Page Comparison

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Design Components

• petalinux_bsp
• heartbeat.elf

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Build Flow Tutorials

This tutorial uses both XSDK and PetaLinux tools. It is recommended to use separate shells for each of the tools.

Heartbeat Application

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heartbeat heartbeat

The heartbeat application is a FreeRTOS application that executes on RPU-0 after the FSBL has finished. This application is a simple dual task application that demonstrates communication between the two tasks by printing messages to the UART1 console.

• Create a new SDx workspace.

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  % cd $TRD_HOME/workspaces/ws_heartbeat % xsdk -workspace . &&

  
  

• Click 'Import Project' from the welcome screen, browse to the current working directory and make sure the heartbeat, heartbeat_bsp, and hw_platform_0 projects are selected. Click Finish.
  
• Right-click on the heartbeat project and select 'Build Project'.

• Copy the generated heartbeat executable into the PetaLinux BSP.

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  cp heartbeat/Debug/heartbeat.elf $TRD_HOME/petalinux/bsp/images/linux

  
  

PetaLinux BSP

This tutorial shows how to build a boot image that includes the heartbeat application using the PetaLinux build tool. This step assumes you have run through the PetaLinux build in DM1 previously.

• Create a boot image.

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  % cd $TRD_HOME/petalinux/bsp/images/linux % petalinux-package --boot --bif=../../project-spec/boot/dm2.bif --force

  
  

• Copy the generated boot image to the dm2 SD card directory.

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  % mkdir -p $TRD_HOME/sd_card/dm2 % cp BOOT.BIN $TRD_HOME/sd_card/dm2

  
  

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Run Flow Tutorial

• See here for board setup instructions.
• Copy all the files from the $TRD_HOME/sd_card/dm2 SD card directory to a FAT formatted SD card.
• Power on the board to boot the images; make sure all power rail LEDs are lit green.

• The user can now see FSBL prints on UART-0 and prints from heartbeat application can be viewed on UART-1 which is shown in the following picture:

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  Hello from Freertos example main Rx task (task number: 0) received string from Tx task: I am alive Rx task (task number: 1) received string from Tx task: I am alive Rx task (task number: 2) received string from Tx task: I am alive Rx task (task number: 3) received string from Tx task: I am alive Rx task (task number: 4) received string from Tx task: I am alive Rx task (task number: 5) received string from Tx task: I am alive Rx task (task number: 6) received string from Tx task: I am alive Rx task (task number: 7) received string from Tx task: I am alive Rx task (task number: 8) received string from Tx task: I am alive Rx task (task number: 9) received string from Tx task: I am alive Rx task (task number: 10) received string from Tx task: I am alive Rx task (task number: 11) received string from Tx task: I am alive Rx task (task number: 12) received string from Tx task: I am alive

  
  

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