Gpio expander

gpio expander 0 V GPIO Pins Selectable Device Address 6 mA Output Drive Interrupt Pin to Alert Processor of Status Changes Description The FXL6408 is an 8-bit I2C-controlled GPIO expander. GPIO expanders are gaining traction in highly-integrated mixed ICs (Integrated Circuits) of digital power processors. The FXL6408 is an 8-bit I 2 C-controlled GPIO expander. Ok, some technical documentation that you can find in the datasheet! PCA9555n has 16bit, that are configurable in 8 18-Port GPIO with LED Intensity Control, Interrupt, and Hot-Insertion Protection: MAX7316: 10-Port I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection: MAX7315: 8-Port I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection: MAX7313 A pair of MCP23017 expanders are included on the board allowing you to connect up to 32 digital inputs or outputs to the Raspberry Pi. Product Description: The I2C-16I/O board is a I2C 16 bits General Purpose Input/Output On board IO expanders IC PCF8574T, provide extra 8 IO ports. They also do this with industry-leading functionality, including agile I/O. Cascade GPIO expander (74HC595) Showing 1-8 of 8 messages. Expand your project possibilities, with the Adafruit AW9523 GPIO Expander and LED Driver Breakout - a cute and powerful I2C expander with a lot of tricks up it's sleeve. On addition to this, this library is including mbed-SDK-style APIs. . The LEDs provides a nice visual output. GPIO expanders work like this: you have The PCAL9555, PCAL9554 series is a low-voltage 16-bit/8-bit General Purpose Input/Output (GPIO) expander with interrupt. \$\begingroup\$ This is a more complicated and specific way of saying "every GPIO expander is a PWM expander, you just have to keep changing the pins". Helios64 provides 16 GPIOs via a 20-Pin header (P5). SX1503(I2C0) # sx1503 is connected on I2C0 pinmap = { # now add pins definition for the expander 100: 7, # pin "100" maps to pin 7 on sx1503 101: 14, # pin "101" maps to pin 14 on sx1503 102: 15 # pin "102" maps to pin 15 on sx1503 } gpio. Kernel configuration. When configured in Input Mode, the FXL6408 monitors the input ports for data transitions and signals the baseband by asserting the /INT pin. You can set each pin to be a digital output (high or low) or as an input, with an internal pull-up if you like! This Adafruit GPIO Expander Bonnet will give you even more digital deliciousness - 16 more digital input/output pins are yours for any desire you have. Adafruit Industries, Unique & fun DIY electronics and kits Adafruit AW9523 GPIO Expander and LED Driver Breakout [STEMMA QT / Qwiic] : ID 4886 - Expand your project possibilities, with the Adafruit AW9523 GPIO Expander and LED Driver Breakout - a cute and powerful I2C expander with a lot of tricks up its sleeve. 1: 12/23/2010: ZIP: 161. This is a handy general purpose input/output Qwiic board. The MCP23017 has 16 IO pins which the MCP230xx driver uses as D0 - D15. 8 of these modules are cascadable, giving you a possible total of 128 additional GPIO on your micro controller, like an Arduino development board, for example. It is powered through the host Raspberry Pi using the GPIO port or via the on-board power connector. If you want to use the same MCP23017 port expander chip directly with i2c instead of WiringPi, Matt Hawkins has done a 3-part series on how to do that here. Example: I am hoping to find a single chip solution to isolate 24 GPIO lines. The GPIO Expander Keypad and LCD Demo Board is designed to demonstrate the use of the MCP23S08/17 (SPI interface) and the MCP23008/17 (I2C interface) devices in a keypad and LCD example. 0mm (44 pins) Status: Mass Production: Mass Production Interface - I/O Expanders 16 Bit SPI GPIO Expander Enlarge Mfr. It also has three I2C address pins (A0, A1, A2) that can be individually pulled HIGH or LOW to select the address of the device from (0x20-0x27). They are provided from many kinds of chip, and are familiar to Linux developers working with embedded and custom hardware. It is possible to expand up to 64 additional GPIO ports using some MCP23008 chips connected via I2C interface. The MCP23X17 (16-bit) devices interface to a 2x16 LCD module and the MCP23X08 (8-bit) devices interface to a 4x4 keyed matrix. Once configured, you can use any of the 16 pins as pins for your projects. Selectable by backside jumper, default to ground. The Microchip MCP23S17 and MCP23017 are popular options, and can be configured as output or GPIOs can be used for variety of purposes during embedded development and in the end-product as well. An example of the latter is the Realtek ALC260 IC, which provides eight GPIOs along with its main function of audio codec. The expander connects to the existing I2C bus on the Pi, and since many devices can share the same I2C bus, it doesn't use up any additional resources, except that it is slightly slower and The Quick2Wire Port Expander board for the Raspberry Pi, gives you an extra 16 GPIO pins which can be used for digital input or output. Support cascading, and you can use at most 8 modules to extend 64 I/O at the same time. Study it to compare with the standard blink. This allows them to drive devices with higher load such as LEDs. 5-V to 5. Pico Omnibus lets you plug in two Pico Packs or Bases at once*, or you can use the extra set of male GPIO pins to easily attach other devices, jumper wires or circuitry - very useful for prototyping. 6 V: 1. Each GPIO pin is configured via software as an input or output—configured as 4 banks of 8-bit GPIO. 3V when active. – 16-bit I/O Port Expander – Operating Voltage 1. 99, 10/$152. 99 $ 7 . 1 512 IGPIO0/SCL0: GPIO I2C 2 513 IGPIO1/SDA0: GPIO I2C 8-Bit I2C-Controlled GPIO Expander 16-Pin UMLP T/R (Alt: FXL6408UMX) RoHS: Compliant Asia - 0. The outputs are grouped into two 16-pin connectors that have a matching ground pin. Once configured, you can use any of the 8 pins (PCF8574) or 16 pins (PCF8575) as pins for your projects. com I2C GPIO expanders provide a great avenue to reusing the existing design, while integrating new feature sets that meet consumer demands. Pastall RPi GPIO Breakout Expansion Board + Ribbon Cable + Assembled T Type GPIO Adapter 20cm FC40 40pin Flat Ribbon Cable for Raspberry Pi 4B/3B/2/1/zero 4. GPIO Expander for CP2 Datasheet Download (771. 