Error: top level design entity "adc_system" is undefined / Pin Assignment for ADC

The pin-assignment for the ADC can be found on page 22 in the user manual (http://www.altera.com/literature/ug/de0_nano_user_manual_v1.9.pdf).

However, the ADC can be put into operation using altera's manual (ftp://ftp.altera.com/up/pub/altera_material/12.1/tutorials/de0-nano/using_de0-nano_adc.pdf).

It didn't work for me on the first attempt, here is how it can be done using Nios II / Quartus II 14.1.

Install the university program (http://www.altera.com/education/univ/software/upds/unv-upds.html) first!

- Start Quartus

- New Project

- Choose a new folder named adc_example as the working directory and name the project my_adc

- Empty project... Device family is cyclone iv e and the device is ep4ce22f17c6

- select Tools > Qsys, save the system as: de0_nano_sopc.qsys

- rename the clock clk_50

- Add a Nios II (Classic) Processor and select Nios II/e, use F2 to rename the Processor cpu

- Add 40960 Bytes of On-Chip Memory (RAM or ROM) and rename it to onchip_memory2

- Add JTAG-UART and rename it to jtag_uart

- Add an output port (PIO) and name it pio_led

- Add a System ID peripheral and name it sysid

- Add the ADC which is found under University program / Generic IO / de0-nano adc controller

- Change the number of channels used to 2

- Rename the adc adc

- Export the connections for the LEDs and the ADC to led_pio and adc

- Wire the components like in the attached screenshot.

- Edit the cpu: Assign Reset and Exception vectors to onchip_memory2

- Click System > Assign Base Adresses, Refresh the System using F5, Save and generate

- Back in Qsys, the file DE0_NANO_SOPC.qip can be added (by right clicking on Files)

- Select File > New Block Diagram, right click in the blank space > insert symbol and select de0_nano_sopc

- Insert the symbol, right click it and select generate pins for symbol ports

- Save as my_adc.bdf

- Start Compilation

- Use the Pin Planner to Assign the pins (Attachment in above post)

- Start Compilation

- Open Nios II and select ADC_example as the workspace

- Select new > nios ii application and bsp from template

- Select the DE0_NANO_SOPC.sopcinfo - File, name the project hello, select the hello world small template and click finish. Right click Hello_bsp > Nios II > BSP Editor

- In the BSP Editor hit enable_small_c_library and click generate

- In Nios II right click Hello and select build project

- Connect your board using a USB-cable that is not too long. Open Quartus II Programmer, add file my_adc.sof (if the USB Blaster doesn't work, look here http://www.alteraforum.com/forum/showthread.php?t=28514)

- Click Start to be happy to see Progress: 100% (Successful)

- In Nios, right click Hello and select run as > nios ii hardware

- Be happy to see 'Hello from Nios II!' in your console!

- Double click hello_world.c (under Hello). Insert the C code from page 11 of the manual (ftp://ftp.altera.com/up/pub/altera_material/12.1/tutorials/de0-nano/using_de0-nano_adc.pdf).

- Open the project folder and open de0_nano_sopc.html (in the folder DE0_NANO_SOPC) in your browser and find the adresses of the SOPC components.

- In the C-Code, change the defined adresses of adc_addr and led_addr accordingly.

- Save hello_world.c and build the project

- Setup the Hardware using a (100K) potentiometer like on page 135 of the DE0_NANO_User_Manual (or page 4f of 'Using_DE0-Nano_ADC')

- In Nios right click Hello and run as > nios ii hardware to see that now the binary output register is assigned to the LEDs.

- Back in Nios, edit the C-Code by inserting printf("Philipp is the boss!\n"); right under int main (void){.

- Save, Build Project and run as > nios ii hardware to give me thanks ;)

- Back in Qsys, the file de0_nano_sopc.qip can be added (by right clicking on Files)

- Select File > New Block Diagram, right click in the blank space > insert symbol and select de0_nano_sopc

- Insert the symbol, right click it and select generate pins for symbol ports

- Save as my_adc.bdf

- Start Compilation

- Use the pin planner to Assign the pins (Attachment of above post)

- Start Compilation

- Open Nios II and select adc_example as the workspace

- Select new > nios ii application and bsp from template

- Select the DE0_NANO_SOPC.sopcinfo - File, name the project Hello, select the hello world small template and click finish. Right click Hello_bsp > nios ii > bsp editor

- In the BSP Editor hit enable_small_c_library and click generate

- In Nios II right click Hello and select build project

- Connect your board using a USB-cable that is not too long. Open Quartus II Programmer, add file my_adc.sof (if the USB Blaster doesn't work, look here (http://www.alteraforum.com/forum/showthread.php?t=28514))

- Click Start to be happy to see Progress: 100% (Successful)

- In Nios, right click Hello and select run as > nios ii hardware

- Be happy to see 'Hello from Nios II!' in your console!

- Double click hello_world.c (under Hello). Insert the C code from page 11 of the manual (ftp://ftp.altera.com/up/pub/altera_material/12.1/tutorials/de0-nano/using_de0-nano_adc.pdf).

- Open the project folder and open de0_nano_sopc.html (in the folder DE0_NANO_SOPC) in your browser and find the adresses of the SOPC components.

- In the C-Code, change the defined adresses of adc_addr and led_addr accordingly.

- Save hello_world.c and build the Project

- Setup the Hardware using a (100K) potentiometer like on page 135 of the DE0_NANO_User_Manual (or page 4f of 'Using_DE0-Nano_ADC')

- In Nios right click Hello and run as > nios ii hardware to see the binary register output assigned to the LEDs.

- Back in Nios, edit the C-Code by inserting printf("Philipp is the boss!\n"); right under int main (void){.

- Save, Build Project and run as > nios ii hardware to give me thanks ;)

--- Quote Start ---

Is it that there's an error in the Tutorial "Using the DE0-Nano ADC Controller"?

Using the code on page 10, starting Analysis & Synthesis results in the error "top level design entity "adc_system" is undefined".

First line of code is: module adc_demo... Using adc_system instead seems to work.

--- Quote End ---

yes there is, but is not the code, page 6 clearly states: "to make a new system with the adc controller, create a new project in quartus ii named adc_demo. the top-level module should also be adc_demo."

the error is in page 8 when it states: "create a new verilog file and copy the code from figure 8 into it, or use the one provided in the “design files” subdirectory. save this file as adc_system.v" even the provided file is correctly named adc_demo.v

best regards.