def display_frame(self, full_refresh: bool = False) -> None:
"""Display frame stored in sram"""
# TODO check the display frame commands in the new library
LOG.debug('Display frame stored in sram')
self.send_command(VCM_DC_SETTING)
self.send_data(0x28)
self.send_command(VCOM_AND_DATA_INTERVAL_SETTING)
self.send_command(
0x97
) # VBDF 17|D7 VBDW 97 VBDB 57 VBDF F7 VBDW 77 VBDB 37 VBDR B7
if self._frame_counter == config.FULL_REFRESH or full_refresh:
self.set_lut()
self.send_command(DISPLAY_REFRESH)
self.wait_until_idle()
self.set_lut(quick=True)
self._frame_counter = 0
else:
self._frame_counter += 1
self.send_command(DISPLAY_REFRESH)
gpio.delay_ms(200)
self.wait_until_idle()
LOG.debug('frame counter: %s/%s before long screen refresh',
self._frame_counter, config.FULL_REFRESH)
def display_partial_frame(self) -> None:
# self.set_partial_lut()
self.send_command(DISPLAY_REFRESH)
gpio.delay_ms(
200
) # THe current library from waveshere's example code tells this delay is important
self.wait_until_idle()
self.set_lut(quick=True)
def wait_until_idle(self) -> None:
timeout = 0
while gpio.digital_read(self.busy_pin) == 0: # 0: busy, 1: idle
gpio.delay_ms(100)
timeout += 1
if timeout >= 100:
LOG.debug(
"EPAPER: busy signal did not deactivate/epaper not responding in 10 sec"
)
timeout = 0
def set_frame(self, frame_buffer: Tuple[bytes]) -> None:
"""
Send frame to sram on the epaper module
:param frame_buffer: tuple with frame buffer
"""
self.send_command(DATA_START_TRANSMISSION_1)
self.send_data(frame_buffer)
self.send_command(DATA_STOP)
gpio.delay_ms(2)
self.send_command(DATA_START_TRANSMISSION_2)
self.send_data(frame_buffer)
self.send_command(DATA_STOP)
gpio.delay_ms(2)
def reset(self) -> None:
"""Module reset"""
gpio.digital_write(self.reset_pin, 1)
gpio.delay_ms(200)
gpio.digital_write(self.reset_pin, 0)
gpio.delay_ms(10)
gpio.digital_write(self.reset_pin, 1)
gpio.delay_ms(200)