Verilog gpio example

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Ian Lurie

Verilog gpio example

The I2C specification. If you plan to assign your output in sequential code,such as within an always block, declare it as a reg (which really is a misnomer for "variable" in Verilog). SFR (ZIP, 6 KB, 1/05); Design Files - direct memory access (ZIP, 13 KB, 4/05). All 64 GPIO pins on the shield are available as either input or output, allocated on a pin-by-pin basis. Two example programs are given that diplay the state of the toggle switches on the red LEDs. 1 This tutorial shows how to add a Microblaze Microcontroller System (MCS) embedded processor to a project including adding a simple C program. But without this first step, there won't be a second. com ). Pin Control Sybsystem – Building Pins and GPIO from the ground up for example this simple (VHDL or Verilog) thus forcing pull-up always on for example XPS General Purpose Input/Output (GPIO) (v2. 0. Bhavnil Patel. This is just a simple code illustrating how to take data from outside,inside the FPGA through GPIO pin an gving output on other GPIO pin or GPIO LED. Resource requirements depend on the implementation (i. 3. This can lead to simulation not matching synthesized results. halfadder fulladder binary aritmetic xor from nand gate level minimization. It is synthesized for Xilinx Spartan 3E, & can be clocked upto 225MHz. To load the DE0-Nano, can either import the verilog and tcl files into your own quartus project, or use my pyquartus tool. A learning tutorial for Beginners to blink LED using Verilog HDL on Altera DE1 Board. A multiplexer is a device that can transmit several digital signals on one line by selecting certain switches. Syntax: keyword unique_name (drain. Of these 24 pins, four of them (chip select, read, write, and ready) are for This Project provides SPI Mode-3 Master & Slave modules in Verilog HDL. VHDL certainly had advantages over Verilog early on, but with the features first released in Verilog 2001, and then later in SystemVerilog, I feel that Verilog is now a good choice. Figure 2 shows the Software UART configuration using an UltraController embedded processor with one GPIO input and one or two GPIO outputs. v file, which will describe our program logic (A = NOT B). 07. par folder contains some batch files and scripts to build the example design. The design was targeted to an Artix 7 FPGA (on a app_software and app_software_HAL both give example methods to write to the audio output (using C code running on the Nios II), and the verilog or vhdl folder show example systems on connecting the core to a NIOS II using your preferred HDL. v. But for driving that net, generally tri state buffers are used. Its use is to verilog RTL and verification suite are finished (see Downloads section) This example implements a clocked bidirectional pin in Verilog HDL. {. GPIO Pin Expansion Using I2C Bus Interface in Altera MAX Series 2014. This simple tutorial will explain basics in order to program a blinking system. 04 : Black Mesa Labs has some exciting news, the open-source IceZero FPGA Hat for RaspberryPi designed in December in 2016 ( and free to download Gerbers ) has been picked up by Trenz Electronics as a fully assembled product ready to ship and plug into a RaspberryPi. An I2C FAQ page. I am using a ZC702 board with the provided petaLinux running. Example Verilog code for the Prototype Engineering FPGA shield - wramsdell/Verilog_Example. This will show you how to connect a GPIO block which links the PS to LEDs on the board and some memory inside the PL to PS. REFERENCES Apr 19, 2014 As you certainly liked this Altera DE1 tutorial for blinking a LED on the board, you will love this one by doing the same easy thing but with GPIOs  Feb 4, 2014 This simple tutorial will explain basics in order to program a blinking system. Improve your VHDL and Verilog skill I am new to Verilog, so I am not sure how to go about doing this. Run Vivado (I am using 2015. com/lessons Create stm8 IAR project, compile and test. This tutorial shows how to create a simple combinational design (a 3 to 8 decoder using the slider switches and leds) that can be implemented on the Basys3 board. The example shows how to implement highperformance data transfers using the FX3S storage APIs, and also supports features such as device hotplug handling, partitioning (multi-volume) support, and more. Basically, a signal is assigned a new value in VHDL with what is known as a &quot;signal assignment statement&quot;, as you How to Create PWM in Verilog on FPGA? | Xilinx FPGA Programming Tutorials - Duration: 5:58. The first port on the port list is output port. h” header file. ). e. We use the Vivado’s “Create and Package IP” capability to create a simple unit which contains one AXI stream master interface and another custom general purpose interface. Example User Logic to Control the I2C Master. I have tried to make this clock in my testbench the problem is in simulation it doesn't work or my simulation seems to freeze. Maximum SPI Clock (sck) Frequency is 112MHz, which is derived from Main Clock. module in FPGA using Verilog HDL. It is a dual-in-line package with 24 pins. Example Code. A snippet of user logic code below demonstrates a simple technique for managing transactions with multiple reads and writes. 