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# Driver for official MicroPython LCD160CR display
# MIT license; Copyright (c) 2017 Damien P. George
from micropython import const
from utime import sleep_ms
from ustruct import calcsize, pack_into
import uerrno, machine
# for set_orient
PORTRAIT = const(0)
LANDSCAPE = const(1)
PORTRAIT_UPSIDEDOWN = const(2)
LANDSCAPE_UPSIDEDOWN = const(3)
# for set_startup_deco; can be or'd
STARTUP_DECO_NONE = const(0)
STARTUP_DECO_MLOGO = const(1)
STARTUP_DECO_INFO = const(2)
_uart_baud_table = {
2400: 0,
4800: 1,
9600: 2,
19200: 3,
38400: 4,
57600: 5,
115200: 6,
230400: 7,
460800: 8,
}
class LCD160CR:
def __init__(self, connect=None, *, pwr=None, i2c=None, spi=None, i2c_addr=98):
if connect in ('X', 'Y', 'XY', 'YX'):
i = connect[-1]
j = connect[0]
y = j + '4'
elif connect == 'C':
i = 2
j = 2
y = 'A7'
else:
if pwr is None or i2c is None or spi is None:
raise ValueError('must specify valid "connect" or all of "pwr", "i2c" and "spi"')
if pwr is None:
pwr = machine.Pin(y, machine.Pin.OUT)
if i2c is None:
i2c = machine.I2C(i, freq=1000000)
if spi is None:
spi = machine.SPI(j, baudrate=13500000, polarity=0, phase=0)
if not pwr.value():
pwr(1)
sleep_ms(10)
# else:
# alread have power
# lets be optimistic...
# set connections
self.pwr = pwr
self.i2c = i2c
self.spi = spi
self.i2c_addr = i2c_addr
# create temp buffers and memoryviews
self.buf16 = bytearray(16)
self.buf19 = bytearray(19)
self.buf = [None] * 10
for i in range(1, 10):
self.buf[i] = memoryview(self.buf16)[0:i]
self.buf1 = self.buf[1]
self.array4 = [0, 0, 0, 0]
# set default orientation and window
self.set_orient(PORTRAIT)
self._fcmd2b('<BBBBBB', 0x76, 0, 0, self.w, self.h) # viewport 'v'
self._fcmd2b('<BBBBBB', 0x79, 0, 0, self.w, self.h) # window 'y'
def _send(self, cmd):
i = self.i2c.writeto(self.i2c_addr, cmd)
if i == len(cmd):
return
cmd = memoryview(cmd)
n = len(cmd)
while True:
i += self.i2c.writeto(self.i2c_addr, cmd[i:])
if i == n:
return
sleep_ms(10)
def _fcmd2(self, fmt, a0, a1=0, a2=0):
buf = self.buf[calcsize(fmt)]
pack_into(fmt, buf, 0, 2, a0, a1, a2)
self._send(buf)
def _fcmd2b(self, fmt, a0, a1, a2, a3, a4=0):
buf = self.buf[calcsize(fmt)]
pack_into(fmt, buf, 0, 2, a0, a1, a2, a3, a4)
self._send(buf)
def _waitfor(self, n, buf):
t = 5000
while t:
self.i2c.readfrom_into(self.i2c_addr, self.buf1)
if self.buf1[0] >= n:
self.i2c.readfrom_into(self.i2c_addr, buf)
return
t -= 1
sleep_ms(1)
raise OSError(uerrno.ETIMEDOUT)
def oflush(self, n=255):
t = 5000
while t:
self.i2c.readfrom_into(self.i2c_addr + 1, self.buf1)
r = self.buf1[0]
if r >= n:
return
t -= 1
machine.idle()
raise OSError(uerrno.ETIMEDOUT)
def iflush(self):
t = 5000
while t:
self.i2c.readfrom_into(self.i2c_addr, self.buf16)
if self.buf16[0] == 0:
return
t -= 1
sleep_ms(1)
raise OSError(uerrno.ETIMEDOUT)
#### MISC METHODS ####
@staticmethod
def rgb(r, g, b):
return ((b & 0xf8) << 8) | ((g & 0xfc) << 3) | (r >> 3)
@staticmethod
def clip_line(c, w, h):
while True:
ca = ce = 0
if c[1] < 0:
ca |= 8
elif c[1] > h:
ca |= 4
if c[0] < 0:
ca |= 1
elif c[0] > w:
ca |= 2
if c[3] < 0:
ce |= 8
elif c[3] > h:
ce |= 4
if c[2] < 0:
ce |= 1
elif c[2] > w:
ce |= 2
if ca & ce:
return False
elif ca | ce:
ca |= ce
if ca & 1:
if c[2] < c[0]:
c[0], c[2] = c[2], c[0]
c[1], c[3] = c[3], c[1]
c[1] += ((-c[0]) * (c[3] - c[1])) // (c[2] - c[0])
c[0] = 0
elif ca & 2:
if c[2] < c[0]:
c[0], c[2] = c[2], c[0]
c[1], c[3] = c[3], c[1]
