Hi Sergei, Thanks for your response. Please find code I found from Internet attached, the same baud rate, serial port and AT command I can get response from minicom, but empty response from the boost serial port, I don't think it was the baud rate issue or option parameters issue, but I could be wrong. Appreciate if you could get it work. Thank you. Kind regards, - jh On 1/13/20, Sergei Nikulov wrote:

пн, 13 янв. 2020 г. в 12:12, JH via Boost :

...

Hi,

There are many boost serial port sample code out there, but none of them I can run AT command. I have a device connected to my ubuntu 18, I can run AT command on minicom to get correct response, but I could not get any AT response from boost serial port. Has anyone made it work?

Thank you.

Kind regards,

- jh

_______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost

Could you please show the code? Just guess, incorrect baud rate or other config parameters (ref. https://www.boost.org/doc/libs/1_72_0/doc/html/boost_asio/reference/basic_se...)

-- Best Regards, Sergei Nikulov

This is a top-post reminding people to please not top-post: https://www.boost.org/community/policy.html#quoting On 1/14/20 00:05, Sergei Nikulov via Boost wrote:

Hello JH

If SerialOptions defaults (parity, csize, flow, stop) are good for you

SerialOptions() : device(), baudrate(9600), timeout(seconds(0)), parity(noparity), csize(8), flow(noflow), stop(one) {}

<snip a bunch of top posting>

Hi, It looks going no way to get it work, I have to find a consultant for helping me to get it work, anyone interested, please contact me privately, I'll pay your full service if you could deliver me a working serial command source to run AT command. Thank you. Kind regards, - jh On 1/15/20, JH wrote:

Hi Sergei,

Thanks for your response.

On 1/14/20, Sergei Nikulov wrote:

...

Hello JH

If SerialOptions defaults (parity, csize, flow, stop) are good for you

Yes, I was using all defaults, that should work right?

...

SerialOptions() : device(), baudrate(9600), timeout(seconds(0)), parity(noparity), csize(8), flow(noflow), stop(one) {}

The only different was I set baudrate to 115200, I changed to use 9600, doesn't seem work either.

...

then try to add \r to the end of your AT command - serial<<"AT+CGDCONT?" << endl;. + serial<<"AT+CGDCONT?\r\n"; I did try to add "\r\n", no avail.

Hmm, did not realize boost serial port is that hard, any working boost serial port samples online?

Thank you.

Kind regards,

- jh

...

AFAIR, AT commands, use it as line end (ref https://en.wikipedia.org/wiki/Hayes_command_set), but on Linux std::endl only LF(0x0A). Maybe this is your case. HTH.

вт, 14 янв. 2020 г. в 02:34, JH :

...

Hi Sergei,

Thanks for your response.

Please find code I found from Internet attached, the same baud rate, serial port and AT command I can get response from minicom, but empty response from the boost serial port, I don't think it was the baud rate issue or option parameters issue, but I could be wrong.

Appreciate if you could get it work.

Thank you.

Kind regards,

- jh

On 1/13/20, Sergei Nikulov wrote:

...

пн, 13 янв. 2020 г. в 12:12, JH via Boost :

...

Hi,

There are many boost serial port sample code out there, but none of them I can run AT command. I have a device connected to my ubuntu 18, I can run AT command on minicom to get correct response, but I could not get any AT response from boost serial port. Has anyone made it work?

Thank you.

Kind regards,

- jh

_______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost

Could you please show the code? Just guess, incorrect baud rate or other config parameters (ref. https://www.boost.org/doc/libs/1_72_0/doc/html/boost_asio/reference/basic_se...)

-- Best Regards, Sergei Nikulov

-- Best Regards, Sergei Nikulov

вт, 21 янв. 2020 г., 10:22 Richard Hodges :

Hi Sergei.

I know for a fact that asio serial is objects work fine.

Please post a minimal complete program that demonstrates how you are using asio to communicate with the serial port.

The problem will certainly be there.

On Tue, 21 Jan 2020 at 01:59, JH via Boost wrote:

...

Hi,

It looks going no way to get it work, I have to find a consultant for helping me to get it work, anyone interested, please contact me privately, I'll pay your full service if you could deliver me a working serial command source to run AT command.

Thank you.

Kind regards,

- jh

On 1/15/20, JH wrote:

...

Hi Sergei,

Thanks for your response.

On 1/14/20, Sergei Nikulov wrote:

...

Hello JH

If SerialOptions defaults (parity, csize, flow, stop) are good for you

Yes, I was using all defaults, that should work right?

...

SerialOptions() : device(), baudrate(9600), timeout(seconds(0)), parity(noparity), csize(8), flow(noflow), stop(one) {}

The only different was I set baudrate to 115200, I changed to use 9600, doesn't seem work either.

...

then try to add \r to the end of your AT command - serial<<"AT+CGDCONT?" << endl;. + serial<<"AT+CGDCONT?\r\n"; I did try to add "\r\n", no avail.

Hmm, did not realize boost serial port is that hard, any working boost serial port samples online?

Thank you.

Kind regards,

- jh

...

AFAIR, AT commands, use it as line end (ref https://en.wikipedia.org/wiki/Hayes_command_set), but on Linux std::endl only LF(0x0A). Maybe this is your case. HTH.

вт, 14 янв. 2020 г. в 02:34, JH :

...

Hi Sergei,

Thanks for your response.

Please find code I found from Internet attached, the same baud rate, serial port and AT command I can get response from minicom, but empty response from the boost serial port, I don't think it was the baud rate issue or option parameters issue, but I could be wrong.

Appreciate if you could get it work.

Thank you.

Kind regards,

- jh

On 1/13/20, Sergei Nikulov wrote:

...

пн, 13 янв. 2020 г. в 12:12, JH via Boost : > > Hi, > > There are many boost serial port sample code out there, but none of > them I can run AT command. I have a device connected to my ubuntu

18,

...

...

> I can run AT command on minicom to get correct response, but I could > not get any AT response from boost serial port. Has anyone made it > work? > > Thank you. > > Kind regards,

Hello, Richard. I have no problems with serial ports. Could you please re-read whole email thread? You'll also find code from JH, who original topic starter. --

Richard Hodges hodges.r@gmail.com office: +442032898513 home: +376841522 mobile: +376380212

Hi Richard, On 1/22/20, Richard Hodges via Boost wrote:

On Tue, 14 Jan 2020 at 00:35, JH via Boost wrote:

...

Hi Sergei,

Thanks for your response.

Please find code I found from Internet attached,

On which serial device is your modem connected? The code indicates /dev/ttyUSB3 . Did you copy this or insert it because you know it to be correct?

Sorry for not being clear, the /dev/ttyUSB3 is a debug port for uBlox SARA EVK, I was able to use minicom to connect to /dev/ttyUSB3 and to get all AT command response.

If it's correct, what permissions are set on that device?

The permission was setting to only allow root access, so I ran both minicom and application in sudo, "sudo ./stream", if that is a problem, I'll change the access permision to user mode.

$ ls -l /dev/ttyUSB3 crw-rw---- 1 root dialout 188, 3 Jan 22 11:26 /dev/ttyUSB3

Thank you very much. Kind regards, - jh