drivers/display: Add driver and test for uPy LCD160CR display.

1 files changed, 464 insertions, 0 deletions

diff --git a/drivers/display/lcd160cr.py b/drivers/display/lcd160cr.py
new file mode 100644
index 0000000000..0861f8233c
--- /dev/null
+++ b/drivers/display/lcd160cr.py
@@ -0,0 +1,464 @@
+# 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(value)
+        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._fcmd2('<BBB', 0x66, 'n')
+
+    #### PIXEL ACCESS ####
+
+    def set_pixel(self, x, y, c):
+        self._fcmd2b('<BBBBH', 0x41, x, y, c)
+
+    def get_pixel(self, x, y):
+        self._fcmd2b('<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)
+        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):
+        line = bytearray(self.w + 1)
+        h = len(buf) // (2 * self.w)
+        if h > self.h:
+            h = self.h
+        for i in range(h):
+            ix = i * self.w * 2
+            self.get_line(0, i, line)
+            for j in range(1, len(line)):
+                buf[ix] = line[j]
+                ix += 1
+            self.get_line(self.w // 2, i, line)
+            for j in range(1, len(line)):
+                buf[ix] = line[j]
+                ix += 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):
+        if flush:
+            self.oflush()
+        self._send(b'\x02\x12')
+        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):
+        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)