diff --git a/adafruit_epd/ssd1680.py b/adafruit_epd/ssd1680.py
index ebcf68c..bd994b8 100644
--- a/adafruit_epd/ssd1680.py
+++ b/adafruit_epd/ssd1680.py
@@ -244,15 +244,30 @@ def power_up(self):
self.command(
_SSD1680_DRIVER_CONTROL,
- bytearray([self._height - 1, (self._height - 1) >> 8, 0x00]),
+ bytearray([self._height, (self._height) >> 8, 0x00]),
)
self.command(_SSD1680_DATA_MODE, bytearray([0x03]))
- self.command(_SSD1680_SET_RAMXPOS, bytearray([0x00, (self._width // 8) - 1]))
+
+ # Set voltages
+ self.command(_SSD1680_WRITE_VCOM_REG, bytearray([0x36]))
+ self.command(_SSD1680_GATE_VOLTAGE, bytearray([0x17]))
+ self.command(_SSD1680_SOURCE_VOLTAGE, bytearray([0x41, 0x00, 0x32]))
+
+ self.command(_SSD1680_SET_RAMXPOS, bytearray([0x00, (self._width // 8)]))
self.command(
_SSD1680_SET_RAMYPOS,
- bytearray([0x00, 0x00, self._height - 1, (self._height - 1) >> 8]),
+ bytearray([0x00, 0x00, self._height, (self._height) >> 8]),
)
+ # Set border waveform
+ self.command(_SSD1680_WRITE_BORDER, bytearray([0x05]))
+
+ # Set ram X count
+ self.command(_SSD1680_SET_RAMXCOUNT, bytearray([0x01]))
+ # Set ram Y count
+ self.command(_SSD1680_SET_RAMYCOUNT, bytearray([self._height, 0]))
+ self.busy_wait()
+
def update(self):
"""Update the display specifically for SSD1680Z."""
self.command(_SSD1680_DISP_CTRL2, bytearray([0xF7])) # Full update for SSD1680Z
@@ -260,3 +275,13 @@ def update(self):
self.busy_wait()
if not self.busy_pin:
time.sleep(3) # Wait for update to complete
+
+ def set_ram_address(
+ self, x: int, y: int
+ ) -> None: # pylint: disable=unused-argument, no-self-use
+ """Set the RAM address location, not used on this chipset but required by
+ the superclass"""
+ # Set RAM X address counter
+ self.command(_SSD1680_SET_RAMXCOUNT, bytearray([x]))
+ # Set RAM Y address counter
+ self.command(_SSD1680_SET_RAMYCOUNT, bytearray([y, y >> 8]))
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