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Fix grayscale to match Arduino #14

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Merged
merged 1 commit into from
Nov 10, 2020
Merged

Fix grayscale to match Arduino #14

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24 changes: 12 additions & 12 deletions adafruit_il0373.py
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Original file line number Diff line number Diff line change
Expand Up @@ -59,10 +59,18 @@
b"\x50\x01\x37" # CDI setting
b"\x30\x01\x29" # PLL set to 150 Hz
b"\x61\x03\x00\x00\x00" # Resolution
b"\x82\x81\x32\x0a" # VCM DC and delay 50ms
b"\x82\x81\x12\x32" # VCM DC and delay 50ms
)

_GRAYSCALE_LUT = (
_GRAYSCALE_START_SEQUENCE = (
b"\x01\x05\x03\x00\x2b\x2b\x13" # power setting
b"\x06\x03\x17\x17\x17" # booster soft start
b"\x04\x80\xc8" # power on and wait 200 ms
b"\x00\x01\x2f" # panel setting. Further filled in below.
b"\x50\x01\x97" # CDI setting
b"\x30\x01\x3C" # PLL set to 50 Hz (M = 7, N = 4)
b"\x61\x03\x00\x00\x00" # Resolution
b"\x82\x81\x12\x32" # VCM DC and delay 50ms
# Common voltage
b"\x20\x2a"
b"\x00\x0A\x00\x00\x00\x01"
Expand Down Expand Up @@ -112,7 +120,7 @@

_STOP_SEQUENCE = (
b"\x50\x01\x17" # CDI setting
b"\x82\x01\x00" # VCM DC and delay 50ms
b"\x82\x01\x00" # VCM DC to -0.10 V
b"\x02\x00" # Power off
)
# pylint: disable=too-few-public-methods
Expand All @@ -139,9 +147,7 @@ class IL0373(displayio.EPaperDisplay):

def __init__(self, bus, swap_rams=False, **kwargs):
if kwargs.get("grayscale", False):
start_sequence = bytearray(len(_START_SEQUENCE) + len(_GRAYSCALE_LUT))
start_sequence[: len(_START_SEQUENCE)] = _START_SEQUENCE
start_sequence[len(_START_SEQUENCE) :] = _GRAYSCALE_LUT
start_sequence = bytearray(_GRAYSCALE_START_SEQUENCE)
else:
start_sequence = bytearray(_START_SEQUENCE)

Expand All @@ -164,12 +170,6 @@ def __init__(self, bus, swap_rams=False, **kwargs):
black_bits_inverted = kwargs.pop("black_bits_inverted", False)
if "highlight_color" not in kwargs:
start_sequence[17] |= 1 << 4 # Set BWR to only do black and white.
if kwargs.get("grayscale", False):
start_sequence[17] |= (
1 << 5
) # Set REG_EN to use the LUT sequence from the registers.
start_sequence[6] = 0x13 # Boost the voltage
start_sequence[23] = 0x3C # PLL set to 50 Hz (M = 7, N = 4)

# Set the resolution to scan
if width > 128:
Expand Down