Nios Software Tutorial - Faculty.lasierra.edu

Nios Software Development TutorialTutorialBefore starting this section of the tutorial, reset the system by pressing andholding SW0 on the Nios development board while pressing andreleasing the CPU reset button. This action brings up the system with theGERMS monitor waiting for commands (instead of running the webserver from the factory reference design).Perform the following steps to download, run, and debug the program.1. Choose Programs > Altera > Nios > Nios SDK Shell(Windows Start menu) to open a second Nios SDK Shell.2. Type the following command in the shell to enter terminal mode andconnect to the serial port on the host PC:nios-run –t -r rThe –t option changes to terminal mode and the –r option forces aconnection to the serial port.2Tutorial1 COM1 is the default port. If you are using COM2, use thecommand nios-run –t –p com2.3. Switch to the other SDK Shell, which is in command mode (notterminal mode).4. Download lcd_demo1.srec (via JTAG) to the Nios developmentboard and launch Insight by typing one of the following commands(Figure 4 shows the GUI):nios-debug lcd_demo1.srec rnios-debug lcd_demo1.out rlcd_demo1 is loaded into the program memory, which is at address0x800000 for Stratix and Cyclone example designs. The nios-debugcommand automatically sets a software breakpoint at main()denoted by the red square in the left margin.You can use the nd command instead of nios-debug. To learn moreabout the nios-debug command options, type nios-debug --helpr at the Nios SDK Shell prompt or refer to the Nios EmbeddedProcessor Software Development Reference Manual.Altera Corporation 23