Running Freertos on qemu

Kernel
1

Hello , i have created a environment in qemu that emulated ARMv7 architecture. Can i port freertos inside it ,are there any available demos for it ?

2

Here are some projects:

GCC Command line to build and start QEMU in the readme.md (note I find this tricky to build on Windows due to the file path lengths - suggest keeping near the route of the file system if on Windows).

IAR - command line for starting QEMU is in the comments at the top of main.c.

3

Should have said we also have some that include networking, although they are more tricky to set up.

4

I would like to know how to set up networking ,its important for my application .

5

Are you running on Linux or Windows? Easier on Linux, you will find the required command line in the readme for this project: FreeRTOS/FreeRTOS-Plus/Demo/FreeRTOS_Plus_TCP_Echo_Qemu_mps2 at master · FreeRTOS/FreeRTOS · GitHub

If you are running on Windows you first have to install a tap driver, and then bridge the tap network interface to a real network interface. I use the tap driver that comes with OpenVPN - which Google will find easily enough for you.

6

Hi am i using Linux ,my goal is to create a qemu image with freertos with one of the tasks will enable am ssh connection .Can i implement this using the example you mentioned ?

7

Hi Mr. Barry,

I downloaded OpenVPN and bridged it with my hard adapter. When I start simulation my tap interface going into active mode but I cannot receive any packet. Im using zynq7020 on Vitis on Windows. What should I write for to QEMU arguments file?

Have a good day.

8

This is the command line I use for an older Zynq part if it helps:

qemu-system-arm -M xilinx-zynq-a9 -smp 1 -nographic -net nic,model=cadence_gem -net user -kernel RTOSDemo.elf -s -S

9

Hi Mr. Barry,

The following arguments solved my problem. I can see ethernet packets in wireshark at tap interface.

Thank you.

net nic -net nic -net tap,ifname=tap0,script=no,downscript=no

10

Thank you for reporting back.

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