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Quectel_EC2x_QuecOpen_Examples

This is QuecOpen examples for Quectel EC2X modules

Requirements

In order to play with samples, there are some consumptions:

  • EC2X QuecOpen SDK from your local Quectel contact
  • Ubuntu machine running LTS Ubuntu 14.04 or 16.04 or 18.04
  • EC2X module is flashed with firmware which is same prefix name with the SDK number. In this guide, I will use EC21EFAR06A01M4G_OCPU_BETA1112_01.001.01.001_SDK.tar.bz2 for SDK and base FW EC21EFAR06A01M4G_OCPU_BETA1112_01.001.01.001.zip
  • Able to use ADB to communicate with the module

Clone the repo

Clone the repo with --recursive param, so it could also clone the submodule:

git clone --recursive https://github.com/ngohaibac/Quectel_EC2x_QuecOpen_Examples.git
cd Quectel_EC2x_QuecOpen_Examples

Preparation

Step 1: Upgrade base firmware

In order to work with QuecOpen, the module needs to be flashed with QuecOpen base firmware EC21EFAR06A01M4G_OCPU_BETA1112_01.001.01.001.zip.

Note: the SDK and the base firmware must be matched

  • Base firmware: EC21EFAR06A01M4G_OCPU_BETA1112_01.001.01.001.zip
  • SDK: EC21EFAR06A01M4G_OCPU_BETA1112_01.001.01.001_SDK.tar.bz2

Step 2: Install driver and extract SDK

  1. Install driver and test ADB

Suggested dev environment is: Ubuntu LTS 18.04 or 16.04.

In order to support all futher Quectel modules, it is suggested to install drivers and configure the system to recognize ADB port. Follow the instruction in folder `Quectel_Module_ADB_Issue'. This is the most important step.

Now, you should see the device with command: adb devices, and also see 4 serial ports:

  • /dev/ttyUSB0 - DM port for upgrade firmware and get the device log
  • /dev/ttyUSB1 - get NMEA message output
  • /dev/ttyUSB2 - for AT command communication
  • /dev/ttyUSB3 - for PPP connections or AT communication

You also able to login to the device using:

adb shell
  1. SDK Copy the SDK and extract:
cp /path/EC21EFAR06A01M4G_OCPU_BETA1112_01.001.01.001_SDK.tar.bz2 .
tar xjvf EC21EFAR06A01M4G_OCPU_BETA1112_01.001.01.001_SDK.tar.bz2

Folder structure:

tree -L 2
.
|-- EC21EFAR06A01M4G_OCPU_01.001.01.001.zip
|-- EC21EFAR06A01M4G_OCPU_01.001.01.001_SDK.tar.bz2
|-- Quectel_EC2x_QuecOpen_Examples
|   |-- HelloWorld
|   |-- LICENSE
|   `-- README.md
`-- ql-ol-sdk
    |-- Makefile
    |-- ql-ol-crosstool
    |-- ql-ol-extsdk
    |-- ql-ol-kernel
    |-- ql-ol-rootfs.tar.gz
    `-- ql-ol-usrdata

In order to prepare cross platform environment, please execute this before each build session.

source ql-ol-sdk/ql-ol-crosstool/ql-ol-crosstool-env-init

Step 3: Compile the example

Compile the source

Inside each folder, run bash script or cmake to create Makefile:

cd HelloWorld
sh build.sh

OR

cd HelloWorld
mkdir build
cd build
cmake ..
make

Result is in build/ folder.

Run and debug inside QuecOpen

Inside the build directory, copy the program into /usrdata

adb push HelloWorld /usrdata
adb shell

Inside the shell:

cd /usrdata
./HelloWorld

EC2x available resources and notes

Inside EC2x, chipset is Qualcomm 9x07 and application is running on the ARM-Cortex A7. There are 2 available libraries in QuecOpen:

  • Qualcomm dependent libs: located inside ql-ol-extsdk, which are provided by Quectel
  • Standard Linux dependent libs: follow the Linux standard with compiled binary files and header files are located in ql-ol-crosstool/sysroots/. If the application needs extra function which is not yet compiled, user could compile and put into the rootfs

Available resource:

  • RAM: 100MB
  • Flash: Root partition 100MB
  • User partiton: 100MB, is mouted under /usrdata

Current DTS has following peripheral info:

  • SPI6 - /dev/spi
  • I2C-2 - /dev/i2c-2
  • I2C-4 - /dev/i2c-4
  • UART-5 - /dev/ttyHSL1 (disabled by default)
  • UART-2 - /dev/ttyHSL0 (enabled by default; for debug port)
  • UART-6 - /dev/ttyHSL2 (disabled by default; with SPI)
  • UART-3 - /dev/ttyHS0 (enabled by default)

To communicate with the baseband core, use: /dev/smd8