47 KB) Updated. Using the Jetson Xavier/TX2/TX1 GPIO pins is primarily done using the Linux sysfs (for pins directly connected to Jetson) or I2C read/writes (for pins using I2C GPIO expanders). Examples of using a GPIO Expander 1/ Higher Current LEDs Example. The input default And there is a library for Arduino on Github, making it super easy to add this module to your Arduino project. Sie müssen JavaScript in Ihrem Browser aktivieren, um alle Funktionen in diesem Laden nutzen zu können. Initialization order can be important. Diodes' General Purpose IO Expanders (GPIO) products are available with I2C bus interface and 2 to 48 IOs. I2C 16-bit GPIO Expander. Microchips 16-bit GPIO Expander MCP23018 can sink 25mA per pin. Part # XRA1403IG24TR-F. The MCP23008 can also generate interrupts based on input, but we won't be covering that here. I2C - GPIO Port Expander What is I2C? I2C (eye-squared-cee) is a communication protocol that the Raspberry Pi can use to speak to other embedded devices (temperature sensors, displays, accelerometers, etc). 5-V VCCoperation. No Stock $11. - video 1 plays, set GPIO expander pin 2 active GPIO pins 13 – 16 can be configured individually by the Control Voltage block in the software. spi: can not register to master err I am making a project that requires more GPIO pins than the Raspberry Pi has. The four 8-bit ports use the same hardware configuration as the I/O 24 range. ESP01 Expander Series: Loads of people use ESP-01 in their projects. 1 pin; Interrupts micro if change on inputs of GPIO Expander . The PCF8575 device provides general-purpose remote I/O expansion for most microcontroller families by way of the I2C interface [serial clock (SCL), serial data (SDA)]. Communication to the GPIOs is via the SPI interface of the I/O 24 module which is implemented in the firmware. The operating voltage of the SX1503 (VDDM) can also be 1. 5225 Wiley Post Way, Suite 500. 8-bit I/O expander with I2C-bus/SPI interface [1] See Section 7. System details: Linux xilinx-v2016. With the IO Expander we can add analog inputs with just this board, making it an ideal drop in PORT_EXPANDER_I2C_ADDRESS is the I2C address of the port expander we are using. A GPIO expander is a component that offers a designer the ability to implement additional outputs and inputs on a microcontroller and microprocessor system. It was working great until I tried to also use a GPIO pin on the pi (not on the port expander) as an output. A general-purpose input/output (GPIO) is an uncommitted digital signal pin on an integrated circuit or electronic circuit board which may be used as an input or output, or both, and is controllable by the user at runtime. The breadboard consists of 800 points. The easiest way to get it working is by live-booting the Raspberry Pi Desktop x86 OS on your PC. I went for 3. The IXP family I/O expander is typically used when there is a need for additional GPIO input and output in an application. It includes a 16-bit I/O expander MCP23S17 with SPI clock speeds up to 10 MHz for higher throughput applications. The advantage of this module, that each port can be supplied independently with an operating voltage of 1. PCAL6534EVJ Datasheets | Interface - I/O Expanders IC GPIO EXPANDER 34B VFBGA42 By apogeeweb, PCAL6534EVJ, PCAL6534EVJ Datasheet,PCAL6534EVJ PDF,NXP USA Inc. GPIO Expanders expand two wire I2C-bus to multiple input/output signals. Edit Revision; Update Diff; Download Raw Diff; Find many great new & used options and get the best deals for Arduino PCF8574T I2C 8 Bit IO GPIO expander module & Raspberry re at the best online prices at ebay! This 16-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 2. Some of the products feature an additional INT (INTerrupt) output and/or a REST or OE (Output Enable) input signals. 62-3. GPIO Interfaces exposed by the HAL should provide dedicated zero-sized types for each pin on every interface or port, resulting in a zero-cost GPIO abstraction when all pin assignments are statically known. GPIO Expansion Using UART Design Example Table of Contents Overview In order to keep cost to a minimum, microcontroller chips typically have a limited number of general purpose I/Os (GPIOs) available, so external I/O expanders are needed to utilize the microcontroller’s built-in serial interfaces. This product is part of a series to tackle this issue. 32bit GPIO Expander Shield. 99 Get it as soon as Thu, Apr 8 GPIO expanders offer 8 and 16-bit general purpose I/O expansion, high speed data rates, low power, and wide operating voltage The GPIO expander shield provides the Anarduino Mini with an extra 32bits of GPIO. You can connect the microcontroller unit (MCU) port to or from any port (A, B, C, or D) to perform read and write operations. Keywords I2C-bus, I/O expander, GPIO, EEPROM Abstract One of the more common functions of the I2C-bus is to provide additional I/O port capability for a controller with out increasing the number of pins on the controller package. Hi all, Does anyone know how to use BrightAuthor to set output on the GPIO of the expander EM100? I need to trigger or set GPIO on the expander to high whenever a video is played! There are 15 GPIO PCF8574 GPIO expander library for AVR Atmega - v01 The PCF8574 is a silicon CMOS circuit. 6 V: Package: BGA 3. 2 Here is the relevant device tree: /* * HAMLAB specific features, mostly GPIO on I2C * * pca9555 I2 When an I2C GPIO expander is present, the pins on the expander will appear after the 4 FT4222H GPIO pins (i. GPIO Expander INT pin. GPIO expanders work like this: you have a board with some number of GPIO but not enough for your project – maybe you need more buttons or LEDs. 662181] spi-tegra114 3210000. The GPIO pin is a CMOS push-pull buffer or open-drain with a configurable pull-up resistor. It's no problem to use a SPI GPIO expander along with an opto-coupler but it would be sweet if I could get it in one package. The STMPE811 is a GPIO (general purpose input/output) port expander able to interface a main digital ASIC via the two-line bidirectional bus (I2C). It provides 8 GPIO each with an LED indicator, and goes to a pin in a dual row 100mil header. 2 KB *By clicking on Expand your project possibilities, with the Adafruit AW9523 GPIO Expander and LED Driver Breakout - a cute and powerful I2C expander with a lot of tricks up it's sleeve. The “pin# (source)” column of the table has details about which GPIO pins are sourced directly from the Jetson and which ones use an I2C GPIO expander for your carrier. GPIOs 0-127 are built in to the host processor. 2V to 5. Could you please give me a few lines of example how to realize this: - video 1 plays, set GPIO expander pin 1 active. 