Vajra on Arty A7-100: Artix-7 FPGA Development Board


Platform Shakti: Shakti is an open-source initiative by the RISE group at IIT-Madras, which is not only building open source, production grade processors, but also associated components like interconnect fabrics, verification tools, storage controllers, peripheral IPs and SOC tools.

Microcontroller C-CLASS
Frequency 50MHz
Flash 0B
Vendor Xilinx


Please use vajra ID for board option in “platformio.ini” (Project Configuration File):

platform = shakti
board = vajra

You can override default Vajra on Arty A7-100: Artix-7 FPGA Development Board settings per build environment using board_*** option, where *** is a JSON object path from board manifest vajra.json. For example, board_build.mcu, board_build.f_cpu, etc.

platform = shakti
board = vajra

; change microcontroller
board_build.mcu = C-Class

; change MCU frequency
board_build.f_cpu = 50000000L


Vajra on Arty A7-100: Artix-7 FPGA Development Board supports the next uploading protocols:

  • ftdi
  • ftdi
  • jlink
  • jlink

Default protocol is ftdi

You can change upload protocol using upload_protocol option:

platform = shakti
board = vajra

upload_protocol = ftdi


Debugging - “1-click” solution for debugging with a zero configuration.


You will need to install debug tool drivers depending on your system. Please click on compatible debug tool below for the further instructions and configuration information.

You can switch between debugging Tools & Debug Probes using debug_tool option in “platformio.ini” (Project Configuration File).

Vajra on Arty A7-100: Artix-7 FPGA Development Board has on-board debug probe and IS READY for debugging. You don’t need to use/buy external debug probe.

Compatible Tools On-board Default
FTDI Chip Yes Yes


Name Description
Shakti SDK A software development kit for developing applications on Shakti class of processors