0. However, the learning curve when getting started can be fairly steep. 00a) 6 www. Tech. Find file Copy path 70+ channels, more of your favorite shows, & unlimited DVR storage space all in one great price. Ask Question are assigned to the GPIO pins. . Blog Making Sense of the Metadata: Clustering 4,000 Stack Overflow tags with… Verilog_Example / GPIO_PWM / Fetching latest commit… Cannot retrieve the latest commit at this time. The examples shown in Tables 1 through 5 demonstrate various features of the MAX ® II and MAX low-power CPLD families using Quartus ® II or MAX+PLUS ® II software. xilinx. 1 Subscribe Send Feedback ug-altera_gpio | 2019. In part 4 of this tutorial, we will implement this module on real hardware. This code doesn't compile, I'm looking for either how to make it work, or even just a pointer to what I'm fundamentally missing to make bidirectional signals work. detail. io. In any event, to assign a value to a pin, you would use the assignment operator "<=". Lab Two: Introduction to logic on the FPGA Ben Smith Abstract—This document is an introduction to the DE0-Nano devel-opment board, Altera’s Cyclone IV FPGA and the Quartus IDE. For example the non-blocking statements in your combinatorial process assigning outputPO in SPI_COMM_SLAVE are wrong. Your LibreCore (Verilog, VHDL, Chisel); GPIO Switchbox (Verilog); Museum on FPGA One example are PMOD connectors or the Arduino shield connector. IO pads also use tristate buffers for bidirectional port control. The strength declaration should contain two specified strengths - strength1 and strength0 (see Strengths for more explanations). We will write our design for FPGA using Verilog (as if you write microcontroller programs in C and Assembly). Problem - Write verilog code that has a 50 MHz clock and a reset as input. Blinking a LED, a basic step. g. The GPIO is designed using the Verilog. The GPIO pins controlled by the FPGA start from 100 . Permalink. Figure 2: Example of Arbitration [ 13]. This example core implements GPIO functionality in the FPGA shield. The design is described using Verilog HDL and verified using Xilinx ISim simulator. Quick Quartus: Verilog. com DS569 December 2, 2009 Product Specification XPS GPIO Design Parameters To allow the designer to obtain a XPS GPIO core that is uniquely tailored for the designer’s system, So, for example, if I connect signal1 of infra in to pin 9 and pin 10 for buzzer signal all I know is infra has output 0 or 1, so if it is 0, the buzzer should start; if it is 1, the buzzer should stop. Plug GPIO05 on the DE0-Nano into GPIO 14 on the Raspberry Pi. An example of an interrupt handling function is reading active and pending interrupts and displaying them to an OLED using output GPIO ports. But I can't get anything to compile. 1. it won’t synthesize. In this research work, a GPIO coprocessor IP core has been designed and functionally verified. com Projects I've been playing with that use Field Programmable Gate Arrays, and their status . Figure 1 is a block diagram of the UltraController GPIO interface. Michael ee 8,665 views. This design is written in Verilog HDL and fully verified by functional as well as timing simulation and through hardware implementation on the PCB. We can fit this first demo circuit into a single main. Notice also that the voltage on the IO bank where the input belongs (bank 35) is VADJ. The example design can be found (unsurprisingly) under the folder example_design. rtl folder has all the Verilog files generated by MIG. Patel college of 2T 2TEngineering and Technology, Kherva, Mehsana, India P. v (produces a simple 1Hz sawtooth), as well as test benches for i2s_tx and Basys3_Abacus_top. The core itself can be found in <altera-directory>\ip\University_Program\Audio_Video. Welcome Code -> Display "Welcome" using Verilog. As an example of the available drivers, open the “xuartps. I. How to set up the Xilinx ISE Design Suite to compile FPGA code, and get started with Verilog programming on the SPARTAN-6 on MATRIX devices. The proposed design can be used with any SPI master device. The value of OE determines whether bidir is an input, feeding in inp, or a tri-state, driving out the value b. Type Name Latest commit message Commit time. The component was designed using Quartus II, version 9. Verilog_Example / GPIO / OctalTristateIO. First of all, the kernel releases CPU1 from reset upon boot, so all processors are available. As you can see in the image above, the output is the inverted form of the input clock. VLSI, U. Considering your self-answer, the issue was the input signal which didn't have proper logic levels. Both VHDL and Verilog are shown, and you can choose which you want to learn first. 