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Fix lilygo_t_display_s3.py

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This commit is contained in:
Thomas Farstrike
2026-02-23 22:11:09 +01:00
parent 70915a78ca
commit 1d99047f3d
1 changed files with 51 additions and 23 deletions
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internal_filesystem/lib/mpos/board/lilygo_t_display_s3.py
+51 -23
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@@ -1,12 +1,10 @@
print("lilygo_t_display_s3.py running again")
print("lilygo_t_display_s3.py running")
import lcd_bus
import lvgl as lv
import machine
import time
import mpos.ui
print("lilygo_t_display_s3.py display bus initialization")
try:
display_bus = lcd_bus.I80Bus(
@@ -21,7 +19,7 @@ try:
data5=46,
data6=47,
data7=48,
reverse_color_bits=False # doesnt seem to do anything?
#reverse_color_bits=False # doesnt seem to do anything?
)
except Exception as e:
print(f"Error initializing display bus: {e}")
@@ -34,40 +32,45 @@ fb1 = display_bus.allocate_framebuffer(_BUFFER_SIZE, lcd_bus.MEMORY_INTERNAL | l
fb2 = display_bus.allocate_framebuffer(_BUFFER_SIZE, lcd_bus.MEMORY_INTERNAL | lcd_bus.MEMORY_DMA)
import drivers.display.st7789 as st7789
import mpos.ui
mpos.ui.main_display = st7789.ST7789(
data_bus=display_bus,
frame_buffer1=fb1,
frame_buffer2=fb2,
display_width=170, # emulator st7789.c has 135
display_height=320, # emulator st7789.c has 240
color_space=lv.COLOR_FORMAT.RGB565,
#color_space=lv.COLOR_FORMAT.RGB888,
#color_space=lv.COLOR_FORMAT.RGB565,
color_space=lv.COLOR_FORMAT.RGB888,
color_byte_order=st7789.BYTE_ORDER_RGB,
# rgb565_byte_swap=False, # always False is data_bus.get_lane_count() == 8
power_pin=15,
power_pin=9, # Must set RD pin to high, otherwise blank screen as soon as LVGL's task_handler starts
reset_pin=5,
backlight_pin=38,
reset_state=st7789.STATE_LOW, # needs low: high will not enable the display
backlight_pin=38, # needed
backlight_on_state=st7789.STATE_PWM,
offset_x=35,
offset_y=0
)
mpos.ui.main_display.set_power(True) # set RD pin to high before the rest, otherwise garbled output
mpos.ui.main_display.init()
mpos.ui.main_display.set_power(True)
mpos.ui.main_display.set_backlight(100)
mpos.ui.main_display.set_backlight(100) # works
lv.init()
#mpos.ui.main_display.set_rotation(lv.DISPLAY_ROTATION._90) # must be done after initializing display and creating the touch drivers, to ensure proper handling
mpos.ui.main_display.set_color_inversion(True) # doesnt seem to do anything?
mpos.ui.main_display.set_color_inversion(True)
# Button handling code:
from machine import Pin
btn_a = Pin(0, Pin.IN, Pin.PULL_UP) # 1
btn_b = Pin(14, Pin.IN, Pin.PULL_UP) # 2
btn_c = Pin(3, Pin.IN, Pin.PULL_UP) # 3
# Key repeat configuration
# This whole debounce logic is only necessary because LVGL 9.2.2 seems to have an issue where
# the lv_keyboard widget doesn't handle PRESSING (long presses) properly, it loses focus.
REPEAT_INITIAL_DELAY_MS = 300 # Delay before first repeat
REPEAT_RATE_MS = 100 # Interval between repeats
REPEAT_PREV_BECOMES_BACK = 700 # Long previous press becomes back button
last_key = None
last_state = lv.INDEV_STATE.RELEASED
key_press_start = 0 # Time when key was first pressed
@@ -86,25 +89,51 @@ def keypad_read_cb(indev, data):
if btn_a.value() == 0:
current_key = lv.KEY.PREV
elif btn_b.value() == 0:
current_key = lv.KEY.ENTER
elif btn_c.value() == 0:
current_key = lv.KEY.NEXT
if (btn_a.value() == 0) and (btn_c.value() == 0):
current_key = lv.KEY.ESC
if (btn_a.value() == 0) and (btn_b.value() == 0):
current_key = lv.KEY.ENTER
if current_key:
if current_key != last_key:
# New key press
if current_key is not None:
if last_key is None or current_key != last_key:
print(f"New key press: {current_key}")
data.key = current_key
data.state = lv.INDEV_STATE.PRESSED
last_key = current_key
last_state = lv.INDEV_STATE.PRESSED
key_press_start = current_time
last_repeat_time = current_time
else:
print(f"key repeat because current_key {current_key} == last_key {last_key}")
elapsed = time.ticks_diff(current_time, key_press_start)
since_last_repeat = time.ticks_diff(current_time, last_repeat_time)
if elapsed >= REPEAT_INITIAL_DELAY_MS and since_last_repeat >= REPEAT_RATE_MS:
if current_key == lv.KEY.PREV:
print("Repeated PREV does not do anything, instead it triggers ESC (back) if long enough")
if since_last_repeat > REPEAT_PREV_BECOMES_BACK:
print("back button trigger!")
data.key = lv.KEY.ESC
data.state = lv.INDEV_STATE.PRESSED if last_state == lv.INDEV_STATE.RELEASED else lv.INDEV_STATE.RELEASED
last_key = current_key
last_state = data.state
last_repeat_time = current_time
else:
print("repeat PREV ignored because not pressed long enough")
else:
print("Send a new PRESSED/RELEASED pair for repeat")
data.key = current_key
data.state = lv.INDEV_STATE.PRESSED if last_state == lv.INDEV_STATE.RELEASED else lv.INDEV_STATE.RELEASED
last_key = current_key
last_state = data.state
last_repeat_time = current_time
else:
pass # not needed as it doesnt help navigating around in the keyboard:
#print("No repeat yet, send RELEASED to avoid PRESSING?")
#data.state = lv.INDEV_STATE.RELEASED
#last_state = lv.INDEV_STATE.RELEASED
else:
# No key pressed
data.key = last_key if last_key else lv.KEY.ENTER
data.key = last_key if last_key else -1
data.state = lv.INDEV_STATE.RELEASED
last_key = None
last_state = lv.INDEV_STATE.RELEASED
@@ -112,9 +141,8 @@ def keypad_read_cb(indev, data):
last_repeat_time = 0
# Handle ESC for back navigation (only on initial PRESSED)
#if last_state == lv.INDEV_STATE.PRESSED:
# if current_key == lv.KEY.ESC:
# mpos.ui.back_screen()
if data.state == lv.INDEV_STATE.PRESSED and data.key == lv.KEY.ESC:
mpos.ui.back_screen()
group = lv.group_create()