I think there might be the pins settings that are pointing to somewhere else, or I'm just using the wrong libraries for my board. Make sure GPIO loopback adapter is installed SPI test. Stack the USB Host shield on top of Arduino.
![arduino usb host shield pin usage arduino usb host shield pin usage](https://m.media-amazon.com/images/I/61W8qaxJ-ZL._AC_US800_.jpg)
It will fail the tests above at the SPI stage: GPIO check failed. This library allows both read and write operations on the GPIO pins of the Max 3421 IC. To use the board, the USB Host Shield 2.0 library needs to be installed. Also since the reset pin is connected to the Arduino reset pin on the official shield, you also got another pin there. The USB Host Shield from Sparkfun sku: DEV-09628 has the GPX pin and Reset pins swapped from the original USB Host shield described here. The board is based on the MAX3421 chip and works with the SPI pins on the Arduino. ), but nothing happened.Īlso, I tried using the Greiman's library ( ) with the DriveInfo example ( ) and it only returned: UsbFat version: 20141220 Furthermore the library doesn’t use the GPX pin from the MAX3421E, so you can actually just bend pin 8 on the shield so you can use pin 8 for other purposes. I have tried using Kroll's library ( ) to do some mass storage testing and see what happens (i.e. If you need to use a USB Keyboard on a project running at 5v that uses an Arduino Uno or Mega then this is the exact shield that you need. The main goal is: I want to read a text file from a flash drive plugged into its USB port.įrom the board's documentation, I know that the USB Host module uses the following Arduino pins: 7 - RST It has a built-in MAX3421E USB Host module.
#Arduino usb host shield pin usage how to
USB Host - Flash Drive software Demo Arduino sketch to show how to read number of lines in a file and to individually read each line.
![arduino usb host shield pin usage arduino usb host shield pin usage](https://http2.mlstatic.com/D_NQ_NP_842941-MLB31883362624_082019-O.jpg)
This is useful for reading in data files or config files.
![arduino usb host shield pin usage arduino usb host shield pin usage](https://ae01.alicdn.com/kf/HTB1Fw4_SpXXXXaSXFXXq6xXFXXXi/USB-Host-Shield-Support-Google-For-Arduino-For-Android-ADK-328-MEGA-2560-Duemilanove.jpg)
#Arduino usb host shield pin usage serial
I'm using an Arduino Mega 2560 (Iteaduino ADK v1.0d to be more specific, like the one shown below). It uses software serial to talk to the USB Host board so that the file data can been seen on the Arduino Serial Monitor.