Hello World PS/PL System

Transcription

1 Hello World PS/PL System Zynq Hands-On Tutorial Revision Date Remarks 1 5/9/2015 Initial revision This tutorial describes a design of simple processor/programmable logic system based on the Xilinx Zynq platform. The design is implemented for the Xilinx ZC702 evaluation board. Xilinx Vivado environment required.

2 Introduction We will see step by step, how to create simple design in Vivado for Zynq and after this how to create software files in SDK, that would write data to the processor registers and operate hardware FPGA logic to turn on LED on the board. This project can be used as a base for more complicated designs. We will use Xilinx evaluation board ZC702 with FPGA Zynq-7000 XC7Z020-1CLG484C. We will also need 2 USB cables, one for FPGA programming and second one for UART to communicate with the processor. The Vivado version used in this example is Step 1 Create new Vivado Project 1. In Vivado first window click on Create New Project 2. Click Next. 3. Select name for this project and where it should located. 4. In the next window select RTL project. Hello World PS/PL System Xilinx Vivado Hands-On Tutorial #1 Page. 2

3 5. Click Next several times without specify anything, till you reach Default Part window. In this window chose "boards" in the left upper corner, and select board that you use. In our case we selected zc702 rev 1.1. If you use Avnet board, you can download board definition files from their site, copy them to Xilinx folder, in our case is C:\Xilinx\Vivado\2013.4\data\boards\zynq. After this the name of the board will appear in this list. 6. Click next, than Finish. Now Vivado will open our project. Hello World PS/PL System Xilinx Vivado Hands-On Tutorial #1 Page. 3

4 Step 2: Create Block Design. 1. In the left column (Flow Navigator), in the IP Integrator, select Create Block Design. Then in the window that appeared, specify name for the Block Design. I left is design_1, as it was by default. Click OK. Hello World PS/PL System Xilinx Vivado Hands-On Tutorial #1 Page. 4

5 2. In the next window select Add IP. The list of IPs will appear. Hello World PS/PL System Xilinx Vivado Hands-On Tutorial #1 Page. 5

6 3. Write word "zynq" in the search line, select ZYNQ7 Processing system and drag it with the mouse to the white area. You will see the ZYNQ7 IP: 4. Click on Run Block Automation. This will configure the processor with your board parameters. Now you will see that processor appearance changed a bit. In the next steps we will configure the processor in order to remove any unused ports and features, and also to set the clock value. Hello World PS/PL System Xilinx Vivado Hands-On Tutorial #1 Page. 6

7 5. Double click on the IP picture and in the opened window select Peripheral I/O pins in the left column. Uncheck all peripherals that we don't need. In our case we can just uncheck everything, except of UART1, because we'll need it to communicate with the processor. 6. In the Clock Configuration window we can select additional clocks and also to set the desired frequency. For this design we can leave the default value, 50 MHz. Hello World PS/PL System Xilinx Vivado Hands-On Tutorial #1 Page. 7

8 7. Click OK. Now the IP should seem like that: 8. Click right mouse on the empty area and select Add IP 9. Select AXI GPIO from the IP catalog and drag it to the empty area. 10. Double-click on the IP, select IP Configuration bookmark. Check All Outputs, set GPIO width to 1. Click OK. Hello World PS/PL System Xilinx Vivado Hands-On Tutorial #1 Page. 8

9 11. Select Processor System Reset IP from IP Catalog, double-click on it, set all widths to 1, click OK. Hello World PS/PL System Xilinx Vivado Hands-On Tutorial #1 Page. 9

10 13. Click on Run Connection Automation, select /axi_gpio_/s_axi. Click OK. 14. Now your design should seem like that: Hello World PS/PL System Xilinx Vivado Hands-On Tutorial #1 Page. 10

11 15. Select GPIO port of AXI GPIO IP, click right mouse and select Make External. 16. Select Constant IP from IP list and connect it to dcm_locked port of Processor System Reset IP. Hello World PS/PL System Xilinx Vivado Hands-On Tutorial #1 Page. 11

12 Now the design should seem like this: 17. Save Block Design by pressing Ctrl+S. 18. In the left column (Flow Navigator) click on Generate Block Design. The process should take about 10 seconds. Hello World PS/PL System Xilinx Vivado Hands-On Tutorial #1 Page. 12

13 Step 3: Creating HDL wrapper for the Block Design. 1. In the Sources window, in Hierarchy bookmark, right click on design_1(design_1.bd)(1) with yellow triangle at the left, and select Create HDL Wrapper. 2. Select Let Vivado manage wrapper and auto-update, press OK. Step 4: Synthesizing the design, pin assignment, bitstream generation. 1. In the Flow Navigator, select Run Synthesis. 2. After synthesis completed, select Open Synthesized Design and click OK. Hello World PS/PL System Xilinx Vivado Hands-On Tutorial #1 Page. 13

14 3. Select I/O Planning. 4. In the I/O Ports window, open the GPIO_59924, select the gpio_tri_o pin and set E15 in the Site column, after that set LVCMOS25 in the I/O Std column. Press Ctrl+S, then in Save Constraints window set Constraints file name, for example, Design_constr, than press OK. 5. Right-click on Run Synthesis in the Flow Navigator window, select Reset Synthesis Run. Hello World PS/PL System Xilinx Vivado Hands-On Tutorial #1 Page. 14

15 6. Click on Generate Bitstream in the Flow Navigator window. Step 5: Create SDK project Select File, Export, Export Hardware for SDK. Ensure that Launch SDK id checked and press OK. Hello World PS/PL System Xilinx Vivado Hands-On Tutorial #1 Page. 15

16 Now we are in the SDK environment. Hello World PS/PL System Xilinx Vivado Hands-On Tutorial #1 Page. 16

17 Step 6: Create Hello World Application In the SDK, select File, New, Application Project. In Project name type hello_led and press Next. Hello World PS/PL System Xilinx Vivado Hands-On Tutorial #1 Page. 17

18 In the Templates window select Hello World and press Finish Hello World PS/PL System Xilinx Vivado Hands-On Tutorial #1 Page. 18

19 Hello World PS/PL System Xilinx Vivado Hands-On Tutorial #1 Page. 19

20 Hello World PS/PL System Xilinx Vivado Hands-On Tutorial #1 Page. 20

21 Step 7: Add LED blinking code Delete the content of the helloworld.c file and paste there the code below #include "platform.h" #include "xparameters.h" #include "xgpio.h" #define GPIO_LED_ID XPAR_GPIO_0_DEVICE_ID #define LED_CHAN 1 #define LED_ON 1 #define LED_OFF 0 Hello World PS/PL System Xilinx Vivado Hands-On Tutorial #1 Page. 21

22 XGpio led_gpio; // the gpio driver instance int main() { init_platform(); int rc; rc = XGpio_Initialize(&led_gpio, GPIO_LED_ID); if (rc!= XST_SUCCESS) return XST_FAILURE; XGpio_SetDataDirection(&led_gpio, LED_CHAN, 0); // 0 - output, 1 - input int i = 0; for (i = 0; i < 10; i++) { XGpio_DiscreteWrite(&led_gpio, LED_CHAN, LED_ON); usleep( ); XGpio_DiscreteWrite(&led_gpio, LED_CHAN, LED_OFF); } usleep( ); return 0; } Hello World PS/PL System Xilinx Vivado Hands-On Tutorial #1 Page. 22

23 That s it. the project is ready. You can run on the ZC702 board. Hello World PS/PL System Xilinx Vivado Hands-On Tutorial #1 Page. 23