1 / 43

General Purpose Input Output GPIO

ECE 699: Lecture 3. General Purpose Input Output GPIO. Required Reading. The ZYNQ Book Tutorials. Tutorial 1: First Designs on ZYNQ Tutorial 2: Next Steps in Zynq SoC Design. ZYBO Reference Manual. Section 13: Basic I/O. LogiCORE IP AXI GPIO Product Specification.

frew
Télécharger la présentation

General Purpose Input Output GPIO

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. ECE 699: Lecture 3 General Purpose Input Output GPIO

  2. Required Reading The ZYNQ Book Tutorials • Tutorial 1: First Designs on ZYNQ • Tutorial 2: Next Steps in Zynq SoC Design ZYBO Reference Manual • Section 13: Basic I/O LogiCORE IP AXI GPIO Product Specification LogiCORE IP AXI GPIO v2.0 Product Guide The ZYNQ Book • Chapter 2: The Zynq Device (“What is it?)

  3. ZYBO Board Source: ZYBO Reference Manual

  4. ZYBO Board Components Source: ZYBO Reference Manual

  5. Source: The Zynq Book Tutorials

  6. ZYBO General Purpose Input Output (GPIO) Source: ZYBO Reference Manual

  7. Mapping of an Embedded SoC Hardware Architecture to Zynq Source: Xilinx White Paper: Extensible Processing Platform

  8. Mapping of an Embedded SoC Hardware Architecture to Zynq Source: The Zynq Book

  9. A Simplified Model of the Zynq Architecture Source: The Zynq Book

  10. Source: The Zynq Book Tutorials

  11. Source: The Zynq Book Tutorials

  12. Source: The Zynq Book Tutorials

  13. ZYBO Board Source: ZYBO Reference Manual

  14. ZYBO Board Components Source: ZYBO Reference Manual

  15. The Zynq Processing System Source: The Zynq Book

  16. Simplified Block Diagram of the Application Processing Unit (APU) Source: The Zynq Book

  17. AXI GPIO Features • Configurable single or dual GPIO channel(s) • Each channel configurable to have from 1 to 32 bits • Dynamic programming of each GPIO bit asinput or output • Individual configuration of each channel • Independent reset values for each bit of all registers • Optional interrupt request generation • AXI4-Lite interface to Processing System

  18. Block Diagram of AXI GPIO enabled only when the C_INTERRUPT_PRESENT generic set to 1 IPIC – IP Interconnect interface Source: LogiCORE IP AXI GPIO: Product Specification

  19. GPIO Core Source: LogiCORE IP AXI GPIO: Product Specification

  20. GPIO Core Parameters Source: LogiCORE IP AXI GPIO: Product Specification

  21. Setting GPIO Core Parameters in Vivado

  22. Setting GPIO Core Parameters in Vivado

  23. GPIO_DATA and GPIO2_DATA Registers Source: LogiCORE IP AXI GPIO: Product Specification

  24. GPIO_TRI and GPIO2_TRI Registers Source: LogiCORE IP AXI GPIO: Product Specification

  25. AXI GPIO System Parameters C_HIGHADDR – C_BASEADDR ≥ 0xFFF Source: LogiCORE IP AXI GPIO: Product Specification

  26. Addresses of AXI GPIO Registers Source: LogiCORE IP AXI GPIO: Product Specification

  27. Address Editor in Vivado

  28. AXI Interconnects and Interfaces Source: The Zynq Book

  29. C Program (1) /* Include Files */ #include "xparameters.h" #include "xgpio.h" #include "xstatus.h" #include "xil_printf.h" /* Definitions */ #define GPIO_DEVICE_ID XPAR_AXI_GPIO_0_DEVICE_ID /* GPIO device that LEDs are connected to */ #define LED 0x03 /* Initial LED value */ #define LED_DELAY 10000000 /* Software delay length */ #define LED_CHANNEL 1 /* GPIO port for LEDs */ #define printf xil_printf /* smaller, optimized printf */

