Skip to content

Update mlx90640_pygamer.py #7

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Jan 14, 2020
Merged

Update mlx90640_pygamer.py #7

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
0bf23ba
Update mlx90640_pygamer.py
dglaude Jan 8, 2020
fb926e8
Update mlx90640_pygamer.py
dglaude Jan 8, 2020
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
47 changes: 18 additions & 29 deletions examples/mlx90640_pygamer.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -5,8 +5,10 @@
import displayio
import terminalio
from adafruit_display_text.label import Label
from simpleio import map_range

number_of_colors = 64
number_of_colors = 64 # Number of color in the gradian
last_color = number_of_colors-1 # Last color in palette
palette = displayio.Palette(number_of_colors) # Palette with all our colors

## Heatmap code inspired from: http://www.andrewnoske.com/wiki/Code_-_heatmaps_and_color_gradients
Expand All @@ -21,7 +23,7 @@

def MakeHeatMapColor():
for c in range(number_of_colors):
value = c * (NUM_COLORS-1) / (number_of_colors - 1)
value = c * (NUM_COLORS-1) / last_color
idx1 = int(value) # Our desired color will be after this index.
if idx1 == value : # This is the corner case
red = color[idx1][0]
Expand Down Expand Up @@ -58,8 +60,7 @@ def MakeHeatMapColor():
group = displayio.Group()

min_label = Label(terminalio.FONT, max_glyphs=10, color=palette[0], x = 0, y = 110)
max_label = Label(terminalio.FONT, max_glyphs=10, color=palette[number_of_colors-1], \
x = 80, y = 110)
max_label = Label(terminalio.FONT, max_glyphs=10, color=palette[last_color], x = 80, y = 110)

# Add all the sub-group to the SuperGroup
group.append(image_group)
Expand All @@ -70,23 +71,8 @@ def MakeHeatMapColor():
# Add the SuperGroup to the Display
board.DISPLAY.show(group)

mini = 0
maxi = 0

my_a1 = 20
my_a2 = 37

def temp2index(s, a1, a2):
b1 = 0
b2 = number_of_colors - 1

if s < a1:
r = b1
elif s > a2:
r = b2
else:
r = int( round( b1 + ( (s - a1) * (b2 - b1) / (a2 - a1) ) ) )
return r
min_t = 20 # Initial minimum temperature range, before auto scale
max_t = 37 # Initial maximum temperature range, before auto scale

i2c = busio.I2C(board.SCL, board.SDA, frequency=800000)

Expand All @@ -106,10 +92,11 @@ def temp2index(s, a1, a2):
except ValueError:
# these happen, no biggie - retry
continue
print("Read 2 frames in %0.2f s" % (time.monotonic()-stamp))

mini = frame[0] # Define a default min and max value
maxi = frame[0] # Will be updated by temp2index function
# print("Time for data aquisition: %0.2f s" % (time.monotonic()-stamp))

mini = frame[0] # Define a min temperature of current image
maxi = frame[0] # Define a max temperature of current image

for h in range(24):
for w in range(32):
Expand All @@ -118,13 +105,15 @@ def temp2index(s, a1, a2):
maxi = t
if t < mini:
mini = t
image_bitmap[w, (23-h)] = temp2index(t, my_a1, my_a2)
image_bitmap[w, (23-h)] = int(map_range(t, min_t, max_t, 0, last_color ))

min_label.text="%0.2f" % (my_a1)
min_label.text="%0.2f" % (min_t)

max_string="%0.2f" % (my_a2)
max_string="%0.2f" % (max_t)
max_label.x=120-(5*len(max_string)) # Tricky calculation to left align
max_label.text=max_string

my_a1 = mini # Automatically change the color scale
my_a2 = maxi
min_t = mini # Automatically change the color scale
max_t = maxi
# print((mini, maxi)) # Use this line to display min and max graph in Mu
# print("Total time for aquisition and display %0.2f s" % (time.monotonic()-stamp))