adding simpletest for esp32s2 tft

ports/espressif/boards/adafruit_feather_esp32s2_tft/simpletest.py

@@ -0,0 +1,118 @@
+# SPDX-FileCopyrightText: 2023 Tim C
+#
+# SPDX-License-Identifier: MIT
+"""
+Simpletest for the Feather ESP32-S2 TFT.
+
+Send an HTTP GET request to Adafruit WIFI test file and show
+the response (or an error) on the display. Blink the on-board
+standard LED while the on-board button is not pressed, turn on
+the LED while the on-board button is pressed. Cycle the on-board
+neopixel through a rainbow of colors.
+
+You must set CIRCUITPY_WIFI_SSID and CIRCUITPY_WIFI_PASSWORD
+inside your settings.toml file for the request to be able to
+be successful, but the error message will display even if
+you have not.
+"""
+import ssl
+import time
+import board
+import terminalio
+import wifi
+import socketpool
+from digitalio import DigitalInOut, Direction, Pull
+import neopixel
+import rainbowio
+import adafruit_requests as requests
+from displayio import Group
+from adafruit_display_text.bitmap_label import Label
+from adafruit_display_text import wrap_text_to_pixels
+
+# Variables
+TEXT_URL = "http://wifitest.adafruit.com/testwifi/index.html"
+
+PLAIN_LED_BLINK_DELAY = 0.3
+NEOPIXEL_CHANGE_DELAY = 0.05
+
+last_led_blink_time = 0
+last_neopixel_change_time = 0
+cur_color_number = 0
+
+# requests setup
+socket = socketpool.SocketPool(wifi.radio)
+https = requests.Session(socket, ssl.create_default_context())
+
+# Plain LED setup
+led = DigitalInOut(board.LED)
+led.direction = Direction.OUTPUT
+
+# Button setup
+button = DigitalInOut(board.BUTTON)
+button.direction = Direction.INPUT
+button.pull = Pull.UP
+
+# Neopixel setup
+rgb_pixel = neopixel.NeoPixel(board.NEOPIXEL, 1, brightness=0.05)
+
+# Displayio objects setup
+main_group = Group()
+output_label = Label(terminalio.FONT, text="", color=0xFFFFFF)
+output_label.anchor_point = (0.5, 0.0)
+output_label.anchored_position = (board.DISPLAY.width // 2, 6)
+main_group.append(output_label)
+
+# set the root_group to show our objects on the display
+board.DISPLAY.root_group = main_group
+
+try:
+    print(f"Fetching text from {TEXT_URL}")
+    response = https.get(TEXT_URL)
+    print("Text Response: ", response.text)
+    output_label.text = "\n".join(
+        wrap_text_to_pixels(response.text, board.DISPLAY.width - 10, terminalio.FONT)
+    )
+except OSError as e:
+    ERROR_MSG = (
+        "No WIFI connection. Please add "
+        "CIRCUITPY_WIFI_SSID and CIRCUITPY_WIFI_PASSWORD "
+        f"for a valid network into settings.toml\n\nError: {e.args}"
+    )
+    output_label.text = "\n".join(
+        wrap_text_to_pixels(ERROR_MSG, board.DISPLAY.width - 10, terminalio.FONT)
+    )
+
+# Loop forever
+while True:
+    # store the current time
+    now = time.monotonic()
+
+    # check if the button is not pressed.
+    if button.value:
+        # check if it's been long enough since the last LED blink
+        if last_led_blink_time + PLAIN_LED_BLINK_DELAY <= now:
+            # flop the LED state
+            led.value = not led.value
+            # record the time to compare in future iterations
+            last_led_blink_time = now
+
+    else:  # button is pressed
+        # turn on the LED
+        led.value = True
+        # record the time, so we can transition back to blinking smoothly
+        last_led_blink_time = now
+
+    # check if it's been long enough since the last Neopixel color change
+    if last_neopixel_change_time + NEOPIXEL_CHANGE_DELAY <= now:
+        # set the neopixel to the next color of the rainbow
+        rgb_pixel.fill(rainbowio.colorwheel(cur_color_number))
+
+        # increment the color number
+        cur_color_number += 1
+
+        # wrap color number back to 0 at the end of the cycle
+        if cur_color_number > 255:
+            cur_color_number = 0
+
+        # record the time to compare in future iterations
+        last_neopixel_change_time = now