  30. C Program (2) XGpio Gpio; /* GPIO Device driver instance */ int LEDOutputExample(void) { volatile int Delay; int Status; int led = LED; /* Hold current LED value. Initialize to LED definition */ /* GPIO driver initialization */ Status = XGpio_Initialize(&Gpio, GPIO_DEVICE_ID); if (Status != XST_SUCCESS) { return XST_FAILURE; } /*Set the direction for the LEDs to output. */ XGpio_SetDataDirection(&Gpio, LED_CHANNEL, 0x00);

  31. C Program (3) /* Loop forever blinking the LED. */ while (1) { /* Write output to the LEDs. */ XGpio_DiscreteWrite(&Gpio, LED_CHANNEL, led); /* Flip LEDs. */ led = ~led; /* Wait a small amount of time so that the LED blinking is visible. */ for (Delay = 0; Delay < LED_DELAY; Delay++); } return XST_SUCCESS; /* Ideally unreachable */ }

  32. C Program (4) /* Main function. */ int main(void){ int Status; /* Execute the LED output. */ Status = LEDOutputExample(); if (Status != XST_SUCCESS) { xil_printf("GPIO output to the LEDs failed!\r\n"); } return 0; }

  33. xparameters.h /* Definitions for driver GPIO */ #define XPAR_XGPIO_NUM_INSTANCES 1 /* Definitions for peripheral AXI_GPIO_0 */ #define XPAR_AXI_GPIO_0_BASEADDR 0x41200000 #define XPAR_AXI_GPIO_0_HIGHADDR 0x4120FFFF #define XPAR_AXI_GPIO_0_DEVICE_ID 0 #define XPAR_AXI_GPIO_0_INTERRUPT_PRESENT 0 #define XPAR_AXI_GPIO_0_IS_DUAL 0

  34. Source: LogiCORE IP AXI GPIO: Product Specification

  35. Constraints File

  36. ZYBO General Purpose Input Output (GPIO) Source: ZYBO Reference Manual

  37. entity design_1_wrapper is port ( DDR_addr : inout STD_LOGIC_VECTOR ( 14 downto 0 ); DDR_ba : inout STD_LOGIC_VECTOR ( 2 downto 0 ); DDR_cas_n : inout STD_LOGIC; DDR_ck_n : inout STD_LOGIC; DDR_ck_p : inout STD_LOGIC; DDR_cke : inout STD_LOGIC; DDR_cs_n : inout STD_LOGIC; DDR_dm : inout STD_LOGIC_VECTOR ( 3 downto 0 ); DDR_dq : inout STD_LOGIC_VECTOR ( 31 downto 0 ); DDR_dqs_n : inout STD_LOGIC_VECTOR ( 3 downto 0 ); DDR_dqs_p : inout STD_LOGIC_VECTOR ( 3 downto 0 ); DDR_odt : inout STD_LOGIC; DDR_ras_n : inout STD_LOGIC; DDR_reset_n : inout STD_LOGIC; DDR_we_n : inout STD_LOGIC; FIXED_IO_ddr_vrn : inout STD_LOGIC; FIXED_IO_ddr_vrp : inout STD_LOGIC; FIXED_IO_mio : inout STD_LOGIC_VECTOR ( 53 downto 0 ); FIXED_IO_ps_clk : inout STD_LOGIC; FIXED_IO_ps_porb : inout STD_LOGIC; FIXED_IO_ps_srstb : inout STD_LOGIC; leds_tri_o : out STD_LOGIC_VECTOR ( 3 downto 0 ) ); end design_1_wrapper;

