Brings you stuff and can find its way to you. Example with the VHDPlus Motor & Level Shifter Extension and NIOSDuino
1.1. Clone Repository
1.2. Open the Robot.vhdpproj file with the VHDPlus IDE
1.3. Open Libraries/NIOSDuino/NIOSDuino_Core.qsys
1.4. Click on onchip_flash_0 and disable non-default initialization file
1.5. Compile the project
2.1. Open the NIOS II program tool
2.2. Click on browse and select the Software folder in the project folder
2.3. Click on File -> New -> Nios II Application and BSP from Template
2.4. Select the NIOSDuino_Core.sopcinfo file in the project folder
2.5. Name the project e.g. Robot and click on Finish
2.6. Delete the hello_world.c file and copy the files and folders from the Code folder in the Robot project
2.7. Open the Makefile and edit the following lines:
ALT_INCLUDE_DIRS := arduino arduino/Wire/src arduino/SPI/src
ALT_CXXFLAGS := -std=gnu++11
ALT_CPPFLAGS := -D__AVR__ -DARDUINO=185 -ffunction-sections
ALT_LDFLAGS := -Wl,--gc-sections
2.8. Right click the Robot_bsp project and click on NIOS II -> BSP Editor...
2.9. Set stderr to none and stdin and stdout to uart_0
2.10. Right click the Robot project and click on Build Project
2.11. Right click the Robot project and click on Make Targets -> Build... -> mem_init_generate -> Build
3.1. Go back to the VHDPlus IDE and open the Libraries/NIOSDuino/NIOSDuino_Core.qsys file
3.2. Click on onchip_flash_0, enable non-default initialization file and select the Software/Robot/mem_init/NIOSDuino_Core_onchip_flash_0.hex file as User created hex or mif file
3.3. Compile the project again
3.4. Program the FPGA
Now you can change the code yourself with the NIOS II program tool. You can test the code without compiling by clicking on Run in Eclipse, or Run -> Run as -> NIOS II Hardware.
After compiling you have to click on Robot_bsp -> NIOS II -> Generate BSP. To save your code on the FPGA, click on Build Project and Make Targets again. Then you can compile the VHDPlus project.