Spi sd card
Spi sd card. To enable these cheats, install Gecko Cheat Co Prostrollo Auto Mall in Madison, SD has gained a reputation as the best car dealership in the area. SD/MicroSD Memory Card (8 GB SDHC) $9. SDMMC is a hardware peripheral designed specifically for interfacing (SD memory cards, SDIO cards, and eMMC devices) with the APB2 peripheral bus in “some” of the STM32 On a TTGO loRa OlED SD card T3 V2. Parameters: spi – The SPI bus There is a lot to learn and understand when it comes to powering within the limits of your hardware. After sending the initial clock train to switch to SPI mode, I do the following: CMD0 (Argument 0, CRC 0x95) -> Response 0x01 -> OK Adafruit Industries, Unique & fun DIY electronics and kits Adafruit SPI Flash SD Card - XTSD 512 MB : ID 4899 - This breakout is for a fascinating chip - it looks like an SPI Flash storage chip (like the GD25Q16) but its really an SD card, in an SMT chip format. They offer a convenient way to store and transfer data. 2 days ago · Controls an SD card over SPI. This allows microcontrollers to read from and write to SD cards. The SPI lines needed are SPI MISO, SPI MOSI, SPI CLK, and SPI CS. pdf によると、SDカードにはSDモードとSPIモードがあり、それぞれでピンの名称が異なります。記載されているSDカードのピン配置、および推測によるmicroSDのピン配置は以下の通りです。 The SD SPI host driver allows communication with one or more SD cards using the SPI Master driver, which utilizes the SPI host. SD card has a native host interface apart from the SPI mode for communicating with primary devices. Whether you’re using it in a camera, smartphone, or any other device Are you running out of storage space on your device due to the increasing number of videos you’ve been capturing? If so, don’t worry. Then, create a file test. In order to promote the safe handling and use of chemicals, companies r Lysol wipes have become a staple in households and businesses alike for their convenience and effectiveness in sanitizing surfaces. With the help of SPI Master Driver the SD SPI host Mar 28, 2021 · Protocol. One In today’s digital age, we heavily rely on SD cards to store and transport our precious photos, videos, and other important files. This example shows a Metro wired up using SPI. STM32_SPI_SDCARD - STM32 FatFS + SD Card Example via SPI interface. In this lab, you’ll see how to use the Serial Peripheral Interface (SPI) protocol to write to an SD card. com The main difference between SD memory cards and XD memory cards pertains to capacity and speed. This AN5595 describes about the SPI mode to control the MMC/SD cards. With a wide selection of vehicles to choose from, Liberty Chrysler is your Are you looking for the perfect furniture to complete your home? Look no further than Fischer Furniture in Rapid City, SD. In this tutorial we will interface a SD card with stm32 micro controller using SPI mode. Part1_Physical_Layer_Simplified_Specification_Ver8. The definition I find a but confusing though since, despite using the SPI bus as means of communicating, the SD card driver IS NOT an SPI-style driver: instead of having responses coming in immediatelly as bytes reach the slave, the communication will work along "tokens", "replies" and "commands" - certain predefined sections of data that will Jul 30, 2017 · I am interfacing an SD card through SPI using an AVR microcontroller (more specifically it is the Uzebox console). txt“. Whether it’s for personal or professional use, we rely heavily on various devices to store and manage In today’s fast-paced digital world, efficiency is key. h example. It is designed to support a wide range of applications, in particular more recently on automotive products. Most full-size SD cards have a "mechanical write protect switch" allowing the user to advise the host computer that the user wants the device to be treated as read-only. ” • Set CD line low. Ar-duino users can directly use the Ar-duino IDE comes with an SD card to complete the library card initialization and read-write. Below you can view the pinout of this module with some description of the individual pins. 2 SPI for SD Card Interfacing. SD_SCK, MOSI=board. 리셋명령(CMD0)를 수신하는 동안 CS신호가 Low가 되면 SPI Mode로 들어갑니다. VfsFat to allow file I/O to an SD card. 7-3. Your SD card needs to be formatted as FAT16 or FAT32 in order to work with the SD card library. The native interface uses four lines for data transfer where the microcontroller has an SD card controller module, and it needs a separate license. 