boards/esp32-wrover-kit: Remove deprecated README documentation

2021-04-13 14:58:26 -03:00 · 2021-04-13 14:58:26 -03:00 · 0030c2020f
commit 0030c2020f
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--- a/boards/xtensa/esp32/esp32-wrover-kit/README.txt
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-README for the Espressif ESP Wrover Kit
-==============================================
-
-  The ESP32 is a dual-core system from Espressif with two Harvard
-  architecture Xtensa LX6 CPUs. All embedded memory, external memory and
-  peripherals are located on the data bus and/or the instruction bus of
-  these CPUs. With some minor exceptions, the address mapping of two CPUs
-  is symmetric, meaning they use the same addresses to access the same
-  memory. Multiple peripherals in the system can access embedded memory via
-  DMA.
-
-ESP-WROVER-KIT is an ESP32-based development board produced by Espressif.
-
-ESP-WROVER-KIT features the following integrated components:
-  ESP32-WROVER-B module
-  LCD screen
-  MicroSD card slot
-
-Its another distinguishing feature is the embedded FTDI FT2232HL chip,
-an advanced multi-interface USB bridge. This chip enables to use JTAG
-for direct debugging of ESP32 through the USB interface without a separate
-JTAG debugger. ESP-WROVER-KIT makes development convenient, easy, and
-cost-effective.
-
-Most of the ESP32 I/O pins are broken out to the board’s pin headers for easy access.
-
-Buttons and LEDs
-================
-
-  Buttons
-  -------
-  There are two buttons labeled Boot and EN.  The EN button is not available
-  to software.  It pulls the chip enable line that doubles as a reset line.
-
-  The BOOT button is connected to IO0.  On reset it is used as a strapping
-  pin to determine whether the chip boots normally or into the serial
-  bootloader.  After reset, however, the BOOT button can be used for software
-  input.
-
-  LEDs
-  ----
-  There are several on-board LEDs for that indicate the presence of power
-  and USB activity.
-  There is an RGB LED available for software.
-
-Configurations
-==============
-
-  nsh
-  ---
-
-  Basic configuration to run the NuttShell (nsh).
-
-  wapi
-  ___
-
-  This is a congiuration to test the Wifi driver using WAPI.
-  The Wifi passphrase and SSID can be configured from menuconfig, then once
-  booted you can check if an IP address was assigned:
-    nsh>  ifconfig
-
-  If not configured at startup, you can connect to a network with the following:
-
-    wapi psk wlan0 mypassword 1
-    wapi essid wlan0 myssid 1
-
-  gpio
-  ---
-  
-  This is a test for the GPIO driver.  It includes the 3 LEDs and one,
-  arbitrary, GPIO.  For this example, GPIO22 was used.
-  At the nsh, we can turn LEDs on and off with the following.
-    nsh> gpio -o 1 /dev/gpout0
-    nsh> gpio -o 0 /dev/gpout1
-
-  We can use the interrupt pin to send a signal when the interrupt fires:
-    nsh> gpio -w 14 /dev/gpint3
-  The pin is configured to as a rising edge interrupt, so after issuing the
-  above command, connect it to 3.3V.
-
-Using QEMU:
-==========
-
-First follow the instructions at https://github.com/espressif/qemu/wiki to build QEMU.
-Enable the ESP32_QEMU_IMAGE config found in "Board Selection -> ESP32 binary image for QEMU".
-Download the bootloader and the partition table from https://github.com/espressif/esp-nuttx-bootloader/releases
-and place them in a directory, say ../esp-bins.
-Build and generate the QEMU image: `make ESPTOOL_BINDIR=../esp-bins`
-A new image "esp32_qemu_image.bin" will be created.  It can be run as:
-
- ~/PATH_TO_QEMU/qemu/build/xtensa-softmmu/qemu-system-xtensa -nographic \
-    -machine esp32 \
-    -drive file=esp32_qemu_image.bin,if=mtd,format=raw
- 
-External devices:
-=================
-
-  BMP180
-  ------
-
-  When using BMP180 (enabling CONFIG_SENSORS_BMP180), it's expected this device is wired to I2C0 bus.