi network to control a motor that connects to Arduino - basically a trigger system that receives signals via Wi-Fi. Currently, I've successfully connected ESP8266 to my access point by sending AT commands from Arduino. Another client on the same network can statically access ESP8266's assigned IP address.
However, when I try to catch some HTTP queries (I want to use them as conditions to control the motor) I occasionally encountered the non-ASCII characters in HTTP request. I use serial comm to debug, please look at the screenshot in the link below:
Arduino - Computer serial communication for debugging
The line ",519:POST ..." should contain a complete number following "/?", but there's some strange characters instead. So I cannot determine the input data to control motor. Once in a blue moon, the expected format of request shows up as follows:
The correct data received
There's no issue with the HTTP response part, even though I got the uninterpretable request, I can still send the JSON error message back to client.
Attempt Note:
The Arduino uses different serial ports to talk to computer and ESP8266. Since the connection can be established, and the data being sent, I believe that the baud rate is simply correct on both side. (115200 for ESP8266, 9600 for computer - also tried 115200 for both and got the same result)
I use V3.3 from Arduino as power source for ESP8266. But I also use voltage regulator to smooth out the current as many people suggest that. The problem still remains.
I'm struggled with this issue for a few days, just want to know if anybody had the similar experience, or could give some clue for the next step.
After a considerable effort to stabilize the circuit, I switched to NodeMCU and got the system working perfectly. I assume that ESP8266 alone is somehow not robust enough without other components, which I unfortunately have no knowledge on.
So I'd like to close this thread with a short recommendation for anybody struggling with the same issue to switch to NodeMCU (which would replace both Arduino and ESP8266); if that could support the requirement.
I am using Prolink PSH300 HSUPA GSM Modem connect to my laptop and using tera term to test the connect.
First I entered AT it will response me OK
AT
OK
AT+CMGF=1
OK
AT+CMGS="+6581XXXXXX" (then I pressed enter error was returned)
ERROR
Sometime it won't return me error but just hang there no > return.
Could anybody advise me what to do?
In your port initialization I would suggest you add these two lines-
port.DiscardOutBuffer();
port.DiscardInBuffer();
These will do a PurgeComm native WIN32 call, that will be resetting the hardware flow control lines.
Also add DtrEnable/RtsEnable = true lines to before opening the port connection.
Scenario: My nokia mobile conected to pc over bluetooth link.
commands: at (result ok), at+Cmgf=1(ok), but at+cmgs="mob.no">"hello"ctrl+z (result +cms error 500). I solved it by making a small change to extra initialisation setting in bluetooth modem. How, i explain here.
conrol panel -> phone and modem -> selected the blue tooth modem -> click properties. In the dialog window that opens goto advance tabs and change the existing extra initialisation commands: from whatever existed to any of the following as mentioned in the website below:
cksaheb.blogspot.in/2011/03/extra-initialization-command-for-gprs.html. My problem for sending sms solved.
I have the same problem. you must check antena connection.
Your GSM can't fine the network.
I'm trying to establish a PPP connection using pppd and AT Commands. This usually works fine with a SIM card of my local provider. However, I received a card from a friend that is living in Germany and I wanted to give it a try from Switzerland but I have a very strange behavior.
First I cannot activate the error message (AT+CMEE), I always get the error message "ERROR" despite I activated the full verbose previously (AT+CMEE=2). This commands works with my local provider SIM card ...
Then if I check the network status:
AT+CGREG?
+CGREG: 1,3
Believing the "3", this means "Registration denied".
When I try to attach or detach, I always have an error without more explanation (Despite AT+CMEE=2):
AT+CGATT=0
ERROR
AT+CGATT=1
ERROR
AT+CGATT?
+CGATT: 0
OK
I can send SMS with AT commands! Putting the SIM card in a phone, I cannot establish any call!
So is it possible to send SMS without the need to register to the network? Is it possible that error message reporting is deactivated on the SIM card? I'm wondering if this is a problem of configuration, a problem of the SIM card or a problem of provider...
Edit
If this could help someone. I tried to send an SMS when I'm detached from the network with my working SIM card, it works! Believing this website I guess my friend didn't pay the bill or my local network provider refuses me to use its network ...
Probably roaming of circuit switched data (GSM) is allowed. And roaming of GPRS service is not allowed.
AT+CGREG? returns status of GPRS registration.
AT+CREG? returns status of network registration (GSM/UMTS).
Try command:
AT+CREG?
It probably will return 5 (Registered, roaming).
SMS message sending works because it does not need GPRS. Attach and +CGREG stuff are all for GPRS.