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Update epd2in13_V3.py

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New flag & if condition to track if the display has been initialized &
avoid repeated initialization and accumulation of File descriptors  & system crash.
This commit is contained in:
infinition
2024-11-19 23:43:14 +01:00
committed by GitHub
parent 258e212e07
commit 7daf7e8632
1 changed files with 28 additions and 15 deletions
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25
resources/waveshare_epd/epd2in13_V3.py
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@@ -9,6 +9,7 @@ logger = logging.getLogger(__name__)
class EPD: class EPD:
def __init__(self): def __init__(self):
self.is_initialized = False # New flag to track if the display has been initialized #INFINITION
self.reset_pin = epdconfig.RST_PIN self.reset_pin = epdconfig.RST_PIN
self.dc_pin = epdconfig.DC_PIN self.dc_pin = epdconfig.DC_PIN
self.busy_pin = epdconfig.BUSY_PIN self.busy_pin = epdconfig.BUSY_PIN
@@ -200,33 +201,41 @@ class EPD:
parameter: parameter:
''' '''
def init(self, update=None): def init(self, update=None):
# Prevent reinitialization if already initialized #INFINITION
if self.is_initialized:
logger.debug("EPD is already initialized. Skipping redundant init.")
return 0
if update is None: if update is None:
update = self.FULL_UPDATE update = self.FULL_UPDATE
# Initialize the module
if epdconfig.module_init() != 0: if epdconfig.module_init() != 0:
logger.error("Failed to initialize module")
return -1 return -1
# EPD hardware init start
# EPD hardware initialization start
self.reset() self.reset()
self.ReadBusy() self.ReadBusy()
self.send_command(0x12) #SWRESET self.send_command(0x12) # SWRESET
self.ReadBusy() self.ReadBusy()
self.send_command(0x01) #Driver output control self.send_command(0x01) # Driver output control
self.send_data(0xf9) self.send_data(0xf9)
self.send_data(0x00) self.send_data(0x00)
self.send_data(0x00) self.send_data(0x00)
self.send_command(0x11) #data entry mode self.send_command(0x11) # Data entry mode
self.send_data(0x03) self.send_data(0x03)
self.SetWindow(0, 0, self.width-1, self.height-1) self.SetWindow(0, 0, self.width - 1, self.height - 1)
self.SetCursor(0, 0) self.SetCursor(0, 0)
self.send_command(0x3c) self.send_command(0x3c)
self.send_data(0x05) self.send_data(0x05)
self.send_command(0x21) # Display update control self.send_command(0x21) # Display update control
self.send_data(0x00) self.send_data(0x00)
self.send_data(0x80) self.send_data(0x80)
@@ -236,6 +245,10 @@ class EPD:
self.ReadBusy() self.ReadBusy()
self.SetLut(self.lut_full_update) self.SetLut(self.lut_full_update)
# Mark the EPD as initialized #INFINITION
self.is_initialized = True
logger.info("EPD initialized successfully")
return 0 return 0
''' '''