Move SD card initializations into the if statement

As requested by review. Unable to test the "bitmapsaver_simpletest" bitmap palette example on my featherwing since SCK is in use by other things.

Author: DJDevon3

examples/bitmapsaver_screenshot_simpletest.py

@@ -1,7 +1,6 @@
 # SPDX-FileCopyrightText: 2019 Dave Astels for Adafruit Industries
 # SPDX-License-Identifier: MIT
 
-
 """Example of taking a screenshot."""
 
 # pylint:disable=invalid-name
@@ -14,13 +13,14 @@
 
 TAKE_SCREENSHOT = False  # Set to True to take a screenshot
 
-spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
-cs = digitalio.DigitalInOut(board.SD_CS)
-sdcard = adafruit_sdcard.SDCard(spi, cs)
-vfs = storage.VfsFat(sdcard)
-storage.mount(vfs, "/sd")
-
 if TAKE_SCREENSHOT:
+    # Initialize SD Card & Mount Virtual File System
+    spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
+    cs = digitalio.DigitalInOut(board.SD_CS)
+    sdcard = adafruit_sdcard.SDCard(spi, cs)
+    vfs = storage.VfsFat(sdcard)
+    storage.mount(vfs, "/sd")  # /sd is root dir of SD Card
+
     print("Taking Screenshot... ")
     save_pixels("/sd/screenshot.bmp")
     print("Screenshot Saved")

examples/bitmapsaver_screenshot_tft_featherwing.py

@@ -1,7 +1,8 @@
-# SPDX-FileCopyrightText: 2022 DJDevon3 for Adafruit Industries
+# SPDX-FileCopyrightText: 2023 DJDevon3
 # SPDX-License-Identifier: MIT
-"""Screenshot on a 3.5" TFT Featherwing (integrated SD Card)"""
+""" Screenshot on a 3.5" TFT Featherwing (integrated SD Card) """
 # pylint:disable=invalid-name
+
 import board
 import digitalio
 import displayio
@@ -18,24 +19,23 @@
 
 TAKE_SCREENSHOT = False  # Set to True to take a screenshot
 
-# Initialize Protocol Busses and SD Card
+# Initialize SPI Bus
 spi = board.SPI()
-cs = digitalio.DigitalInOut(board.D5)
-sdcard = adafruit_sdcard.SDCard(spi, cs)
-vfs = storage.VfsFat(sdcard)
-displayio.release_displays()
 
-# Setup Pinouts according to your feather board
+# Initialize TFT Featherwing Display
 tft_cs = board.D9
 tft_dc = board.D10
 display_bus = displayio.FourWire(spi, command=tft_dc, chip_select=tft_cs)
 display = HX8357(display_bus, width=DISPLAY_WIDTH, height=DISPLAY_HEIGHT)
 
-# Mount Virtual File System
-virtual_root = "/sd"
-storage.mount(vfs, virtual_root)
-
 if TAKE_SCREENSHOT:
+    # Initialize SD Card & Mount Virtual File System
+    cs = digitalio.DigitalInOut(board.D5)
+    sdcard = adafruit_sdcard.SDCard(spi, cs)
+    vfs = storage.VfsFat(sdcard)
+    virtual_root = "/sd"  # /sd is root dir of SD Card
+    storage.mount(vfs, virtual_root)
+    
     print("Taking Screenshot... ")
     save_pixels("/sd/screenshot.bmp", display)
     print("Screenshot Saved")

examples/bitmapsaver_simpletest.py

@@ -1,8 +1,7 @@
 # SPDX-FileCopyrightText: 2019 Dave Astels for Adafruit Industries
 # SPDX-License-Identifier: MIT
-
-
 """Example of using save_bitmap"""
+# pylint:disable=invalid-name
 
 import board
 import busio
@@ -12,16 +11,7 @@
 import storage
 from adafruit_bitmapsaver import save_pixels
 
-# pylint:disable=invalid-name
-
-TAKE_SCREENSHOT = False  # Set to True to take a screenshot
-
-print("Setting up SD card")
-spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
-cs = digitalio.DigitalInOut(board.SD_CS)
-sdcard = adafruit_sdcard.SDCard(spi, cs)
-vfs = storage.VfsFat(sdcard)
-storage.mount(vfs, "/sd")
+TAKE_SCREENSHOT = False  # Set True to take a screenshot
 
 WHITE = 0xFFFFFF
 BLACK = 0x000000
@@ -53,6 +43,14 @@
             bitmap[x, y] = 0
 
 if TAKE_SCREENSHOT:
+    # Initialize SD Card & Mount Virtual File System
+    print("Setting up SD card")
+    spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
+    cs = digitalio.DigitalInOut(board.SD_CS)
+    sdcard = adafruit_sdcard.SDCard(spi, cs)
+    vfs = storage.VfsFat(sdcard)
+    storage.mount(vfs, "/sd")  # /sd is root dir of SD Card
+    
     print("Taking Screenshot... ")
     save_pixels("/sd/screenshot.bmp", bitmap, palette)
     print("Screenshot Saved")