
This SDK has been patched by Embedded Artists for the iMXRT1062 Developer's Kit.
The SDK was released on 2022-11-18 and is based on NXP's 2.12.1 SDK (SDK_2_12_1_MIMXRT1062xxxxA.zip).

This is what has been patched:
* Set CPU speed according to Commercial/Industrial CPU
* Correction of the VDD_SOC_IN voltage.
* Flash settings (speed, algorithm, size, driver) to work with the 4MB OctalSPI ATXP032
* 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
* Modified pin muxing
* SEMC projects - changed algorithm for memory test and now test entire 32MB instead of only 4KB
* Adjusted the USB interface number for USB Host examples (it is different for host and device examples)
* Added a software_reset() function in board.c/.h to issue a JEDEC reset before NVIC_SystemReset()
* Changed the Wi-Fi examples to use the Embedded Artists 1XK M.2 Module (EAR00385) as default
* 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).
* Embedded Wizard project 'ew_gui_smart_thermostat' was incorrectly setup for EVKB
* Changed the default display to RK043FN02H as it is the one mounted on the Developer's Kits

This has been added:
* New WDOG examples that work
* I2C probe example
* Example to show the use of software_reset()

This has been removed:
* All projects for the EVK - only keeping EVKB which is then patched
* The original WDOG and RTWDOG examples as those were not working

Important things to note:
* Read section "8 - Known Issues" in docs/MCUXpresso SDK Release Notes for EVK-MIMXRT1060.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:
* J22 (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 maestro_demo application demonstrates audio processing on the ARM cortex core
utilizing the Maestro Audio Solutions library.

The application is controlled by commands from a shell interface using serial console.

Type "help" to see the command list.

After running the "usb_mic" command, the USB device will be enumerated on your host.
User will see the volume levels obtained from the USB host as in the example below.
This is just an example application. To leverage the values, the demo has to be modified.


Toolchain supported
===================
- IAR embedded Workbench  9.30.1
- GCC ARM Embedded  10.3.1
- MCUXpresso  11.6.0

Hardware requirements
=====================
- 2x Micro USB cable
- JTAG/SWD debugger
- EVKB-IMXRT1060 board
- Personal Computer

Board settings
==============
1. Set the hardware jumpers (Tower system/base module) to default settings.

Prepare the Demo
================
1. Connect the first micro USB cable between the PC host and the debug USB port on the 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. Connect the second micro USB cable between the PC host and the USB port on the board.
5. Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.

Note
1. When connected to MacBook, change the PCM format from (0x02,0x00,) to (0x01,0x00, ) in
   g_config_descriptor[CONFIG_DESC_SIZE] in the usb_descriptor.c. Otherwise, it can't be enumerated and
   noise is present when recording with the QuickTime player because the sampling frequency and bit resolution
   do not match.
2. When device functionality is changed, please uninstall the previous PC driver to make sure the device with changed functionality can run normally.
3. If you're having audio problems on Windows 10 for recorder, please disable signal enhancement as the following if it is enabled and have a try again.
Running the demo
================
When the example runs successfully, you should see similar output on the serial terminal as below:

*************************************************
Maestro audio USB microphone solutions demo start
*************************************************

[APP_SDCARD_Task] start
[APP_Shell_Task] start

SHELL build: Nov  5 2020
Copyright  2020  NXP

>>
>> usb_mic -1

Starting maestro usb microphone application
The application will run until the board restarts
[STREAMER] Message Task started
Starting recording
[STREAMER] start usb microphone
Set Cur Volume : 8001
Set Cur Volume : 22f8
Set Cur Volume : 265a
Set Cur Volume : 2ab6
Set Cur Volume : 30d9
Set Cur Volume : 3b4c
Set Cur Volume : 7fff
Set Cur Volume : 3b4c
