improve demo some more

Author: jepler

examples/ov5640_jpeg_kaluga1_3.py

@@ -19,9 +19,24 @@
 
 import board
 import busio
-import adafruit_ov5640
+import displayio
 import microcontroller
 
+import adafruit_ili9341
+import adafruit_ov5640
+
+# Release any resources currently in use for the displays
+displayio.release_displays()
+spi = busio.SPI(MOSI=board.LCD_MOSI, clock=board.LCD_CLK)
+display_bus = displayio.FourWire(
+    spi,
+    command=board.LCD_D_C,
+    chip_select=board.LCD_CS,
+    reset=board.LCD_RST,
+    baudrate=80_000_000,
+)
+display = adafruit_ili9341.ILI9341(display_bus, width=320, height=240, rotation=90)
+
 try:
     with open("/boot_out.txt", "a") as f:
         pass
@@ -31,6 +46,8 @@
         "A 'read-only filesystem' error occurs if you did not correctly install"
         "\nov5640_jpeg_kaluga1_3_boot.py as CIRCUITPY/boot.py and reset the"
         '\nboard while holding the "mode" button'
+        ""
+        "This message is also shown after the board takes a picture and auto-restarts"
     )
     raise SystemExit
 
@@ -42,7 +59,7 @@
     vsync=board.CAMERA_VSYNC,
     href=board.CAMERA_HREF,
     mclk=board.CAMERA_XCLK,
-    size=adafruit_ov5640.OV5640_SIZE_SXGA,
+    size=adafruit_ov5640.OV5640_SIZE_QSXGA,
 )
 
 cam.colorspace = adafruit_ov5640.OV5640_COLOR_JPEG
@@ -53,9 +70,12 @@
 
 print(f"Captured {len(jpeg)} bytes of jpeg data")
 try:
-    print("Writing to internal storage (this is SLOW)")
+    print(end="Writing to internal storage (this is SLOW)")
     with open("/cam.jpg", "wb") as f:
-        f.write(jpeg)
+        for i in range(0, len(jpeg), 4096):
+            print(end=".")
+            f.write(jpeg[i : i + 4096])
+    print()
     print("Wrote to CIRCUITPY/cam.jpg")
     print("Resetting so computer sees new content of CIRCUITPY")
     time.sleep(0.5)

examples/ov5640_jpeg_kaluga1_3_boot.py

@@ -18,6 +18,7 @@
 
 a = analogio.AnalogIn(board.IO6)
 a_voltage = a.value * a.reference_voltage / 65535  # pylint: disable=no-member
+print("measured voltage", a_voltage)
 if abs(a_voltage - V_MODE) < 0.05:  # If mode IS pressed...
     print("storage writable by CircuitPython")
     storage.remount("/", readonly=False)