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mqtt monochrome blit to oled #41

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mqtt monochrome blit to oled #41

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18 changes: 18 additions & 0 deletions lib/aiko/oled.py
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@
# (oled:log This is a test !)
# (oled:pixel x y)
# (oled:pixels x y x y ...)
# (oled:blitm x y width height base64_data)
# (oled:text x y This is a test !)
# oled.bg=1; oled.fg=0
#
Expand Down Expand Up @@ -68,6 +69,7 @@
import aiko.common as common

import configuration.oled
import binascii

oleds = []
width = None
Expand Down Expand Up @@ -244,6 +246,22 @@ def on_oled_message(topic, payload_in):
oleds_show()
return True

if payload_in.startswith("(oled:blitm "):
param = payload_in[12:-1].split()
try:
x = int(param[0])
y = int(param[1])
w = int(param[2])
h = int(param[3])
image = bytearray(binascii.a2b_base64(param[4]))
fbuf = framebuf.FrameBuffer(image, w, h, framebuf.MONO_HLSB)
out = x//width
oleds[out].blit(fbuf, x%width, y)
oleds_show()
except Exception:
print("Error: Expected (oled:blitm x y w h data) where data is a padded base64 mono image")
return True

# (oled:text x y message)
if payload_in.startswith("(oled:text "):
tokens = payload_in[11:-1].split()
Expand Down