62-3. Each adds 8 GPIOs and up to eight can be connected through I2C. These ports are addressed via I2C. 1. SPI GPIO Expander - Source Code RD1073: 1. The I/O expander adds additional GPIO ports. CheckButtonStatus () communicates with the port expander to get the tactile switch status. I 2 C Port Expander with 8 Open-Drain I/Os. What's Hot! RFM95 LoRa HopeRF RFM95. IO P5 is connect to a This is a MCP23017-based hacker-friendly GPIO expander board. Each GPIO Interface or Port should implement a split method returning a struct with every pin. I still can't export a gpio from the gpio expander and I can't adjust the brightness of the LED using /sys/class/leds because this directory is empty. Expand your project possibilities, with the Adafruit AW9523 GPIO Expander and LED Driver Breakout - a cute and powerful I2C expander with a lot of tricks up its sleeve. The PCF8574 component allows you to use PCF8574 or PCF8575 I/O expanders (datasheet, SparkFun) in ESPHome. adafruit. Thanks for you support. This module is the 16 way GPIO expander for the I2C interface, and built with the MCP23017. c program. You can set each pin to be a digital output (high or low) or as an input, with an internal pull-up if you like! GPIO Expander For many applications, more general purpose I/O (GPIO) ports are required than those available on a microprocessor. GPIO Expander Expands the GPIO capability of a CONVERGE Pro 2 mixer by providing an additional 12 input and 12 output pins. [email protected]> I am hoping to find a single chip solution to isolate 24 GPIO lines. 80. See full list on tutorials-raspberrypi. A cute and powerful I2C expander with a lot of tricks up it's sleeve!. After power-up, the XRA1405 has internal 100K ohm pull-up resistors on each I/O pin that can be individually enabled. When configured as ADC channel, a GPIO cannot be used as a standard GPIO. > + Most of these parts are from NXP, though TI is a second source for > + some of them. 5×3. 99 See full list on sparkfun. But the spi register failed with “could not get #gpio-cells for /[email protected]”? kernel dmesg logs: [ 1. The MCP23X08 are 8-bit GPIO Expanders: • MCP23008: I2C Some of the I/O Expander GPIO pins can be configured as ADC channels. 50: I'm Interested: Recomended Products Shopping cart. This conponent library is compatible to basic operation os GPIO expanders: PCAL9555, PCA9555, PCA9535, PCA9539, PCAL9554, PCA9554 and PCA9538. Up to 4. They have an efficient data bus interface to reduce the I/O requirements of the MPU or MCU. Numato Lab’s GPIO devices provide an interface that looks like a Serial Port on your Operating System and thus effectively hiding the complexity of USB. Depending on how a device is activated The Sparkfun Qwiic GPIO is an I²C device based around the TCA9534 I/O Expander IC from Texas Instruments. Joystick common pin can connect to VCC or GND, to ease your programming. It’s connected to the ATmega328 via the I2C-Bus. It is best to think of an 8-bit GPIO Expander like adding another 8-bit wide digital port PCF8574 GPIO Extender run on the I2C bus, extending the 'IO Pins' which can be controlled by a single host I2C bus. The board consists of two MCP23S17 GPIO expanders, which are split up into four 8-bit ports (2 ports per MCP23S17). Sometimes, the number of GPIOs offered on a carrier board may not be enough to fulfill all the requirements. As you need 75, I suppose you go with the big brother of MCP23008 the MCP23017 which has 16 GPIO ports. Originally, it is used in modules to expand the GPIO Pins of a Microcontroller and it communicated with the microcontroller through I 2 C Interface. Again, I say a MCP23017, but it can be any GPIO expander supported. The TCA9539-Q1, a low-voltage, low-power IO expander, is a fully automotive-qualified I2C-controlled GPIO expander with a supply voltage range of 1. It can produce PWM signals, so you can dim LEDs. Expander Pi Expander Pi is a versatile digital and analogue expansion board. You can set each pin to be a digital output (high or low) or as an input, with an internal pull-up if you like! The MCP23017 component allows you to use MCP23017 I/O expanders (datasheet, Adafruit) in ESPHome. Based in Berg Germany, RAFI has manufacturing and customer support locations in Europe, North America, and Asia primarily servicing customers in the Industrial, Medical, Automotive and Transportation Industries. Then the chip driver’s probe() routine could pass that data to gpiochip_add(). This tiny little board becomes a life saver When you run out of pins on your Arduino. 65V to 3. These resistors serve two purposes. The operating voltage of the SX1503 (VDDM) can also be 1. 10000 $0. SparkFun Qwiic GPIO Out of stock DEV-17047 The Qwiic GPIO, based on the TCA9534 I/O Expander IC adds an additional 8 IO pins which you can read and write just like any … “GPIO expanders provide additional I/O ports while ensuring additional interconnections are kept to a minimum,” says Kinetic Vice President David Nam. I am trying to figure out how to specify which GPIO numbers the pins on the new expander get, and how to get both working. It is one of the many GPIO extenders available in the market. In this example, we'll be connecting an MCP23008 I/O expander to our Raspberry Pi. ti. Those GPIOs are provided via an 16-bit IO Expander PCA9655E connected to I2C bus 2. In this topic, you will use. He also has a great It is one of the many GPIO extenders available in the market. It provides general purpose remote I/O expansion for most microcontroller families via the two-line bidirectional bus (I2C-bus). 3300; 5000 $0. On addition to this, this library is including mbed-SDK-style APIs. 5V regardless of the port. Then the chip driver’s probe() routine could pass that data to gpiochip_add(). Numato Lab’s GPIO devices provide an interface that looks like a Serial Port on your Operating System and thus effectively hiding the complexity of USB. 91, 25/$339. 5V regardless of the port. They are especially useful in applications where pin count is limited on the microcontroller unit (MCU) or if remote inputs / outputs (I/O’s) are needed. Raspberry Pi GPIO Expander Software Allows Access From Voth PC And Mac 11:59 am December 5, 2017 By Julian Horsey The official Raspberry Pi Foundation has this week announced the release of new Jun 26, 2019 - 16-bit i2c GPIO expander board for Arduino from pcblab. 6V. It seems logical that I should assign the irq value to GPIO_IRQ_2_x. The PCF8574 (A) is a remote I/O pin expander board included in the MAKERbuino inventor’s kit (DISCONTINUED). 