2 . The reason for that is the same net may be shared with multiple modules and since the net is on inout type, to remove conflict of multiple driver, the tri state buffers are used. An example of I2C slave (method 1) An example of I2C slave (method 2) An example of I2C master; A logic analyzer, to capture live I2C transaction and spy on the bus not ready yet; Links. 0 5 PG144 October 5, 2016 www. A simplest Verilog module could be a simple NOT gate, as shown in the second image below, whose sole job is to invert the incoming input signal. Download complete Xilinx ISE simulation project for BASYS3 board tutorial (Decoder design using Vivado 2015. The value of OE determines whether bidir is an input, feeding in inp , or a tri-state, driving  Verilog. Find this and other hardware projects on Hackster. com DS744 September 21, 2010 Product Specification Functional Description The AXI GPIO design provides a general purpose input/output interface to an AXI4-Lite interface. These ports can be used with some of the lab's peripherals such as the hexkeypad and Lego controller. source, gate) This example provides a Mass Storage Class interface through which USB host can access the SD cards or eMMC devices connected to the FX3S device. Otherwise, it should be a wire, which is also the default. 0, 1, z and x as shown in Table 3. v (i2s transmitter), and oscillator. The schematic editor feature of Quartus is used to synthesize logic gate primitives and more complex logic functions from these primitives. ARM processor. Figure 1 illustrates a typical example of the SPI GPIO interface with a 32-bit input port and a 32-bit output port. The following Verilog code snippet in fact does this. It has an output that can Verilog Modules. the desired number of slaves and data width). Plug GPIO03 on the DE0-Nano into GPIO 15 on the Raspberry Pi. 1 \$\begingroup\$ Tutorial: Your First FPGA Program: An LED Blinker Part 1: Design of VHDL or Verilog. This design is quite useful in the area where there is a requirement of high speed SPI interface. paper i have tried to implement GPIO design using FPGA Embedded applications (for example,. to take place on the microcontroller. the IP does not have an AXI interface. Basically, a signal is assigned a new value in VHDL with what is known as a &quot;signal assignment statement&quot;, as you The Verilog File. Every example I have seen with Verilog and VHDL implementations listed, the VHDL is usually twice as many lines of code as the Verilog. One can make design architecture specification and start verilog coding for the same. displays up Electronics - Verilog - Blinking a LED with GPIOs ›  module test( input clock, // The standard clock input direction, // Direction of io, 1 = set output, 0 = read input input data_in, // Data to send out  The GPIO IP core is user-programmable general-purpose I/O controller. If MISO change on rising edge of SCLK, MISO will change on falling and vice versa. AR# 5403 Constraints - Is there a way to add internal pull-ups/pull-downs in a device using the UCF (User Constraints File) or Constraints Editor? therefore to have fewer pins for the connections. micro-studios. is there any examples of spi by verilog There are some SPI cores, SPI controllers for A/D and D/A, and SPI gpio designed in verilog. 1 . 1,  We have provided you with the following example code to do this. GPIO_SW_W is the wire www. Tutorials, examples, code for beginners in digital design. This is the example code. To generate the simulation design example from the source files for a VHDL simulator, run the following command in the design example directory: UART, Serial Port, RS-232 Interface Code in both VHDL and Verilog for FPGA Implementation. The Right now we are going to use the example design generated by MIG. Verilog Examples - LED blinkning by clock divider We will now extend out clock Divide by 2N code to blink and LED. gpio_pin_config_t led_config = {. Jun 29, 2017 Yosys needs a Verilog (. Verilog_Example / GPIO / GPIO. The Verilog File. 0) March 3, 2004 Hello, Xillinux uses Linux' standard GPIO convention for accessing LEDs and switches (and PMODs for that matter) Please refer to the xillydemo. Using C with Altera DE2 Board This tutorial explains how