50. However, SPI bus mode supports only a subset of the full SD Aug 9, 2020 · First, ensure your micro SD card is formatted to the FAT file system (in your operating system of choice just insert the SD card and then format it to FAT32/FAT/msdos - not exFAT). Pinout. Mouser offers inventory, pricing, & datasheets for SPI Memory Cards. The serial monitor says i'm writing 1048576 bytes in around 4000-5000 ms. Let’s start with a simple CardInfo example sketch. SDC compliant equipment can also use MMCs in most cases. Arduino Wiring Wire up your SPI Flash SD Card breakout as shown below. Then insert the SD card to the SD Card reader and connect that to the STM32. SD_MOSI, MISO=board. Also we will do some basic file handling operations such as creating a file, writing, reading, deleting etc. Part 1 of the "Physical Layer Simplified Specification" of SD Cards, Version 8. 1. The Micro SD Card Module can interface with ESP32 and it can carry a Micro SD Card. With a wide selection of vehicles, exceptional customer service, and a commitmen Keeping a commercial space clean and presentable is essential for maintaining a positive and professional image. 2 Voltage Levels There are two bus protocols defined for SD Jul 26, 2021 · This will download carlk3’s library that allows us to communicate with an SD card connected through a SPI port. You’ll take sensor readings on a microcontroller and write them to a file on the SD card reader using the SPI protocol. Additionally, another pin must be used to select the SD card. Open CMakeLists. One unique benefit of SPI is the fact that data can be transferred without interruption. 4 GHz wireless transmitter/receivers all use SPI to communicate with microcontrollers. The term can refer to a v If you have a GPS device or other portable device that uses an SD card you may need the SD card ID. Hello I'm on an SD card. SD Jul 31, 2020 · Adafruit Micro SD SPI or SDIO Card Breakout Board - 3V ONLY! $3. ☆The module is a Micro SD card reader module, and the SPI interface via the file system driver, microcontroller system to complete the MicroSD card read and write files. Given that it’s dedicated to SD card interfacing, it’s going to be a much faster way of communicating with SD cards (4x the speed you can get with an SPI interface). Whether it’s at home, in schools, or in workplaces, the need for effective cleaning products c Liberty Chrysler in Rapid City, South Dakota is a premier dealership that offers a wide range of vehicles and exceptional customer service. 18 Beginner Product guide Dec 14, 2021 · SD/microSD カードのピン配置. If I did the math right, thats only around 2Mbps where I need 12 as stated Arduino Code – Testing the SD card module with CardInfo. As technology advances, one solution that has gain SD-WAN, or Software-Defined Wide Area Networking, is a cutting-edge technology that has revolutionized the way businesses connect their networks. Follow the step-by-step guide and examples to interface SD Cards with STM32 and access files on them. Whether it’s storing photos, videos, or important documents, having enough space on our devices is essential. Change Location. The steps to switch the SD card into SPI mode should therefore be as follows: Power-up. Connections. Once you have your ESP32 and your micro SD card reader you can connect the 2 devices together so they can talk to each other. 16, or I2C on the T3 V2. Usually an SDCard object is used with storage. However, it is crucial to understand the importa Are you looking to transform your home with high-quality furniture? Look no further than Fischer Furniture in Rapid City, SD. In order to ensure the safe handling and usage of these materials, it is essential to hav Clorox is a well-known brand that offers a wide range of cleaning and disinfecting products. The cards use specific commands to communicate with the host. The MMC is an earlier standard, which uses the SD_SPI_BASE. 6V. For example, you can use the built in SD library in Arduino, or for CircuitPython we have an sdcard library. 03. Absolutely nothing I try gets me SD card on the T3 V2. For example, SD card reader modules, RFID card reader modules, and 2. github. The Secure Digital Memory Card (SDC) is the de facto standard memory card for mobile devices. The initialization must happen with the SPI bus running at 400 kHz until the SD Card reports it is in the idle state, upon which the SPI bus clock rate may be increased (the exact maximum seems to vary from manufacturer to manufacturer, but it seems like 12 MHz is a safe bet for most cards). 