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Updated to init and shutdown upon update
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@Gadgetoid
Gadgetoid committed Jul 13, 2017
1 parent 7b8302c commit 5b464a4
Showing 1 changed file with 42 additions and 25 deletions.
67 changes: 42 additions & 25 deletions library/inkyphat/inky212x104.py
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Expand Up @@ -4,6 +4,7 @@

import sys
import time
import atexit

try:
import spidev
Expand Down Expand Up @@ -69,13 +70,35 @@ def __init__(self, resolution=(104, 212), cs_pin=0, dc_pin=22, reset_pin=27, bus
self.h_flip = h_flip
self.v_flip = v_flip

self.update_x1 = 0
self.update_x2 = self.width
self.update_y1 = 0
self.update_y2 = self.height

self.partial_mode = False
self.partial_config = []
self.border = 0b00000000

GPIO.setup(self.dc_pin, GPIO.OUT, initial=GPIO.LOW)
GPIO.setup(self.reset_pin, GPIO.OUT, initial=GPIO.HIGH)
GPIO.setup(self.busy_pin, GPIO.IN)

self._spi = spidev.SpiDev()
self._spi.open(0, self.cs_pin)

atexit.register(self._display_exit)

def _display_exit(self):
print("Shutting down display, please wait...")
self._display_fini()

def _display_fini(self):
self._busy_wait()
self._send_command(_VCOM_DATA_INTERVAL_SETTING, [0x00])
self._send_command(_POWER_SETTING, [0x02, 0x00, 0x00, 0x00])
self._send_command(_POWER_OFF)

def _display_init(self):
self.reset()

self._busy_wait() # wait for driver to be ready to talk
Expand All @@ -87,30 +110,27 @@ def __init__(self, resolution=(104, 212), cs_pin=0, dc_pin=22, reset_pin=27, bus
self._busy_wait() # wait for driver to be ready to talk

self._send_command(_PANEL_SETTING, [0b11001111])
self._send_command(_VCOM_DATA_INTERVAL_SETTING, [0b00000111])
self._send_command(_VCOM_DATA_INTERVAL_SETTING, [0b00000111 | self.border]) # Set border to white by default

self._send_command(_OSCILLATOR_CONTROL, [0x29])
self._send_command(_RESOLUTION_SETTING, [0x68, 0x00, 0xD4])
self._send_command(_VCOM_DC_SETTING, [0x0A])
self._send_command(0x20, [0x06, 0x06, 0x06, 0x0A, 0x0A, 0x14, 0x06, 0x06, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00])
self._send_command(0x21, [0x06, 0x46, 0x06, 0x8a, 0x4a, 0x14, 0x86, 0x06, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00])
self._send_command(0x22, [0x86, 0x06, 0x06, 0x8a, 0x4a, 0x14, 0x06, 0x46, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00])
self._send_command(0x23, [0x86, 0x06, 0x06, 0x8a, 0x4a, 0x14, 0x06, 0x46, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00])
self._send_command(0x24, [0x86, 0x06, 0x06, 0x8a, 0x4a, 0x14, 0x06, 0x46, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00])
self._send_command(0x25, [0x18, 0x18, 0x02, 0x1e, 0x1e, 0x02, 0x04, 0x28, 0x05, 0x05, 0x1e, 0x02, 0x04, 0x02, 0x01])
self._send_command(0x26, [0x98, 0x98, 0x02, 0x5e, 0x5e, 0x02, 0x84, 0x68, 0x05, 0x45, 0x5e, 0x02, 0x44, 0x42, 0x01])
self._send_command(0x27, [0x18, 0x18, 0x02, 0x1e, 0x1e, 0x02, 0x04, 0x28, 0x05, 0x05, 0x1e, 0x02, 0x04, 0x02, 0x01])

self.clear_partial_mode()
if self.partial_mode:
self._send_command(_PARTIAL_CONFIG, self.partial_config)
self._send_command(_PARTIAL_ENTER)
else:
self._send_command(_PARTIAL_EXIT)

def clear_partial_mode(self):
self.partial_mode = False
self.update_x1 = 0
self.update_x2 = self.width
self.update_y1 = 0
self.update_y2 = self.height
self._send_command(_PARTIAL_EXIT)

def set_partial_mode(self, vr_st, vr_ed, hr_st, hr_ed):
self.partial_mode = True
self.update_x1 = (hr_st // 8) * 8 # Snap update region to byte boundary
self.update_x2 = (hr_ed // 8) * 8
self.update_y1 = vr_st
Expand All @@ -137,7 +157,7 @@ def set_partial_mode(self, vr_st, vr_ed, hr_st, hr_ed):
# vr_st - vr_ed = 0 - 212 - Actually horizontal on Inky pHAT
# hr_st - hr_ed = 0 - 12 - Actually vertical on Inky pHAT in 13 slices of 8 vertical pixels

self._send_command(_PARTIAL_CONFIG, [
self.partial_config = [
# D7 D6 D5 D4 D3 D2 D1 D0
0b00000000 | (hr_st & 0b11111) << 3, # HRST[7:3] 0 0 0
0b00000111 | (hr_ed & 0b11111) << 3, # HRED[7:3] 1 1 1
Expand All @@ -146,9 +166,7 @@ def set_partial_mode(self, vr_st, vr_ed, hr_st, hr_ed):
0b00000000 | (vr_ed & 0b100000000) >> 8, # - - - - - - - VRED[8]
0b00000000 | (vr_ed & 0b11111111), # VRED[7:0]
0b00000001, # - - - - - - - PT_SCAN
])

self._send_command(_PARTIAL_ENTER)
]

# HRST: Horizontal start channel bank: 00h to 13h (0 to 19)
# HRED: Horizontal end channel bank: 00h to 13h (0 to 19), HRED must be greater than HRST
Expand All @@ -157,23 +175,23 @@ def set_partial_mode(self, vr_st, vr_ed, hr_st, hr_ed):
# PT_SCAN: 0 = Only in partial window, 1 = inside and outside of partial window

def set_border(self, border):
cmd = 0b00000111

if border in self.palette:
c = self.palette[border]
if c == BLACK:
cmd |= 0b11000000
self.border = 0b11000000
if c == RED:
cmd |= 0b01000000
self.border = 0b01000000
if c == WHITE:
cmd |= 0b10000000

self._send_command(_VCOM_DATA_INTERVAL_SETTING, [cmd])
self.border = 0b10000000
else:
self.border = 0b00000000

def set_palette(self, palette):
self.palette = palette

def update(self):
self._display_init()

x1, x2 = self.update_x1, self.update_x2
y1, y2 = self.update_y1, self.update_y2

Expand All @@ -185,11 +203,9 @@ def update(self):
if self.h_flip:
region = numpy.flipud(region)


buf_red = numpy.packbits(numpy.where(region == RED, 1, 0)).tolist()
buf_black = numpy.packbits(numpy.where(region == BLACK, 1, 0)).tolist()


# start black data transmission
self._send_command(_DATA_START_TRANSMISSION_1)
self._send_data(buf_black)
Expand All @@ -199,7 +215,8 @@ def update(self):
self._send_data(buf_red)

self._send_command(_DISPLAY_REFRESH)
self._busy_wait()

self._display_fini()

def set_pixel(self, x, y, v):
if v in self.palette:
Expand Down

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