to communicate with IO devices on the DE2 Board and how to deal with interrupts using C and the Altera Monitor Program. These gates have one output and one or more inputs. Electronics - Verilog - Blinking a LED with GPIOs Submitted by Mi-K on Saturday, April 19, 2014 - 5:48pm As you certainly liked this Altera DE1 tutorial for blinking a LED on the board, you will love this one by doing the same easy thing but with GPIOs. A typical approach to deal with signals with significant noise, intermediate voltage levels or slow edges is to use a Schmitt trigger. Design and Implementation of General Purpose Input Output (GPIO) Protocol. I have tried this multiple ways, I am a bit desperate now. Microblaze MCS Tutorial Jim Duckworth, WPI 1 Microblaze MCS Tutorial for Xilinx Vivado 2015. Find file Copy path Browse other questions tagged verilog system-verilog quartus or ask your own question. Verilog It can be simulated but it will have nothing to do with hardware, i. However, this time select the mss_gpio directory instead of the mss_uart directory. Skip to content. Welcome to the My First FPGA tutorial! Here, we show you how to program your first FPGA device. One can try coding for below topics. Prototype Engineering, LLC Netduino FPGA Shield GPIO Example. P. Do you know how a UART works? If not, first brush up on the basics of UARTs before continuing on. This example implementation counts the busy signal transitions in order to issue commands to the I2C master at the proper time. Please contact me if you find any errors or other problems (e. Interfacing tutorial using the ARM Cortex M3. uint32_t port_state = 0;. High Z for shared bus implementations. UART and mix it with the Hackaday PWM output module along with my own Verilog or VHDL. This page contains Verilog tutorial, Verilog Syntax, Verilog Quick Reference, PLI, modelling memory and FSM, Writing Testbenches in Verilog, Lot of Verilog Examples and Verilog in One Day Tutorial. Jul 30, 2018 In addition, Arduino just released an example FPGA project for Quartus. Application Note: Virtex-II Pro Family XAPP699 (v1. or completeness of case statement in Verilog code. As another option you can try to place the ncmirror code in the vhdl block. FPGA, VHDL, Verilog. The delay for the . give me some other advice how to drive the GPIO pin from the PL part in VHDL LogiCORE IP AXI GPIO (v1. 2017. We will also examine the issue with large data generated in test bench. com Chapter 1 Overview Functional Description The AXI GPIO design provides a general purpose input/output interface to an AXI4-Lite Tri state buffer logic in Verilog and tristate buffer testbench. There are two General Purpose I/O (GPIO) Ports, each made of 32 bidirectional pins on the JP1 and JP2 40-pin expansion headers (hence the ports are each 32-bits wide). 2 now), click on "open example project" and select "base zynq" from the list in the next dialog box. I can code it in C, but I don't know how to code this in Verilog, so I need a code for this idea in Verilog. Example of creating an overlay for the using VHDL or Verilog IP, and controlling the IP using GPIO. v (name inherited from example project), sclk_div. This is exactly what we expect from a NOT gate. The first program uses the programme d I/O approach and the second program uses Here are few Verilog Projects which can be used as educational projects. 1d and SystemVerilog-2012. Design examples offer innovative ideas for Microsemi FPGA applications and help . How to assign value to bidirectional port in verilog? Ask Question Asked 7 years, 8 months ago. The state “get_data” does everything This example problem will focus on how you can construct 4×2 multiplexer using 2×1 multiplexer in Verilog. P M. 22 AN-494 Subscribe Send Feedback This design example shows the capability of Altera® MAX® II, MAX V and MAX 10 to provide general Verilog is a Hardware Description Language (HDL) which can be used to describe digital circuits in a textual manner. The cmos type of switches have two gates and so have two control signals. a particular preference for Verilog, you can choose it here but the guidance . We will Verilog has four logic values i. This is an example of such a code written in C++: I hope Ive understood the question correctly. For example, back in the 80’s a popular real-time clock (RTC) chip is the National Semiconductor’s MM58167B. Figure 4 – SPI timing . Example use of GPIO API. Xilinx Zynq Vivado Timer Example - Duration: 12:07. /* Define the init structure for the output LED pin*/. Almost all FPGA boards contain GPIO peripheral. 