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cdc-wdm support now added in AOSP Hikey

Posted by on Set 11, 2017 in Android, AOSP, Linux, MBIM, QMI, USB | 0 comments

Recently I was trying to use my QMI and MBIM based modems in AOSP, with no luck: no cdc-wdm device was available in /dev/ after modem plugging, apparently without any kernel error. First guess was lack of cdc-wdm device driver in my kernel build, but, after checking, that was not the issue, since the network interfaces of the modem were properly created....

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CDC ACM GET LINE CODING request in Linux

Posted by on Ago 18, 2017 in development, kernel, Linux, USB |

Recently I was looking for a way to verify if CDC ACM GET LINE CODING request was working properly on a specific modem, since a customer was reporting an issue with it. In document “USB Communication Class Subclass Specification for PSTN Devices” GET LINE CODING is described as following (paragraph 6.2.2, Table 11): “Requests current DTE...

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Telit plugin improvements in ModemManager

Posted by on Giu 26, 2017 in kernel, Linux, MBIM, ModemManager, Telit | 1 comment

In the past few months a lot of development happened recently in ModemManager, both new features and bugfixings. As usual I will mainly focus on the changes that affect Telit plugin, but I suggest to take a look log at the whole git log since there is a lot more. Telit plugin new features A short list of new features: Telit RS232 modem supports, mandatory...

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Telit LE922 rmnet and MBIM support added in Linux kernel

Posted by on Dic 29, 2016 in development, kernel, Linux, MBIM, ModemManager, Telit |

Telit LE922 rmnet and MBIM support has been recently added in Linux kernel. Telit LE922 product series key features: LTE data rates in 4G networks up to 300 Mpbs downlink and 50Mbps in uplink. Carrier aggregation up to 40MHz bandwidth, both intraband and interband, and MIMO 2×2 Multiple regional variants to support the various bands (FDD/TDD) and band...

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Telit GE910 support added into ModemManager

Posted by on Ott 23, 2016 in Android, AOSP, development, kernel, Linux, ModemManager, RIL, Telit |

A few weeks ago Telit GE910 support has been added into ModemManager (mm-1-6 branch and master). The GE910 is a 2.5G cellular module (4 Bands GSM | GPRS: 850 / 900 / 1800 / 1900 MHz, GPRS class 10) designed to be fully compatible with Telit’s HSPA and EV-DO products, using the same connector-less xE910 unified form factor family. Telit GE910 is avaliable...

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Hikey 96: how to enable phone feature in Android 6

Posted by on Set 4, 2016 in Android, AOSP, development, Linux |

I finally received my Hikey 96 board from Lemaker and I’m currently in the process of adding the phone feature to the AOSP build: let’s see how easy it will be… The Hikey 96 Board The HiKey board was the first board to be certified 96Boards Consumer Edition compatible: mine is the one from Lemaker. If you are wondering what 96Boards...

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