
This SDK has been patched by Embedded Artists for the iMXRT1064 Developer's Kit.
The SDK was released on 2022-03-15 and is based on NXP's 2.11.0 SDK (SDK_2_11_0_MIMXRT1064xxxxA.zip).

This is what has been patched:
* Set CPU speed according to Commercial/Industrial CPU
* Correction of the VDD_SOC_IN voltage.
* LWIP projects - added reading of the MAC address from the onboard I2C EEPROM
* Added an I2C driver for the gpio expander (PCA6416) and code to use it
* Added an I2C driver for the PWM gpio expander (PCA9530) and code to use it
* SEMC projects - changed algorithm for memory test and now test entire 32MB instead of only 4KB
* Examples using a display have been updated to use PCA6416/PCA9530 for
  RST/PWR/BL signals
* BOARD_USER_BUTTON has been redirected to SW5/WAKEUP button on the uCOM Carrier Board
* USER_LED has been changed to the blue RGB LED using PCA6416
* Adjusted the USB interface number (it is different for host and device examples)
* Changed the Wi-Fi examples to use the Embedded Artists 1XK M.2 Module (EAR00385) as default
* Added support for Embedded Artists 1ZM M.2 Module (EAR00364) in the NXP Wi-Fi examples
* Many of the projects have been updated to use a more complete pin_mux.c file where all
  necessary pins have been initialized. The SDK examples used to only configure the pins
  that they use (and often not every pin) and most of the time the configuration was only
  for MUX:ing and not the PAD settings (pull up/down/none, drive strength and slew).
* Changed reset pin for SD card examples

This has been added:
* LWIP projects - option to use 100/10Mbps Ethernet-PHY Adapter
* AWS projects - option to use 100/10Mbps Ethernet-PHY Adapter
* AzureRTOS projects - option to use 100/10Mbps Ethernet-PHY Adapter
* I2C probe example
* Wi-Fi (serial) examples for the CMWC1ZZABR-107-EVB (a.k.a ABR Module)

This has been removed:
* All projects for the expansion board AGM01

Important things to note:
* Read section "8 - Known Issues" in docs/MCUXpresso SDK Release Notes for EVK-MIMXRT1064.pdf
  to see known issues with the current version of the SDK.
* For Iperf examples, set compiler optimization to -O3 or similar to improve performance.
* If the hardware seems unresponsive and the debugger cannot connect/flash/erase the current program
  then the most likely cause is the running program preventing the access. To stop the currently
  running program and regain control:
  1) Press and hold down the ISP_ENABLE button (SW1)
  2) Press and hold down the RESET button (SW3)
  3) Let go of the RESET button
  4) Wait an extra second or two
  5) Release the ISP_ENABLE button
  6) The hardware is now in a mode where programming/erasing it should work


Connectors:
* J29 (micro USB) is the default UART and unless specified otherwise it is setup for 115200 8/N/1


Everything below this line is the original content of the readme file.
=======================================================================



Overview
========
The littlefs_shell demonstrates the capabilities of LittleFS FLASH filesystem:

After the example is loaded into the target and launched the shell prompt is printed to the console.
Type "help" to obtain list of available commands. The FLASH storage has to be formatted upon first use.
After mounting the filesystem it is possible to create/delete/list directories and read/write files using appropriate commands.
There is no concept of current directory in LittleFS, hence it is always necessary to specify full directory path.

List of supported commands:
  format       Formats the filesystem
  mount        Mounts the filesystem
  unmount      Unmounts the filesystem
  ls           Lists directory content
  rm           Removes file or directory
  mkdir        Creates a new directory
  write        Writes/appends text to a file
  cat          Prints file content

Example workflow:
To perform initial format of the storage, issue 'format yes' command.
Mount the storage by issuing 'mount' command.
Create new directory by 'mkdir mynewdir'.
Create new file in the 'mynewdir' directory by writing line of text to it using 'write mynewdir/foo.txt firstline'
Append another line to the same file using 'write mynewdir/foo.txt secondline'
Print the content of the file using 'cat mynewdir/foo.txt'. The expected output is:
  firstline
  secondline

Toolchain supported
===================
- IAR embedded Workbench  9.10.2
- MCUXpresso  11.5.0
- Keil MDK  5.34
- GCC ARM Embedded  10.2.1

Hardware requirements
=====================
- Mini/micro USB cable
- EVK-MIMXRT1064 board
- Personal Computer

Board settings
==============

Prepare the Demo
================
1.  Connect a USB cable between the host PC and the OpenSDA USB port on the target board. 
2.  Open a serial terminal with the following settings:
    - 115200 baud rate
    - 8 data bits
    - No parity
    - One stop bit
    - No flow control
3.  Download the program to the target board.
4.  Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.

Running the demo
================
When the example runs successfully, you can see the similar information from the terminal as below.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~
SHELL (build: Feb 28 2018)
 * Copyright 2018 NXP
LFS>>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