c[3] += ((w - 1 - c[2]) * (c[3] - c[1])) // (c[2] - c[0])
c[2] = w - 1
elif ca & 4:
if c[0] == c[2]:
if c[1] >= h:
c[1] = h - 1
if c[3] >= h:
c[3] = h - 1
else:
if c[3] < c[1]:
c[0], c[2] = c[2], c[0]
c[1], c[3] = c[3], c[1]
c[2] += ((h - 1 - c[3]) * (c[2] - c[0])) // (c[3] - c[1])
c[3] = h - 1
else:
if c[0] == c[2]:
if c[1] < 0:
c[1] = 0
if c[3] < 0:
c[3] = 0
else:
if c[3] < c[1]:
c[0], c[2] = c[2], c[0]
c[1], c[3] = c[3], c[1]
c[0] += ((-c[1]) * (c[2] - c[0])) // (c[3] - c[1])
c[1] = 0
else:
return True
#### SETUP COMMANDS ####
def set_power(self, on):
self.pwr(on)
sleep_ms(15)
def set_orient(self, orient):
self._fcmd2('<BBB', 0x14, (orient & 3) + 4)
# update width and height variables
self.iflush()
self._send(b'\x02g0')
self._waitfor(4, self.buf[5])
self.w = self.buf[5][1]
self.h = self.buf[5][2]
def set_brightness(self, value):
self._fcmd2('<BBB', 0x16, value)
def set_i2c_addr(self, addr):
# 0x0e set i2c addr
if addr & 3:
raise ValueError('must specify mod 4 aligned address')
self._fcmd2('<BBW', 0x0e, 0x433249 | (addr << 24))
def set_uart_baudrate(self, baudrate):
try:
baudrate = _uart_baud_table[baudrate]
except KeyError:
raise ValueError('invalid baudrate')
self._fcmd2('<BBB', 0x18, baudrate)
def set_startup_deco(self, value):
self._fcmd2('<BBB', 0x19, value)
def save_to_flash(self):
self._send(b'\x02fn')
#### PIXEL ACCESS ####
def set_pixel(self, x, y, c):
self._fcmd2b('<BBBBH', 0x41, x, y, c)
def get_pixel(self, x, y):
self._fcmd2('<BBBB', 0x61, x, y)
t = 1000
while t:
self.i2c.readfrom_into(self.i2c_addr, self.buf1)
if self.buf1[0] >= 2:
self.i2c.readfrom_into(self.i2c_addr, self.buf[3])
return self.buf[3][1] | self.buf[3][2] << 8
t -= 1
sleep_ms(1)
raise OSError(uerrno.ETIMEDOUT)
def get_line(self, x, y, buf):
l = len(buf) // 2
self._fcmd2b('<BBBBB', 0x10, l, x, y)
l *= 2
t = 1000
while t:
self.i2c.readfrom_into(self.i2c_addr, self.buf1)
if self.buf1[0] >= l:
self.i2c.readfrom_into(self.i2c_addr, buf)
return
t -= 1
sleep_ms(1)
raise OSError(uerrno.ETIMEDOUT)
def screen_dump(self, buf, x=0, y=0, w=None, h=None):
if w is None:
w = self.w - x
if h is None:
h = self.h - y
if w <= 127:
line = bytearray(2 * w + 1)
line2 = None
else:
# split line if more than 254 bytes needed
buflen = (w + 1) // 2
line = bytearray(2 * buflen + 1)
line2 = memoryview(line)[:2 * (w - buflen) + 1]
for i in range(min(len(buf) // (2 * w), h)):
ix = i * w * 2
self.get_line(x, y + i, line)
buf[ix:ix + len(line) - 1] = memoryview(line)[1:]
ix += len(line) - 1
if line2:
self.get_line(x + buflen, y + i, line2)
buf[ix:ix + len(line2) - 1] = memoryview(line2)[1:]
ix += len(line2) - 1
def screen_load(self, buf):
l = self.w * self.h * 2+2
self._fcmd2b('<BBHBBB', 0x70, l, 16, self.w, self.h)
n = 0
ar = memoryview(buf)
while n < len(buf):
if len(buf) - n >= 0x200:
self._send(ar[n:n + 0x200])
n += 0x200
else:
self._send(ar[n:])
while n < self.w * self.h * 2:
self._send(b'\x00')
n += 1
#### TEXT COMMANDS ####
def set_pos(self, x, y):
self._fcmd2('<BBBB', 0x58, x, y)
def set_text_color(self, fg, bg):
self._fcmd2('<BBHH', 0x63, fg, bg)
def set_font(self, font, scale=0, bold=0, trans=0, scroll=0):
self._fcmd2('<BBBB', 0x46, (scroll << 7) | (trans << 6) | ((font & 3) << 4) | (bold & 0xf), scale & 0xff)
def write(self, s):
# TODO: eventually check for room in LCD input queue
self._send(s)
#### PRIMITIVE DRAWING COMMANDS ####
def set_pen(self, line, fill):
self._fcmd2('<BBHH', 0x50, line, fill)
def erase(self):
self._send(b'\x02\x45')