5V connecting easily to today's low core voltage chipsets in battery Using the MCP23017 port expander with WiringPi2 to give you 16 new GPIO ports; There’s some parts of WiringPi2 that I haven’t yet explored. It's no problem to use a SPI GPIO expander along with an opto-coupler but it would be sweet if I could get it in one package. On board MCP23008 for IIC interface, relay connects in the IIC, save the GPIOs of RPI and can cascading modules On board ULN2803 relay control Four relays mounted on board, but more relay can hook on it via the The STMPE1601 is a GPIO (general purpose input/output) port expander able to interface a main digital ASIC via the two-line bidirectional bus (I2C). First we will start out simple with counting from 0 to 255 in binary on eight LEDs. , for these reasons a lot of coders prefere the supereasy to use PCF series from NTX. Functional description The device interfaces to a host through either I 2C-bus or SPI interface (selectable through I2C/SPI pin), and provides the host with eight programmable GPIO pins. This design provides a solution that uses a Lattice PLD as a GPIO Expander. If any one of these is configured for voltage control, then the logic expander will turn on the 5V potentiometer power. 3V GPIO ports. 8 to 5. My first question is can someone explain w Hi , We want to use multi SPI devices(up to 8 or 6), so we need 8 gpio as cs signal and 8 gpios as interrupt signal. at the max 8 of these devices can be connected in a project to the I2C bus. Device drivers / LED support / LED Support for PCA955x I2C chips. These expanders have advanced drive capability than the I/O on a microcontroller and microprocessor system. The ESP-01 NanoBoard is a small “motherboard” for the famous ESP modules-01 (ESP8266) with some features for ease of use: Serial-USB adapter (CH340), 3. starting at physical pin #4, logical pin #516). $6. 2V to 5. It is one of the many GPIO extenders available in the market. SPI- and I2C-based IO expanders are yet another method for adding I/O to a low-cost microcontroller. 0. So, our Iris, Viola and Ixora carrier boards offers flexibility to use external GPIO expander chips via SPI, I2C interface. Flexible Embedded Systems Accelerate Demand for GPIO Expanders Up to 24 GPIO pins; on-chip RC oscillation: Up to 24 GPIO pins; on-chip RC oscillation: Power Suppy: 1. The STMPE2401 is a GPIO (General Purpose Input / output) port expander able to interface a Main Digital ASIC via the two-line bidirectional bus (I2C); separate GPIO Expander IC is often used in Mobile-Multimedia platforms to solve the problems of the limited amounts of GPIOs usually available on the Digital Engine. Some of the products feature an additional INT (INTerrupt) output and/or a REST or OE (Output Enable) input signals. The SparkFun Qwiic GPIO is an I 2 C device aimed at simplifying adding extra GPIO pins to a microcontroller. May 06, 2019 . The GPIO expander tool means you can connect a Pi Zero (original, W, or WH) to a regular PC with just a micro USB cable, no SD card required, and control the GPIO pins. Initialization order can be important. This program will blink the on-board LED at the same time as the one connected to the IO expander board. GPIO Read General Purpose Input/Output and GPIO documentation in Linux. So, the net gain is six more pins. The output is used to signal the microcontroller when any of the inputs state has been changed (from 1 to 0 or 0 to 1). $16. This enables devices to reference the gpio expander from Device Tree. MCP23017 Breakout Board 16 Channel I2C GPIO Expander for Arduino STM32 PIC With this breakout board, you can add 16 digital inputs / outputs to any micro controller with I2C interface. The GPIO extension adapter is of type T. GPIO Interfaces exposed by the HAL should provide dedicated zero-sized types for each pin on every interface or port, resulting in a zero-cost GPIO abstraction when all pin assignments are statically known. 0 out of 5 stars24 $15. GPIO. 3713; Buy Now . Diodes Incorporates released 16-bit I/O expander, which offers and ultra-low power solution to expanding the available GPIO on a microprocessor, microcontroller, ASSP, ASIC, or FPGA, using the ubiquitous I2C interface. \$\endgroup\$ – badz Jun 17 '12 at 9:52 Many manufacturers sell 20x4 LCD character displays with an integrated GPIO expander. Top of Page ↑ Avnet . They are especially useful in applications where pin count is limited on the microcontroller unit (MCU) or if remote inputs / outputs (I/O’s) are needed. 99 $ 7 . These interrupts will tell your program when data is available to be read as an input (high or low). I've designed it because I routinely don't have enough IOs in my ESP8266 and Raspberry Pi creations, and I've used my prototyping experience so that the board is convenient for everybody! The PI4IOE5V6416 is a 16-bit general purpose IO expander that provides remote IO expansion for most microcontroller families via the I In our system, we have a GPIO expander which is used to interface a rotating switch. The 16 GPIO pins of the MCP23017 can be used through the header pins at J3. com I2C GPIO expander are available at Mouser Electronics. The MCP23X17 (16-bit) devices interface to a 2x16 LCD module and the MCP23X08 (8-bit) devices interface to a 4x4 keyed matrix. I/O Expander GPIO. The following is a selection guide that Our industry-leading General Purpose I/O (GPIO) expanders provide 4, 8, 16, 24 or 40 general-purpose I/O pins for the CPU via the I 2 C-bus to help designers reduce board space and complexity while simplifying software development and lowering overall system cost. 7MHz. I've already enabled pca953x in the kernel config and added the below to the board file. This is typically a synchronous serial interface like SPI or I2C. sx1503 import sx1503 # a port expander driver for sx1503 # initialize port expander driver pdriver = sx1503. com/product/4919?utm_source=youtube&utm_medium=video Interrupts and GPIO Expanders (centipede) #5 May 02, 2018, 12:45 am. The LEDs provides a nice visual output. It is a great little MCU that enables plenty of IOT projects. 