NXP FreeRTOS BSP

The FreeRTOS BSP is for NXP’s i.MX SOC family with ARM Cortex-M4 core.

Support platform: pico-imx7d edm-imx7d

Download and install toolchain to compile FreeRTOS:

$: wget 'https://launchpad.net/gcc-arm-embedded/4.9/4.9-2015-q3-update/+download/gcc-arm-none-eabi-4_9-2015q3-20150921-linux.tar.bz2'
$: tar jxvf gcc-arm-none-eabi-4_9-2015q3-20150921-linux.tar.bz2

FreeRTOS relies on cmake to build, so you also need to make sure the following packages are installed on your machine:

$: sudo apt-get install make cmake

Export the environment of toolchain

$: export ARMGCC_DIR=${absolute_path}/gcc-arm-none-eabi-4_9-2015q3/

Then, you can start to compile the example you would like to run.

For example:

Build the hello_world application:

$: cd freertos-tn/examples/imx7d_pico_m4/demo_apps/hello_world/armgcc/
$: ./build_release.sh

Run hello_world example on pico-imx7d:

In u-boot prompt:

=> fatload mmc 0:1 0x7F8000 hello_world.bin
=> dcache flush
=> bootaux 0x7F8000

On the cortex-m4 debug console, you should see the following output:

Hello World!