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main.py: new debounce and changed button order #12

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merged 1 commit into from
Oct 10, 2024
Merged

main.py: new debounce and changed button order #12

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30 changes: 20 additions & 10 deletions examples/main.py
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,8 @@
import pngdec
from explorer import display, button_z, button_x, button_y, BLACK, WHITE

last_button_press = time.ticks_ms()


def hsv_to_rgb(h: float, s: float, v: float) -> tuple[float, float, float]:
if s == 0.0:
Expand Down Expand Up @@ -34,6 +36,18 @@ def hsv_to_rgb(h: float, s: float, v: float) -> tuple[float, float, float]:
return v, p, q


def debounce(button, debounce_ms=200):
global last_button_press
try:
value = button.value() == 0
if value and time.ticks_ms() - last_button_press > debounce_ms:
last_button_press = time.ticks_ms()
return True
except NameError:
last_button_press = time.ticks_ms()
return False


def get_applications() -> list[dict[str, str]]:
# fetch a list of the applications that are stored in the filesystem
applications = []
Expand Down Expand Up @@ -84,19 +98,15 @@ def menu() -> str:

while True:

if button_x.value() == 0:
if debounce(button_x):
target_scroll_position -= 1
target_scroll_position = target_scroll_position if target_scroll_position >= 0 else len(applications) - 1
time.sleep(0.08)

if button_y.value() == 0:
if debounce(button_z):
target_scroll_position += 1
target_scroll_position = target_scroll_position if target_scroll_position < len(applications) else 0
time.sleep(0.08)

if button_z.value() == 0:
time.sleep(0.08)

if debounce(button_y):
return applications[selected_item]["file"]

scroll_position += (target_scroll_position - scroll_position) / 5
Expand All @@ -111,9 +121,9 @@ def menu() -> str:

# Draw some markers on screen so you know which buttons to press :)
display.set_pen(WHITE)
display.triangle(300, 42, 290, 55, 310, 55)
display.triangle(300, 130, 290, 117, 310, 117)
display.rectangle(293, 190, 15, 15)
display.triangle(303, 42, 293, 55, 313, 55)
display.rectangle(295, 114, 16, 16)
display.triangle(303, 205, 293, 191, 313, 191)

for list_index, application in enumerate(applications):
distance = list_index - scroll_position
Expand Down