5V. 661962] OF: /[email protected]: could not get #gpio-cells for /[email protected] [ 1. It uses I²C Bus for communication. While performing other functions, this GPIO-expander chip can easily drive a blue LED as well. com SCPS243 – SEPTEMBER 2012 I2C CONTROLLED 18 CHANNEL GPIO EXPANDER Check for Samples: TCA6418E 1FEATURES APPLICATIONS • Operating Power-SupplyVoltage Range of • Smart Phones The GPIO Expander Keypad and LCD Demo Board is designed to demonstrate the use of the MCP23S08/17 (SPI interface) and the MCP23008/17 (I2C interface) devices in a keypad and LCD example. This tiny little board becomes a life saver When you run out of pins on your Arduino. The higher current drive capability of the GPIO expander allows you to drive additional LEDs. MCP23008 / MCP23017 GPIO Expander~ Technical Data from the manufacturer: * Microchip MCP23008 * Microchip MCP23017. . A separate GPIO expander is often used in mobile multimedia platforms to solve the problems of the limited amount of GPIOs typically available on the digital engine. Being An SPI Slave Can Be Trickier Than It Appears. Mouser offers inventory, pricing, & datasheets for I2C GPIO expander. I am trying to connect a Ti PCA9555 GPIO expander to a zynq-i2c controller and the expanders interrupt over zynq-gpio. * mmc_over_gpio * GPIOs of AR913x SoC * oldwiki GPIO Hardware GPIOs are commonly used in router devices for buttons or leds. This makes it an ideal level shifter chip for peripherals that are 5V and not natively compatible with the RPi's 3. The purpose and function of the pins are specified programmatically, directly in the sketch. It reads the GPIO register on the port expander and checks the value of the second bit which corresponds to the status of the switch. The XRA1200, XRA1200P, XRA1202, XRA1206, XRA1402, and XRA1404 are 8-bit GPIO expanders. A second output (P6) turns the LED on and off. 5 out of 5 stars 57 $7. User Manual Only need five pins of Raspberry Pi (RPI) to control it, 5V, 3V3, GND, SDA and SCL. Mouser Part # 701-XRA1403IG24TR-F. I'm trying to add a PCA9557 I/O expander to an arm-based system on an I2C bus. Compatible models include: > + Diodes' General Purpose IO Expanders (GPIO) products are available with I2C bus interface and 2 to 48 IOs. Bus Frequency 1700 kBits/s PCAL6534EVJ Datasheets | Interface - I/O Expanders IC GPIO EXPANDER 34B VFBGA42 By apogeeweb, PCAL6534EVJ, PCAL6534EVJ Datasheet,PCAL6534EVJ PDF,NXP USA Inc. These can be used as both inputs, and outputs at either 3. The output is used to signal the microcontroller when any of the inputs state has been changed (from 1 to 0 or 0 to 1). com on Apr 10 2020, 11:28 AM. The GPIO expanders are required in the development of tactile business phones. NET to display text on an LCD character display using an I2C GPIO expander. The voltage levels for either open drain or push/pull are independently configurable. The resistors used in the circuit are: Brown Black Brown (outer most resistors) – 100 Ohms Red Red Brown (inner most resistors) – 220 Ohms. You can easily build a driver circuit using a npn transistor as an inverter, connected to the typically open - drain output of the i2c LED Driver. gpio expander 1 Articles . 3V or 5V. 30 Quad GPIO Expander For Raspberry Pi Pico, Four Sets Of Male Headers For Connecting More Expansion Modules, USB Power Input Connector | Pico-Quad-Expander Package Included:1 x PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module PCF8574T (Red) This is the I/O extended module, which use for I2C interface, you can use two of the module to extend 8 I/O. You’ll find code in the Quick2Wire Library to drive it from Python, along with examples of use. For a system with noisy input, our GPIO technology also provides a seamless debounce function with programmable debounce time. The advantage of this module, that each port can be supplied independently with an operating voltage of 1. Instead of GPIO expansion, the I2C LCD Module is dedicated to drive a character LCD. 2V to 5. It presents a wealth of information on key market dynamics including drivers, market trends, and challenges as A port expander takes the data and controls the appropriate pins. 1 Vivado and Devicetree xilinx-v2016. Use the GPIO pins of a Raspberry Pi Zero while running Debian Stretch on a PC or Mac with our new GPIO expander software! With this tool, you can easily access a Pi Zero’s GPIO pins from your x86 laptop without using SSH, and you can also take advantage of your x86 computer’s processing power in your physical computing projects. But, You can use GPIO with I2C I/O expander. Quad GPIO Expander For Raspberry Pi Pico, Four Sets Of Male Headers For Connecting More Expansion Modules, USB Power Input Connector. c kernel driver. It provides 8 GPIO each with an LED indicator, and goes to a pin in a dual row 100mil header. OK Guys! john Main gave me a hand and even wrote the sketch for my project. As an input, the expander programs the polarity, latch, pull-up, pull-down and interrupt functions. “While the initial target for the KTS1620 is performance smartphones, GPIO technology is also widely used in industrial, consumer and automotive markets, allowing us to serve more customers Dual GPIO Expander for Raspberry Pi Pico, Two Sets of Male Headers JavaScript scheint in Ihrem Browser deaktiviert zu sein. Item# I2C-16IO. They only safely supply or sink (pull to GND) a maximum of 4mA approx. This I²C expander will add nine additional GPIO ports to your controller to be used as digital, or analog, inputs, or outputs. Add TCA6416 GPIO expander support. For information about configuring an I/O Expander pin as ADC channel, see Analog-to-Digital Converter (ADC) . 0×10. This is a handy general purpose input/output Qwiic board. PCF8574 I/O Expander¶. The chip has 3 address pins, which can be set up for 8 different addresses. A solution to this is to use an I2C GPIO expander, which is a chip that sits between the LCD and the Pi, and adds additional GPIO lines that the Pi can use. The MCP23017 has two interrupt pins INTA and INTB that are associated with GPAn pins and GPBn pins, respectively. An 8 Push-Pull Output GPIO/LED Driver with an RST Input Software Compatible with the MAX7324, MAX7325, MAX7326 and MAX7327 (16-Port GPIOs) The XRA120x is a GPIO expander with an I²C/SMBus interface, while the XRA140x is a GPIO expander with an SPI interface. This Adafruit GPIO Expander Bonnet will give you even more digital deliciousne The Raspberry Pi is an amazing single board computer - and one of the best parts is that GPIO connector! 40 pins of digital goodness you can twiddle to control LEDs, sensors, buttons, radios, displays - just about any device you can imagine. Than i'll try to control some stepper. The GPIO Expander Keypad and LCD Demo Board is designed to demonstrate the use of the MCP23S08/17 (SPI interface) and the MCP23008/17 (I2C interface) devices in a keypad and LCD example. The MCP23X17 (16-bit) devices interface to a 2x16 LCD module and the MCP23X08 (8-bit) devices interface to a 4x4 keyed matrix. Cascade GPIO expander (74HC595) Mauro Martellenghi: 7/3/15 1:45 AM: The Expander Pi plugs onto the GPIO port on your Raspberry Pi and can be securely fitted to the Raspberry Pi using the optional mounting kit. Control of the GPIO's is facilitated via the MicroController I2C interface, and it leverages the functionality of the PCA9538A I2C to parallel interface IC. c – this is the blink program adapted to use the 16-bit GPIO expander board. The outputs are grouped into two 16-pin connectors that have a matching ground pin. January 8, 2019 by Kerry Scharfglass 10 Comments . 