09. First, we will make the simplest possible FPGA. SPI timing example is shown in Figure 4. GPIO Port 1 and 2. This tutorial shows the construction of VHDL and Verilog code that blinks an LED at a specified frequency. I have a clock, 'samp_clk', that toggles every 10 clock cycles of the system clock, 'clock' (or that's what I tried to do). Verilog:. Click on the link below to check out the full tutorial where you learn to create the hardware equivalent of “Hello World”: a blinking LED. This project introduces the Quartus II and ModelSim software suites as well as a background on FPGA design flow for system on chip development. While simulation can tell us a lot of things about the correctness of our module, there is nothing like putting it on a piece of hardware and seeing it working. The instantiation of these logic gates (Example 1) can contain zero, one, or two delays. An example can be had by just creating an example project in Vivado. Contains code to design and simulate a UART, free to download. All of these files are relatively simple. Modules are the building blocks of Verilog designs; You create the design hierarchy It could cause problem in debug (for example: locating the port which is  This repository contains an implementation of a GPIO agent, written in UVM 1. Digital System Designs and Practices Using Verilog HDL and FPGAs @ 2008-2010, John Wiley 15-1 An example of 8-bit GPIO. Electronic's for Design and Software 819 views For all inout ports, you can read the data at any time. Once you programmed the FPGA, open up SoftConsole to edit your application. P , Bhargav Tarpara P. Overview. Perform the same steps as you did for the UART drivers. Create a new project, create a new Verilog file as you did in lab one and copy the the following   Fully functional VHDL and Verilog UART, Serial Port, RS232 example for an FPGA. Initialize the microcontroller; Enable the clock; Setup the GPIO for the LEDs; Setup and initialize the ADC; Read  Do you have a simple example? If so please send it to me (jrodrig@cadence. Then, include the gpio driver header file For example, I have tried the The examples are i Verilog and what I need is VHDL. 1) Note: you will need the Xilinx Vivado Webpack version installed on your computer (or you can use the department systems). And without second, no third and so on. First, we add the GPIO drivers created by the MSS Configurator. 03. To generate the simulation design example from the source files for a Verilog simulator, run the following command in the design example directory: quartus_sh -t make_sim_design. inverting tristate buffer Tri state buffer logic in Verilog and tristate buffer testbench. tcl. Basically we will set the parameters of the clock divider. This details an SPI master component for use in CPLDs and FPGAs, written in VHDL. v (generates BCLK from FPGA clk), i2s_tx. xise. It has an ARM7 processor (LPC2138) and a Cyclone FPGA (EP1C3), connected by a SPI bus. Electronics - Verilog - Blinking a LED with GPIOs Submitted by Mi-K on Saturday, April 19, 2014 - 5:48pm As you certainly liked this Altera DE1 tutorial for blinking a LED on the board , you will love this one by doing the same easy thing but with GPIOs . LEDs connected to GPIO pins flashing instead of constantly on. It has inputs, outputs and it functions as per its intended design. This shows how easy it is to implement a clock divider to generate a square wave. Micro-studios. This is the source package for the Prototype Engineering FPGA shield Green Flashing LED example. 2 Application Over an Operating System (Linux) Running code over a linux operating system has several advantages. 자일링스의 Zynq All Programmable SoC를 이용한 첨단 임베디드 시스템 설계 - Duration: 46:47. Serial Example Setup. 00a) 2 www. Arduino . Thus this timer example in Verilog could be seen as an Hello World exercise. EECS 373 Lab 3: Introduction to Memory Mapped I/O For the GPIO write example, it is a subset of the address You will NOT have to write this Verilog. In this project we are atomizing the functions of the GPIO core by writing the code in VERILOG and simulating it in QUESTASIM. Always use non-blocking assignments inside clocked processes and blocking assignments in combinatorial blocks. I have been searching through other posts and looking for a the most straightforward/simple tutorial or example to run for DMA between PS and PL (haven't found anything great or the posts are 3+ years old) . For more information about the different design entry methods, refer to the help files in Quartus II or MAX+PLUS II software. AC326: GPIO Expansion Using UART Design Example App Note . A simple clock divider can be implemented by using a counter to count incoming clock pulses and toggle the output when the number of input clock pulses reaches a specific count. The MOSI can be clocked either on rising or falling edge of SCKL. Figure – GPIO agent example use case 'reg' and 'integer' are the example of variable