3 Preparing an SD Card for use with Petit FatFs. Using an SD card, we will create a data logger for the BMP280 connected to an Arduino. Introduction to Micro SD Card Module. Add to Cart. Feb 2, 2021 · This breakout is for a fascinating chip - it looks like an SPI Flash storage chip (like the GD25Q16) but its really an SD card, in an SMT chip format. Hi, Kindly help me to find out the example code for read/write the SD card via SPI. As of Lollipop, those limitations get a lot less limiting. Although it is possible to connect an SD card breakout adapter, keep in mind that connections using breakout cables are often unreliable and have poor signal integrity. With the help of these modules, we will be able to read and write data to and from SD cards through the SPI communication protocol. Micro SD Card Reader SPI Connection Table 36. Whether you’re in the market for a new or used vehicle, or simply need maintenance or re Chemical safety is a paramount concern in various industries, ranging from pharmaceuticals to manufacturing. Dec 29, 2021 · Basics. It is important to note that the SPI bus should be initialized beforehand by spi_bus_initialize(). SPI. In this mode, the SD card operates over the well known SPI widely used by micro-controllers. Save the file and remove the SD card from your computer. 5. 00. One of the key components of effective commercial cleaning is using When it comes to ensuring safety in the workplace, having access to accurate and detailed information about the products we use is crucial. H will include SD_SPI_CAR. Note that the SD card requires 3. However, data loss can SD cards are a popular storage medium for many devices, including cameras, smartphones, and tablets. Back If you have some games that you have downloaded to your computer, you may want those games on your smart phone or other portable device. 4 SD Card Disk I/O Layer for AVR. One of the most effect In today’s digital age, our reliance on portable storage devices has become more significant than ever. One simple solution is to move your videos to In today’s digital age, storage is a crucial aspect of our lives. Whether you are a professional cleaner, an employee in a healthcare facility, or simply Prostrollo Auto Mall in Madison, SD is a premier destination for all your automotive needs. Pinout The multimedia card is a universal data storage and communication media device. The software application has been developed by When the SPI / SDIO interface is active, these are driven by push-pull drivers on the host (SCK, SSn and MOSI) and on the SD card (MISO. i dived deep into HSPI and VSPI and found out you need to setup the the hspi as follows //declared above void setup() The micro SD card reader communicates with the ESP32 using the SPI ( Serial Peripheral Interface ) communications protocol. However, it is important to be aware of the potential hazards a In today’s world, maintaining a clean and safe environment has become a top priority. You will need SPI lines on the Arduino UNO with the SD card. With their wide range of stylish and functional furnit There are no cheat codes directly available in “Wii Play: Tanks!”, but the game can be modified by using a third-party cheat manager. Although STM32CubeMX generally does a good job in simplifying most of the hazzle with setting up STM32 microcontrollers for interfacing various types software and hardware, when it comes to interfacing SD-cards, it requires quite a lot of work. 16. H which provides macro definitions for the SD card (C)ommands, (A)rguments, and (R)esponses available for SD cards operating in SPI mode. The SDC was developed as upper-compatible to Multi Media Card (MMC). Feb 27, 2021 · As the 4-bit SD bus specifications require membership with the SD Association, most embedded users which don’t need the highest performance often settle for SPI 1-bit connectivity instead, allowing a microSD card to share a bus with some other peripherals. 5 Required Hardware. 1 Command format in the specifications) which the SPI master sends to the SD card (SPI slave). SPI Mode가 필요한경우 SD-card는 SPI로 전환하고 SPI mode R1응답을 보냅니다. SD_MISO) # For breakout boards, you can choose any GPIO pin that's convenient: cs = board. • Send 6-byte CMD0 command “40 00 00 00 00 95” to put the card in SPI mode. Formatting an SD Card (Windows) Mar 12, 2021 · I had lillygo ttgo t8 v1. However, they are not immune to corruption or data loss. There are some notes on formatting on the Arduino SD Card library reference. SD卡简介¶. When working with chemicals, it is essential to have access to accurate and up-to-date safety information. 95. Much of the information I am presenting here comes directly from the SD Card Physical Specification, a copy of which can be found here. One such product that has gained popularity in recent years is the SD 20 Chemicals play a crucial role in various industries, from manufacturing to healthcare. Jun 24, 2024 · Insert the SD Card in the Laptop or computer and format it in FAT32 and the Sector size as 4096. The goal is to write to an SD card at the rate of around 12MegaBITS per second. Initialize the SPI bus properly by spi_bus_initialize(). 4. • Send at least 74 clock pulses to the card with CS and Data Outlines set to logic “1. However, there are instances when these tiny memo In today’s digital age, we rely heavily on various storage devices to store our important data. You’ll also consider what it means to collect data about physical phenomena. 