sync

scroll_font/README.md

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+# README.md
+
+Source: https://github.com/russhughes/st7789_mpy/blob/master/examples/scroll_font.py

scroll_font/main.py

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+"""
+Smoothly scrolls all font characters up the screen.
+Only works with fonts with heights that are even multiples of the screen height, (i.e. 8 or 16 pixels high)
+
+Non-functionnal: after some chars the screen is broken
+"""
+
+import utime
+import random
+from machine import Pin, SPI
+import st7789
+
+# Choose a font
+#from fonts import vga1_8x8 as font
+#from fonts import vga2_8x8 as font
+#from fonts import vga1_8x16 as font
+from fonts import vga2_8x16 as font
+#from fonts import vga1_16x16 as font
+#from fonts import vga1_bold_16x16 as font
+#from fonts import vga2_16x16 as font
+#from fonts import vga2_bold_16x16 as font
+
+def main():
+    tft = st7789.ST7789(
+        SPI(2, baudrate=30000000, polarity=1, phase=1, sck=Pin(18), mosi=Pin(19)),
+        135,
+        240,
+        reset=Pin(23, Pin.OUT),
+        cs=Pin(5, Pin.OUT),
+        dc=Pin(16, Pin.OUT),
+        backlight=Pin(4, Pin.OUT),
+        rotation=0
+    )
+    tft.init()
+
+    last_line = tft.height() - font.HEIGHT
+    tfa = 40
+    tfb = 40
+    tft.vscrdef(tfa, 240, tfb)
+
+    tft.fill(st7789.BLUE)
+    scroll = 0
+    character = 0
+    while True:
+        tft.fill_rect(0,scroll, tft.width(), 1, st7789.BLUE)
+
+        if scroll % font.HEIGHT == 0:
+            tft.text(
+                font,
+                '\\x{:02x}= {:s} '.format(character, chr(character)),
+                0,
+                (scroll + last_line) % tft.height(),
+                st7789.WHITE,
+                st7789.BLUE)
+
+            character = character +1 if character < 256 else 0
+
+        tft.vscsad(scroll+tfa)
+        scroll +=1
+
+        if scroll == tft.height:
+            scroll = 0
+
+        utime.sleep(0.01)
+
+main()