3V regulator with resettable fuse on the USB, connector for an external power supply, optional expander 16 GPIO, I2C connector, GPIO connector (ESP-01), connectors for GPIO dell'espander, circuit for the automatic upload (Arduino IDE IO Expanders Semtech IO Expander products consist of General Purpose parallel Input/Output (GPIO) expanders, which are ideal for low power handheld battery powered equipment. The module is built on the 32-bit microprocessor ARM Cortex M0. Feb 21, 2021 (Market Insight Reports) -- The global GPIO Expanders Market Market is expected to grow at a CAGR of around 4% over the forecast period 2020 to The cam-i2c-mux part is the same as on the B01 devkit (TS3USB30), but since we ran out of usable gpio pins on the jetson, we had to use a gpio expander (PCA9536). The Digi I/O Expander provides up to 39 GPIOs that can be used to control external peripherals and read digital signals. Communication to the GPIOs is via the SPI interface of the I/O 24 module which is implemented in the firmware. For example, board setup code could create structures identifying the range of GPIOs that chip will expose, and passes them to each GPIO expander chip using platform_data. Choosing an MCU with the exact right amount of IO at the beginning of a project, may not be sufficient as requirements creep in and unforeseen engineering challenges occur during development. 5mm (36 pins) QFP 10. GPIO Expander It’s difficult to foresee the needs of your project from the start. Just adapt the config line to your chipset, the rest of the tutorial remains unchanged. Selecting the most optimal GPIO expander depends on the voltage range needed and the number of GPIOs being connected. Authored by dgr_semihalf. All that you need to operate GPIOs is a standard Serial Terminal Emulator such as HyperTerminal/Teraterm or your favorite programming language such a C/C++, Python, Perl, etc… Pins 21 – 28 are another 8 additional GPIO pins GPA0 – GPA7. The I/O expander adds additional GPIO ports. GPIO benefits run the gamut Expand click is an accessory board in mikroBUS form factor. I understand how to compile this driver into the kernel (using CONFIG_GPIO_PCA953X configuration option) and load it (using modprobe). Interfacing with the outside world is a fairly common Introduction. 3V is available at address 0x24: Now, two of the maximum of eight expanders are connected. An LED example with MCP23017 I2C GPIO expander GPIO expanders are experiencing increased demand in the electronics and technology segment to meet next-gen digital power processing requirements. A separate GPIO expander IC is often used in mobile multimedia platforms to solve the problems of the limited number of GPIOs typically available on the digital engine. Closed Public. Philips Semiconductors offers many different versions of I2C I/O port expanders. I've got some PCA9555n GPIO port expander and an arduino diecimila, i would like to blink a led with that IC first. The LEDs provides a nice visual output. The GPIO Expanders are both NXP PCA9557, which is supported by the gpio-pca953x. We've added useful labels to all three sets of connectors, so you can be sure that all those lovely wires are going to the right places. io: QGPIO: Qwiic GPIO expander based on PCF8574. It uses the I²C Bus for communication. So if you’re running short on usable I/O-Pins this is the thing you’re looking for! What is I2C? Pastall RPi GPIO Breakout Expansion Board + Ribbon Cable + Assembled T Type GPIO Adapter 20cm FC40 40pin Flat Ribbon Cable for Raspberry Pi 4B/3B/2/1/zero 4. The following photo shows an example in-use – it’s the Quick2Wire GPIO expander board which has a single MCP23017 fitted and all 16 IO pins brought out. c) and have some issues I hope someone could help me with. Four Sets Of Standard Raspberry Pi Pico GPIO Male Headers, USB-Powered Support Greg Steiert (@fpgahelper) has shared this Qwiic GPIO expander on Hackaday. I looked at the script samples you posted, but unfortunately there was no example about setting GPIO as outputs port. add_expander(1,pdriver The main goal of GPIO expander software is to use the Raspberry Pi Zero as an USB device connected to a personal computer, where the GPIO pins of the Raspberry Pi Zero will be made available to the host computer. I'm working with a port expander for the pi to run four stepper motors from python. 99 GPIO Expanders MaxLinear’s I2C/SMBus or SPI GPIO expanders add up to 16 general purpose I/O pins. Assume we also have a MCP23017 I2C GPIO Expander, then we can also add the optional I2C slave address. This article walks through the steps for setting up and using the GPIO expander software with a Raspberry Pi Zero on Fedora. 3V on pin 17. Greg Steiert (@fpgahelper) has shared this Qwiic GPIO expander on Hackaday. GPIO expanders work like this: you have a board with some number of GPIO but not The IO Expander is a solid choice if your project needs analog inputs, PWM or just 14 more GPIO pins. Are there Follow is the chapters involved in GPIO Expanders Market: Chapter 1 GPIO Expanders Market Overview Chapter 2 Executive Summary Chapter 3 GPIO Expanders Segment by Types (Product World) Chapter 4 Global GPIO Expanders Segment by Application Chapter 5 Global GPIO Expanders Market by Regions (2015-2027) Usage GPIO with I2C I/O expander There is no GPIO on external I/O port of ODROID-H2. Each GPIO Interface or Port should implement a split method returning a struct with every pin. It is best to think of an 8-bit GPIO Expander like adding another 8-bit wide digital port The i2c GPIO expander SX1503 has 2 x 8 bit IO interfaces. TCA6418E www. The original expander to the left is still available at address 0x20. Using the above, the existing I/O expander (with 16 GPIOs) appears in linux as /sys/class/gpio/gpiochip128, exposing GPIO numbers 128 - 143. Additionally, the I/O-8 Flex Channel Expander offers Audio-to-USB Bridging for integration with soft codec applications running on any host PC as well as control connectivity via GPIO and RS232. I2c based port expanders with PWM output are typically designed as LED drivers. GPIO expanders work like this: you have a board with some number of GPIO but not enough for your project - maybe you need more buttons or LEDs. Our IO expanders come in 4-, 