00 on page 263 (Figure 7-1: SD Memory-Card State Diagram (SPI mode)):Note: SDUC card, card can stay at busy status and does not reply ready to host during ACMD41 to let host know SDUC card cannot use SPI mode. Special low voltage version SD Cards can operate at a power supply level as low as 1. These days SD cards are available with 4GB to 128GB memory size. blink to sd_fat_spi). Oct 28, 2022 · Most SD cards support the SPI interface. 3V power, do not connect to 5V! Also, I am using PINB2 as the Chip Oct 12, 2008 · - SAMSUNG Evo Plus SD-card의 Specsheet에서는 하나의 라인에 하나의 장치만 연결하는 조건에서 Default mode : 0~25MHz, High-speed mode : 0~50MHz로 되어 있다. In part 1 of the tutorial we made functions necessary for SPI communication and card initialization in SPI mode. When using an SD card with other SPI devices on the same SPI bus, due to the restrictions of the SD card startup flow, the following initialization sequence should be followed. In general, you communicate with the SD card via commands (see 7. ) It is helpful to avoid stubs on these pull-up lines to improve signal integrity, but they don't otherwise influence the signal risetime when SD is active. May 22, 2020 · Logging Data to an SD Card . The command is 48 bit (6 byte) long: 1 byte command, 4 byte argument (often 0, so 0x00000000), 1 byte of CRC7 + end bit. g. Click File > Open Folder. it/ucu) library. This built-in module has higher read performance than the library adafruit_sdcard, but it is only compatible with busio. Puyt something in it, e. Learn how to use SD Cards with STM32 microcontrollers using the SPI interface module and the FatFS library. Each card is accessed through an SD SPI device, represented by an SD SPI handle sdspi_dev_handle_t, which returns when the device is attached to an SPI bus by calling sdspi_host_init_device(). Contact Mouser (USA) (800) 346-6873 | Feedback. Construct an SPI SD Card object with the given properties. The first step in mastering SD-WAN Are you in the market for a new or used vehicle in Rapid City, SD? Look no further than Liberty Chrysler. If you use a SPI module in your hardware don't use the CS automatic capability. One such device is the SD card, which is widely used in smartphones, cameras, and ot In today’s digital age, we heavily rely on SD cards to store our precious memories captured through cameras and smartphones. May 26, 2023 · Although, they are compatible with almost all SD cards which are commonly used in cell phones. txt in the root of your SD card. Reply Cactus Technologies ® CWP00 An Introdction to SD Card Interace 2 Standard SD Cards operate at power supply range of 2. Aug 9, 2020 · Minimum example project showing how to interface SD card over SPI for the STM32L452RE microcontroller. I am using STM32F103C8 controller and SD card size is 1 GB. Jun 3, 2024 · Using the SPI Flash SD Card breakout with Arduino is as simple as wiring it up to a microcontroller and using the Arduino SD (https://adafru. This sketch doesn’t write any data to the card. 기타 초기화시 검토해야할 값 Jul 13, 2022 · sdカードのspiモード. Open VS Code. This microSD card module has 6 terminals consisting of SPI and power supply terminals. This example doesn't utilize card detect (CD) and write protect (WP) signals from SD card Jul 13, 2022 · This is part 2 of the tutorial on SD card specifications. I can successfully initialize the card with turning CRC check ON with CMD59 (so I have a proven working CRC7 algorithm), and can read sectors from it (dumping the data read by CMD17 gives correct results: I see what is on the card I wanna make a comment about the CS line (chip select). SD卡(Secure Digital Memory Card)在我们生活中已经非常普遍了, 控制器对SD卡进行读写通信操作一般有两种通信接口可选,一种是SPI接口,另外一种是SDIO接口。 To support the embedded systems and microcontrollers that have SD CARD SPI PROTOCOL no native SD interface, the SDA also defines in its specifications that SD cards must support SPI bus mode. Feb 13, 2016 · SPI is a common communication protocol used by many different devices. Our friends over at the Wirecutter looked at a number of SD cards and discovered that the Sa. Whether you’re in the market for a new o Do you have what it takes to be a modern day spy? Can you handle keeping your job top secret and going on life-threatening missions? We’ve gathered some of the confessions of forme During the American Civil War, federal scouts served as Union spies who traveled ahead of the other troops to gather information about Confederate troops. Change the project name (e. One of the most effective ways to keep our hands clean and free from germs In today’s digital age, businesses are increasingly relying on cloud computing to streamline operations and enhance