warning about unused images added, examples added to README.

pull/1/head
Jürgen Weigert 6 years ago
parent 6ac073f7b3
commit fc3892d977
  1. 7
      README.md
  2. BIN
      gfx/heart.png
  3. BIN
      gfx/heart_full.png
  4. 13
      led-badge-11x44.py
  5. 0
      photos/green_badge.jpg
  6. BIN
      photos/love_my_fablab.jpg

@ -1,7 +1,7 @@
# Led-Badge-44x11
Upload tool for an led name tag with USB-HID interface
![LED Mini Board](green_badge.jpg)
![LED Mini Board](photos/green_badge.jpg)
## Warning
@ -34,12 +34,15 @@ loads the text 'Hello' as message one and 'World!' as message two. Note the diff
sudo python3 ./led-badge-11x44.py -m 5 gfx/fablabnbg_logo_44x11.png
loads a fullscreen still image.
loads a fullscreen still image. (Or displays the pathname, if the image was not found. That is a hack. Sorry)
sudo python3 ./led-badge-11x44.py -l gfx/heart.png -l gfx/fablab_logo_16x11.png "I^Amy^Bfablab^B"
preloads two images, a heart and a crude fablab logo as images 1 and two. The images can then be embedded in a message by using control characters. To enter the ^A control character on the shell, press CTRL-V followed by CTRL-A.
![LED Mini Board](photos/love_my_fablab.jpg)
<pre>
Usage: led-badge-11x44.py [-h] [-s SPEED] [-m MODE] [-l FILE]
message [message ...]

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@ -15,11 +15,12 @@
# v0.1, 2019-03-05, jw initial draught. HID code is much simpler than expected.
# v0.2, 2019-03-07, jw support for loading bitmaps added.
# v0.3 jw option -l to load graphics for inline use in text.
# v0.4, 2019-03-08, jw Warning about unused images added. Examples added to the README.
import sys, os, re, array, time, argparse
import usb.core
__version = "0.3"
__version = "0.4"
font_11x44 = (
# 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
@ -151,13 +152,17 @@ for i in range(len(charmap)):
char_offset[charmap[i]] = 11 * i
bitmap_loaded = [ ([],0) ]
bitmaps_unused = False
def bitmap_char(ch):
""" Returns a tuple of 11 bytes,
ch = '_' returns (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255)
The bits in each byte are horizontal, highest bit is left.
"""
if ord(ch) < 32: return bitmap_loaded[ord(ch)]
if ord(ch) < 32:
global bitmaps_unused
bitmaps_unused = False
return bitmap_loaded[ord(ch)]
o = char_offset[ch]
return (font_11x44[o:o+11],1)
@ -254,11 +259,15 @@ print("using [%s %s] bus=%d dev=%d" % (dev.manufacturer, dev.product, dev.bus, d
if args.load:
for file in args.load:
bitmap_loaded.append(bitmap_img(file))
bitmaps_unused = True
msgs = []
for arg in args.message:
msgs.append(bitmap(arg))
if bitmaps_unused == True:
print("\nWARNING:\n Your preloaded images are not used.\n Try without '-l' or embed the control character '^A' in your message.\n")
buf = array.array('B')
buf.extend(header(list(map(lambda x: x[1], msgs)), args.speed, args.mode))

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