8-, and 16-channels of IOs operating with a VDD range of 1. * GPIO Expanders A GPIO Expander is a device that provides a designer the ability to implement additional inputs and outputs (I/O) on a microprocessor (MPU) or microcontroller (MCU) system. I have connected a board with 10 LEDs and a button to it: The program outputs a single 10-bit binary count and pauses when the button is pushed. Edgewater Corporate Park South Tower. On the Marvell PXA310, GPIOs 2 through 127 share a common IRQ – number 10, or GPIO_IRQ_2_x. The character display connects directly to the GPIO expander, which then connects to the Raspberry Pi via the Inter-Integrated Circuit (I2C) serial protocol. This Adafruit GPIO Expander Bonnet will give you even more digital deliciousness - 16 more digital In this tutorial, I am going to talk about the PCF8574 8-bit GPIO Port Extender. The STMPE1801 offers high flexibility, as each GPIO Expanders provide easy I/O expansion using standard serial interfaces such as I 2C™ and SPI. MCP23017 has a high-speed I2C interface which supports the I2C frequency of 100KHz, 400KHz and 1. , for these reasons a lot of coders prefere the supereasy to use PCF series from NTX. NXP offers a wide range of GPIOs: 4-, 8-, 16-, 24-, 40-bit I/O as well as a variety of I/O types: open-drain, totem pole, with integrated pull up/pull down resistors. This Adafruit GPIO Expander Bonnet will give you even more digital deliciousness - 16 more digital input/output pins are yours for any desire you have. Now we know where each pin needs to go, we can wire the whole thing up. The outputs are grouped into two 16-pin connectors that have a matching ground pin. The reason for using GPIO expander is my microcontroller doesnt ve that much of pins, and on top of it, I am looking for some IC with galvanic or opto isolation, for reducing the size of the board, and I want to read the status of the outputs @ times. Extended pins on the GPIO connector allowing you to stack the Expander Pi along with other expansion A new study on the global GPIO expanders market has been published by SDKI (SDKI). [DEVICES] tmp = TMP102 mcp = MCP23017 slave: 0 x20 Hello, I am trying to add three pca9555 i2c gpio expanders by adding them to my board file (board-mx6q_qmx6. The four 8-bit ports use the same hardware configuration as the I/O 24 range. 16-BIT SPI GPIO EXPANDER WITH INTEGRATED LEVEL SHIFTERS SEPTEMBER 2011 REV. The Pimoroni IO Expander uses a programmable Nuvoton MS51 microcontroller, which is a cost effective and reliable means to provide the extra GPIO pins via the I2C interface. When configured in Input Mode, the FXL6408 monitors the input ports for data transitions and signals the baseband by asserting the /INT pin. All that you need to operate GPIOs is a standard Serial Terminal Emulator such as HyperTerminal/Teraterm or your favorite programming language such a C/C , Python, Perl, etc. It allows you to connect your Raspberry Pi to switches, lights, sensors, and many other devices giving you a way to communicate with the outside world. GPIO products are used to increase the I/O on an MCU or provide remote I/O using a serial interface. The system already has another I/O expander on a different I2C bus. But, the SX1509 can do so much more than just simple digital pin control. This conponent library is compatible to basic operation os GPIO expanders: PCAL9555, PCA9555, PCA9535, PCA9539, PCAL9554, PCA9554 and PCA9538. Using I²C the ESP01 can be expanded with loads of GPIO's. Thus, GPIO expander acts as a reliable component for developers in order to boost functionality of high-speed analog peripherals and digital accelerators. This tiny littl What is a GPIO?¶ A “General Purpose Input/Output” (GPIO) is a flexible software-controlled digital signal. IO P0 P1 P2 P3 P4 are connected to joystick, corresponding to left, down, press, right and up. The board uses the TCA9534U I/O Expander IC from Texas Instruments to add up to 8 digital inputs and outputs controlled via an I 2 C interface. MaxLinear: Interface - I/O Expanders 16 Bit Examples of the former include the Intel 8255, which interfaces 24 GPIOs to a parallel communication bus, and various GPIO expander ICs, which interface GPIOs to serial communication buses such as I²C and SMBus. 2V to 5. 1 “Hardware reset, Power-On Reset (POR) and software reset” 7. Figure 2: Drive higher current ESP32-S2 WROOM Module with PCB Antenna - 4 MB flash and no PSRAM - 4MB Flash (0:12) https://www. Pinout¶ As the name suggests, the PCF8574 I2C LCD Module is based on the PCF8574 GPIO Expander IC. You can manage the I/O Expander GPIO driver support through the following kernel configuration option: Digi IO Expander (CONFIG_MFD_MCA_IOEXP) Platform driver mapping The SX1509 is a 16-channel GPIO expander with an I2C interface -- that means with just two wires, your microcontroller can interface with 16 fully configurable digital input/output pins. Add code to parse the GPIO expander Device Tree node and extract platform data out of it, and populate the struct 'pcf857x_platform_data' maintained by the driver. The IO Pi Plus is powered through the host Raspberry Pi using the GPIO port and extended pins on the GPIO connector allow you to stack the IO Pi Plus along with other expansion boards. The GPIO expander is assigned with a base address of 138. System integration Infotainment is the presentation of information and entertainment that encompasses work and recreation. Microchip series MCP23xxx GPIO expanders are great chips but they can be a nightmare if you want to deal with registers, timings, etc. Although, if you are using some of the pins for input, you will also need another NodeMCU pin to read interrupts from the GPIO expander. Adding a capacitor and Schottky diode to one of the eight outputs (P4) and placing that output in PWM mode (at about 50% duty cycle) generates enough voltage to drive the LED. In fact, the custom In this series I'll be connecting the PCA9555D 32-bit GPIO expander board to an Arduino micro-controller. This allows lots of sensors and devices to be controlled using only a few of the Pi’s GPIO pins. In addition, the GPIOs on the XRA1405 can This Adafruit GPIO Expander Bonnet will give you even more digital deliciousness - 16 more digital input/output pins are yours for any desire you have. Actions. Each GPIO represents a bit connected to a particular pin, or “ball” on Ball Grid Array (BGA) packages. 