def dot(self, x, y):
if 0 <= x < self.w and 0 <= y < self.h:
self._fcmd2('<BBBB', 0x4b, x, y)
def rect(self, x, y, w, h, cmd=0x72):
if x + w <= 0 or y + h <= 0 or x >= self.w or y >= self.h:
return
elif x < 0 or y < 0:
left = top = True
if x < 0:
left = False
w += x
x = 0
if y < 0:
top = False
h += y
y = 0
if cmd == 0x51 or cmd == 0x72:
# draw interior
self._fcmd2b('<BBBBBB', 0x51, x, y, min(w, 255), min(h, 255))
if cmd == 0x57 or cmd == 0x72:
# draw outline
if left:
self._fcmd2b('<BBBBBB', 0x57, x, y, 1, min(h, 255))
if top:
self._fcmd2b('<BBBBBB', 0x57, x, y, min(w, 255), 1)
if x + w < self.w:
self._fcmd2b('<BBBBBB', 0x57, x + w, y, 1, min(h, 255))
if y + h < self.h:
self._fcmd2b('<BBBBBB', 0x57, x, y + h, min(w, 255), 1)
else:
self._fcmd2b('<BBBBBB', cmd, x, y, min(w, 255), min(h, 255))
def rect_outline(self, x, y, w, h):
self.rect(x, y, w, h, 0x57)
def rect_interior(self, x, y, w, h):
self.rect(x, y, w, h, 0x51)
def line(self, x1, y1, x2, y2):
ar4 = self.array4
ar4[0] = x1
ar4[1] = y1
ar4[2] = x2
ar4[3] = y2
if self.clip_line(ar4, self.w, self.h):
self._fcmd2b('<BBBBBB', 0x4c, ar4[0], ar4[1], ar4[2], ar4[3])
def dot_no_clip(self, x, y):
self._fcmd2('<BBBB', 0x4b, x, y)
def rect_no_clip(self, x, y, w, h):
self._fcmd2b('<BBBBBB', 0x72, x, y, w, h)
def rect_outline_no_clip(self, x, y, w, h):
self._fcmd2b('<BBBBBB', 0x57, x, y, w, h)
def rect_interior_no_clip(self, x, y, w, h):
self._fcmd2b('<BBBBBB', 0x51, x, y, w, h)
def line_no_clip(self, x1, y1, x2, y2):
self._fcmd2b('<BBBBBB', 0x4c, x1, y1, x2, y2)
def poly_dot(self, data):
if len(data) & 1:
raise ValueError('must specify even number of bytes')
self._fcmd2('<BBB', 0x71, len(data) // 2)
self._send(data)
def poly_line(self, data):
if len(data) & 1:
raise ValueError('must specify even number of bytes')
self._fcmd2('<BBB', 0x78, len(data) // 2)
self._send(data)
#### TOUCH COMMANDS ####
def touch_config(self, calib=False, save=False, irq=None):
self._fcmd2('<BBBB', 0x7a, (irq is not None) << 2 | save << 1 | calib, bool(irq) << 7)
def is_touched(self):
self._send(b'\x02T')
b = self.buf[4]
self._waitfor(3, b)
return b[1] >> 7 != 0
def get_touch(self):
self._send(b'\x02T') # implicit LCD output flush
b = self.buf[4]
self._waitfor(3, b)
return b[1] >> 7, b[2], b[3]
#### ADVANCED COMMANDS ####
def set_spi_win(self, x, y, w, h):
pack_into('<BBBHHHHHHHH', self.buf19, 0, 2, 0x55, 10, x, y, x + w - 1, y + h - 1, 0, 0, 0, 0xffff)
self._send(self.buf19)
def fast_spi(self, flush=True):
self._send(b'\x02\x12')
if flush:
self.oflush()
return self.spi
def show_framebuf(self, buf):
self.fast_spi().write(buf)
def set_scroll(self, on):
self._fcmd2('<BBB', 0x15, on)
def set_scroll_win(self, win, x=-1, y=0, w=0, h=0, vec=0, pat=0, fill=0x07e0, color=0):
pack_into('<BBBHHHHHHHH', self.buf19, 0, 2, 0x55, win, x, y, w, h, vec, pat, fill, color)
self._send(self.buf19)
def set_scroll_win_param(self, win, param, value):
self._fcmd2b('<BBBBH', 0x75, win, param, value)
def set_scroll_buf(self, s):
l = len(s)
if l > 32:
raise ValueError('length must be 32 or less')
self._fcmd2('<BBB', 0x11, l)
self._send(s)
def jpeg_start(self, l):
if l > 0xffff:
raise ValueError('length must be 65535 or less')
self.oflush()
self._fcmd2('<BBH', 0x6a, l)
def jpeg_data(self, buf):
self._send(buf)
def jpeg(self, buf):
self.jpeg_start(len(buf))
self.jpeg_data(buf)
def feed_wdt(self):
self._send(b'\x02\x17')
def reset(self):
self._send(b'\x02Y\xef\xbe\xad\xde')
sleep_ms(15)