Choose random image from flash

test.py

@@ -2,8 +2,11 @@ import epaper
 import microbmp
 import time
 import random
+import os
 import gc
 
+gc.enable()
+
 epd_resolution = [600, 448]
 epd_colormap = [
             [0x00, 0x00, 0x00], # black
@@ -15,9 +18,7 @@ epd_colormap = [
             [0xff, 0x77, 0x00], # orange
             ]
 
-images = ["lambo.bmp", "fallout.bmp", "nasa.bmp"]
-
-gc.enable()
+images = list(filter(lambda x : x.endswith(".bmp"), os.listdir()))
 
 def init_display():
     #print("ePaper init ", str(time.localtime()))
@@ -71,12 +72,17 @@ def draw_image(filename):
         #for i in range(len(colors)):
         #    epd.pixel(offset_x + x + i, offset_y + y, color_to_index(colors[i]))
 
-    print(str(time.localtime()), " BMP ", filename, " loading")
+    #print(str(time.localtime()), " BMP ", filename, " loading")
+    time_start = time.ticks_ms()
     epd.fill(epd.White)
     microbmp.MicroBMP(header_callback=header_callback, data_callback=pixel_callback).load(filename)
-    print(str(time.localtime()), " BMP loaded")
+    time_loaded = time.ticks_ms()
+    print(" time to load: ", (time_loaded - time_start) / 1000, " s")
+    #print(str(time.localtime()), " BMP loaded")
     epd.EPD_5IN65F_Display(epd.buffer)
-    print(str(time.localtime()), " ePaper printed")
+    #print(str(time.localtime()), " ePaper printed")
+    time_finished = time.ticks_ms()
+    print(" time to render: ", (time_finished - time_loaded) / 1000, " s")
 
 
 # MAIN
@@ -84,11 +90,11 @@ def draw_image(filename):
 epd = init_display()
         
 while True:    
-    for filename in images:
     epd.EPD_5IN65F_Init()
+    filename = random.choice(images)
     print("TV loading image ", filename)
     draw_image(filename)
-        epd.Sleep()
     print("TV showing ", filename)
+    epd.Sleep()
     gc.collect()
     epd.delay_ms(10000)