<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <meta name="Generator" content="Microsoft Word 15 (filtered medium)"> <style></style> </head> <body lang="ZH-CN" link="blue" vlink="purple"> <div class="WordSection1"> Hi<o:p></o:p> Recently I met an issue of the mismatched result from mmcli and at commands, details are below.<o:p></o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> Thanks,<o:p></o:p> Kevin<o:p></o:p> <o:p> </o:p> 发件人: Aleksander Morgado [mailto:aleksander@aleksander.es] 发送时间: 2020年8月14日 16:27 收件人: Kevin.Lee(李家玮) <kevin.lee@fibocom.com> 主题: Re: Inquiry about some details about ModemManager for the mismatch between "mmcli -m index" and at command result<o:p></o:p> <o:p> </o:p> <div> Hey<o:p></o:p> <div> <o:p> </o:p> </div> <div> Please send your questions to the public ModemManager mailing list address, so that everyone can read those questions and the replies.<o:p></o:p> </div> <div> <o:p> </o:p> </div> <div> Thanks!<o:p></o:p> </div> </div> <o:p> </o:p> <div> <div> On Fri, 14 Aug 2020, 03:35 Kevin.Lee(李家玮), <<a href="mailto:kevin.lee@fibocom.com">kevin.lee@fibocom.com</a>> wrote:<o:p></o:p> </div> <blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm"> <div> <div> Dear Aleksander,<o:p></o:p> <o:p></o:p> Sorry for that, I need to correct my saying in last e-mail.<o:p></o:p> In code I found this value was set to ‘MM_MODEM_STATE_REGISTERED’ in function ‘update_regeistration_reload_current_registration_info_ready’. And I found this parameter will block modem state transfering to other states. Could you please kindly make some explain on this?<o:p></o:p> <o:p></o:p> <o:p></o:p> Thanks,<o:p></o:p> Kevin<o:p></o:p> <o:p></o:p> <div> <div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm"> 发件人: Kevin.Lee(李家玮) 发送时间: 2020年8月13日 11:12 收件人: <a href="mailto:aleksander@aleksander.es" target="_blank">aleksander@aleksander.es</a> 主题: Inquiry about some details about ModemManager for the mismatch between "mmcli -m index" and at command result<o:p></o:p> </div> </div> <o:p></o:p> Dear Aleksander,<o:p></o:p> <o:p></o:p> I hope this e-mail finds you well.<o:p></o:p> My name is Kevin, working in fibocom. Recently I got some confusion during the time handling with some ModemManager issues.<o:p></o:p> The modem I use is a Fibcom L860-GL on a Lenovo PC, on which I found when I type in “mmcli –m index” to query the information of modem. However, I found the result from mmcli and at is different, the picture is shown below.<o:p></o:p> <img border="0" width="1117" height="556" id="m_8448329944427282411图片_x0020_2" src="cid:image002.jpg@01D67162.96179570" alt="image.png"><o:p></o:p> <o:p></o:p> As we can tell, modem state from this two ways are mismatched. After reviewing the code, I found that there is a function called “get_current_consolidated_state” in mm-iface-modem.c which will build a consolidated state. The parameter “modem_state” passed in is ‘enabled’, which matched with the actual modem state after sending at command “at+cops=2” to unregister from network. Based on my understanding,this consolidated_state was technically meant to match with the state reported from subsystem, in code I found this value was set to ‘MM_MODEM_STATE_CONNECTED’ in function ‘update_regeistration_reload_current_registration_info_ready’. So my questions are:<o:p></o:p> 1. Is this phenomena ( results from at command and mmcli are different) a special design in order to compatible with different ‘subsystem’?<o:p></o:p> 2. I’m not very clear with the concept of ‘subsystem’, and I failed to find any description about it in the document. So could you kindly provide me some guidance?<o:p></o:p> <o:p></o:p> Your answers will be very helpful and I appreciate a lot!<o:p></o:p> <o:p></o:p> <o:p></o:p> Kind Regards,<o:p></o:p> 李家玮 Kevin<o:p></o:p> MBB PDU软件三部 Mobile Broadband Product Development Dept. | 软件工程师 Software Engineer<o:p></o:p> M：+86 15091286061<o:p></o:p> Add：西安市高新区软件新城天谷八路156号云汇谷C3座1602室丨<a href="http://www.fibocom.com/" target="_blank">www.fibocom.com</a><o:p></o:p> 西安广和通无线软件有限公司<o:p></o:p> <img border="0" width="380" height="47" id="m_8448329944427282411图片_x0020_1" src="cid:image001.png@01D670EA.EE13C6E0" alt="1"><o:p></o:p> <o:p></o:p> </div> </div> </blockquote> </div> </div> </body> </html>