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IoT.js supports two build types:
IoT.js officially supports Raspbian. For more information, please visit the official site.
To use I2C module, the I2C interface must be enabled.
From the command line type:
sudo raspi-config
This will launch raspi-config utility.
The screen will ask you to enable I2C interface.
Reboot your Raspberry Pi.
Raspberry Pi2 has two PWM outputs on the following pins.
PWM Number | GPIO PIN(FUNC) |
---|---|
PWM0 | GPIO12(4), GPIO18(2) |
PWM1 | GPIO13(4), GPIO19(2) |
To use PWM module, you must add PWM overlays in /boot/config.txt
file.
For example, to get a single PWM on GPIO18, add overlays like below.
dtoverlay=pwm,pin=18,func=2
For example, to get multi PWM on GPIO18 and GPIO19, add overlays like below.
dtoverlay=pwm-2chan,pin=18,func=2,pin2=19,func2=2
For more information about overlays, refer to README.
To use UART module, the UART interface must be enabled.
In /boot/config.txt
file, change the value of enable_uart from 0 to 1.
enable_uart=1
To disable the serial console, edit the file /boot/cmdline.txt
.
remove the word phase "console=serial0,115200"
or "console=ttyAMA0,115200"
To enable the serial console, edit the file /boot/cmdline.txt
.
add the word phase "console=serial0,115200"
or "console=ttyAMA0,115200"
Reboot your Raspberry Pi.
Install arm linux cross compiler.
sudo apt-get install gcc-arm-linux-gnueabihf
Install arm linux cross compiler via this site.
The default location for arm linux compiler toolchain is “/usr/local/linaro/arm-linux-gnueabihf-raspbian”.
Then you need to locate c_compiler. In ”./cmake/config/arm-linux.cmake”,
SET(EXTERNAL_CMAKE_C_COMPILER
/usr/local/linaro/arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf-gcc)
In ”./deps/libtuv/cmake/config/config_arm-linux.cmake”,
SET(CMAKE_C_COMPILER
/usr/local/linaro/arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf-gcc)
Give target-arch
, target-os
and target-board
options to the script named ‘build.py’, then the script do the rest for you.
./tools/build.py --buildtype=[release|debug] --target-arch=arm \
--target-os=linux --target-board=rpi2
This script gives you build/arm-linux/release/bin/iotjs
or build/arm-linux/debug/bin/iotjs
.
Copy this binary with your favorite tool or scp
like below.
scp build/arm-linux/release/bin/iotjs pi@(your RPi2 IP):/home/pi/.
Lastly, open a shell and run with your test program.
ssh pi@(your RPi2 IP)
./iotjs (your test program)
Install cmake.
sudo apt-get update
sudo apt-get install cmake
Executing below command will build IoT.js and run our testsuite.
./tools/build.py --target-board=rpi2