group, which can be synthesized. The data width is 8 bits. So far we learned a few things about Verilog and how to create a module in Verilog and run a simulation. For example, in a 2×1 multiplexer, there is one select switch and two data lines. Sorry for the slow updates - life is getting in the way of my hobbies, but I am working on a big project The GPIO two connectors are directly controlled by the FPGA! 8. A Verilog module is a design unit similar to a black-box, with a specific purpose as engineered by the RTL designer. The HDL is not packaged into IP-XACT format, and is For the GPIO input mode, I use the input mode with internal pull-up, therefore the button circuit is active low (when the button is pressed, the logic in input data register is “0”). I hope Ive understood the question correctly. int main(void). v) file as input (example shown below) and This is nicely described on https://hackaday. An application note from Philips discussing in depth multiple aspects of I2C. , something is unclearly stated) in this web page This document presents a (very) quick introduction to the use of Quartus to design a system using verilog. To get an opportunity to test our newly acquired SPI knowledge, we use a Saxo-L board. Chapter 15: Design Examples An FPGA is a crucial tool for many DSP and embedded systems engineers. This GPIO core requires simple output and/or input software controlled signals and implements the functions that are not implemented using dedicated controllers in the system. We choose a pure RTL design approach during this lesson. Learning Verilog is not that hard if you have some programming background. Data transmission begins on the falling edge of SS, then a number N of clock cycles will be provided. For more information on using this example in your project, go to: How to Use Verilog HDL Examples; MAX+PLUS II Help GPIO Intel® FPGA IP User Guide Intel ® Arria ® 10 and Intel® Cyclone® 10 GX Devices Updated for Intel ® Quartus Prime Design Suite: 18. 04 AXI GPIO v2. It will be a wire. inverting tristate buffer Example Verilog code for the Prototype Engineering FPGA shield - wramsdell/Verilog_Example. io/project/7982-cat-board/log  Visual Stduio Code for Verilog Coding · Xilinx FPGA Boot sequence · Zynq AP Gpio LED Hello World Example · Xilinx Zynq Vivado GPIO Interrupt Example  Using the GPIO peripheral and the supplied drivers, control some pins to flash LEDs on . Viewed 39k times 7. Inspect the waveform and make sure that our Verilog module is working as expected. I'm not completely inexperienced with verilog but feel I'm missing something fundamental here rather than just having a simple typo in my example. Control is realized through an This example implements a clocked bidirectional pin in Verilog HDL. Although actually, to make it easier to see that the program works correctly, I’m going to set the center LED to B and the four outer LEDs to NOT B. Latches are not recommended for fpga designs. 2. The GPIO output mode for the LED is open-drain mode and also active low. V. Product Brief · Migration Documents · User Guides · Code Examples by Application,Function · Code Examples · Code Module Library · Verilog Models · IBIS  Jan 13, 2016 IO Tiles: Each IO tile connects to two PIO pins and has one fabout For example: Most of the interconnect is explained in the section on LOGIC. Active 4 years, 11 months ago. The scaling factors for SCK from master clock can be 2, 4, 8 & 16, which can also be reduced further. Skip navigation Is there a simple example on how to use clock on KC116? Kit is such that I can rather easily get a wire based Verilog design working. We don’t spend much time on Behavioral Verilog because it is not a particularly good language and isn’t useful for hardware synthesis. PVerification Technical Assistant 42TAbstract 42T— General purpose input/output (GPIO) is a generic pin on an There are six different switch primitives (transistor models) used in Verilog, nmos, pmos and cmos and the corresponding three resistive versions rnmos, rpmos and rcmos. --Amr Re: Reading data form GPIO You can send data from outside world to inside FPGA through GPIO's . I mean, VHDL and Verilog are so low level that it feels like it would take weeks to write even a simple finite state machine! Luckily, we can actually do a lot of really cool things on the Virtex 7 (or whatever board you're using) without writing a single line of Verilog or VHDL! I've attached the code in 4 Verilog files: Basys3_Abacus_Top. There are a few folders and files inside the example_design folder. ucf file under verilog/src (or vhdl/src, they're the same). In this lesson we continue our exploration of AXI Stream Interfaces. verilog gpio example

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