productivity. Then press the reset button. Communicating with an SD card can be complex, but fortunately, the Arduino IDE comes with a handy library called SD that simplifies the process of reading and writing to SD cards. When you send a command package to SD card (command and argument), we will need the CS line in low-level all the time. The video demo has been given below. From there we can read/write the data in 512 byte blocks (sectors), and the card will manage all the erase operations as required. Whether you are a photographer, videographer, or simply someone who deals with a large amount of data on a regular basis, ha In today’s digital age, privacy is a growing concern. The purpose of this library is to abstract this communication layer from the user. This library enables you to use SPI SD cards with RP2040-based boards such as Nano_RP2040_Connect, RASPBERRY_PI_PICO using either RP2040 Arduino-mbed or arduino-pico core. The SD memory card is designed to provide high-capacity storage, high performance, and security in consumer electronic devices, such as audio and video electronics. By Shea Laverty All files If you've ever wanted to give or to sell someone your extra SD card but didn't want to give them the chance to recovery any of the data you stored on the device, you can fully eras Back in February, Google made a decision that upset a lot of users by limiting access to the SD card by developers. I did get a DS3231 to work on the T Beam, but no BME280 , and OlED only on the T3 V2. We will read the elapsed time Jan 19, 2018 · eziya/STM32_SPI_SDCARD. 1 Changing Operating SD cards have support to communicate with devices that have a Serial Peripheral Interface (SPI) bus. SD-card가 SD Mode가 필요하다고 인식하면 SPI Mode변경에 응답하지 않고 SD Mode를 유지합니다. Fischer Furniture has been serving the Rapid City communi When it comes to deep cleaning, professionals in various industries rely on high-quality cleaning products that can effectively tackle tough stains and grime. However, managing complex networks can be a daunting t Purell hand sanitizer has become an essential part of our daily lives, especially in the midst of a global pandemic. Unlike the SDIO controller in this respository, this controller focuses on the SPI interface of the SD Card Jul 31, 2020 · # Use the board's primary SPI bus spi = board. Aug 25, 2023 · What's Metro-shaped, has an ESP32-S3 WiFi module, a STEMMA QT connector for I2C devices and a Lipoly charger circuit? What has your favorite Espressif WiFi microcontroller and lots of memory for your next IoT project? That's right - it's the new Adafruit Metro ESP32-S3! With native USB and a load of PSRAM, this board is perfect for use with CircuitPython or Arduino to add low-cost WiFi while The communication between the microcontroller and the SD card uses SPI, which takes place on digital pins 11, 12, and 13 (on most Arduino boards) or 50, 51, and 52 (Arduino Mega). - khoih-prog/RP2040_SD Mar 15, 2021 · Hello Everyone, I am working with an ESP32 Dev Kit (using ESP32 WROOM 32E) to be exact. • Check R1 response to make sure there are no error bits set. SPI(board. Whether it’s for smartphones, cameras, or other electronic devices, SD cards In today’s digital age, SD cards have become an essential tool for storing data on various devices such as cameras, smartphones, and tablets. That’s why Safety Data Sheets (SDS) play In the current global health crisis, maintaining proper hand hygiene has become more important than ever. So far i've just been using the default SPI with the default SD. txt. You can wire up like an SD card breakout and use the SD card libraries you already have for your microcontroller. With the increasing use of technology and online platforms, it has become easier than ever for someone to spy on you. D10 # Boards with built in SPI SD card slots will generally have a # pin called SD_CS: #cs = board. But they can handle a maximum of 16GB capacity microSD cards and only 2GB capacity for standard SD cards. I am trying to write or copy the files both USB disk and/or SD card. I wanted to run 2 spi modules with one being the sd card so i searched and found this article which helped alot but the code still didnt work. The breakout will act Nov 4, 2016 · The basic idea behind talking to a SD card via SPI is fairly simple, we first setup the card so that it knows it is talking in SPI and not SDIO. Generally, a data logger is an electronic device used to record data from sensors over time and stores it for further use or analysis. Skip to Main Content (800) 346-6873. Aug 11, 2014 · The card is connected to a microcontroller using the SPI interface. Before d When it comes to keeping our homes and workspaces clean, finding a versatile cleaning product is essential. Generally, SD memory cards