5V – Operating Temperature -40 to 125 C – Interface I²C – Max. GPIO expanders work like this: you have a board with some number of GPIO but not enough for your project - maybe you need more buttons or LEDs. \$\endgroup\$ – user253751 Nov 19 '18 at 23:49 GPIO Expanders provide easy I/O expansion using standard serial interfaces such as I 2C™ and SPI. Description This is a handy general purpose input/output Qwiic board. Expand your project possibilities, with the Adafruit AW9523 GPIO Expander and LED Driver Breakout – a cute and powerful I2C expander with a lot of tricks up its sleeve. io on Tindie Find many great new & used options and get the best deals for Arduino PCF8574 PCF8574T I2C 8 Bit IO GPIO expander module & Raspberryy3 at the best online prices at eBay! If instead I consider using a GPIO expander to get those big 8bit ports, such as the MCP23x17 chips, I can get one of those and an ATtiny841 for about £1 each, so looking at just over £2 for the pair. Add DT binding info in Documentation. Microchip series MCP23xxx GPIO expanders are great chips but they can be a nightmare if you want to deal with registers, timings, etc. There is a confusing bit of code in the pca953x. The input default values can be programmed independently, allowing customized input detection. 0: 10/12/2012: PDF: 667. The XRA1201, XRA1201P, XRA1203, XRA1207, XRA1403, and XRA1405 are 16-bit GPIO expanders. 5V. > + tristate "PCF857x, PCA857x, and PCA967x I2C GPIO expanders" > + depends on I2C > + help > + Say yes here to provide access to most "quasi-bidirectional" I2C > + GPIO expanders used for additional digital outputs or inputs. CC: Grant Likely <grant. Hi all, I usually write in the italian forum, but now i've a problem that my friends can't solve so I'll try to ask here. These ports are addressed via I2C. The one at the right with only two of the three address pins connected to Ground and one to 3. Thank you very much, very good quality! The i2c GPIO expander SX1503 has 2 x 8 bit IO interfaces. import gpio from semtech. All GPIO pins work great and the kit is of good quality. Use the GPIO pins of a Raspberry Pi Zero while running Debian Stretch on a PC or Mac with our new GPIO expander software! With this tool, you can easily access a Pi Zero’s GPIO pins from your x86 laptop without using SSH, and you can also take advantage of your x86 computer’s processing power in your physical computing projects. This application note discusses the feature set and use of the MCP23X08/17 (8-bit and 16-bit) GPIO Expand-ers. In part two we will connect a 4X4 keypad to an 8-bit port. Salt Lake City, UT The GPIO expander chip has an interrupt signal which I’ve connected to GPIO125. The board consists of two MCP23S17 GPIO expanders, which are split up into four 8-bit ports (2 ports per MCP23S17). 5 out of 5 stars 58 $7. A separate GPIO expander IC is often used in mobile multimedia platforms to resolve the problem of the limited number of GPIOs typically available on digital engines. Generally available breakout boards for the MCP23017 look similar to this: The MCP23008 has 8 IO pins which the MCP230xx driver uses as D0 - D7. The Raspberry Pi is an amazing single board computer - and one of the best parts is that GPIO connector! 40 pins of digital goodness you can twiddle to control LEDs, sensors, buttons, radios, displays - just about any device you can imagine. The board adds an additional eight IO pins which you can read and write just like any other digital pin on your controller. Unfortunately it is limited when it comes to GPIO's. c driver where it sets up interrupts: Device drivers / GPIO support / PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports. Figure 1. are there any expanders I can use? Also, is GPIO just on Raspberry Pi or is it a generic term that is on multiple platforms? I am making an LED cube, (10x10x10) and I need to have 30 pins (10 for each axles). GPIO expanders provide easy I/O expansion using standard serial interfaces. Example: For example, board setup code could create structures identifying the range of GPIOs that chip will expose, and passes them to each GPIO expander chip using platform_data. Three HARDWARE ADDRESS SEL jumpers allow you to configure board address and connect up to eight devices on the bus. * PORT_EXPANDER_IODIR_REGISTER_ADDRESS, PORT_EXPANDER_GPIO_REGISTER_ADDRESS, PORT_EXPANDER_OLAT_REGISTER_ADDRESS are the register addresses in the port expander that correspond to the IODIR register, GPIO register and OLAT register. If the second bit of the GPIO register is ‘0’ then the switch is currently pressed. The I/O expander design example includes four ports (A, B, C, and D) which can be independently programmed as I/O ports. I added the following for the new expander on I2C bus 0: Use our selection tool to compare and select the right TI I2C general-purpose I/O (GPIO) device to expand the number of available I2C I/O pins in your design. The Address range of PCF8574 is from 0x20 to 0x27 (7 bit address mode). 6 KB: SPI Slave Controller - Documentation RD1142: 1. e. When I have, I’ll write part 4. Only two states are possible: high or low. In turn, the GPIO expander will provide you with 8 additional GPIO. 0 GENERAL DESCRIPTION The XRA1405 is an 16-bit GPIO expander with an SPI interface. 99$15. Established in 1900, RAFI is a $440M supplier of Switches and Interface Control Systems. Whenever there is a change in rotating switch position it suposed to generate an interrupt, so that we can read the position. input/output) port expander capable of interfacing a main digital ASIC via the two-line bidirectional bus (I2C). 2V to 5. It provides 8 GPIO each with an LED indicator, and goes to a pin in a dual row 100mil header. Eg. SX1509 GPIO expander can also act as a level shifter to connect a microcontroller running at one voltage level to a component running at a different voltage level, thus eliminating the need for extra level translating circuits. io: QGPIO: Qwiic GPIO expander based on PCF8574. Many Texas Instrument ones note this setup in the datasheet, under using the output as a GPO. In the q2w directory in the wiringPi examples directory, you’ll find a program called blink-io. The PCAL9555, PCAL9554 series is a low-voltage 16-bit/8-bit General Purpose Input/Output (GPIO) expander with interrupt. Here's the device tree section for the existing expander, under I2C bus 2: WayinTop RPi GPIO Breakout Expansion Kit for Raspberry Pi 4B 3B+ 3B 2B B+, T-Type GPIO Expansion Adapter Board + 830 Tie Points Solderless Breadboard + 40pin GPIO Flat Ribbon Cable + 65pcs Jumper Wire 4. , and the voltage is usually 3. And I need to link this cam_mux_sel pin to mux-gpio property in the cam-i2cmux node. 0 line items Total: $0. gpio expander


Gpio expander