  38. design_1_i: component design_1 port map ( DDR_addr(14 downto 0) => DDR_addr(14 downto 0), DDR_ba(2 downto 0) => DDR_ba(2 downto 0), DDR_cas_n => DDR_cas_n, DDR_ck_n => DDR_ck_n, DDR_ck_p => DDR_ck_p, DDR_cke => DDR_cke, DDR_cs_n => DDR_cs_n, DDR_dm(3 downto 0) => DDR_dm(3 downto 0), DDR_dq(31 downto 0) => DDR_dq(31 downto 0), DDR_dqs_n(3 downto 0) => DDR_dqs_n(3 downto 0), DDR_dqs_p(3 downto 0) => DDR_dqs_p(3 downto 0), DDR_odt => DDR_odt, DDR_ras_n => DDR_ras_n, DDR_reset_n => DDR_reset_n, DDR_we_n => DDR_we_n, FIXED_IO_ddr_vrn => FIXED_IO_ddr_vrn, FIXED_IO_ddr_vrp => FIXED_IO_ddr_vrp, FIXED_IO_mio(53 downto 0) => FIXED_IO_mio(53 downto 0), FIXED_IO_ps_clk => FIXED_IO_ps_clk, FIXED_IO_ps_porb => FIXED_IO_ps_porb, FIXED_IO_ps_srstb => FIXED_IO_ps_srstb, leds_tri_o(3 downto 0) => leds_tri_o(3 downto 0) );

  39. ZYBO_Master.xdc (1) ##LEDs ##IO_L23P_T3_35 set_property PACKAGE_PIN M14 [get_ports {leds_tri_o[0]}] set_property IOSTANDARD LVCMOS33 [get_ports {leds_tri_o[0]}] ##IO_L23N_T3_35 set_property PACKAGE_PIN M15 [get_ports {leds_tri_o[1]}] set_property IOSTANDARD LVCMOS33 [get_ports {leds_tri_o[1]}] ##IO_0_35 set_property PACKAGE_PIN G14 [get_ports {leds_tri_o[2]}] set_property IOSTANDARD LVCMOS33 [get_ports {leds_tri_o[2]}] ##IO_L3N_T0_DQS_AD1N_35 set_property PACKAGE_PIN D18 [get_ports {leds_tri_o[3]}] set_property IOSTANDARD LVCMOS33 [get_ports {leds_tri_o[3]}]

  40. ZYBO General Purpose Input Output (GPIO) Source: ZYBO Reference Manual

  41. ZYBO_Master.xdc (2) ##Switches ##IO_L19N_T3_VREF_35 #set_property PACKAGE_PIN G15 [get_ports {sw[0]}] #set_property IOSTANDARD LVCMOS33 [get_ports {sw[0]}] ##IO_L24P_T3_34 #set_property PACKAGE_PIN P15 [get_ports {sw[1]}] #set_property IOSTANDARD LVCMOS33 [get_ports {sw[1]}] ##IO_L4N_T0_34 #set_property PACKAGE_PIN W13 [get_ports {sw[2]}] #set_property IOSTANDARD LVCMOS33 [get_ports {sw[2]}] ##IO_L9P_T1_DQS_34 #set_property PACKAGE_PIN T16 [get_ports {sw[3]}] #set_property IOSTANDARD LVCMOS33 [get_ports {sw[3]}]

  42. ZYBO_Master.xdc (3) ##Buttons ##IO_L20N_T3_34 #set_property PACKAGE_PIN R18 [get_ports {btn[0]}] #set_property IOSTANDARD LVCMOS33 [get_ports {btn[0]}] ##IO_L24N_T3_34 #set_property PACKAGE_PIN P16 [get_ports {btn[1]}] #set_property IOSTANDARD LVCMOS33 [get_ports {btn[1]}] ##IO_L18P_T2_34 #set_property PACKAGE_PIN V16 [get_ports {btn[2]}] #set_property IOSTANDARD LVCMOS33 [get_ports {btn[2]}] ##IO_L7P_T1_34 #set_property PACKAGE_PIN Y16 [get_ports {btn[3]}] #set_property IOSTANDARD LVCMOS33 [get_ports {btn[3]}]

More Related