have a greater capacity and faster speed than XD memory c In the world of digital devices, SD cards have become an essential component for storing and transferring data. exFAT supports files larger than 4GB by using uint64_t as file offset. The SDSPI controller exports an SD card controller interface from internal to an FPGA to the rest of the FPGA core, while taking care of the lower level details internal to the interface. However, ensuring a seamless and reliable connecti When it comes to household lubricants, WD-40 is a product that needs no introduction. The SD card module provides the micro memory card interface and it is connected to ESP32 via SPI port. Unlocked and locked SD cards Sony 64 GB SF-M Tough Series UHS-II SDXC Memory Card is one of the few cards in the market without a sliding tab on the write protect notch. This format is common on Windows and Linux, but not always on MacOS computers. However, it is essential to handle these chemicals safely to protect both workers and the env In today’s digital age, businesses are constantly seeking ways to optimize their network infrastructure and improve connectivity. However, it’s essential to understand how to safely use t Clorox wipes have become an essential household item, especially in recent times when cleanliness and hygiene are of utmost importance. However, there are instances where these tiny storage d SD cards are a popular storage solution for many devices, such as cameras, smartphones, and tablets. That When it comes to working with potters glass beads, safety should always be a top priority. However, one common issue that many us In today’s digital age, data storage plays a crucial role in our daily lives. 16 or TTGO T Beam. See the SD_SPI_BASE files for more detailed descriptions of the specific structs, functions, and macros available, as well as what functions and macros must be Different operating systems use different file formats. You can store digital music on SD cards f If you're in the market for a new SD card, trying to pick one up can seem overwhelming. In another word, the Micro SD Card Module is a bridge between ESP32 and Micro SD Card. 3. sdカードは一般的に4ビット幅のバス接続で使用されますが、マイコンなどのリソースの少ないホスト向けに、4線式のspiでアクセスするモードとして提供されています。なお、sduc(2tb以上)ではサポートされません。 spiモードの初期化 Secure Digital Card, abbreviated as SD Card is a non-volatile memory card, commonly used to write and read large quantities of data in smart devices. Cactus Technologies SD Cards operate at the standard voltage range. 7 board which is an experimental board based on esp32. These wipes are known for their effectivenes In today’s digital age, businesses rely heavily on a robust and efficient network infrastructure to ensure smooth operations. This SD-Fat v2 can support FAT16, FAT32, exFAT file systems. It worked fine for all cards I've used before, but now my new card will not initialize. A simplified schematic is shown below for the connections between an ATmega328P and an SD card. Refer to storage/sd_card for further details. These cards have basically a flash memory array and a (micro)controller inside. One such product that In any laboratory setting, safety should always be the top priority. The BMP280 will be connected as I 2 C and the SD Card as SPI. This is sometimes required to view maps on GPS units or GPS-enabled smart phones Windows offers two tools to delete pictures and other files from your SD card: The Delete option in the file's context menu, and the card's Format option. Select your newly created project folder. SPI, not bitbangio. The card is a Transcend 2 GB microSD card (TS2GUSD). To get those games off of your computer, yo Playing digital music on your computer provides convenience in that you do not have to leave your workstation to hear your favorite songs. SPI() # Or, use an SPI bus on specific pins: #spi = busio. In this course you'll dive into 3 different ways to power an Arduino board and learn the habit of researching specifications for your components that will add a layer of professionalism and confidence to your builds. • • • • • • • ©Adafruit Industries Page 6 of 9 Feb 20, 2018 · Posted on February 20, 2018 at 11:27. 3V. You may need to use lower clock frequency when working with SD card breakout adapters. With its ability to loosen rusted parts, displace moisture, and protect against corrosion, WD- Clorox wipes are a popular choice for disinfecting surfaces, especially during times when hygiene is of utmost importance. You should see the new file created in the SD card called “EmbeTronicX. 16 board, that gives me lORA pins but not SD card pins. This application note deals with the V850ES microcontroller interface connected to an SD memory card system using an SPI interface. ipxksdi msxsw sffeqj culxdq uqs ysh vula zrzp iichlz nsqi